CN115141590A - Bridge expansion joint filling material and construction method adopting same - Google Patents
Bridge expansion joint filling material and construction method adopting same Download PDFInfo
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- CN115141590A CN115141590A CN202210998583.6A CN202210998583A CN115141590A CN 115141590 A CN115141590 A CN 115141590A CN 202210998583 A CN202210998583 A CN 202210998583A CN 115141590 A CN115141590 A CN 115141590A
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- 239000000835 fiber Substances 0.000 claims description 63
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 51
- 238000002156 mixing Methods 0.000 claims description 48
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 39
- 238000010521 absorption reaction Methods 0.000 claims description 28
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 26
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- 229920000647 polyepoxide Polymers 0.000 claims description 26
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 14
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- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 12
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 12
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 12
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/02—Polyureas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Building Environments (AREA)
Abstract
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent. The bridge expansion joint filling material can realize high compactness filling of the bridge expansion joint, effectively improves the cohesiveness with a concrete interface under the high-temperature condition, improves and relieves the influence of bridge end displacement caused by driving load and temperature, and can well bear the tensile stress caused by shrinkage deformation under the low-temperature condition. A construction method adopting bridge expansion joint filling materials comprises 5 construction steps. The construction method adopting the bridge expansion joint filling material can realize high compactness filling of the bridge expansion joint, effectively improve the cohesiveness with a concrete interface under the high-temperature condition, improve and relieve the influence of driving load and temperature-caused bridge end displacement, and well bear the tensile stress caused by shrinkage deformation under the low-temperature condition.
Description
Technical Field
The invention relates to the technical field of expansion joint materials, in particular to a bridge expansion joint filling material and a construction method adopting the same.
Background
Concentrated force and impact stress are easily generated at the expansion joint of the common bridge. And the common concrete has poor shock resistance and low toughness, so that the concrete at the expansion joint is easy to crack or even damage under the condition of large traffic flow, and the connecting capacity between bridge decks is reduced, thereby seriously influencing the service life and safety of the bridge. Statistically, the maintenance costs associated with some areas of the bridge expansion joint may exceed even 20% of the total maintenance costs of the bridge. The transition area concrete for connecting the pavement concrete and the expansion device has poor service conditions and is very easy to damage under the influence of repeated vehicle load, the conduction force of the expansion joint and complex environmental factors. Research shows that when the vehicle is overloaded or over-speed driven through the bridge expansion joint, the maximum main stress value of the concrete joint in the partial transition area exceeds the standard tensile strength value of the cement concrete.
In the bridge construction in the prior art, most of the steel fiber concrete is adopted to replace common concrete for filling the expansion joint. The steel fiber concrete is a novel multiphase composite material formed by doping short steel fibers which are distributed disorderly into common concrete. However, the steel fibers are not uniformly distributed, and when the direction of the steel fibers is not consistent with the direction of the tensile stress, the tensile strength is improved to a small extent, and the filling requirement of the bridge expansion joint cannot be well met.
Therefore, it is necessary to provide a bridge expansion joint filling material and a construction method using the same to solve the deficiencies of the prior art.
Disclosure of Invention
One of the purposes of the invention is to provide a bridge expansion joint filling material which avoids the defects of the prior art. The filling material for the bridge expansion joint has excellent bonding and tensile stress performances, and good deformability and weather resistance.
The above object of the present invention is achieved by the following technical measures:
the filling material for bridge expansion joints is prepared with adhesive material, structural material, stress absorbing material, high modulus material, toughening agent, thickener, coagulant and solvent.
The filling material for the bridge expansion joint comprises the following components in parts by mass,
adhesive material: 80-120 parts;
structural material: 5-10 parts;
stress absorbing material: 4-8 parts;
high modulus material: 6-12 parts;
a toughening agent: 6-10 parts;
thickening agent: 1-6 parts;
setting accelerator: 2-6 parts;
solvent: 8 to 12 portions.
Furthermore, the filling material for the bridge expansion joint comprises, by mass,
adhesive material: 90-110 parts;
structural material: 6-8 parts;
stress absorbing material: 5-8 parts of a solvent;
high modulus material: 8-10 parts;
a toughening agent: 7-9 parts;
thickening agent: 2-5 parts;
setting accelerator: 3-5 parts;
solvent: 9 to 11 portions.
Furthermore, the filling material for the bridge expansion joint comprises, by mass,
adhesive material: 100 parts of (A);
structural material: 7 parts;
stress absorbing material: 6 parts;
high modulus material: 9 parts of (1);
toughening agent: 8 parts of a mixture;
thickening agent: 3 parts of a mixture;
setting accelerator: 4 parts;
solvent: 10 parts.
Preferably, the adhesive material is at least one of epoxy resin or acrylate glue.
Preferably, the structural material is at least one of boron fiber and high-strength glass fiber.
Preferably, the stress absorbing material is at least one of urethane rubber or thermoplastic vulcanizate.
The high modulus material is at least one of aromatic polyamide fiber or polyethylene fiber.
Preferably, the toughening agent is at least one of acrylonitrile-butadiene-styrene copolymer or chlorinated polyethylene.
Preferably, the thickener is at least one of propylene glycol sodium alginate and hydroxypropyl starch.
Preferably, the accelerator is at least one of polyamide resin or modified aromatic amine curing agent.
Preferably, the solvent is at least one of ethyl acetate and methanol.
When the adhesive material is epoxy resin, the epoxy resin is bisphenol A type epoxy or phenolic aldehyde type epoxy resin.
When the adhesive material is acrylate adhesive, the curing time of the acrylate adhesive ranges from 30min to 45min.
Preferably, the structural material has a fiber length of 1mm to 3mm and a fiber diameter of 75 μm to 300 μm.
Preferably, the dynamic energy absorption rate of the stress absorbing material ranges from 10% to 30%, and the elongation at break of the stress absorbing material ranges from 120% to 150%.
Preferably, the length of the high modulus material ranges from 1.5mm to 3mm, and the initial modulus of the high modulus material ranges from 32N/tex to 64N/tex.
Preferably, the fineness of the toughening agent is within the range of 100 meshes to 250 meshes.
The invention relates to a filling material for a bridge expansion joint, which mainly comprises a gluing material, a structural material, a stress absorbing material, a high modulus material, a toughening agent, a thickening agent, a coagulant and a solvent. The bridge expansion joint filling material can realize high compactness filling of the bridge expansion joint, effectively improves the cohesiveness with a concrete interface under the high-temperature condition, improves and relieves the influence of bridge end displacement caused by driving load and temperature, and can well bear the tensile stress caused by shrinkage deformation under the low-temperature condition.
The invention also aims to provide a construction method adopting the filling material for the bridge expansion joint, which avoids the defects of the prior art. The construction method adopting the bridge expansion joint filling material has the advantages of simplicity and convenience, and can meet the requirement of the filling performance of the bridge expansion joint.
The above object of the present invention is achieved by the following technical measures:
the construction method adopting the bridge expansion joint filling material comprises the following construction steps:
step (1), mixing a toughening agent and a high-modulus material to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring to obtain a mixture III, and then sieving the mixture III to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring to obtain a mixture IV;
step (4), adding a thickening agent into the mixture IV and stirring to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, and finally vibrating and mixing.
Preferably, the step (1) is to mix the toughening agent and the high modulus material, wherein the mixing speed is 35rad/min to 55rad/min, and the mixing time is 8min to 15min, so as to obtain a mixture I; and stirring the gelled material, the stress absorption material and the solvent, wherein the stirring speed is 600 rad/min-900 rad/min, and the stirring time is 3 min-8 min to obtain a mixture II.
Preferably, the step (2) is to add the mixture I into the mixture II to be stirred, wherein the stirring speed is 800rad/min to 1200rad/min, the stirring time is 8min to 15min, so as to obtain a mixture III, and then, sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm, so as to obtain a sieved material.
Preferably, the step (3) is to add the structural material into the sieved material and stir, wherein the stirring speed is 800rad/min to 1200rad/min, and the stirring time is 3min to 8min to obtain a mixture IV.
Preferably, the step (4) is to add the thickener into the mixture IV and stir the mixture IV at a stirring speed of 40rad/min to 50rad/min for 2min to 3min to obtain the mixture V.
Preferably, in the step (1), the toughening agent and the high modulus material are mixed by a horizontal ribbon mixer, wherein the mixing speed is 45rad/min, and the mixing time is 10min, so as to obtain a mixture I; and stirring the gelled material, the stress absorption material and the solvent by a handheld pneumatic stirrer, wherein the stirring speed is 800rad/min, and the stirring time is 5min to obtain a mixture II.
Preferably, the step (2) is to add the mixture I into the mixture II and stir, wherein the stirring speed is 1000rad/min, the stirring time is 10min, to obtain a mixture III, and then, to pass the mixture III through a square-hole sieve with the hole diameter of 0.3mm, to obtain a sieved material.
Preferably, the step (3) is to add the structural material into the sieved material and stir, wherein the stirring speed is 1000rad/min, and the stirring time is 5min to obtain a mixture IV.
Preferably, in the step (4), the thickener is added into the mixture IV and stirred at the stirring speed of 45rad/min for 2.5min to obtain the mixture V.
Preferably, in the step (5), a part of the mixture V is coated on the surface of the bridge expansion joint to be constructed by a coating device, then the mixture V is filled into a reserved groove of the bridge expansion joint to be constructed, then a coagulant is put into the mixture V in the reserved groove, a vibrating device is used for vibrating and mixing, then surface finishing treatment is carried out, and construction is finished after solidification.
The invention relates to a construction method adopting a bridge expansion joint filling material, which comprises the following construction steps: step (1), mixing a toughening agent and a high-modulus material to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent to obtain a mixture II; step (2), adding the mixture I into the mixture II, stirring to obtain a mixture III, and then sieving the mixture III to obtain a sieved material; step (3), adding the structural material into the screened material, and stirring to obtain a mixture IV; step (4), adding a thickening agent into the mixture IV and stirring to obtain a mixture V; and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing, and finishing construction after solidification. The construction method adopting the bridge expansion joint filling material can realize high compactness filling of the bridge expansion joint, effectively improve the cohesiveness with a concrete interface under the high-temperature condition, improve and relieve the influence of the driving load and the displacement of the end part of the bridge caused by the temperature, and well bear the tensile stress caused by shrinkage deformation under the low-temperature condition.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples. The experimental procedures in the following examples are conventional unless otherwise specified. The raw materials, reagent materials and the like used in the following examples can be purchased from conventional biochemical reagent stores or pharmaceutical operation companies unless otherwise specified. The epoxy resin is purchased from chemical industry Co., ltd, from Jinan province of Ji, china; the acrylate adhesives are all purchased from Guangdong Hengda New Material science and technology Co., ltd; boron fibers were purchased from highland barley new technology, ltd; high strength glass fibers were purchased from Nanjing Huahao composite, inc.; the thermoplastic vulcanized rubber and the polyurethane rubber are purchased from rubber and plastic technology limited of northeast China; the aromatic polyamide fiber and the polyethylene fiber are purchased from highland barley new material science and technology ltd; acrylonitrile-butadiene-styrene copolymer was obtained from Polyonaxin materials, inc. of Dongguan; chlorinated polyethylene was purchased from Shandong Sanyi group, inc.; propylene glycol sodium alginate was purchased from Mingrui group (Henan) Ltd; hydroxypropyl starch was purchased from south beijing ilaprazole chemical ltd; polyamide resins were purchased from Shandong Changyao New materials Co., ltd; the modified arylamine curing agent is purchased from Shenzhen Shuiji chemical engineering Co., ltd
Example 1.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for the bridge expansion joint of the embodiment comprises the following components in parts by mass,
adhesive material: 80-120 parts;
structural material: 5-10 parts;
stress absorbing material: 4-8 parts;
high modulus material: 6-12 parts;
a toughening agent: 6-10 parts;
thickening agent: 1-6 parts;
setting accelerator: 2-6 parts;
solvent: 8 to 12 portions.
Wherein the adhesive material is at least one of epoxy resin or acrylate adhesive.
The structural material is at least one of boron fiber or high-strength glass fiber.
The stress absorbing material is at least one of a polyurethane rubber or a thermoplastic vulcanizate.
The high modulus material is at least one of aromatic polyamide fiber or polyethylene fiber.
The toughening agent is at least one of acrylonitrile-butadiene-styrene copolymer or chlorinated polyethylene.
The thickener is at least one of propylene glycol sodium alginate or hydroxypropyl starch.
The coagulant is at least one of polyamide resin or modified arylamine curing agent.
The solvent is at least one of ethyl acetate or methanol.
When the adhesive material is epoxy resin, the epoxy resin is bisphenol A type epoxy or phenolic aldehyde type epoxy resin.
When the adhesive material is acrylate adhesive, the curing time of the acrylate adhesive ranges from 30min to 45min.
The fiber length of the structural material is 1 mm-3 mm, and the fiber diameter of the structural material is 75 μm-300 μm.
The dynamic energy absorption rate range of the stress absorption material is 10-30%, and the breaking elongation rate range of the stress absorption material is 120-150%.
The length range of the high modulus material is 1.5 mm-3 mm, and the initial modulus range of the high modulus material is 32N/tex-64N/tex.
The fineness range of the toughening agent is 100-250 meshes.
It should be noted that the initial modulus range of the high modulus material of the present invention is determined by the type of high modulus material, such as aramid fibers of type KEVLAR49, KEVLAR AP or Twaron2000, polyethylene fibers of type UHMW-PE S900 or Dyneema SK65, and the dynamic energy absorption rate and elongation at break of the aramid fibers and polyethylene fibers of the above types are within the above ranges. The skilled person can select the above according to the actual situation.
The vibrational energy absorption rate and elongation at break of the stress absorbing material of the present invention is determined by the type or model of the stress absorbing material, such as a TPV thermoplastic vulcanizate, or a urethane rubber of the type UR101, wherein both the vibrational energy absorption rate and the elongation at break are within the scope of the present invention. The skilled person can select the above according to the actual situation.
The good effect of the filling material for the bridge expansion joint is generated under the synergistic effect of different components, and the action mechanism of each component is mainly as follows:
1. the adhesive material can enhance the interface bonding performance between the filling material and the bridge expansion joint member, and simultaneously provides a carrier for other key component materials to bond different components into a whole;
2. the high-modulus material and the toughening agent can obviously improve the overall elastic modulus and strength, and the structural material is dispersed in the adhesive material and forms a local dendritic structure through mutual connection, so that the high-modulus material and the toughening agent can play a good role in supporting the pressure at the end part of the bridge, and the synergistic effect of the high-modulus material and the toughening agent can realize good compression integrity;
3. the stress absorbing material can realize local absorption and elastic dispersion on tensile force or pressure, and meanwhile, the interactive connection formed between the stress absorbing material and the structural material and the high-modulus material can realize effective dispersion of stress and reasonable transfer of a bearing carrier, so that the effective control of temperature stress, load stress and the like on the effect of the bridge expansion joint is realized;
4. the thickening agent and the coagulant can promote the rapid solidification and strength formation of the filling material;
5. the solvent is used for improving the workability of construction.
This bridge expansion joint filling material can realize filling to the high closely knit degree of bridge expansion joint, effectively improves the cohesiveness with the concrete interface under the high temperature situation, improves and alleviates the influence of bridge tip displacement that driving load and temperature arouse, and can also be good bear the tensile stress that shrinkage deformation arouses under the low temperature situation.
Example 2.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 80-120 parts;
the structural material is as follows: 5-10 parts;
stress absorbing material: 4-8 parts;
high modulus material: 6-12 parts;
a toughening agent: 6-10 parts;
thickening agent: 1-6 parts;
setting accelerator: 2-6 parts;
solvent: 8 to 12 portions.
Wherein, the adhesive material is at least one of epoxy resin or acrylate glue.
The structural material is at least one of boron fiber or high-strength glass fiber.
The stress absorbing material is at least one of a polyurethane rubber or a thermoplastic vulcanizate.
The high modulus material is at least one of aromatic polyamide fiber or polyethylene fiber.
The toughening agent is at least one of acrylonitrile-butadiene-styrene copolymer or chlorinated polyethylene.
The thickener is at least one of propylene glycol sodium alginate or hydroxypropyl starch.
The coagulant is at least one of polyamide resin or modified arylamine curing agent.
The solvent is at least one of ethyl acetate or methanol.
When the adhesive material is epoxy resin, the epoxy resin is bisphenol A type epoxy or phenolic aldehyde type epoxy resin.
When the adhesive material is acrylate adhesive, the curing time of the acrylate adhesive ranges from 30min to 45min.
The fiber length of the structural material is 1 mm-3 mm, and the fiber diameter of the structural material is 75 μm-300 μm.
The dynamic energy absorption rate range of the stress absorption material is 10-30%, and the breaking elongation rate range of the stress absorption material is 120-150%.
The length range of the high modulus material is 1.5 mm-3 mm, and the initial modulus range of the high modulus material is 32N/tex-64N/tex.
The fineness range of the toughening agent is 100-250 meshes.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 3.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 80 parts of a mixture;
structural material: 5 parts of a mixture;
stress absorbing material: 5 parts of a mixture;
high modulus material: 8 parts;
a toughening agent: 7 parts;
thickening agent: 2 parts of (1);
setting accelerator: 3 parts of a mixture;
solvent: 8 parts.
Wherein the adhesive material is epoxy resin, specifically bisphenol A epoxy; the structural material is boron fiber; the stress absorbing material is polyurethane rubber; the high modulus material is aromatic polyamide fiber; the toughening agent is acrylonitrile-butadiene-styrene copolymer with the fineness range of 120 meshes-200 meshes; the thickening agent is propylene glycol sodium alginate; the coagulant is polyamide resin; the solvent is methanol.
The bridge expansion joint filling material of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of embodiment 1.
Example 4.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for the bridge expansion joint of the embodiment comprises the following components in parts by mass,
adhesive material: 120 parts of (A);
structural material: 10 parts of (A);
stress absorbing material: 8 parts of a mixture;
high modulus material: 12 parts of (a);
a toughening agent: 10 parts of (A);
thickening agent: 5 parts of a mixture;
setting accelerator: 6 parts of (1);
solvent: 10 parts.
Wherein, the adhesive material is epoxy resin and acrylate glue, and the weight ratio of the epoxy resin to the acrylate glue is 1:1, the epoxy resin is phenolic epoxy resin. The structural material is high-strength glass fiber. The stress absorbing material is polyurethane rubber and thermoplastic vulcanized rubber, and the weight ratio of the polyurethane rubber to the thermoplastic vulcanized rubber is 1:1. the high modulus material is polyethylene fiber. The toughening agent is chlorinated polyethylene with the fineness ranging from 100 meshes to 250 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent is a mixed solution of ethyl acetate and methanol, and the weight ratio of the ethyl acetate to the methanol is 1:2.
the filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 5.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 110 parts of (A);
structural material: 9 parts of (1);
stress absorbing material: 7 parts;
high modulus material: 10 parts of (A);
a toughening agent: 10 parts of (A);
thickening agent: 9 parts of (1);
setting accelerator: 4 parts of a mixture;
solvent: 9 parts.
Wherein the adhesive material is acrylate adhesive. The structural material is boron fiber, the length of the fiber is 1 mm-3 mm, and the diameter range of the fiber is 230 mu m-300 mu m. The stress absorbing material is polyurethane rubber. The high modulus material is an aromatic polyamide fiber. The toughening agent is acrylonitrile-butadiene-styrene copolymer with the fineness of 180 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent was ethyl acetate.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 6.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 90 parts of;
the structural material is as follows: 6 parts of (1);
stress absorbing material: 7 parts;
high modulus material: 8 parts of a mixture;
a toughening agent: 9 parts of (1);
thickening agent: 9 parts of (1);
setting accelerator: 4 parts of a mixture;
solvent: 9 parts.
Wherein the adhesive material is phenolic epoxy resin. The structural material is boron fiber, the fiber length is 1 mm-3 mm, and the fiber diameter range is 230 μm-300 μm. The stress absorbing material is polyurethane rubber. The high modulus material is an aromatic polyamide fiber. The toughening agent is chlorinated polyethylene with the fineness range of 100 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent was ethyl acetate.
The bridge expansion joint filling material of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of embodiment 1.
Example 7.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for the bridge expansion joint of the embodiment comprises the following components in parts by mass,
adhesive material: 100 parts of a binder;
the structural material is as follows: 5 parts of a mixture;
stress absorbing material: 4 parts of a mixture;
high modulus material: 6 parts of (1);
a toughening agent: 6 parts of (1);
thickening agent: 1 part;
setting accelerator: 2 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is phenolic epoxy resin. The structural material is boron fiber, the fiber length is 1 mm-3 mm, and the fiber diameter range of the structural material is 200 μm-250 μm. The stress absorbing material is polyurethane rubber. The high modulus material is an aramid fiber. The toughening agent is acrylonitrile-butadiene-styrene copolymer with the fineness range of 150 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent was ethyl acetate.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 8.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of (A);
structural material: 6 parts of (1);
stress absorbing material: 5 parts of a mixture;
high modulus material: 8 parts of a mixture;
a toughening agent: 7 parts;
thickening agent: 2 parts of (1);
setting accelerator: 3 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is bisphenol A epoxy. The structural material is boron fiber, the fiber length is 2 mm-3 mm, and the fiber diameter range is 100 μm-300 μm. The stress absorbing material is polyurethane rubber. The high modulus material is an aromatic polyamide fiber. The toughening agent is acrylonitrile-butadiene-styrene copolymer with the fineness range of 140 meshes to 200 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent was ethyl acetate.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 9.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of (A);
structural material: 7 parts;
stress absorbing material: 6 parts of (1);
high modulus material: 9 parts of (1);
a toughening agent: 8 parts;
thickening agent: 3 parts of a mixture;
setting accelerator: 4 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is bisphenol A epoxy. The structural material is boron fiber. The stress absorbing material is polyurethane rubber. The high modulus material is an aromatic polyamide fiber. The toughening agent is acrylonitrile-butadiene-styrene copolymer with the fineness range of 200 meshes to 250 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent was ethyl acetate.
The bridge expansion joint filling material of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of embodiment 1.
Example 10.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for the bridge expansion joint of the embodiment comprises the following components in parts by mass,
adhesive material: 100 parts of (A);
structural material: 8 parts;
stress absorbing material: 7 parts;
high modulus material: 10 parts of (A);
toughening agent: 9 parts of (1);
thickening agent: 4 parts of a mixture;
setting accelerator: 5 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is phenolic epoxy resin. The structural material is boron fiber. The stress absorbing material is polyurethane rubber. The high modulus material is an aramid fiber. The toughening agent is acrylonitrile-butadiene-styrene copolymer with the fineness range of 200 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent was ethyl acetate.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 11.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of (A);
structural material: 10 parts of a binder;
stress absorbing material: 8 parts;
high modulus material: 12 parts of (a);
a toughening agent: 10 parts of a binder;
thickening agent: 5 parts of a mixture;
setting accelerator: 6 parts;
solvent: 10 parts.
Wherein the adhesive material is epoxy resin. The structural material is boron fiber. The stress absorbing material is polyurethane rubber. The high modulus material is an aromatic polyamide fiber. The toughening agent is acrylonitrile-butadiene-styrene copolymer with the fineness range of 150 meshes. The thickening agent is propylene glycol sodium alginate. The coagulant is polyamide resin. The solvent was ethyl acetate.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 12.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for the bridge expansion joint of the embodiment comprises the following components in parts by mass,
adhesive material: 100 parts of (A);
structural material: 5 parts of a mixture;
stress absorbing material: 4 parts;
high modulus material: 6 parts;
a toughening agent: 6 parts;
thickening agent: 1 part;
setting accelerator: 2 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is acrylate adhesive. The structural material is high-strength glass fiber. The stress absorbing material is a thermoplastic vulcanizate. The high modulus material is polyethylene fiber. The toughening agent is chlorinated polyethylene with the fineness of 100-250 meshes. The thickening agent is hydroxypropyl starch. The coagulant is modified arylamine curing agent. The solvent is methanol.
The bridge expansion joint filling material of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of embodiment 1.
Example 13.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of (A);
structural material: 6 parts of (1);
stress absorbing material: 5 parts of a mixture;
high modulus material: 8 parts of a mixture;
a toughening agent: 7 parts;
thickening agent: 2 parts of (1);
setting accelerator: 3 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is acrylate adhesive. The structural material is high-strength glass fiber. The stress absorbing material is a thermoplastic vulcanizate. The high modulus material is an aromatic polyethylene fiber. The toughening agent is chlorinated polyethylene with the fineness ranging from 120 meshes to 180 meshes. The thickening agent is hydroxypropyl starch. The coagulant is modified arylamine curing agent. The solvent is methanol.
The bridge expansion joint filling material of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of embodiment 1.
Example 14.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of (A);
the structural material is as follows: 7 parts;
stress absorbing material: 6 parts of (1);
high modulus material: 9 parts of (1);
a toughening agent: 8 parts of a mixture;
thickening agent: 4 parts;
setting accelerator: 5 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is acrylate adhesive. The structural material is high-strength glass fiber. The stress absorbing material is a thermoplastic vulcanizate. The high modulus material is polyethylene fiber. The toughening agent is chlorinated polyethylene with the fineness of 100-150 meshes. The thickening agent is hydroxypropyl starch. The coagulant is modified arylamine curing agent. The solvent is methanol.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 15.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of (A);
the structural material is as follows: 8 parts of a mixture;
stress absorbing material: 7 parts;
high modulus material: 10 parts of (A);
a toughening agent: 9 parts of (1);
thickening agent: 4 parts of a mixture;
setting accelerator: 5 parts of a mixture;
solvent: 10 parts.
Wherein the adhesive material is acrylate adhesive. The structural material is high-strength glass fiber. The stress absorbing material is a thermoplastic vulcanizate. The high modulus material is polyethylene fiber. The toughening agent is chlorinated polyethylene with the fineness of 120-200 meshes. The thickening agent is hydroxypropyl starch. The coagulant is modified arylamine curing agent. The solvent is methanol.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 16.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of (A);
the structural material is as follows: 10 parts of (A);
stress absorbing material: 8 parts of a mixture;
high modulus material: 12 parts of (1);
a toughening agent: 10 parts of (A);
thickening agent: 5 parts of a mixture;
setting accelerator: 6 parts of (1);
solvent: 10 parts.
Wherein the adhesive material is acrylate adhesive. The structural material is high-strength glass fiber. The stress absorbing material is a thermoplastic vulcanizate. The high modulus material is polyethylene fiber. The toughening agent is chlorinated polyethylene with the fineness ranging from 100 meshes to 230 meshes. The thickening agent is hydroxypropyl starch. The coagulant is modified arylamine curing agent. The solvent is methanol.
The filling material for the bridge expansion joint of the embodiment has better compression strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of the embodiment 1.
Example 17.
A filling material for bridge expansion joints is prepared from adhesive material, structural material, stress absorbing material, high-modulus material, toughening agent, thickening agent, coagulant and solvent.
The filling material for bridge expansion joints of the embodiment comprises, by mass,
adhesive material: 100 parts of a binder;
structural material: 7 parts;
stress absorbing material: 6 parts of (1);
high modulus material: 9 parts of (1);
toughening agent: 8 parts of a mixture;
thickening agent: 3 parts of a mixture;
setting accelerator: 4 parts;
solvent: 10 parts.
Wherein the adhesive material is acrylate adhesive. The structural material is high-strength glass fiber. The stress absorbing material is a thermoplastic vulcanizate. The high modulus material is polyethylene fiber. The flexibilizer is chlorinated polyethylene with the fineness of 100-250 meshes. The thickening agent is hydroxypropyl starch. The coagulant is modified arylamine curing agent. The solvent is methanol.
The bridge expansion joint filling material of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage rate within the range of embodiment 1.
Example 18.
A construction method adopting the filling material for the bridge expansion joint as in any one of embodiments 1 to 17 comprises the following construction steps:
step (1), mixing a toughening agent and a high-modulus material to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring to obtain a mixture III, and then sieving the mixture III to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring to obtain a mixture IV;
step (4), adding a thickening agent into the mixture IV and stirring to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing, and finishing construction after solidification.
It should be noted that the mixture III in the step (2) is firstly sieved and then is mixed with the structural material, so that the phenomenon that part of the stress absorbing material is agglomerated is found in the actual construction process. If not, the agglomerated stress absorbing material will affect subsequent interaction and cooperation with the structural material, high modulus material, etc.
And in the step (5), part of the mixture V is firstly coated on the surface of the bridge expansion joint to be constructed, so that the bonding of the interface between the steel in the bridge expansion joint to be constructed and the mixture V is ensured, and the mixture V can be prevented from being directly filled to cause the influence of bubbles or gaps on the interface position, thereby influencing the bonding condition of the interface.
The construction method adopting the bridge expansion joint filling material can realize high compactness filling of the bridge expansion joint, effectively improve the cohesiveness with a concrete interface under the high-temperature condition, improve and relieve the influence of the driving load and the displacement of the end part of the bridge caused by the temperature, and well bear the tensile stress caused by shrinkage deformation under the low-temperature condition.
Example 19.
A construction method adopting the filling material for the bridge expansion joint as any one of the embodiments 1 to 17 comprises the following construction steps:
mixing the toughening agent and the high-modulus material, wherein the mixing speed is 35 rad/min-55 rad/min, and the mixing time is 8 min-15 min, so as to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent, wherein the stirring speed is 600 rad/min-900 rad/min, and the stirring time is 3 min-8 min to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring at a stirring speed of 800 rad/min-1200 rad/min for 8 min-15 min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring, wherein the stirring speed is 800 rad/min-1200 rad/min, and the stirring time is 3 min-8 min to obtain a mixture IV;
step (4), adding the thickening agent into the mixture IV and stirring, wherein the stirring speed is 40 rad/min-50 rad/min, and the stirring time is 2 min-3 min, so as to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing, and finishing construction after solidification.
Compared with the construction method of the embodiment 18, the cured filling material for the bridge expansion joint of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage.
Example 20.
A construction method adopting the filling material for the bridge expansion joint as any one of the embodiments 1 to 17 comprises the following construction steps:
step (1), mixing the toughening agent and the high-modulus material, wherein the mixing speed is 35rad/min, and the mixing time is 8min, so as to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent, wherein the stirring speed is 600rad/min, and the stirring time is 3minn to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring at a stirring speed of 800rad/min for 8min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring, wherein the stirring speed is 800rad/min, and the stirring time is 3min to obtain a mixture IV;
step (4), adding the thickening agent into the mixture IV and stirring at the stirring speed of 40rad/min for 2min to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing, and finishing construction after solidification.
Compared with the construction method of the embodiment 18, the cured filling material for the bridge expansion joint of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage.
Example 21.
A construction method adopting the filling material for the bridge expansion joint as any one of the embodiments 1 to 17 comprises the following construction steps:
mixing a toughening agent and a high-modulus material, wherein the mixing speed is 55rad/min, and the mixing time is 15min to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent, wherein the stirring speed is 900rad/min, and the stirring time is 8min to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring at the speed of 1200rad/min for 15min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring, wherein the stirring speed is 1200rad/min, and the stirring time is 8min to obtain a mixture IV;
step (4), adding the thickening agent into the mixture IV and stirring at the stirring speed of 50rad/min for 3min to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing, and finishing construction after solidification.
Compared with the construction method of the embodiment 18, the cured filling material for the bridge expansion joint of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage.
Example 22.
A construction method adopting the filling material for the bridge expansion joint as in any one of embodiments 1 to 17 comprises the following construction steps:
mixing a toughening agent and a high-modulus material, wherein the mixing speed is 45rad/min, and the mixing time is 10min, so as to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent, wherein the stirring speed is 800rad/min, and the stirring time is 5min to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring at the stirring speed of 1000rad/min for 10min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring, wherein the stirring speed is 1000rad/min, and the stirring time is 5min to obtain a mixture IV;
step (4), adding the thickening agent into the mixture IV, and stirring at the stirring speed of 45rad/min for 2.5min to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing, and finishing construction after solidification.
Compared with the construction method of the embodiment 18, the cured filling material for the bridge expansion joint of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage.
Example 23.
A construction method adopting the filling material for the bridge expansion joint as in any one of embodiments 1 to 17 comprises the following construction steps:
step (1), mixing the toughening agent and the high-modulus material by a horizontal ribbon mixer, wherein the mixing speed is 45rad/min, and the mixing time is 10min, so as to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent by a handheld pneumatic stirrer, wherein the stirring speed is 800rad/min, and the stirring time is 5min to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring at the stirring speed of 1000rad/min for 10min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring, wherein the stirring speed is 1000rad/min, and the stirring time is 5min to obtain a mixture IV;
step (4), adding the thickening agent into the mixture IV and stirring at the stirring speed of 45rad/min for 2.5min to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed by adopting a coating device, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, then putting a coagulant into the mixture V in the reserved groove, vibrating and mixing by adopting a vibrating device, then carrying out surface finishing treatment, and finishing construction after solidification.
It should be noted that the horizontal ribbon mixer, the handheld pneumatic stirring, brushing device and the vibrating device of the present invention can be selected according to the implementation requirements, and the methods of using the horizontal ribbon mixer, the handheld pneumatic stirring, brushing device and the vibrating device are common knowledge of those skilled in the art, and will not be described in detail herein.
Compared with the construction method of the embodiment 18, the cured filling material for the bridge expansion joint of the embodiment has better compressive strength, tensile strength, elongation at break and low-temperature shrinkage.
Comparative example 1.
Compared with the bridge expansion joint filling material of the invention, the bridge expansion joint filling material of the present invention has no stress absorption material added, and the concrete construction steps comprise:
mixing 8 parts of chlorinated polyethylene and 9 parts of aromatic polyamide fiber according to parts by mass, wherein the mixing speed is 45rad/min, and the mixing time is 10min to obtain a mixture I; stirring 100 parts of acrylate adhesive and 10 parts of ethyl acetate, wherein the stirring speed is 800rad/min, and the stirring time is 5min to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring at the stirring speed of 1000rad/min for 10min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
adding 7 parts of boron fibers into the sieved material and stirring, wherein the stirring speed is 1000rad/min, and the stirring time is 5min to obtain a mixture IV;
step (4), adding 3 parts of propylene glycol sodium alginate into the mixture IV, and stirring at the stirring speed of 45rad/min for 2.5min to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, adding 4 parts of the modified arylamine curing agent into the mixture V in the reserved groove, vibrating and mixing, and after curing, finishing construction to obtain a comparison sample 1.
Comparative example 2.
Compared with the invention, the formula of the bridge expansion joint filling material of the comparative example does not contain structural materials, and the concrete construction steps comprise:
mixing 8 parts of chlorinated polyethylene and 9 parts of aromatic polyamide fiber according to parts by mass, wherein the mixing speed is 45rad/min, and the mixing time is 10min to obtain a mixture I; stirring 100 parts of acrylate rubber, 6 parts of polyurethane rubber and 10 parts of ethyl acetate, wherein the stirring speed is 800rad/min, and the stirring time is 5min to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring at the stirring speed of 1000rad/min for 10min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (3), adding 3 parts of propylene glycol sodium alginate into the sieved material, and stirring at the speed of 45rad/min for 2.5min to obtain a mixture IV;
and (4) coating part of the mixture IV on the surface of the bridge expansion joint to be constructed, filling the mixture IV into a reserved groove of the bridge expansion joint to be constructed, putting 4 parts of the modified aromatic amine curing agent into the mixture V of the reserved groove, vibrating and mixing, and finishing construction after curing to obtain a comparison sample 2.
Comparative example 3.
Compared with the formula of the bridge expansion joint filling material of the invention, the formula of the bridge expansion joint filling material of the invention does not add high modulus material, and the concrete construction steps comprise:
step (1), stirring 8 parts of chlorinated polyethylene by mass, wherein the stirring speed is 45rad/min, and the stirring time is 10min, so as to stir the material I; stirring 100 parts of acrylate rubber, 6 parts of polyurethane rubber and 10 parts of ethyl acetate, wherein the stirring speed is 800rad/min, and the stirring time is 5min to obtain a mixture II;
step (2), adding the stirred material I into the mixture II, stirring at the stirring speed of 1000rad/min for 10min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (3), adding 7 parts of boron fibers into the sieved material and stirring, wherein the stirring speed is 1000rad/min, and the stirring time is 5min to obtain a mixture IV;
step (4), adding 3 parts of propylene glycol sodium alginate into the mixture IV, and stirring at the stirring speed of 45rad/min for 2.5min to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting 4 parts of the modified aromatic amine curing agent into the mixture V of the reserved groove, vibrating and mixing, and finishing construction after curing to obtain a comparison sample 3.
Comparative example 4.
Compared with the invention, the formula of the bridge expansion joint filling material of the comparative example does not contain structural materials, stress absorbing materials, high modulus materials, toughening agents and thickening agents, and the concrete construction steps comprise:
step (1), according to the mass parts, stirring 100 parts of acrylate glue and 10 parts of ethyl acetate, wherein the stirring speed is 800rad/min, the stirring time is 5min to obtain a mixture I, and then sieving the mixture I through a square-hole sieve with the hole diameter of 0.3mm to obtain a sieved material;
step (2), adding 3 parts of propylene glycol sodium alginate into the sieved material, and stirring at the speed of 45rad/min for 2.5min to obtain a mixture II;
and (5) coating part of the mixture II on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting 4 parts of the modified aromatic amine curing agent into the mixture V of the reserved groove, vibrating and mixing, and finishing construction after curing to obtain a comparison sample 4.
TABLE 1 sample table obtained by using the filling material for bridge expansion joint and the construction method
The performance data for samples 1 to 16, comparative samples 1 to 4 are shown in table 2.
TABLE 2 Performance data Table of each sample
Note: the test method execution standard of tensile strength and elongation at break is carried out according to JT/T327-2004; the tensile strength is carried out according to a cube compressive strength test execution standard GBJ 81-85; the low-temperature shrinkage rate/20 ℃ test method comprises the steps of preparing a sample with the size of 10cm to 10cm, immersing the sample in room-temperature water for 15min, taking out water attached to the surface of the sample by using a wet towel, placing the sample in a refrigerator with the temperature of-20 ℃ to 22 ℃ for 16h, taking out the sample, immediately testing the three-dimensional geometric size of the sample, calculating the volume, and comparing the volume with the original volume, wherein the ratio of the shrinkage volume to the original volume is the low-temperature shrinkage rate.
According to the table 2, the compressive strength of the sample obtained by the bridge expansion joint filling material and the corresponding construction method is higher, and the tensile strength and the tensile deformation rate are obviously higher than those of the comparative examples 1 to 4, which shows that the bridge expansion joint filling material can well resist the deformation tensile stress of the bridge end, so that the bridge expansion joint filling material can bear the corresponding stress caused by the driving load and the temperature load. The filling material for the bridge expansion joint has low shrinkage rate under the influence of low temperature, and can meet the actual requirements of the bridge expansion joint on the filling material.
Meanwhile, the sample 7, the sample 15 and the sample 16 are completely the same according to the proportion of the bridge expansion joint filling material, and only slightly different in the parameters of the construction method, and the compression strength, the tensile strength, the elongation at break and the low-temperature shrinkage rate data of the three samples are not obviously different, namely, the construction method of the invention is used for ensuring stable performance of the bridge expansion joint after filling.
Therefore, the bridge expansion joint filling material and the construction method have obvious advantages in the aspect of bridge expansion joint deformation control.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a bridge expansion joint filling material which characterized in that: the main raw materials comprise an adhesive material, a structural material, a stress absorbing material, a high modulus material, a toughening agent, a thickening agent, a coagulant and a solvent.
2. The bridge expansion joint filling material of claim 1, wherein: based on the mass portion of the raw materials,
adhesive material: 80-120 parts;
structural material: 5-10 parts;
stress absorbing material: 4-8 parts;
high modulus material: 6-12 parts;
a toughening agent: 6-10 parts;
thickening agent: 1-6 parts;
setting accelerator: 2-6 parts;
solvent: 8 to 12 portions.
3. The bridge expansion joint filling material of claim 1, wherein: based on the mass portion of the raw materials,
adhesive material: 90-110 parts;
structural material: 6-8 parts;
stress absorbing material: 5-8 parts of a solvent;
high modulus material: 8-10 parts;
a toughening agent: 7-9 parts;
thickening agent: 2-5 parts;
setting accelerator: 3-5 parts;
solvent: 9 to 11 portions.
4. The bridge expansion joint filling material of claim 1, wherein: based on the mass portion of the raw materials,
adhesive material: 100 parts of a binder;
structural material: 7 parts;
stress absorbing material: 6 parts;
high modulus material: 9 parts of (1);
toughening agent: 8 parts of a mixture;
thickening agent: 3 parts of a mixture;
setting accelerator: 4 parts of a mixture;
solvent: 10 parts.
5. The filling material for bridge expansion joints according to any one of claims 1 to 4, wherein: the adhesive material is at least one of epoxy resin or acrylate adhesive;
the structural material is at least one of boron fiber or high-strength glass fiber;
the stress absorbing material is at least one of polyurethane rubber or thermoplastic vulcanized rubber;
the high modulus material is at least one of aromatic polyamide fiber or polyethylene fiber;
the toughening agent is at least one of acrylonitrile-butadiene-styrene copolymer or chlorinated polyethylene;
the thickening agent is at least one of propylene glycol sodium alginate or hydroxypropyl starch;
the coagulant is at least one of polyamide resin or modified arylamine curing agent;
the solvent is at least one of ethyl acetate or methanol.
6. The bridge expansion joint filling material of claim 5, wherein: when the adhesive material is epoxy resin, the epoxy resin is bisphenol A type epoxy or phenolic aldehyde type epoxy resin;
when the adhesive material is acrylate adhesive, the curing time of the acrylate adhesive ranges from 30min to 45min.
7. The bridge expansion joint filling material of claim 6, wherein: the fiber length of the structural material is 1 mm-3 mm, and the fiber diameter range of the structural material is 75 μm-300 μm;
the dynamic energy absorption rate range of the stress absorption material is 10% -30%, and the elongation at break range of the stress absorption material is 120% -150%;
the length range of the high modulus material is 1.5 mm-3 mm, and the initial modulus range of the high modulus material is 32N/tex-64N/tex;
the fineness range of the toughening agent is 100-250 meshes.
8. A construction method using the filling material for bridge expansion joints according to any one of claims 1 to 7, characterized in that the construction steps are as follows:
step (1), mixing a toughening agent and a high-modulus material to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent to obtain a mixture II;
step (2), adding the mixture I into the mixture II, stirring to obtain a mixture III, and then sieving the mixture III to obtain a sieved material;
step (3), adding the structural material into the sieved material and stirring to obtain a mixture IV;
step (4), adding the thickening agent into the mixture IV and stirring to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing, and finishing construction after solidification.
9. The construction method according to claim 8, wherein: the step (1) is to mix the toughening agent and the high modulus material, wherein the mixing speed is 35 rad/min-55 rad/min, and the mixing time is 8 min-15 min, so as to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent, wherein the stirring speed is 600 rad/min-900 rad/min, and the stirring time is 3 min-8 min to obtain a mixture II;
adding the mixture I into the mixture II for stirring, wherein the stirring speed is 800 rad/min-1200 rad/min, the stirring time is 8 min-15 min, obtaining a mixture III, and then sieving the mixture III through a square-hole sieve with the hole diameter of 0.3mm, thus obtaining a sieved material;
adding the structural material into the sieved material and stirring, wherein the stirring speed is 800 rad/min-1200 rad/min, and the stirring time is 3 min-8 min to obtain a mixture IV;
and (4) specifically, adding the thickening agent into the mixture IV, and stirring at the stirring speed of 40 rad/min-50 rad/min for 2 min-3 min to obtain a mixture V.
10. The construction method according to claim 9, wherein: the step (1) is to mix the toughening agent and the high modulus material by a horizontal ribbon mixer, wherein the mixing speed is 45rad/min, and the mixing time is 10min, so as to obtain a mixture I; stirring the gelled material, the stress absorption material and the solvent by a handheld pneumatic stirrer, wherein the stirring speed is 800rad/min, and the stirring time is 5min to obtain a mixture II;
adding the mixture I into the mixture II, stirring at a stirring speed of 1000rad/min for 10min to obtain a mixture III, and then sieving the mixture III through a square-hole sieve with the aperture of 0.3mm to obtain a sieved material;
adding the structural material into the sieved material and stirring, wherein the stirring speed is 1000rad/min, and the stirring time is 5min to obtain a mixture IV;
the step (4) is specifically to add the thickening agent into the mixture IV and stir the mixture IV at a stirring speed of 45rad/min for 2.5min to obtain a mixture V;
and (5) coating part of the mixture V on the surface of the bridge expansion joint to be constructed by adopting a coating device, filling the mixture V into a reserved groove of the bridge expansion joint to be constructed, putting a coagulant into the mixture V in the reserved groove, vibrating and mixing by adopting a vibrating device, carrying out surface facing treatment, and finishing construction after solidification.
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| CN202210998583.6A CN115141590A (en) | 2022-08-19 | 2022-08-19 | Bridge expansion joint filling material and construction method adopting same |
| CN202310971112.0A CN116987374A (en) | 2022-08-19 | 2023-08-03 | Bridge expansion joint filling material and construction method adopting same |
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| CN202210998583.6A CN115141590A (en) | 2022-08-19 | 2022-08-19 | Bridge expansion joint filling material and construction method adopting same |
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| CN116254089A (en) * | 2023-04-28 | 2023-06-13 | 重庆工业职业技术学院 | Quick repair material for bridge expansion joint and preparation method thereof |
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| CN108046658A (en) * | 2017-12-11 | 2018-05-18 | 山西省交通科学研究院 | A kind of bridge expanssion joint transition region high-strength high-toughness epoxy resin concrete and preparation method thereof |
| CN112322239A (en) * | 2020-10-29 | 2021-02-05 | 中铁第一勘察设计院集团有限公司 | Special glue for splicing UHPC (ultra high performance polycarbonate) bridges |
| CN114574134A (en) * | 2022-02-17 | 2022-06-03 | 交通运输部公路科学研究所 | Solvent-free low-shrinkage epoxy potting adhesive for repairing concrete cracks and preparation method thereof |
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| CN108046658A (en) * | 2017-12-11 | 2018-05-18 | 山西省交通科学研究院 | A kind of bridge expanssion joint transition region high-strength high-toughness epoxy resin concrete and preparation method thereof |
| CN112322239A (en) * | 2020-10-29 | 2021-02-05 | 中铁第一勘察设计院集团有限公司 | Special glue for splicing UHPC (ultra high performance polycarbonate) bridges |
| CN114574134A (en) * | 2022-02-17 | 2022-06-03 | 交通运输部公路科学研究所 | Solvent-free low-shrinkage epoxy potting adhesive for repairing concrete cracks and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116254089A (en) * | 2023-04-28 | 2023-06-13 | 重庆工业职业技术学院 | Quick repair material for bridge expansion joint and preparation method thereof |
| CN116254089B (en) * | 2023-04-28 | 2024-03-26 | 重庆工业职业技术学院 | Quick repair material for bridge expansion joint and preparation method thereof |
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