CN113998940A - Reinforced concrete for prestressed carbon fiber board - Google Patents
Reinforced concrete for prestressed carbon fiber board Download PDFInfo
- Publication number
- CN113998940A CN113998940A CN202111361314.0A CN202111361314A CN113998940A CN 113998940 A CN113998940 A CN 113998940A CN 202111361314 A CN202111361314 A CN 202111361314A CN 113998940 A CN113998940 A CN 113998940A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- parts
- reinforced concrete
- prestressed carbon
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses reinforced concrete for a prestressed carbon fiber board, and relates to the technical field of building materials. The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight: cement: 150-200 parts of water: 70-90 parts of clay: 25-35 parts of a reinforcing agent: 20-40 parts of polycarboxylic acid water reducing agent: 3-6 parts of dispersant: 1-5 parts; the preparation method comprises the following steps: (1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use; (2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate; (3) and (3) curing the concrete in the mould in the step (2). The prepared concrete is creatively added with a reinforcing agent, and the reinforcing agent consists of alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, so that the synergistic effect is realized, and the comprehensive performance of the concrete is improved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to reinforced concrete for a prestressed carbon fiber board.
Background
In recent years, the application of prestressed concrete structure technology is expanded to carbon fiber reinforced composite reinforced concrete members. The existing research shows that the prestress carbon fiber plate reinforced composite sheet material reinforcing technology is a technology which can fully utilize the light weight and high strength characteristics of the carbon fiber reinforced composite sheet material, greatly improve the cracking load and the yield load of a component, effectively delay the component cracking, limit the formation and the development of cracks, reduce the width of the cracks, inhibit the deformation of the component and improve the working performance of the structure. Therefore, the method for repairing and reinforcing the reinforced concrete member in the corrosive environment by adopting the prestressed carbon fiber plate is a reinforcing technology with a good application prospect. Although the concrete can be realized by adding the prestressed carbon fiber plate, the attached concrete has poor performance and is difficult to meet the fusion of the prestressed carbon fiber plate and the concrete.
Prior art, as application No.: CN201711087870.7, publication No.: CN107859351A discloses a many prestressing force carbon fiber plate reinforcing apparatus, it specifically realizes through adopting the anchor slab, but above-mentioned mode needs to set up mechanical structure alone, and the dependability of performance is low, increases unnecessary cost moreover, is not convenient for the dismantlement used repeatedly in later stage.
Disclosure of Invention
The invention aims to provide reinforced concrete for prestressed carbon fiber boards, which is creatively added with a reinforcing agent, wherein the reinforcing agent consists of alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, and has synergistic effect and improved comprehensive performance.
In order to achieve the purpose, the invention provides reinforced concrete for a prestressed carbon fiber board, which comprises the following raw materials in parts by weight:
cement: 150 to 200 portions of the raw materials are mixed,
water: 70-90 parts of (by weight),
clay: 25 to 35 portions of the total weight of the mixture,
a reinforcing agent: 20 to 40 portions of the raw materials, namely,
polycarboxylic acid water reducing agent: 3 to 6 portions of the raw materials are added,
dispersing agent: 1 to 5 portions.
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 160 to 180 portions of the mixture of the components,
water: 75-85 parts of a solvent, and the like,
clay: 28 to 33 portions of the weight percentage of the mixture,
a reinforcing agent: 22 to 35 portions of the weight percentage of the mixture,
polycarboxylic acid water reducing agent: 3 to 6 portions of the raw materials are added,
dispersing agent: 1 to 5 portions.
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
a reinforcing agent: 29 parts of (a) a reaction solution,
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO2the content range is 55-60 percent, and Al2O3The content is 35-40%, and the specific surface area is 10200m2/kg-14100m2Per kg, particle size D50The range is 5.5um-6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
in the step (1), the temperature of the warehouse is 25 ℃, and the air humidity range is 40-60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
The reinforced concrete for the prestressed carbon fiber board provided by the technical scheme has the following beneficial effects:
compared with the prior art, the reinforcing agent is introduced on the basis of traditional concrete, wherein the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, the four materials are synergistic with each other, the expansion degree of the concrete is improved, and the strength of the concrete is effectively increased along with the time extension.
Detailed Description
The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 150 parts by weight of (a) to (b),
water: 90 parts of (a) a mixture of (b),
clay: 25 parts of (a) to (b),
a reinforcing agent: 40 parts of (a) to (b),
polycarboxylic acid water reducing agent: 3 parts of (a) to (b),
dispersing agent: 5 parts of the raw materials.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 35 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 5.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 40%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Example 2
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 200 parts of (a) a mixture of (b),
water: 70 parts of (a) to (b),
clay: 35 parts of (a) a mixture of (b),
a reinforcing agent: 20 parts of (by weight), and mixing the components,
polycarboxylic acid water reducing agent: 6 parts of (a) a mixture of (b),
dispersing agent: 1 part.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO260% of Al2O3The content is 40 percent, and the specific surface area is 14100m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Example 3
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 160 parts of (a) to (b),
water: 85 parts of (A) and (B),
clay: 28 parts of (a) a mixture of (b),
a reinforcing agent: 35 parts of (a) a mixture of (b),
polycarboxylic acid water reducing agent: 3 parts of (a) to (b),
dispersing agent: 5 parts of the raw materials.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 35 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 5.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 40%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Example 4
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 180 parts of (A) and (B) of,
water: 75 parts of (a) a water-soluble polymer,
clay: 33 parts of (a) a reaction solution,
a reinforcing agent: 22 parts of (a) to (b),
polycarboxylic acid water reducing agent: 6 parts of (a) a mixture of (b),
dispersing agent: 1 part.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO260% of Al2O3The content is 40 percent, and the specific surface area is 14100m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 50%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Example 5
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
a reinforcing agent: 29 parts of (a) a reaction solution,
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 40 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Comparative example 1
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
a reinforcing agent: 29 parts of (a) a reaction solution,
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 40 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Comparative example 2
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
a reinforcing agent: 29 parts of (a) a reaction solution,
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 40 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the methyl orthosilicate to the sodium acetate is 3: 5: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Comparative example 3
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
a reinforcing agent: 29 parts of (a) a reaction solution,
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 40 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder, magnesium oxide powder and sodium acetate, wherein the mass ratio of the alumina powder to the magnesium oxide powder to the sodium acetate is 3: 6: 2.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Comparative example 4
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
a reinforcing agent: 29 parts of (a) a reaction solution,
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 40 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the reinforcing agent comprises alumina powder and magnesia powder, wherein the mass ratio of the alumina powder to the magnesia powder is 3: 6.
in the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Comparative example 5
The reinforced concrete for the prestressed carbon fiber board comprises the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
In the reinforced concrete for prestressed carbon fiber board described above,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO255% of Al2O3The content is 40 percent, and the specific surface area is 10200m2Per kg, particle size D50Is 6.5 um.
In the reinforced concrete for prestressed carbon fiber board described above,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
In the reinforced concrete for prestressed carbon fiber board described above,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the cement, the water, the clay, the polycarboxylic acid water reducing agent and the dispersing agent into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature of the warehouse in the step (1) is 25 ℃, and the air humidity is 60%.
In the reinforced concrete for prestressed carbon fiber board described above,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
In the reinforced concrete for prestressed carbon fiber board described above,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Comparative example 6
In the prior art, publication number CN102757205A discloses a pretensioned prestressed high-strength concrete and a production method of pretensioned prestressed high-strength concrete pipe pile, and the specification thereof discloses the following scheme:
"preparation 1m3The concrete comprises 340Kg of Tapai P & II52.5R cement, 730Kg of medium coarse sand, 120Kg of fine sand powder, 1220Kg of crushed stone, 141Kg of water and 9.6Kg of Tapai HXD-2R high-efficiency water reducer.
The sand rate of the embodiment is 37.4 percent, the crushed stone index of 5-25 mm is 9.5 percent, the cement is Tapai P. II52.5R cement (3-day bending resistance 6.0Mpa, 3-day compression resistance 32Mpa, 28-day bending resistance 9.0Mpa, 28-day compression resistance 60Mpa), the fine sand powder accounts for 26 percent of the total amount of the cementing material, and the specific surface area of the fine sand powder is 420m2Per Kg, the water-to-cement ratio was 0.31.
The production process of the embodiment comprises the following steps:
metering and stirring concrete raw materials, accurately metering sand, stone, cement, water, fine sand powder, a high-efficiency water reducing agent and the like according to a designed mixing ratio, and preparing the fresh concrete with low slump of 3cm (the slump of the concrete is less than 10cm and is low slump) by using a concrete forced mixer.
Comparative example 7
In the prior art, publication number CN102503271A discloses a C10 self-compacting concrete and a preparation method thereof, and the specification thereof discloses the following scheme:
"a self-compacting concrete, comprising the following components by weight:
1 part of cement, 0.49 part of water, 2.05 parts of sand, 2.6 parts of stone, 0.27 part of fly ash, 0.10 part of expanding agent and 0.015 part of additive.
The preparation process comprises the following steps:
1) cleaning raw material stone, stacking under the condition of moist and no open water, and storing cement and fly ash in a material warehouse for more than 3 days to enable the internal temperature to be close to the external temperature;
2) adding the additive into water for mixing for later use, adding sand and stones into a stirrer for stirring for 20s, and adding the powder into the stirrer to mix with the sand and stones for 20 s; and finally, adding the mixed solution of the additive and water into a stirrer to be mixed for 120s to obtain the self-compacting concrete.
Comparative example 8
In the prior art, publication No. CN109970407A discloses a water-based epoxy resin modified cement mortar for structural reinforcement and a preparation method thereof, and the specification of the water-based epoxy resin modified cement mortar discloses the following scheme:
"the emulsifying epoxy resin curing agent ZB-804 of this embodiment comprises the raw materials of epoxy resin E-51, epoxy resin E-44, triethylene tetramine, propylene glycol methyl ether, polyethylene glycol 400 and a proper amount of deionized water; the mol ratio of each component is as follows:
epoxy resin E-51: epoxy resin E-44: triethylene tetramine: propylene glycol methyl ether: polyethylene glycol 400 ═ 0.25: 0.30: 0.85: 0.15: 0.45 of;
the preparation method comprises the following steps:
(1) preparing the components according to the mixture ratio, wherein the epoxy resin E-51100 g, the epoxy resin E-44140 g, the triethylene tetramine 130g, the propylene glycol methyl ether 15g and the polyethylene glycol 188g are prepared;
(2) mixing epoxy resin E-51 and epoxy resin E-44 at room temperature, dissolving with propylene glycol methyl ether, and adding into a reaction vessel with a condensing and stirring device;
(3) slowly adding polyethylene glycol 400, adding a BF3 ether solution, heating to 78-82 ℃, and reacting for 2 hours;
(4) slowly adding triethylene tetramine, keeping the reaction temperature at 78-82 ℃, and reacting for 2 hours;
(5) distilling under reduced pressure to remove the small molecular amine;
(6) cooling to room temperature, and adjusting the pH value to 7.5 by using acetic acid;
(7) adding a proper amount of deionized water for dilution, and stirring to ensure that the solid content is 50% and the viscosity (25 ℃) is 2500 mPa.s.
The preparation method of the water-based epoxy resin modified cement mortar for structural reinforcement comprises the following steps:
the water-based epoxy resin modified cement mortar for structural reinforcement of the embodiment is composed of a component A, a component B, a component C and additional water, and the mass ratio is as follows:
the component A comprises: and B component: and C, component C: and (3) adding water externally: 2: 22: 1.40;
wherein (1 part ═ 1 kg): the component A consists of epoxy resin E-51100 parts, polyethylene glycol diglycidyl ether 15 parts, a flexibilizer CYH-277S12 parts and an organic silicon defoamer 0.2 part;
the component B consists of the emulsified waterborne epoxy resin curing agent ZB-804100 parts, the accelerator DMP-305 parts and the coupling agent KH-5601 parts, which are prepared in the example 1;
the component C comprises 100 parts of 52.5 ordinary portland cement, 250 parts of 20-70 mesh river sand, 15 parts of SF90 silica fume and 0.2 part of polycarboxylate water reducing agent.
The water-based epoxy resin-modified cement mortar for structural reinforcement of this example was prepared by the following steps:
1) preparation of component A: sequentially adding bisphenol A epoxy resin E-51100 parts, polyethylene glycol diglycidyl ether 15 parts, toughening agent CYH-277S12 parts and organic silicon defoaming agent 0.2 part into a reaction kettle, stirring for 10 minutes to obtain component A, packaging and storing;
2) preparation of the component B: sequentially adding ZB-804100 parts of the emulsified waterborne epoxy resin curing agent prepared in the example 1, 305 parts of the accelerator DMP and 5601 parts of the coupling agent KH into a reaction kettle, stirring for 3 minutes to obtain a component B, and packaging and storing;
3) preparation of component C: sequentially adding 100 parts of 52.5 common portland cement, 250 parts of 20-70 mesh-grade well-prepared river sand, 15 parts of SF90 silica fume and 0.2 part of polycarboxylate water reducing agent into a dry powder mortar mixer, stirring for 5 minutes to obtain a component C, and packaging and storing;
4) preparing water-based epoxy resin emulsion modified cement mortar for structural reinforcement: the mass ratio of the components is A: and B component: and C, component C: and (3) adding water externally: 2: 22: 1.40. the specific process comprises the following steps: stirring the component A and the component B for 5 minutes until a uniform milky emulsion is formed, then adding external water and stirring uniformly, finally adding the component C and stirring for 5 minutes to obtain the water-based epoxy resin emulsion modified cement mortar for structural reinforcement.
The water-cement ratio in the whole system is 0.35, and the water in the water-cement ratio comprises water contained in the emulsified water-based epoxy resin curing agent and external water. The mass of the externally added water is converted from the water content and the water-cement ratio of the emulsion type aqueous epoxy resin curing agent ".
Test protocol
The technical schemes of examples 1-5 and comparative examples 1-8 were selected and tested with reference to the following references:
(1) application No.: CN200610012294.5, publication No.: CN100552171 discloses a prestressed steel wire rope bending-resistant reinforced concrete structure and a reinforcing method thereof;
(2) application No.: CN201510982409.2, publication No.: CN105622009B, discloses a silica fume-free ultra-high performance concrete matrix and a preparation method thereof;
(3) zhengxiaohong, Huangpeyan, Jinlin, prestressed carbon fiber plate reinforced concrete beam prestress loss test research [ J ]. architecture structure academy 2015,36 (1);
(4) chenpengfei prestressed carbon fiber plate reinforced concrete beam construction technology research [ D ].2016 ];
(5) the method comprises the following steps of (1) researching a prestressed reinforced carbon fiber plate reinforced concrete beam test and calculating the bearing capacity [ J ] of a building structure, 2019, v.49; no.516(24) 107-.
TABLE 1 test results
As shown in Table 1, the concrete prepared in examples 1 to 5 in the present application has various test parameters superior to those of the prior art, as compared with comparative examples 1 to 8; specifically, the prepared concrete has the expansion degree ranging from 680mm to 715mm, the matrix compressive strength ranging from 142.5MPa to 147.9MPa in 14d, the matrix compressive strength ranging from 149.3MPa to 157.3MPa in 28d and the matrix compressive strength ranging from 156.7MPa to 168.7MPa in 56 d. The application sets contrast in comparative examples 1-5, which is convenient for bringing significant difference in effect to the newly added components in the application; for example, in comparative example 1, the mass ratio of the alumina powder, the magnesia powder, the methyl orthosilicate, and the sodium acetate is 1: 1: 1: 1, but it can be seen that the performance of each parameter is reduced, wherein the extension degree is only 653mm, the matrix compressive strength is only 138.7MPa in 14d, the matrix compressive strength is only 133.7MPa in 28d, and the matrix compressive strength is only 140.5MPa in 56d, the four substances have the effect of improving the reinforcement of the concrete, if the proportional relation of the amounts of the four substances is changed, the overall effect is affected, and if the proportional relation is adjusted to 3: 3: 5: 2. 3: 6: 5: 5. 2: 2: 5: 2, etc., but the obtained effect is inferior to that of comparative example 1; in comparative examples 2 and 3, the magnesium oxide powder and the methyl orthosilicate are removed, the expansion degree is greatly reduced, and parameters such as the compressive strength of the matrix at 14d, 28d and 56d are reduced; in comparative example 4, the two substances of methyl orthosilicate and sodium acetate were removed, and it was found that the two substances had a good effect on the improvement of the concrete properties; in comparative example 5, the entire reinforcing agent was removed and all parameters reached the lowest values. In conclusion, the introduction of the reinforcing agent has good improvement effect on the expansion degree and the compressive strength, and the addition of the alumina powder, the magnesia powder, the methyl orthosilicate, the sodium acetate and the like can reduce the possibility of internal cracking of concrete, improve the overall strength and realize the reinforcing effect by interacting with the preset carbon fiber plate.
In addition, in comparative examples 6 to 8, the overall effects are inferior to the data of examples 1 to 5 of the present application, and the reason is presumed as follows: (1) only coarse sand and fine sand powder are adopted, so that the reinforcement is difficult to realize, and particularly, the carbon fiber plates are easy to fall off due to interaction; (2) the addition of the fly ash easily causes the cracking phenomenon in the concrete; (3) the resin is used as a reinforcing agent, so that the effect is poor, and the phenomenon of internal cracking of concrete is easy to occur.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The reinforced concrete for the prestressed carbon fiber board is characterized by comprising the following raw materials in parts by weight:
cement: 150 to 200 portions of the raw materials are mixed,
water: 70-90 parts of (by weight),
clay: 25 to 35 portions of the total weight of the mixture,
a reinforcing agent: 20 to 40 portions of the raw materials, namely,
polycarboxylic acid water reducing agent: 3 to 6 portions of the raw materials are added,
dispersing agent: 1 to 5 portions.
2. The reinforced concrete for prestressed carbon fiber boards according to claim 1, comprising the following raw materials in parts by weight:
cement: 160 to 180 portions of the mixture of the components,
water: 75-85 parts of a solvent, and the like,
clay: 28 to 33 portions of the weight percentage of the mixture,
a reinforcing agent: 22 to 35 portions of the weight percentage of the mixture,
polycarboxylic acid water reducing agent: 3 to 6 portions of the raw materials are added,
dispersing agent: 1 to 5 portions.
3. The reinforced concrete for prestressed carbon fiber boards according to claim 2, comprising the following raw materials in parts by weight:
cement: 170 parts of (a) to (b),
water: 80 parts of (a) a water-soluble polymer,
clay: 30 parts of (a) to (b),
a reinforcing agent: 29 parts of (a) a reaction solution,
polycarboxylic acid water reducing agent: 5 parts of (a) a mixture of (b),
dispersing agent: and 3 parts.
4. The reinforced concrete for prestressed carbon fiber sheets according to claim 3,
the cement is P.O 42.5.5R portland cement;
the clay parameters are as follows:
SiO2the content range is 55-60 percent, and Al2O3The content is 35-40%, and the specific surface area is 10200m2/kg-14100m2Per kg, particle size D50The range is 5.5um-6.5 um.
5. The reinforced concrete for prestressed carbon fiber sheets according to claim 3,
the polycarboxylic acid water reducing agent is 412, and is purchased from Shenyang Xingzheng and chemical engineering Limited company;
the dispersant is WHDF-S, which is purchased from Shandong seven-wood Tianyi New Material Co.
6. The reinforced concrete for prestressed carbon fiber sheets according to claim 3,
the reinforcing agent comprises alumina powder, magnesia powder, methyl orthosilicate and sodium acetate, wherein the mass ratio of the alumina powder to the magnesia powder to the methyl orthosilicate to the sodium acetate is 3: 6: 5: 2.
7. the reinforced concrete for prestressed carbon fiber sheets according to claim 3,
the preparation method of the reinforced concrete for the prestressed carbon fiber board comprises the following steps:
(1) preparing cement, water, clay, a reinforcing agent, a polycarboxylic acid water reducing agent and a dispersing agent, and putting the materials into a warehouse for later use;
(2) transferring the raw materials in the step (1) into a stirrer, stirring and mixing, and pouring into a mold with a preset carbon fiber plate;
(3) and (3) curing the concrete in the mould in the step (2).
8. The reinforced concrete for prestressed carbon fiber sheets according to claim 7,
in the step (1), the temperature of the warehouse is 25 ℃, and the air humidity range is 40-60%.
9. The reinforced concrete for prestressed carbon fiber sheets according to claim 8,
the temperature for stirring and mixing in the step (2) is 50 ℃;
the stirring and mixing time in the step (2) is 6 hours;
and (3) standing the concrete poured into the mould in the step (2), wherein the standing pressure is 8MPa, the standing temperature is 35 ℃, the standing humidity is 55%, and the standing time is 72 h.
10. The reinforced concrete for prestressed carbon fiber sheets according to claim 9,
removing the die in the step (3), transferring the die into a curing room of a construction site, controlling the temperature of the curing room to be 25 ℃ and controlling the humidity of the curing room to be 90%; the curing period was 28 days, with water sprays on the concrete surface at 7d intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361314.0A CN113998940A (en) | 2021-11-17 | 2021-11-17 | Reinforced concrete for prestressed carbon fiber board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361314.0A CN113998940A (en) | 2021-11-17 | 2021-11-17 | Reinforced concrete for prestressed carbon fiber board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113998940A true CN113998940A (en) | 2022-02-01 |
Family
ID=79929309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111361314.0A Withdrawn CN113998940A (en) | 2021-11-17 | 2021-11-17 | Reinforced concrete for prestressed carbon fiber board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113998940A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180899A (en) * | 2022-07-19 | 2022-10-14 | 日照山河超细材料科技有限公司 | Preparation method and application of superfine material for high-performance concrete |
| CN116239953A (en) * | 2023-02-06 | 2023-06-09 | 四川新绿致和环保科技有限公司 | Waterproof coating construction process for waterproof construction in building field |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3202520A (en) * | 1964-03-02 | 1965-08-24 | Resco Products Inc | Concrete cement composition |
| CN101122177A (en) * | 2007-09-04 | 2008-02-13 | 华南理工大学 | Usage method of prestressed thin fiber board in concrete architecture |
| CN101624267A (en) * | 2009-08-11 | 2010-01-13 | 山西鑫秀工矿废渣利用有限公司 | Low-temperature ceramic curing agent of red mud from Bayer process |
| CN103274652A (en) * | 2013-06-20 | 2013-09-04 | 中建三局建设工程股份有限公司 | Reactive powder concrete for reinforcing buildings as well as preparation method and construction method thereof |
| CN105884246A (en) * | 2016-04-11 | 2016-08-24 | 河南省中原公路工程监理有限公司 | High-hardness additive for building concrete |
| CN106220096A (en) * | 2016-07-26 | 2016-12-14 | 蚌埠市方阵商品混凝土有限公司 | A kind of have the excellent durable and concrete of water resistance |
| CN112341100A (en) * | 2020-11-24 | 2021-02-09 | 上海美创建筑材料有限公司 | Special concrete for structural reinforcement and preparation method thereof |
| CN113185222A (en) * | 2021-04-23 | 2021-07-30 | 任义 | Concrete for building reinforcement and preparation method and application thereof |
-
2021
- 2021-11-17 CN CN202111361314.0A patent/CN113998940A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3202520A (en) * | 1964-03-02 | 1965-08-24 | Resco Products Inc | Concrete cement composition |
| CN101122177A (en) * | 2007-09-04 | 2008-02-13 | 华南理工大学 | Usage method of prestressed thin fiber board in concrete architecture |
| CN101624267A (en) * | 2009-08-11 | 2010-01-13 | 山西鑫秀工矿废渣利用有限公司 | Low-temperature ceramic curing agent of red mud from Bayer process |
| CN103274652A (en) * | 2013-06-20 | 2013-09-04 | 中建三局建设工程股份有限公司 | Reactive powder concrete for reinforcing buildings as well as preparation method and construction method thereof |
| CN105884246A (en) * | 2016-04-11 | 2016-08-24 | 河南省中原公路工程监理有限公司 | High-hardness additive for building concrete |
| CN106220096A (en) * | 2016-07-26 | 2016-12-14 | 蚌埠市方阵商品混凝土有限公司 | A kind of have the excellent durable and concrete of water resistance |
| CN112341100A (en) * | 2020-11-24 | 2021-02-09 | 上海美创建筑材料有限公司 | Special concrete for structural reinforcement and preparation method thereof |
| CN113185222A (en) * | 2021-04-23 | 2021-07-30 | 任义 | Concrete for building reinforcement and preparation method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115180899A (en) * | 2022-07-19 | 2022-10-14 | 日照山河超细材料科技有限公司 | Preparation method and application of superfine material for high-performance concrete |
| CN116239953A (en) * | 2023-02-06 | 2023-06-09 | 四川新绿致和环保科技有限公司 | Waterproof coating construction process for waterproof construction in building field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4359505B2 (en) | Process for producing particles for introduction into fresh concrete or coating compositions | |
| EP1758833B1 (en) | Improving the freeze-thaw durability of dry cast cementitious mixtures | |
| EP1286930B1 (en) | Admixture for cementitious compositions | |
| AU2021100389A4 (en) | An underwater self-compacting concrete for repairing canal lining panels | |
| CN104591635A (en) | Anti-cracking steam-curing-free ultra-high-strength high-toughness concrete and preparation method thereof | |
| CN113998940A (en) | Reinforced concrete for prestressed carbon fiber board | |
| CN102180628A (en) | High-strength micro-expansion prestress anchoring grouting material and preparation method thereof | |
| CN111533512B (en) | Preparation method of ductility delayed coagulation fine aggregate concrete with initial setting time of 48-72 h | |
| CN111423180A (en) | High-fluidity environment-friendly ultra-high-performance concrete and preparation method thereof | |
| CN111439973B (en) | Cement-based grouting material and preparation method and application thereof | |
| CN112521114A (en) | Fiber reinforced cement-based composite material for 3D printing and preparation method thereof | |
| CN107746219A (en) | Explosion-proof high temperature resistance concrete and preparation method thereof | |
| CN111320439B (en) | Concrete for renewable prefabricated part and preparation method thereof | |
| CN109650771B (en) | Shrinkage-reducing anti-cracking reinforcing agent, C50 machine-made sand concrete and preparation method | |
| CN114057425B (en) | Method for preparing polycarboxylic acid nanocrystalline core type early strength water-reducing complexing agent | |
| EP3331838B1 (en) | Castable material based on cementitious binder with shrinkage resistance | |
| CN112209683B (en) | Self-compacting C120 ready-mixed dry material concrete and preparation method thereof | |
| CN111606625B (en) | Formula and preparation method of C70 high-strength self-compacting concrete | |
| CA3172378A1 (en) | Dry cementitious material mixture for 3d-printing | |
| CN109704693B (en) | Sulphoaluminate cement-based self-compacting mortar and use method thereof | |
| CN111302740A (en) | Low-mixing high-strength all-lightweight aggregate concrete for members and preparation method thereof | |
| CN115594469A (en) | Low-drying-shrinkage 3D printing concrete and preparation method thereof | |
| CN114507042A (en) | Regenerated high-strength light concrete and preparation method thereof | |
| CN109354436B (en) | Special glue material bag for pre-prepared mortar suitable for washing sea sand and preparation method thereof | |
| CN112761376A (en) | Mortar reinforcing and repairing method for wall settlement cracking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220201 |