CN109455982A - Road and bridge construction bituminous concrete and preparation method thereof - Google Patents
Road and bridge construction bituminous concrete and preparation method thereof Download PDFInfo
- Publication number
- CN109455982A CN109455982A CN201811580633.9A CN201811580633A CN109455982A CN 109455982 A CN109455982 A CN 109455982A CN 201811580633 A CN201811580633 A CN 201811580633A CN 109455982 A CN109455982 A CN 109455982A
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- road
- bridge construction
- bituminous concrete
- pet fiber
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- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of road and bridge construction bituminous concretes and preparation method thereof, in parts by weight include: 120-125 parts of pitch；35-40 parts of flyash；Quartz sand: 30-40 parts；38-45 parts of rubble；4-6 parts of water-reducing agent；Regulator 7-10 parts of condensation；Emulsifier: 0.3-0.5 parts；Defoaming agent: 0.2 part；5-7 parts of fiber；Cellulose is by fiber monomer composition, and fiber monomer is made of steel fibre with the more PET fiber that steel fibre end is in collection pencil are sticked in, and at least part length of more PET fiber is different, and the present invention can effectively promote the crack resistance of concrete.
Description
Technical field
The present invention relates to concrete, in particular to road and bridge construction bituminous concrete and preparation method thereof.
Background technique
Bituminous concrete is commonly called as bitumen concrete, and artificial selection has the mineral aggregate of certain gradation composition, rubble or grating gravel, stone
Bits or sand, miberal powder etc., with a certain proportion of bitumen for road use material, the mixture made of mixing under the conditions of strict control.
Pitch is high-molecular organic material, and resistance to ag(e)ing is poor, after the several years, will generate aging cracking and destroys.
Summary of the invention
In view of the deficienciess of the prior art, the first object of the present invention is to provide a kind of road and bridge construction pitch coagulation
Soil, cracking resistance are good.
Above-mentioned technical purpose of the invention has the technical scheme that a kind of road and bridge construction pitch is mixed
It is solidifying native, include: in parts by weight
120-125 parts of pitch；
35-40 parts of flyash；
Quartz sand: 30-40 parts；
38-45 parts of rubble；
4-6 parts of water-reducing agent；
Regulator 7-10 parts of condensation；
Emulsifier: 0.3-0.5 parts；
Defoaming agent: 0.2 part；
5-7 parts of fiber；
For cellulose by fiber monomer composition, fiber monomer is in more for collecting pencil with steel fibre end is sticked in by steel fibre
PET fiber composition, and at least part length of more PET fiber is different.
Flyash, quartz sand and sandstone are used as aggregate, and the use of flyash, quartz sand and water-reducing agent can be promoted
Mobility, consequently facilitating flowing dispersion of the cellulose in concrete, cellulose is in concrete, since PET fiber is soft,
When concrete stirs, the PET fiber fiber of different fiber monomers can occur mutually to wind, so that leading between steel fibre
It crosses PET fiber and forms certain connection relationship, so that the globality of concrete is stronger, be not likely to produce crackle；Fiber simultaneously
The length of more PET fiber of monomer is different, it is not easy to occur from winding.
Further, longest length ratio is 3:1 in the steel fibre and PET fiber.
Steel fibre is to primarily serve cracking resistance effect, its main connection function of PET fiber also has certain cracking resistance certainly and makees
With, therefore length of steel fiber is longer than PET fiber, determines that aforementioned proportion is more appropriate through overtesting.
Further, PET fiber length is symmetrically arranged toward two sides step increments from most intermediate PET fiber.
In this way, the PET fiber of two sides is longer, it is easier to be wound with the PET fiber of other its fiber monomers.
Further, the condensation regulator is sodium sulphate.
Further, water-reducing agent is polycarboxylate water-reducer.
Further, the emulsifier is lauryl ammonium chloride.
Further, the defoaming agent is polyethers defoaming agent.
The second object of the present invention is to provide a kind of preparation method of road and bridge construction bituminous concrete, including walks as follows
It is rapid: pitch being heated to 160-180 DEG C, flyash, quartz sand, rubble is added and stirs 30S；Add 4-6 parts of water-reducing agent, condensation
Regulator, swelling agent, defoaming agent stir 60S；5-7 parts of cellulose are eventually adding, stirs 20S at 140 DEG C.
In conclusion the invention has the following advantages: the present invention is mixed by the structure of improvement cellulose to be promoted
The whole cracking resistance of solidifying soil.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of steel fibre and PET fiber in embodiment 1；
Fig. 2 is the connection schematic diagram of steel fibre and PET fiber in embodiment 4；
Fig. 3 is the connection schematic diagram of steel fibre and PET fiber in embodiment 5.
Appended drawing reference: 1, steel fibre；2, PET fiber.
Specific embodiment
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Embodiment 1: a kind of road and bridge construction bituminous concrete, including pitch, flyash, quartz sand, rubble, water-reducing agent,
Condense regulator, emulsifier, defoaming agent, cellulose.
For cellulose by fiber monomer composition, fiber monomer is by steel fibre 1 and sticks in 1 end of steel fibre in collection pencil
More PET fiber 2 form, and at least part length of more PET fiber 2 is different.
The section of steel fibre 1 is rectangle, and long 0.6mm, wide 0.2mm, the length of steel fibre 1 is 30mm；PET fiber 2
Section is circle, and diameter is 0.1mm, and longest is 10mm, and shortest is 4mm.The length of PET fiber 2 is from most intermediate PET
Fiber 2 is symmetrically toward two sides step increments arrangement (such as Fig. 1).
Pitch model 70#, condensation regulator are sodium sulphate；Water-reducing agent is polycarboxylate water-reducer, model DH-4005
Type；Emulsifier is lauryl ammonium chloride；Defoaming agent is polyethers defoaming agent, model Germany AGITANP803.
Road and bridge construction bituminous concrete the preparation method comprises the following steps: pitch is heated to 160-180 DEG C, flyash, stone is added
Sand, rubble stir 30S；Water-reducing agent, condensation regulator, swelling agent, defoaming agent are added, 60S is stirred；It is eventually adding fiber
Element stirs 20S at 140 DEG C.
Embodiment 2,3, road and bridge construction bituminous concrete, the difference from embodiment 1 is that constituent content is different, it is specific
Such as the following table 1.
Table 1: the bituminous concrete component and its content schematic diagram of embodiment 1-3
Embodiment 4, a kind of road and bridge construction bituminous concrete, unlike the first embodiment: PET fiber length is from most
Between PET fiber symmetrically toward two sides step wise reduction arrange (such as Fig. 2).
Embodiment 5: a kind of road and bridge construction bituminous concrete, unlike the first embodiment: PET fiber length is from one layer
Successively decrease arrangement (such as Fig. 3) toward the other side.
Comparative example 1: a kind of road and bridge construction bituminous concrete, unlike the first embodiment: cellulose by steel fibre and
PET fiber composition, steel fibre and PET fiber are dispersity, according to weight ratio 1:3.
Comparative example 2: a kind of road and bridge construction bituminous concrete, unlike the first embodiment: cellulose by steel fibre and
PET fiber composition, steel fibre and PET fiber are dispersity, according to weight ratio 1:1.
Comparative example 3: a kind of road and bridge construction bituminous concrete, unlike the first embodiment: cellulose by steel fibre and
PET fiber composition, steel fibre and PET fiber are dispersity, according to weight ratio 3:1.
Comparative example 4: a kind of road and bridge construction bituminous concrete, unlike the first embodiment: all PET of cellulose are fine
Dimension.
Comparative example 5: a kind of road and bridge construction bituminous concrete, unlike the first embodiment: all steel of cellulose are fine
Dimension.
According to embodiment 1-5, the formula and method of comparative example 1-3 prepares concrete sample, the main component of cracking resistance die trial
Including pedestal, side form, core model and upper cover；Core model is made of a steel, and other component is made of organic glass.Sample is annular shape, interior
Diameter 90mm, outer diameter 305mm, height 100mm.
The upper cover for opening cracking resistance die trial divides manufactured concrete batching system scuppit in two layers of loading cracking resistance die trial, often
The charging thickness of layer is roughly equal, is equably plugged and pounded with tamper, plugs and pounds number by every 10000 square centimeters and is at least no less than 12
Secondary, tamper should reach die trial bottom when plugging and pounding bottom；When plugging and pounding upper layer, tamper should be inserted into lower layer 20-30mm behind upper layer；It inserts
Tamper should be vertical when smashing, and must not tilt.Accomplish die trial without any bubble, it is suitable for reading with lacking with adding until die trial is concordant and strike off.
The cracking resistance die trial of forming is put into demoulding after conserving for 24 hours in the environment that temperature is 20 ± 2 degree.Cracking resistance after demoulding
Test specimen be immediately placed in temperature be 30 ± 2 degree, relative humidity be (50 ± 5) % environment in, and test specimen top surface coat silica gel into
Row encapsulation process.Whether there is crack generation on deformeter or amplification sem observation ring facade, and the time for recording crack generation is (every
10 samples of group selection, take mean value).
| The time (second) that crack generates | |
| Embodiment 1 | 42.3 |
| Embodiment 2 | 42.4 |
| Embodiment 3 | 41.8 |
| Embodiment 4 | 35.2 |
| Embodiment 5 | 35.8 |
| Comparative example 1 | 20.7 |
| Comparative example 2 | 21.4 |
| Comparative example 3 | 20.6 |
| Comparative example 4 | 21.3 |
| Comparative example 5 | 22.6 |
Show that this programme by the way that steel fibre and PET fiber to be combined, improves the whole of concrete by above-mentioned experiment
Body crack resistance.
Claims (8)
1. a kind of road and bridge construction bituminous concrete, which is characterized in that include: in parts by weight
120-125 parts of pitch；
35-40 parts of flyash；
Quartz sand: 30-40 parts；
38-45 parts of rubble；
4-6 parts of water-reducing agent；
Regulator 7-10 parts of condensation；
Emulsifier: 0.3-0.5 parts；
Defoaming agent: 0.2 part；
5-7 parts of cellulose；
For cellulose by fiber monomer composition, fiber monomer is in more for collecting pencil with steel fibre end is sticked in by steel fibre
PET fiber composition, and at least part length of more PET fiber is different.
2. road and bridge construction bituminous concrete according to claim 1, it is characterized in that: in the steel fibre and PET fiber
Longest length ratio is 3:1, and shortest length ratio is 15:2 in the steel fibre and PET fiber.
3. road and bridge construction bituminous concrete according to claim 1, it is characterized in that: PET fiber length is certainly most intermediate
PET fiber is symmetrically arranged toward two sides step increments.
4. road and bridge construction bituminous concrete according to claim 1, it is characterized in that: the condensation regulator is sulfuric acid
Sodium.
5. road and bridge construction bituminous concrete according to claim 1, it is characterized in that: water-reducing agent is polycarboxylate water-reducer.
6. road and bridge construction bituminous concrete according to claim 1, it is characterized in that: the emulsifier is dodecyl chloride
Change ammonium.
7. road and bridge construction bituminous concrete according to claim 1, it is characterized in that: the defoaming agent is polyethers defoaming
Agent.
8. a kind of preparation method of road and bridge construction bituminous concrete, characterized in that include the following steps: for pitch to be heated to
160-180 DEG C, flyash, quartz sand, rubble is added and stirs 30S；Add 4-6 parts of water-reducing agent, condensation regulator, swelling agent,
Defoaming agent stirs 60S；5-7 parts of cellulose are eventually adding, stirs 20S at 140 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580633.9A CN109455982B (en) | 2018-12-24 | 2018-12-24 | Asphalt concrete for road and bridge construction and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811580633.9A CN109455982B (en) | 2018-12-24 | 2018-12-24 | Asphalt concrete for road and bridge construction and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109455982A true CN109455982A (en) | 2019-03-12 |
| CN109455982B CN109455982B (en) | 2021-09-03 |
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| CN201811580633.9A Active CN109455982B (en) | 2018-12-24 | 2018-12-24 | Asphalt concrete for road and bridge construction and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113563019A (en) * | 2020-04-29 | 2021-10-29 | 淮安鑫塬铭新材料有限公司 | Polyester concrete prefabricated cover plate |
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| CN101821448A (en) * | 2007-07-27 | 2010-09-01 | 道康宁公司 | Fiber structure and method of making same |
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| CN113563019A (en) * | 2020-04-29 | 2021-10-29 | 淮安鑫塬铭新材料有限公司 | Polyester concrete prefabricated cover plate |
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| CN109455982B (en) | 2021-09-03 |
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