CN106220094A - A kind of modified concrete with excellent performance of resisting cracking - Google Patents
A kind of modified concrete with excellent performance of resisting cracking Download PDFInfo
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- CN106220094A CN106220094A CN201610596599.9A CN201610596599A CN106220094A CN 106220094 A CN106220094 A CN 106220094A CN 201610596599 A CN201610596599 A CN 201610596599A CN 106220094 A CN106220094 A CN 106220094A
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- resisting cracking
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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
- 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
- C04B28/04—Portland cements
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1051—Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of modified concrete with excellent performance of resisting cracking, its raw material includes by weight: 52.5 grades of Portland cements 100 parts, breeze 12 16 parts, 15 25 parts of flyash, ballast powder 5 15 parts, river sand 80 120 parts, 45 65 parts of stone, bentonite 39 parts, modified polypropylene fiber 69 parts, polyolefine fiber 46 parts, steel fibre 24 parts, nitrile rubber rubber powder 23 parts, epoxy resin latex 23 parts, hydroxypropylcelluloether ether 13 parts, aminosulfonate-based superplasticizer ZM 224 parts, 25 30 parts of water.The concrete of the present invention has the performance of resisting cracking of excellence.
Description
Technical field
The present invention relates to concrete field, particularly relate to a kind of modified concrete with excellent performance of resisting cracking.
Background technology
At present, concrete is of paramount importance building structure material, its be widely used in road, build, decorate, heavy industry
The fields such as industry.But the concrete in high load-bearing, HI high impact environment, the shock resistance of simple concrete material is with anti-
Fragility can be relatively low, therefore needs exploitation badly and a kind of has the modified concrete of excellent performance of resisting cracking to solve of the prior art asking
Topic.
Summary of the invention
For solving technical problem present in background technology, it is mixed that the present invention proposes a kind of modification with excellent performance of resisting cracking
Solidifying soil, has the performance of resisting cracking of excellence.
A kind of modified concrete with excellent performance of resisting cracking that the present invention proposes, its raw material includes by weight: 52.5
Level Portland cement 100 parts, breeze 12-16 part, flyash 15-25 part, ballast powder 5-15 part, river sand 80-120 part, stone
Sub-45-65 part, bentonite 3-9 part, modified polypropylene fiber 6-9 part, polyolefine fiber 4-6 part, steel fibre 2-4 part, butyronitrile rubber
Glue rubber powder 2-3 part, epoxy resin latex 2-3 part, hydroxypropylcelluloether ether 1-3 part, aminosulfonate-based superplasticizer ZM-2 2-4 part, water
25-30 part.
Preferably, modified polypropylene fiber is prepared by following technique: by polypropylene fibre, silane coupler and tertiary fourth
Base hydrogen peroxide joins in acetone soln, then stands 2-4h, is then heated to 45-55 DEG C, is incubated 15-25min, the coldest
But to room temperature, wash 1-3h through acetone reflux, in 65-75 DEG C of dry 1-3h, then in 75-85 DEG C of decocting in water 20-40min, take
Being cooled to room temperature after going out, normal temperature drying 2-4d obtains modified polypropylene fiber.
Preferably, in the preparation technology of modified polypropylene fiber, the mass fraction of silane coupler is 18-22%, tertiary fourth
The mass fraction of base hydrogen peroxide is 0.4-0.6%.
Preferably, in the preparation technology of modified polypropylene fiber, silane coupler is silane coupling A-171, silane idol
One or more compositionss in connection agent A-174, silane coupling A-1100 and silane coupling A-1120.
Preferably, in the preparation technology of modified polypropylene fiber, polypropylene fibre, silane coupler and tert-butyl hydroperoxide
The weight ratio of hydrogen is 2-8:1-4:3-5.
Preferably, polyolefine fiber is undaform, a diameter of 0.77mm, a length of 50mm, and draw ratio is 65, tensile strength
≥600N/mm2。
Preferably, a diameter of 0.9mm of steel fibre, a length of 60mm, draw ratio is 67, tensile strength >=1100N/mm2。
Preferably, the modulus of fineness 2.8-3.2 of river sand.
The preparation technology of the present invention is as follows: by 52.5 grades of Portland cements, breeze, flyash, silicon ash, river sand, stone
Son, bentonite, modified polypropylene fiber, polyolefine fiber, steel fibre, nitrile rubber rubber powder are uniformly mixed so as to obtain material A；By asphalt mixtures modified by epoxy resin
Fat liquor, hydroxypropylcelluloether ether, aminosulfonate-based superplasticizer ZM-2 add the water of 6 times on the basis of hydroxypropylcelluloether ether weight
Mixing, adds material A mixing, adds the mixing of remaining water, and Cheng Mo, maintenance obtains crack resistence concrete.
A kind of modified concrete with excellent performance of resisting cracking of the present invention, its raw material includes 52.5 grades of normal silicate water
Mud, breeze, flyash, ballast powder, river sand, stone, bentonite, modified polypropylene fiber, polyolefine fiber, steel fibre, butyronitrile
Rubber rubber powder, epoxy resin latex, hydroxypropylcelluloether ether, aminosulfonate-based superplasticizer ZM-2 and water.Wherein common with 52.5 grades
Portland cement is gel, with breeze, flyash, ballast powder, river sand, stone and bentonite for gathering materials, with modified polypropene
Fiber, polyolefine fiber, steel fibre, nitrile rubber rubber powder, epoxy resin latex and hydroxypropylcelluloether ether as modified filler,
Using aminosulfonate-based superplasticizer ZM-2 and water as auxiliary agent, the concrete prepared has the strong energy of resistance of excellence.Wherein add
Modified polypropylene fiber with polypropylene fibre, silane coupler and tert-butyl hydroperoxide as raw material, with tert-butyl hydroperoxide
Hydrogen is oxidant, is modified polypropylene fibre by silane coupler, the modified polypropylene fiber surface more overstriking obtained
Rough, more fit with cement based, be effectively increased the performance of resisting cracking of the concrete of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail, it should be appreciated that embodiment is served only for this is described
Bright rather than be used for limiting the invention, any made on the basis of the present invention amendment, equivalent etc. is all at this
In bright protection domain.
In detailed description of the invention, 52.5 grades of Portland cements 100 parts；The weight portion of breeze can be 12 parts, 12.5
Part, 13 parts, 13.5 parts, 14 parts, 14.5 parts, 15 parts, 15.5 parts, 16 parts；The weight portion of flyash can be 15 parts, 16 parts, 17
Part, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts；The weight portion of ballast powder can be 5 parts, 6 parts, 7 parts, 8
Part, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts；The weight portion of river sand can be 80 parts, 85 parts, 90 parts, 95 parts,
100 parts, 105 parts, 110 parts, 115 parts, 120 parts；The weight portion of stone can be 45 parts, 46 parts, 47 parts, 48 parts, 49 parts, 50
Part, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65
Part；Bentonitic weight portion can be 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts；The weight portion of modified polypropylene fiber is permissible
It it is 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts；The weight portion of polyolefine fiber can be 4 parts, 4.5 parts, 5 parts, 5.5
Part, 6 parts；The weight portion of steel fibre can be 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts；The weight portion of nitrile rubber rubber powder can be
2 parts, 2.1 parts, 2.2 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, 3 parts；Epoxy resin latex
Weight portion can be 2 parts, 2.1 parts, 2.2 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, 3 parts；Hydroxyl
The weight portion of propyl cellulose ether can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts；The weight portion of aminosulfonate-based superplasticizer ZM-2
It can be 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts；The weight portion of water can be 25 parts, 25.5 parts, 26 parts, 26.5 parts, 27 parts,
27.5 parts, 28 parts, 28.5 parts, 29 parts, 29.5 parts, 30 parts.
Embodiment 1
A kind of modified concrete with excellent performance of resisting cracking that the present invention proposes, its raw material includes by weight: 52.5
Level Portland cement 100 parts, breeze 14 parts, 20 parts of flyash, ballast powder 10 parts, river sand 100 parts, 55 parts of stone, swelling
6 parts of soil, modified polypropylene fiber 7.5 parts, polyolefine fiber 5 parts, steel fibre 3 parts, nitrile rubber rubber powder 2.5 parts, epoxy resin
Emulsion 2.5 parts, hydroxypropylcelluloether ether 2 parts, aminosulfonate-based superplasticizer ZM-2 3 parts, 27.5 parts of water.
Wherein, polyolefine fiber is undaform, a diameter of 0.77mm, a length of 50mm, and draw ratio is 65, and tensile strength is
600N/mm2.A diameter of 0.9mm of steel fibre, a length of 60mm, draw ratio is 67, and tensile strength is 1100N/mm2.River sand
Modulus of fineness 3.1.
Modified polypropylene fiber is prepared by following technique: 5 parts of polypropylene fibres, 2.5 parts of quality are divided by weight
Number be 20% silane coupling A-171 and the tert-butyl hydroperoxide that 4 parts of mass fractions are 0.5% join acetone soln
In, then stand 3h, be then heated to 50 DEG C, be incubated 20min, be then cooled to room temperature, wash 2h through acetone reflux, in 70
DEG C dry 2h, then in 80 DEG C of decocting in water 30min, is cooled to room temperature after taking-up, normal temperature drying 3d obtains modified polypropylene fiber.
Embodiment 2
A kind of modified concrete with excellent performance of resisting cracking that the present invention proposes, its raw material includes by weight: 52.5
Level Portland cement 100 parts, breeze 12 parts, 25 parts of flyash, ballast powder 5 parts, river sand 120 parts, 45 parts of stone, bentonite
9 parts, modified polypropylene fiber 6 parts, polyolefine fiber 6 parts, steel fibre 2 parts, nitrile rubber rubber powder 3 parts, epoxy resin latex 2
Part, hydroxypropylcelluloether ether 3 parts, aminosulfonate-based superplasticizer ZM-2 2 parts, 30 parts of water.
Wherein, polyolefine fiber is undaform, a diameter of 0.77mm, a length of 50mm, and draw ratio is 65, and tensile strength is
620N/mm2.A diameter of 0.9mm of steel fibre, a length of 60mm, draw ratio is 67, and tensile strength is 1150N/mm2.River sand
Modulus of fineness 2.8.
Modified polypropylene fiber is prepared by following technique: by weight by 2 parts of polypropylene fibres, 4 parts of mass fractions
Be 18% silane coupling A-174 and the tert-butyl hydroperoxide that 5 parts of mass fractions are 0.4% join in acetone soln,
Then stand 4h, be then heated to 45 DEG C, be incubated 25min, be then cooled to room temperature, wash 1h through acetone reflux, in 75 DEG C
Being dried 1h, then in 85 DEG C of decocting in water 20min, be cooled to room temperature after taking-up, normal temperature drying 4d obtains modified polypropylene fiber.
Embodiment 3
A kind of modified concrete with excellent performance of resisting cracking that the present invention proposes, its raw material includes by weight: 52.5
Level Portland cement 100 parts, breeze 16 parts, 15 parts of flyash, ballast powder 15 parts, river sand 80 parts, 65 parts of stone, bentonite
3 parts, modified polypropylene fiber 9 parts, polyolefine fiber 4 parts, steel fibre 4 parts, nitrile rubber rubber powder 2 parts, epoxy resin latex 3
Part, hydroxypropylcelluloether ether 1 part, aminosulfonate-based superplasticizer ZM-2 4 parts, 25 parts of water.
Wherein, polyolefine fiber is undaform, a diameter of 0.77mm, a length of 50mm, and draw ratio is 65, and tensile strength is
630N/mm2.A diameter of 0.9mm of steel fibre, a length of 60mm, draw ratio is 67, and tensile strength is 1130N/mm2.River sand
Modulus of fineness 3.2.
Modified polypropylene fiber is prepared by following technique: by weight by 8 parts of polypropylene fibres, 1 part of mass fraction
Be 22% silane coupling A-1100 and the tert-butyl hydroperoxide that 3 parts of mass fractions are 0.6% join in acetone soln,
Then stand 2h, be then heated to 55 DEG C, be incubated 15min, be then cooled to room temperature, wash 3h through acetone reflux, in 65 DEG C
Being dried 3h, then in 75 DEG C of decocting in water 40min, be cooled to room temperature after taking-up, normal temperature drying 2d obtains modified polypropylene fiber.
Embodiment 4
A kind of modified concrete with excellent performance of resisting cracking that the present invention proposes, its raw material includes by weight: 52.5
Level Portland cement 100 parts, breeze 13 parts, 22 parts of flyash, ballast powder 8 parts, river sand 115 parts, 48 parts of stone, bentonite
8 parts, modified polypropylene fiber 7 parts, polyolefine fiber 5.5 parts, steel fibre 2.5 parts, nitrile rubber rubber powder 2.8 parts, epoxy resin
Emulsion 2.2 parts, hydroxypropylcelluloether ether 2.5 parts, aminosulfonate-based superplasticizer ZM-2 2.5 parts, 29 parts of water.
Wherein, polyolefine fiber is undaform, a diameter of 0.77mm, a length of 50mm, and draw ratio is 65, and tensile strength is
660N/mm2.A diameter of 0.9mm of steel fibre, a length of 60mm, draw ratio is 67, and tensile strength is 1200N/mm2.River sand
Modulus of fineness 2.9.
Modified polypropylene fiber is prepared by following technique: by weight by 3 parts of polypropylene fibres, 3 parts of mass fractions
Be 19% silane coupling A-1120 and the tert-butyl hydroperoxide that 4.5 parts of mass fractions are 0.45% join acetone soln
In, then stand 3.5h, be then heated to 48 DEG C, be incubated 22min, be then cooled to room temperature, wash 1.5h through acetone reflux,
In 72 DEG C of dry 1.5h, then in 82 DEG C of decocting in water 25min, being cooled to room temperature after taking-up, normal temperature drying 3.5d obtains modified poly-third
Alkene fiber.
Embodiment 5
A kind of modified concrete with excellent performance of resisting cracking that the present invention proposes, its raw material includes by weight: 52.5
Level Portland cement 100 parts, breeze 15 parts, 18 parts of flyash, ballast powder 12 parts, river sand 85 parts, 62 parts of stone, bentonite
4 parts, modified polypropylene fiber 8 parts, polyolefine fiber 4.5 parts, steel fibre 3.5 parts, nitrile rubber rubber powder 2.2 parts, epoxy resin
Emulsion 2.8 parts, hydroxypropylcelluloether ether 1.5 parts, aminosulfonate-based superplasticizer ZM-2 3.5 parts, 26 parts of water.
Wherein, polyolefine fiber is undaform, a diameter of 0.77mm, a length of 50mm, and draw ratio is 65, and tensile strength is
800N/mm2.A diameter of 0.9mm of steel fibre, a length of 60mm, draw ratio is 67, and tensile strength is 1400N/mm2.River sand
Modulus of fineness 3.1.
Modified polypropylene fiber is prepared by following technique: by weight by 7 parts of polypropylene fibres, 2 parts of mass fractions
Be 21% silane coupling A-171 and the tert-butyl hydroperoxide that 3.5 parts of mass fractions are 0.55% join acetone soln
In, then stand 2.5h, be then heated to 52 DEG C, be incubated 18min, be then cooled to room temperature, wash 2.5h through acetone reflux,
In 68 DEG C of dry 2.5h, then in 78 DEG C of decocting in water 35min, being cooled to room temperature after taking-up, normal temperature drying 2.5d obtains modified poly-third
Alkene fiber.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (8)
1. a modified concrete with excellent performance of resisting cracking, it is characterised in that its raw material includes by weight: 52.5 grades general
Logical portland cement 100 parts, breeze 12-16 part, flyash 15-25 part, ballast powder 5-15 part, river sand 80-120 part, stone 45-
65 parts, bentonite 3-9 part, modified polypropylene fiber 6-9 part, polyolefine fiber 4-6 part, steel fibre 2-4 part, nitrile rubber rubber powder
2-3 part, epoxy resin latex 2-3 part, hydroxypropylcelluloether ether 1-3 part, aminosulfonate-based superplasticizer ZM-2 2-4 part, water 25-30
Part.
The modified concrete with excellent performance of resisting cracking the most according to claim 1, it is characterised in that modified polypropene is fine
Dimension is prepared by following technique: join in acetone soln by polypropylene fibre, silane coupler and tert-butyl hydroperoxide,
Then stand 2-4h, be then heated to 45-55 DEG C, be incubated 15-25min, be then cooled to room temperature, wash 1-through acetone reflux
3h, in 65-75 DEG C of dry 1-3h, then in 75-85 DEG C of decocting in water 20-40min, is cooled to room temperature, normal temperature drying 2-4d after taking-up
Obtain modified polypropylene fiber.
The modified concrete with excellent performance of resisting cracking the most according to claim 1 and 2, it is characterised in that modified poly-third
In the preparation technology of alkene fiber, the mass fraction of silane coupler is 18-22%, and the mass fraction of tert-butyl hydroperoxide is
0.4-0.6%.
4. according to the modified concrete with excellent performance of resisting cracking described in any one of claim 1-3, it is characterised in that modified
In the preparation technology of polypropylene fibre, silane coupler is silane coupling A-171, silane coupling A-174, silane coupler
One or more compositionss in A-1100 and silane coupling A-1120.
5. according to the modified concrete with excellent performance of resisting cracking described in any one of claim 1-4, it is characterised in that modified
In the preparation technology of polypropylene fibre, the weight ratio of polypropylene fibre, silane coupler and tert-butyl hydroperoxide is 2-8:1-
4:3-5.
6. according to the modified concrete with excellent performance of resisting cracking described in any one of claim 1-5, it is characterised in that polyene
Hydrocarbon fiber is undaform, a diameter of 0.77mm, a length of 50mm, and draw ratio is 65, tensile strength >=600N/mm2。
7. according to the modified concrete with excellent performance of resisting cracking described in any one of claim 1-6, it is characterised in that steel is fine
A diameter of 0.9mm, a length of 60mm of dimension, draw ratio is 67, tensile strength >=1100N/mm2。
8. according to the modified concrete with excellent performance of resisting cracking described in any one of claim 1-7, it is characterised in that river sand
Modulus of fineness 2.8-3.2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610596599.9A CN106220094A (en) | 2016-07-26 | 2016-07-26 | A kind of modified concrete with excellent performance of resisting cracking |
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| CN201610596599.9A CN106220094A (en) | 2016-07-26 | 2016-07-26 | A kind of modified concrete with excellent performance of resisting cracking |
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Cited By (7)
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| CN107399944A (en) * | 2017-07-03 | 2017-11-28 | 佛山科学技术学院 | A kind of flexible material modified portland cement encapsulates composite |
| CN107602145A (en) * | 2017-09-13 | 2018-01-19 | 无锡市交通工程有限公司 | A kind of high-ductility concrete and the concrete road surface using its cast |
| CN107721315A (en) * | 2017-11-13 | 2018-02-23 | 蒋艳玲 | A kind of Reinforced Concrete Materials |
| CN107805011A (en) * | 2017-11-21 | 2018-03-16 | 临沂大学 | A kind of rubber and plastic concrete and preparation method thereof |
| CN111302722A (en) * | 2018-12-11 | 2020-06-19 | 北京海普斯建材有限公司 | Polymer anti-crack mortar |
| CN112279578A (en) * | 2020-11-26 | 2021-01-29 | 杭州易佰新材料科技有限公司 | Crack-resistant reinforced concrete for building and preparation method thereof |
| CN117263614A (en) * | 2023-09-26 | 2023-12-22 | 广西四维材料科技股份有限公司 | Color dry-mixed fine sand concrete and construction method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107399944A (en) * | 2017-07-03 | 2017-11-28 | 佛山科学技术学院 | A kind of flexible material modified portland cement encapsulates composite |
| CN107399944B (en) * | 2017-07-03 | 2019-12-03 | 佛山科学技术学院 | A kind of flexible material modified portland cement encapsulation composite material |
| CN107602145A (en) * | 2017-09-13 | 2018-01-19 | 无锡市交通工程有限公司 | A kind of high-ductility concrete and the concrete road surface using its cast |
| CN107721315A (en) * | 2017-11-13 | 2018-02-23 | 蒋艳玲 | A kind of Reinforced Concrete Materials |
| CN107805011A (en) * | 2017-11-21 | 2018-03-16 | 临沂大学 | A kind of rubber and plastic concrete and preparation method thereof |
| CN111302722A (en) * | 2018-12-11 | 2020-06-19 | 北京海普斯建材有限公司 | Polymer anti-crack mortar |
| CN112279578A (en) * | 2020-11-26 | 2021-01-29 | 杭州易佰新材料科技有限公司 | Crack-resistant reinforced concrete for building and preparation method thereof |
| CN117263614A (en) * | 2023-09-26 | 2023-12-22 | 广西四维材料科技股份有限公司 | Color dry-mixed fine sand concrete and construction method thereof |
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Application publication date: 20161214 |