CN103274653A - High-flexibility and low-shrinkage fiber reinforced cement-based composite material - Google Patents
High-flexibility and low-shrinkage fiber reinforced cement-based composite material Download PDFInfo
- Publication number
- CN103274653A CN103274653A CN2013101690936A CN201310169093A CN103274653A CN 103274653 A CN103274653 A CN 103274653A CN 2013101690936 A CN2013101690936 A CN 2013101690936A CN 201310169093 A CN201310169093 A CN 201310169093A CN 103274653 A CN103274653 A CN 103274653A
- Authority
- CN
- China
- Prior art keywords
- cement
- agent
- fiber
- water
- gypsum
- 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.)
- Granted
Links
Abstract
The invention belongs to the technical field of building materials, and in particular relates to a high-flexibility and low-shrinkage fiber reinforced cement-based composite material. The composite material is prepared by mixing cement, coal ash, silicon powder, gypsum, an expanding agent, a water reducing agent, a shrinkage reducing agent, a defoaming agent, a thickening agent, fine sand, fibers and water, wherein the total mass percentage of the cement, the coal ash, the silicon powder, the gypsum, the expanding agent, the water reducing agent, the shrinkage reducing agent, the defoaming agent, the thickening agent, the fine sand and the fibers is 77-85 percent, and the mass percentage of the water is 15-23 percent. The fiber reinforced cement-based composite material has the performance characteristics of low shrinkage, high flexibility, small crack width, quickness in condensation and early strength and is high in compressive strength and good in synergism with other materials.
Description
Technical field
The invention belongs to building material technical field, particularly the low drying shrinkage fiber reinforced cement-based composite material of a kind of high tenacity.
Background technology
Concrete is a kind of typical hard brittle material, and its bearing capacity after load-bearing reaches the peak value load sharply descends, and the concentrated incipient crack cracks that occurs in of distortion.Therefore the normal concrete works surpasses concrete tensile strength at stress and namely occurs crackle later on.Be balancing machine, the required distortion of environmental load, the crackle width will extend to macroscopical visible horizon.Cracking not only reduces the bearing capacity of works, and makes moisture directly contact reinforcing bar with harmful chemical pierce through the protection layer, finally causes the reduction of works weather resistance.
Solve concrete long-term durable problem, in the anti-permeability performance under improving the non-cracking state of concrete material, also want the fracture width after control texture ftractures under complex environment.Disclose one piece of academic paper that is called " From micromechanics to structural engineering-the design of cementitious composites for civil engineering application " of being delivered by Victor C.Li among the Journal of JSCE of 1993 the 10th the 2nd phases of volume, it has explained a kind of high-tenacity fiber refinforced cement based composites through the mesomechanics design.This material macroscopic view limit tensile strain can reach 3%～5%, and its mechanism is for forming many tiny cracks (single crackle width is about 80 μ m, about crack spacing 10mm) in material tension process.The characteristics of macroscopic view tensile stress-strain stress relation do not reduce the strain hardening phenomenon of namely saying usually for the increase tensile stress with stretching strain.The formation of many microcracks makes macroscopical stretching strain of material increase over one hundred times in the drawing process.Because the bridge joint effect of fiber between crackle, the transmission force property of material monolithic are not weakened because of the formation of hair line.Because good stress-strain property and control of crack width function, this material application of future in civil engineering work has caused the extensive concern of Chinese scholars.
High ductility fiber reinforced cement-based composite material exists big defective, i.e. its base material dry shrinkage excessive (drying shrinkage reached 1500～2000 microstrains in 28 days).Although cracking back crackle width is under control, because the material drying shrinkage is excessive, its cracking risk increases, and with the obvious variation of the collaborative work of other material (normal concrete 28 the Heavenly Stems shrinkage strain is usually in 400～800 microstrains).
Summary of the invention
At the prior art deficiency, the invention provides the low drying shrinkage fiber reinforced cement-based composite material of a kind of high tenacity.
A kind of high tenacity is hanged down the drying shrinkage fiber reinforced cement-based composite material, this matrix material is mixed by cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand, fiber and water, wherein the shared total mass per-cent of cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand and fiber is 77%～85%, and it is 15%～23% that water accounts for mass percent.
The concrete mass percent of described cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand and fiber is as follows:
Cement 20%～26%;
Flyash 6.6%～8.7%;
Silica flour 1.7%～2.2%;
Gypsum 1.7%～2.2%;
Swelling agent 3.3%～4.3%;
Water reducer 0.3%～0.7%;
Economization agent 0.7%～0.9%;
Defoamer 0.06%～0.08%;
Thickening material 0.010%～0.014%;
Fine sand 33%～48%;
Fiber 0.8%～1.0%.
Described cement is that strength grade is 42.5 grades aluminosulfate cement.
Described flyash is the low calcium fly ash of one-level.
The unformed SiO of described silica flour
2Content is greater than 90%.
Described gypsum is high-strength building gypsum plaster.
Described swelling agent is commercially available sulplo-aluminate class cement expansive material; Described economization agent is commercially available economization agent for concrete; Described defoamer is commercially available concrete defoamer; Described thickening material is commercially available concrete water-retaining admixture.
Described thickening material is methyl cellulose ether or hydroxypropyl methyl cellulose ether.
Described water reducer is polycarboxylic acids dehydragent or naphthalene system-sulfamate composite water-reducing agent.
Described fine sand is 100～200 order quartz sands.
Described fiber is polyvinyl alcohol fiber, and described staple length is 12mm, and Fibre diameter is 39 μ m.
Beneficial effect of the present invention is:
Fiber reinforced cement-based composite material of the present invention has that drying shrinkage is low, toughness is high, the crackle width is little, the performance characteristics of quick setting early strength, also have simultaneously high compression strength, with the good collaborative work of other materials, be specially:
1. hang down drying shrinkage
For reaching the low drying shrinkage of high-tenacity fiber refinforced cement sill, in raw material, add swelling agent.Its mechanism is: when the premature cure process of cement, the swelling agent of adding and the reaction of the hydrated product of cement generate the ettringite with microdilatancy usefulness, and base material (mortar) appropriateness of high tenacity material is expanded, and compensate all kinds of shrinkage strains.
Test shows that the cement-base composite material after handling through material compensation is compared with traditional high-tenacity fiber refinforced cement based composites, and the shrinkage value of 28d is reduced to 200 microstrains by 1500 microstrains, has reduced by 87%.And shrinkage value is lower than normal concrete, means that the low drying shrinkage fiber reinforced cement-based composite material of high tenacity can not ftracture yet in the indehiscent structure of normal concrete, greatly reduces the cracking risk of traditional high-tenacity fiber refinforced cement sill.
2. high tenacity
For realizing the high tenacity of material, fiber, base material (mortar) and fiber-substrate interface characteristic must be via rational mesomechanics designs.Young's modulus and the base material of the polyvinyl alcohol fiber that the present invention selects for use is suitable, intensity is higher, good with the adhesive property of base material.Recently realize the matched well of substrate performance (intensity, fracture toughness property etc.) and this kind fiber by adjusting glue.The cement-based material of designing so also can be realized high tenacity, microcrack width except having low drying shrinkage.
This material macroscopic view limit tensile strain can reach 3%-5%, and its mechanism is for forming many tiny cracks (single crackle width is about 80 μ m, about crack spacing 10mm) in material tension process.The characteristics of macroscopic view tensile stress-strain stress relation do not reduce the strain hardening phenomenon of namely saying usually for the increase tensile stress with stretching strain.The formation of many microcracks makes macroscopical stretching strain of material increase over one hundred times in the drawing process.Because the bridge joint effect of fiber between crackle, the transmission force property of material monolithic are not weakened because of the formation of hair line.
3. good compressive property
As a kind of Structural Engineering material, the low drying shrinkage fiber reinforced cement-based composite material of the high tenacity that the present invention relates to also should have the good pressure resistance energy except the characteristic with high tenacity, low drying shrinkage.Owing to select for use sand-cement slurry as the base material of material, fiber is to the bridge joint effect of primary crackle, running crack in addition, and this material can obtain the good pressure resistance energy.By adjusting water-cement ratio, the 28d ultimate compression strength of material can reach 20～30MPa, and corresponding limit resistance to compression strain can reach more than 0.3%.
Embodiment
The invention provides the low drying shrinkage fiber reinforced cement-based composite material of a kind of high tenacity, the present invention will be further described below in conjunction with embodiment.
Embodiment 1
A kind of high tenacity is hanged down the drying shrinkage fiber reinforced cement-based composite material, it is mixed by cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand, fiber and water, wherein the shared total mass per-cent of cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand and fiber is 80.5%, and it is 19.5% that water accounts for mass percent.
Cement is the quick hardening sulphoaluminate cement of 42.5 grades of strength grades; Flyash is the low calcium fly ash of one-level; The SILICA FUME that the Gansu three silicon materials company limiteds far away of silica flour produce; Gypsum is high-strength building gypsum plaster; Swelling agent is commercially available ZY expansion agent for composite type concrete; Water reducer is high-efficiency water-reducing agent of poly-carboxylic acid; Economization agent is commercially available economization agent for concrete; The Lumiten EL type defoamer that defoamer is produced for Shanghai BASF Auxiliary Chemicals Co., Ltd.; Thickening material is commercially available concrete water-retaining admixture, and its component is hydroxypropyl methyl cellulose ether; Fine sand is 100～200 order quartz sands; Fiber is the polyvinyl alcohol fiber that Japanese Kuraray company produces.The mass percent of above-mentioned each component is as follows:
Quick hardening sulphoaluminate cement 26%; Flyash 8.7%; Silica flour 2.2%; Terra alba 2.2%; Swelling agent 4.3%; High-efficiency water-reducing agent of poly-carboxylic acid 0.4%; Economization agent 0.87%; Defoamer 0.08%; Water-retaining admixture 0.01%; 100～200 order quartz sands 35%; Polyvinyl alcohol fiber 1%.
The preparation of the low drying shrinkage fiber reinforced cement-based composite material of above-mentioned a kind of high tenacity: cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand, fiber and water are mixed stirring, get product.
Present embodiment obtains the test-results of every performance of product and lists in table 1.Wherein, the used test block of mechanical test is put into standard curing room and is carried out water curing (temperature is 20 ± 2 ℃) after the demoulding in 24 hours, carries out tension, compression tests at the mechanical test machine after 28 days; The drying shrinkage test adopts the cement mortar expansion gauge to carry out, and form removal after 24 hours is placed in test block under standard test condition, measure its shrinkage value under each length of time then.
Table 1 embodiment 1 high tenacity is hanged down drying shrinkage fiber reinforced cement-based composite material table with test results (28 days)
| Tensile strength/MPa | 4.84 |
| Ultimate tensile strength/% | 1.49 |
| Ultimate compression strength/MPa | 27.54 |
| Limit compressive strain/% | 0.55 |
| Shrinkage value/μ ε | 109 |
Embodiment 2
A kind of high tenacity is hanged down the drying shrinkage fiber reinforced cement-based composite material, it is mixed by cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand, fiber and water, wherein the shared mass percent of cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand and fiber is 79%, and it is 21% that water accounts for mass percent.
Cement is the quick hardening sulphoaluminate cement of 42.5 grades of strength grades; Flyash is the low calcium fly ash of one-level; The SILICA FUME that the Gansu three silicon materials company limiteds far away of silica flour produce; Gypsum is high-strength building gypsum plaster; Swelling agent is commercially available ZY expansion agent for composite type concrete; Water reducer is naphthalene system-sulfamate composite superplasticizer; Economization agent is commercially available economization agent for concrete; The Lumiten EL type defoamer that defoamer is produced for Shanghai BASF Auxiliary Chemicals Co., Ltd.; Thickening material is commercially available concrete water-retaining admixture, and its component is hydroxypropyl methyl cellulose ether; Fine sand is 100～200 order quartz sands; Fiber is the polyvinyl alcohol fiber that Japanese Kuraray company produces.The mass percent of above-mentioned each component is as follows:
Quick hardening sulphoaluminate cement 25.5%; Flyash 8.55%; Silica flour 2.2%; Terra alba 2.2%; Swelling agent 4.2%; High-efficiency water-reducing agent of poly-carboxylic acid 0.4%; Economization agent 0.85%; Defoamer 0.08%; Water-retaining admixture 0.02%; 100～200 order quartz sands 34%; Polyvinyl alcohol fiber 1%.
The preparation of the low drying shrinkage fiber reinforced cement-based composite material of above-mentioned a kind of high tenacity: cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand, fiber and water are mixed stirring, get product.
Present embodiment obtains the test-results of every performance of product and lists in table 2.Wherein, the used test block of mechanical test is put into standard curing room and is carried out water curing (temperature is 20 ± 2 ℃) after the demoulding in 24 hours, carries out tension, compression tests at the mechanical test machine after 28 days; The drying shrinkage test adopts the cement mortar expansion gauge to carry out, and form removal after 24 hours is placed in test block under standard test condition, measure its shrinkage value under each length of time then.
Table 2 embodiment 2 high tenacity are hanged down drying shrinkage fiber reinforced cement-based composite material test result (28 days)
| Tensile strength/MPa | 4.03 |
| Ultimate tensile strength/% | 1.24 |
| Ultimate compression strength/MPa | 20.94 |
| Limit compressive strain/% | 0.45 |
| Shrinkage value/μ ε | 202 |
Claims (10)
1. a high tenacity is hanged down the drying shrinkage fiber reinforced cement-based composite material, it is characterized in that: this matrix material is mixed by cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand, fiber and water, wherein the shared total mass per-cent of cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand and fiber is 77%～85%, and it is 15%～23% that water accounts for mass percent.
The concrete mass percent of described cement, flyash, silica flour, gypsum, swelling agent, water reducer, economization agent, defoamer, thickening material, fine sand and fiber is as follows:
Cement 20%～26%;
Flyash 6.6%～8.7%;
Silica flour 1.7%～2.2%;
Gypsum 1.7%～2.2%;
Swelling agent 3.3%～4.3%;
Water reducer 0.3%～0.7%;
Economization agent 0.7%～0.9%;
Defoamer 0.06%～0.08%;
Thickening material 0.010%～0.014%;
Fine sand 33%～48%;
Fiber 0.8%～1.0%.
2. matrix material according to claim 1, it is characterized in that: described cement is that strength grade is 42.5 grades aluminosulfate cement.
3. matrix material according to claim 1 is characterized in that: described flyash is the low calcium fly ash of one-level.
4. matrix material according to claim 1 is characterized in that: the unformed SiO of described silica flour
2Content is greater than 90%.
5. matrix material according to claim 1, it is characterized in that: described gypsum is high-strength building gypsum plaster.
6. matrix material according to claim 1, it is characterized in that: described swelling agent is commercially available sulplo-aluminate class cement expansive material; Described economization agent is commercially available economization agent for concrete; Described defoamer is commercially available concrete defoamer; Described thickening material is commercially available concrete water-retaining admixture.
7. matrix material according to claim 6, it is characterized in that: described thickening material is methyl cellulose ether or hydroxypropyl methyl cellulose ether.
8. matrix material according to claim 1, it is characterized in that: described water reducer is polycarboxylic acids dehydragent or naphthalene system-sulfamate composite water-reducing agent.
9. matrix material according to claim 1, it is characterized in that: described fine sand is 100～200 order quartz sands.
10. matrix material according to claim 1, it is characterized in that: described fiber is polyvinyl alcohol fiber, and described staple length is 12mm, and Fibre diameter is 39 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169093.6A CN103274653B (en) | 2013-05-09 | 2013-05-09 | High-flexibility and low-shrinkage fiber reinforced cement-based composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169093.6A CN103274653B (en) | 2013-05-09 | 2013-05-09 | High-flexibility and low-shrinkage fiber reinforced cement-based composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103274653A true CN103274653A (en) | 2013-09-04 |
| CN103274653B CN103274653B (en) | 2014-12-24 |
Family
ID=49057313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310169093.6A Active CN103274653B (en) | 2013-05-09 | 2013-05-09 | High-flexibility and low-shrinkage fiber reinforced cement-based composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103274653B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211358A (en) * | 2014-09-11 | 2014-12-17 | 中国中材国际工程股份有限公司 | Rapid-hardening early strength high-ductility cement-based composite material and preparation method thereof |
| CN104446250A (en) * | 2014-11-27 | 2015-03-25 | 太仓顺如成建筑材料有限公司 | High-toughness building material |
| CN104876498A (en) * | 2015-04-08 | 2015-09-02 | 重庆千向建材有限公司 | Light-weight energy-saving partition wall slat and manufacturing method thereof |
| CN105060779A (en) * | 2015-07-23 | 2015-11-18 | 南京林业大学 | Fiber reinforced cement based composite material for reinforcing reinforced concrete structure |
| CN105906261A (en) * | 2016-04-15 | 2016-08-31 | 北京建筑大学 | PVA fiber reinforced cement-based composite material |
| CN106116385A (en) * | 2016-06-28 | 2016-11-16 | 蚌埠市方阵商品混凝土有限公司 | A kind of strong concrete |
| CN106517961A (en) * | 2016-11-24 | 2017-03-22 | 河北工业大学 | High-toughness cement-based composite material with low drying shrinkage, and preparation method thereof |
| CN106810154A (en) * | 2017-01-12 | 2017-06-09 | 上海理工大学 | Mix superhigh tenacity cement-base composite material of PVA fibers and preparation method thereof |
| CN107298560A (en) * | 2017-06-25 | 2017-10-27 | 长沙善道新材料科技有限公司 | A kind of anti-permeation cracking-resistant concrete |
| CN108726930A (en) * | 2018-05-28 | 2018-11-02 | 郑州大学 | A kind of engineering repair materials and preparation method thereof of lower shrinkage, high ductility |
| CN109111149A (en) * | 2018-10-18 | 2019-01-01 | 宁波新盛建材开发有限公司 | A kind of fiber reducing and anti-cracking agent and preparation method thereof |
| CN110409769A (en) * | 2019-08-13 | 2019-11-05 | 南通装配式建筑与智能结构研究院 | A kind of fast gravity die high intensity heavy Machine-blasting mortar construction of long-distance sand transport |
| CN111116149A (en) * | 2019-12-25 | 2020-05-08 | 中国京冶工程技术有限公司 | High-strength fiber-reinforced cement-based composite material and preparation method and application thereof |
| CN113845347A (en) * | 2021-10-28 | 2021-12-28 | 重庆伍圣建材有限公司 | High-strength high-toughness composite compact cementing material |
| CN114349430A (en) * | 2022-01-19 | 2022-04-15 | 内蒙古工业大学 | Environment-friendly micro-expansion high-ductility cement-based composite material and preparation method thereof |
| CN115057670A (en) * | 2022-03-30 | 2022-09-16 | 上海二十冶建设有限公司 | Fast-hardening high-ductility inorganic sealing mortar |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07232955A (en) * | 1993-12-28 | 1995-09-05 | Chichibu Onoda Cement Corp | Production of concrete composition and concrete |
| CN1844026A (en) * | 2006-04-21 | 2006-10-11 | 华南理工大学 | A novel masonry cement |
| CN101182139A (en) * | 2007-11-12 | 2008-05-21 | 华南理工大学 | Masonry cement having higher strength and water retention |
| CN101244922A (en) * | 2008-03-25 | 2008-08-20 | 万宇 | Impact resistant high-efficiency wear-resistant material |
| CN101665342A (en) * | 2009-09-18 | 2010-03-10 | 徐世烺 | High-tenacity crack-control impervious fiber concrete |
| CN102249641A (en) * | 2010-10-09 | 2011-11-23 | 唐山北极熊建材有限公司 | Self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover, and insulated wallboard |
| CN102964100A (en) * | 2012-11-13 | 2013-03-13 | 福州皇家地坪有限公司 | Macromolecular adhesive cement |
-
2013
- 2013-05-09 CN CN201310169093.6A patent/CN103274653B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07232955A (en) * | 1993-12-28 | 1995-09-05 | Chichibu Onoda Cement Corp | Production of concrete composition and concrete |
| CN1844026A (en) * | 2006-04-21 | 2006-10-11 | 华南理工大学 | A novel masonry cement |
| CN101182139A (en) * | 2007-11-12 | 2008-05-21 | 华南理工大学 | Masonry cement having higher strength and water retention |
| CN101244922A (en) * | 2008-03-25 | 2008-08-20 | 万宇 | Impact resistant high-efficiency wear-resistant material |
| CN101665342A (en) * | 2009-09-18 | 2010-03-10 | 徐世烺 | High-tenacity crack-control impervious fiber concrete |
| CN102249641A (en) * | 2010-10-09 | 2011-11-23 | 唐山北极熊建材有限公司 | Self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover, and insulated wallboard |
| CN102964100A (en) * | 2012-11-13 | 2013-03-13 | 福州皇家地坪有限公司 | Macromolecular adhesive cement |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104211358A (en) * | 2014-09-11 | 2014-12-17 | 中国中材国际工程股份有限公司 | Rapid-hardening early strength high-ductility cement-based composite material and preparation method thereof |
| CN104211358B (en) * | 2014-09-11 | 2016-06-22 | 中国中材国际工程股份有限公司 | A kind of high-early-strength high ductility cement-base composite material and preparation method thereof |
| CN104446250A (en) * | 2014-11-27 | 2015-03-25 | 太仓顺如成建筑材料有限公司 | High-toughness building material |
| CN104876498A (en) * | 2015-04-08 | 2015-09-02 | 重庆千向建材有限公司 | Light-weight energy-saving partition wall slat and manufacturing method thereof |
| CN105060779A (en) * | 2015-07-23 | 2015-11-18 | 南京林业大学 | Fiber reinforced cement based composite material for reinforcing reinforced concrete structure |
| CN105906261A (en) * | 2016-04-15 | 2016-08-31 | 北京建筑大学 | PVA fiber reinforced cement-based composite material |
| CN106116385A (en) * | 2016-06-28 | 2016-11-16 | 蚌埠市方阵商品混凝土有限公司 | A kind of strong concrete |
| CN106517961B (en) * | 2016-11-24 | 2019-02-19 | 河北工业大学 | A kind of high tenacity cement-base composite material and preparation method thereof with low Investigation of drying shrinkage of high |
| CN106517961A (en) * | 2016-11-24 | 2017-03-22 | 河北工业大学 | High-toughness cement-based composite material with low drying shrinkage, and preparation method thereof |
| CN106810154A (en) * | 2017-01-12 | 2017-06-09 | 上海理工大学 | Mix superhigh tenacity cement-base composite material of PVA fibers and preparation method thereof |
| CN107298560A (en) * | 2017-06-25 | 2017-10-27 | 长沙善道新材料科技有限公司 | A kind of anti-permeation cracking-resistant concrete |
| CN108726930A (en) * | 2018-05-28 | 2018-11-02 | 郑州大学 | A kind of engineering repair materials and preparation method thereof of lower shrinkage, high ductility |
| CN109111149A (en) * | 2018-10-18 | 2019-01-01 | 宁波新盛建材开发有限公司 | A kind of fiber reducing and anti-cracking agent and preparation method thereof |
| CN110409769A (en) * | 2019-08-13 | 2019-11-05 | 南通装配式建筑与智能结构研究院 | A kind of fast gravity die high intensity heavy Machine-blasting mortar construction of long-distance sand transport |
| CN111116149A (en) * | 2019-12-25 | 2020-05-08 | 中国京冶工程技术有限公司 | High-strength fiber-reinforced cement-based composite material and preparation method and application thereof |
| CN113845347A (en) * | 2021-10-28 | 2021-12-28 | 重庆伍圣建材有限公司 | High-strength high-toughness composite compact cementing material |
| CN114349430A (en) * | 2022-01-19 | 2022-04-15 | 内蒙古工业大学 | Environment-friendly micro-expansion high-ductility cement-based composite material and preparation method thereof |
| CN115057670A (en) * | 2022-03-30 | 2022-09-16 | 上海二十冶建设有限公司 | Fast-hardening high-ductility inorganic sealing mortar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103274653B (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103274653B (en) | High-flexibility and low-shrinkage fiber reinforced cement-based composite material | |
| CN107445545B (en) | High-ductility cement-based composite material for repairing hydraulic concrete structure | |
| CN104030642B (en) | A kind of fibrous concrete | |
| CN103332909A (en) | High-ductility repair dry powder mortar and preparation method thereof | |
| CN107488018A (en) | A kind of sulphoaluminate cement base superelevation ductility concrete and preparation method thereof | |
| CN101723620A (en) | Polyvinyl alcohol fiber reinforced cement-based material composition and preparation method and application thereof | |
| CN102643059B (en) | Bonding treating agent for concrete inorganic interface | |
| Jun et al. | Experimental research on mechanical and working properties of non-dipping chopped basalt fiber reinforced concrete | |
| CN107500646A (en) | A kind of Ultralight superelevation ductility concrete and preparation method thereof | |
| CN111807790B (en) | Rubber powder ultrahigh-ductility mortar for building 3D printing and preparation | |
| CN103214218B (en) | Highly fracture-resistant and highly compression-resistant cement-based mortar material and preparation method thereof | |
| CN110105011A (en) | A kind of microlith aggregate concrete with the high ductility of lower shrinkage | |
| CN102910884B (en) | Concrete composition and preparation method thereof | |
| CN109824326B (en) | Steel fiber modified PVA fiber reinforced cement-based composite material and preparation method thereof | |
| CN112341076A (en) | Fair-faced concrete and preparation method thereof | |
| CN111892362A (en) | Building mortar and preparation method thereof | |
| CN115057670A (en) | Fast-hardening high-ductility inorganic sealing mortar | |
| CN113387656A (en) | High-strength double-component anti-crack repair mortar and preparation method thereof | |
| CN113045273A (en) | High-strength polyvinyl alcohol fiber reinforced cement-based composite material and preparation method and application thereof | |
| CN102276200A (en) | Method for manufacturing waste textile fiber masonry mortar | |
| CN112521082A (en) | Method for preparing ECC (error correction code) by adopting recycled glass as auxiliary cementing material | |
| CN110304883A (en) | A kind of protofibre cement-base composite material and preparation method thereof | |
| Nurwidayati et al. | Bond behaviour between reinforcing bars and geopolymer concrete by using pull-out test | |
| CN110092622A (en) | A kind of green cement based composites of the high ductility of lower shrinkage | |
| KR102423871B1 (en) | Crack resisting hybrid fiber-reinforced cementitious mortar composition having excellent repairing method using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |