CN110981404B - Ultra-high-ductility cement-based material for repairing and reinforcing - Google Patents
Ultra-high-ductility cement-based material for repairing and reinforcing Download PDFInfo
- Publication number
- CN110981404B CN110981404B CN201911203227.5A CN201911203227A CN110981404B CN 110981404 B CN110981404 B CN 110981404B CN 201911203227 A CN201911203227 A CN 201911203227A CN 110981404 B CN110981404 B CN 110981404B
- Authority
- CN
- China
- Prior art keywords
- parts
- based material
- cement
- slag
- repairing
- 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.)
- Active
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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
-
- 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
Abstract
The invention relates to the technical field of building materials, and discloses an ultrahigh-ductility cement-based material for repairing and reinforcing, which comprises the following components in parts by mass: 300-600 parts of a cementing material; 700-1400 parts of aggregate; 100-300 parts of water; 2-10 parts of nano particles; 1-10 parts of microcapsules; 1-20 parts of PVA and/or PE fibers; 10-30 parts of titanium white slag; auxiliary agent solution: 30-60 parts; 10-50 parts of emulsion; 10-50 parts of light-burned ferronickel slag; the microcapsule core material is a mixture of starch glue, silica sol, a silane coupling agent and water, and the mass ratio of the microcapsule core material to the water is 10-40: 10-40: 5-15: 10 to 50. The invention has controllable setting time, high ductility and strong durability for repairing and reinforcing the ultrahigh ductility cement-based material, and solves the problems of poor ductility and uncontrollable setting time of the common repairing and reinforcing cement-based material.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an ultrahigh-ductility cement-based material for repairing and reinforcing.
Background
The cement-based materials for repairing and reinforcing bridges, roads, buildings and the like generally require fast setting early strength, higher breaking strength and higher ductility, and have lower requirement on the strength against pressure. The quick-hardening early strength is easy to achieve for cement-based materials, but the high breaking resistance and the high ductility are a bottleneck difficult to break through for concrete materials. The concrete material is a multiphase and heterogeneous material, and the flexural strength of the concrete material is very low and is only about 1/10 of the compressive strength of the concrete material, so that the application of the concrete material is limited.
In the present stage, in order to improve the fracture resistance and deformation (ductility) capability of repairing and reinforcing the cement-based material, the main adopted technology is as follows: 1) and adhering fiber cloth on the outer layer of the cement-based material. The technology affects the appearance of the building and is not easy to be secondarily decorated; 2) the random short fibers, the reinforcing steel bars and the like are added into the concrete, so that the ultimate tensile strain of the concrete reaches 3% -7%, but the fibers, the reinforcing steel bars and the like are less affected on the ductility of a concrete matrix, and when the fibers are doped more, the fibers are not uniformly dispersed and are easy to agglomerate, so that the performance of the concrete is reduced.
In order to make the concrete matrix have higher ductility, the main technology at present is to modify the concrete by using a polymer emulsion, but when the polymer is added in a large amount, the contact between cement and water is hindered, the hydration of the cement is delayed, and the setting of the cement is influenced. In order to recover the use as soon as possible, the time requirements of repair and reinforcement projects are very high. Therefore, the invention provides a method.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides an ultra-high ductility cement-based material for repairing and reinforcing, which has controllable setting time, high ductility and strong durability and solves the problems of poor ductility and uncontrollable setting time of the common repairing and reinforcing cement-based material.
The technical scheme is as follows: the invention provides an ultrahigh-ductility cement-based material for repairing and reinforcing, which comprises the following components in parts by mass: 300-600 parts of a cementing material; 700-1400 parts of aggregate; 100-300 parts of water; 2-10 parts of nano particles; 1-10 parts of microcapsules; 1-20 parts of PVA and/or PE fibers; 10-30 parts of titanium white slag; auxiliary agent solution: 30-60 parts; 10-50 parts of emulsion; 10-50 parts of light-burned ferronickel slag; the microcapsule core material is a mixture of starch glue, silica sol, a silane coupling agent and water, and the mass ratio of the microcapsule core material to the water is 10-40: 10-40: 5-15: 10 to 50.
Preferably, the nano particles are nano titanium dioxide and/or nano aluminum oxide.
Preferably, the gelling material is any one or combination of the following: cement, mineral powder, steel slag powder, lithium slag powder and zeolite powder.
Preferably, the aggregate is any one or combination of the following: natural sandstone, artificial sandstone and regenerated metallurgical slag sand.
Preferably, the aggregate has a particle size of less than 1.25mm and a crush value of less than 8%.
Preferably, the adjuvant solution is any one or combination of the following: R-Na solution, wherein R is hydroxide, nitrate, carbonate, sulfate, silicate, acetate or formate.
Preferably, the emulsion is a glycerol-modified acrylic emulsion.
Preferably, the calcination temperature of the light-burned ferronickel slag is 500-900 ℃.
Has the advantages that: the invention has the following advantages:
1. the microcapsule of the invention can firstly play a role of fiber and can enhance the toughness of a cement-based material, and secondly, the capsule core material of the microcapsule adopts a mixture of starch glue, silica sol, a silane coupling agent and water, and the mass ratio is 10-40: 10-40: 5-15: 10 to 50; once the concrete cracks, the microcapsules are broken, capsule core materials in the microcapsules overflow, starch glue, silica sol, silane coupling agents and the like can react with hydration products such as calcium hydroxide and the like in the broken surface of the cement-based material to form new hydration products such as C-S-H gel and the like to be filled in the cracks, and the starch glue, the silica sol and the silane coupling agents can play a role in gluing and are coupled with chemical bonds of the broken surface of the cement-based material, so that the effect of repairing the cracks of the cement-based material is continuously played.
2. The nano material, the emulsion and the like are combined with corresponding chemical bonds of cement hydration products, so that the bonding strength of the material interface can be improved, and the breaking strength of the material is improved; the nano material has fine particles, can play a role of a crystal nucleus in the hydration process of the cement-based material, can promote the hydration of the cement-based material, and can fill micro pores among hydration products of the cement-based material.
3. The existence of calcium sulfate and other components in the titanium dioxide slag dilutes the components of the cement-based material, and the excitation effect of the auxiliary agent solution ensures that the setting time of the invention is adjustable.
4. The use of PVA and/or PE fibers can effectively improve the ductility of the cement-based material, and the activity of MgO and the like in the nickel-iron slag is improved by light burning, so that the nickel-iron slag plays a role of an expanding agent in the cement-based material, and the cracking risk of the ultra-high ductility cement-based material is reduced.
5. The invention has wide material selection and can use local materials.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The present invention will be described in detail with reference to specific examples.
Example 1:
the embodiment provides an ultrahigh-ductility cement-based material for repairing and reinforcing, which comprises the following components in parts by mass: 200 parts of cement, 200 parts of mineral powder, 100 parts of steel slag powder, 50 parts of lithium slag powder, 50 parts of zeolite powder, 1400 parts of natural sand with the particle size of less than 1.25mm and the crushing value of less than 8%, 100 parts of water, 10 parts of nano titanium dioxide, 10 parts of microcapsules (the capsule core material of the microcapsules consists of 20 parts of starch glue, 30 parts of silica sol, 10 parts of silane coupling agent and 40 parts of water), 20 parts of PVA fiber, 30 parts of titanium white slag, 60 parts of auxiliary agent solution consisting of sodium hydroxide and sodium silicate solution (the ratio of the sodium hydroxide to the sodium silicate solution is 4: 6), 10 parts of glycerol modified pure acrylic emulsion and 50 parts of 500 ℃ light-fired nickel-iron slag.
Example 2:
the embodiment provides an ultrahigh-ductility cement-based material for repairing and reinforcing, which comprises the following components in parts by mass: 50 parts of cement, 150 parts of mineral powder, 50 parts of steel slag powder, 50 parts of lithium slag powder, 700 parts of quartz sand with the particle size of less than 1.25mm and the crushing value of less than 8%, 600 parts of water, 2 parts of nano aluminum trioxide, 2 parts of microcapsules (the capsule core material of the microcapsules consists of 40 parts of starch glue, 10 parts of silica sol, 15 parts of silane coupling agent and 35 parts of water), 1 part of PE fiber, 10 parts of titanium white slag, 30 parts of auxiliary agent solution consisting of sodium hydroxide and sodium silicate solution (the ratio of the sodium hydroxide to the sodium silicate solution is 3: 7), 50 parts of glycerol modified pure acrylic emulsion and 10 parts of nickel iron slag calcined at 900 ℃.
Example 3:
the embodiment provides an ultrahigh-ductility cement-based material for repairing and reinforcing, which comprises the following components in parts by mass: 400 parts of mineral powder, 100 parts of steel slag powder, 100 parts of lithium slag powder, 1000 parts of regenerated copper slag sand with the particle size of less than 1.00mm and the crushing value of less than 8%, 400 parts of water, 3 parts of nano titanium dioxide, 5 parts of nano aluminum trioxide, 8 parts of microcapsules (capsule core materials of the microcapsules consist of 10 parts of starch glue, 40 parts of silica sol, 5 parts of silane coupling agent and 45 parts of water), 18 parts of PVA fibers, 20 parts of titanium white slag, 50 parts of auxiliary agent solution consisting of sodium hydroxide, sodium carbonate, sodium formate and sodium silicate solution (the ratio of the sodium hydroxide, the sodium carbonate, the sodium formate and the sodium silicate solution is 3:1:1: 5), 40 parts of glycerol modified pure acrylic emulsion and 30 parts of 700 ℃ soft-burned nickel iron slag.
Example 4:
the embodiment provides an ultrahigh-ductility cement-based material for repairing and reinforcing, which comprises the following components in parts by mass: 300 parts of mineral powder, 100 parts of lithium slag powder, 1000 parts of machine-made sand with the particle size of less than 1.25mm and the crushing value of less than 8%, 400 parts of water, 5 parts of nano titanium dioxide, 5 parts of nano aluminum trioxide, 10 parts of microcapsule (the capsule core material of the microcapsule consists of 30 parts of starch glue, 30 parts of silica sol, 5 parts of silane coupling agent and 35 parts of water), 10 parts of PVA, 5 parts of PE fiber, 30 parts of titanium dioxide slag, 50 parts of auxiliary agent solution consisting of sodium hydroxide, sodium sulfate, sodium nitrate and sodium silicate solution (the ratio of the sodium hydroxide, the sodium sulfate, the sodium nitrate and the sodium silicate solution is 5:1:1: 3), 30 parts of glycerol modified pure acrylic emulsion and 30 parts of 800 ℃ soft-burned ferronickel slag.
The performance evaluation indexes of the ultra-high-ductility cement-based material for repairing and reinforcing in the above embodiments are performed with reference to the general concrete mechanical test method (GB/T50081-2002) and the general concrete long-term performance and durability test method standard (GB/T50082-2009).
The main performance indexes of the examples are shown in Table 1.
TABLE 1
As can be seen from Table 1, the coagulation time of the embodiment of the invention is 30-60 minutes, the tensile strain is 4.6-7.4, the 28d chloride ion diffusion resistance coefficient and the freeze-thaw cycle resistance quality loss are both low, and the durability is good.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The ultra-high ductility cement-based material for repairing and reinforcing is characterized by comprising the following components in parts by mass:
300-600 parts of a cementing material;
700-1400 parts of aggregate;
100-300 parts of water;
2-10 parts of nano particles;
1-10 parts of microcapsules;
1-20 parts of PVA and/or PE fibers;
10-30 parts of titanium white slag;
30-60 parts of an auxiliary agent solution;
10-50 parts of emulsion;
10-50 parts of light-burned ferronickel slag;
the microcapsule core material is a mixture of starch glue, silica sol, a silane coupling agent and water, and the mass ratio of the microcapsule core material to the water is 10-40: 10-40: 5-15: 10 to 50;
the nano particles are nano titanium dioxide and/or nano aluminum oxide;
the auxiliary agent solution is any one or combination of the following components:
R-Na solution, wherein R is hydroxide, nitrate, carbonate, sulfate, silicate, acetate or formate;
the emulsion is glycerol modified pure acrylic emulsion.
2. The ultra-high ductility cement-based material for repair reinforcement according to claim 1, wherein the cementitious material is any one or a combination of the following:
cement, mineral powder, steel slag powder, lithium slag powder and zeolite powder.
3. The ultra-high ductility cement-based material for repairing reinforcement according to claim 1, wherein the aggregate is any one or a combination of the following:
natural sandstone, artificial sandstone and regenerated metallurgical slag sand.
4. The ultra-high ductility cement-based material for repair reinforcement as claimed in claim 3, wherein the aggregate has a particle size of less than 1.25mm and a crush value of less than 8%.
5. The ultra-high ductility cement-based material for repair reinforcement according to any one of claims 1 to 4, wherein the calcination temperature of the lightly calcined ferrochrome slag is 500 to 900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203227.5A CN110981404B (en) | 2019-11-29 | 2019-11-29 | Ultra-high-ductility cement-based material for repairing and reinforcing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911203227.5A CN110981404B (en) | 2019-11-29 | 2019-11-29 | Ultra-high-ductility cement-based material for repairing and reinforcing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110981404A CN110981404A (en) | 2020-04-10 |
| CN110981404B true CN110981404B (en) | 2021-11-12 |
Family
ID=70088436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911203227.5A Active CN110981404B (en) | 2019-11-29 | 2019-11-29 | Ultra-high-ductility cement-based material for repairing and reinforcing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110981404B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606599B (en) * | 2020-05-20 | 2022-06-17 | 中铁二局第二工程有限公司 | Polymer modifier for concrete, preparation method and impervious waterproof concrete |
| CN111732358B (en) * | 2020-06-04 | 2022-01-28 | 淮阴工学院 | Lithium slag-based concrete mineral admixture |
| CN112592138B (en) * | 2020-12-31 | 2022-07-12 | 中铁十局集团有限公司 | Single-component active synchronous mortar with controllable setting time and preparation method thereof |
| CN113402234A (en) * | 2021-07-26 | 2021-09-17 | 安徽筑园景新型建材科技有限公司 | Reinforced polymer cement concrete and preparation method thereof |
| CN115636633A (en) * | 2022-09-09 | 2023-01-24 | 山西广同丰新材料有限公司 | Novel inorganic powder material for coal mine reinforcement |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659341A (en) * | 2012-05-17 | 2012-09-12 | 中国水电顾问集团成都勘测设计研究院 | Impact-resistant anti-wear agent for hydraulic concrete |
| CN103664090A (en) * | 2013-12-19 | 2014-03-26 | 中国中材国际工程股份有限公司 | Fiber-hybrid high-ductility cement-based composite material and preparation method thereof |
| CN106478024A (en) * | 2016-10-12 | 2017-03-08 | 北京工业大学 | A kind of high ductility, high-adhesion cement based reinforcing and repairing material and preparation method thereof |
| CN107445545A (en) * | 2017-08-04 | 2017-12-08 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of high ductility cement-base composite material of Hydro-concrete Structures repairing |
| CN108585693A (en) * | 2018-06-20 | 2018-09-28 | 同济大学 | A kind of strong superelevation ductility cement-based material of the superelevation of assorted fibre toughening |
| CN109437747A (en) * | 2018-12-06 | 2019-03-08 | 中交武汉港湾工程设计研究院有限公司 | Concrete structure protection materials |
| CN110498649A (en) * | 2019-09-02 | 2019-11-26 | 东南大学 | A kind of lower shrinkage cement base repair materials and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7169224B2 (en) * | 2004-04-30 | 2007-01-30 | The Regents Of The University Of Michigan | Process for increasing the ductility of high performance fiber-reinforced brittle matrix composites, and composites produced thereby |
-
2019
- 2019-11-29 CN CN201911203227.5A patent/CN110981404B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659341A (en) * | 2012-05-17 | 2012-09-12 | 中国水电顾问集团成都勘测设计研究院 | Impact-resistant anti-wear agent for hydraulic concrete |
| CN103664090A (en) * | 2013-12-19 | 2014-03-26 | 中国中材国际工程股份有限公司 | Fiber-hybrid high-ductility cement-based composite material and preparation method thereof |
| CN106478024A (en) * | 2016-10-12 | 2017-03-08 | 北京工业大学 | A kind of high ductility, high-adhesion cement based reinforcing and repairing material and preparation method thereof |
| CN107445545A (en) * | 2017-08-04 | 2017-12-08 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of high ductility cement-base composite material of Hydro-concrete Structures repairing |
| CN108585693A (en) * | 2018-06-20 | 2018-09-28 | 同济大学 | A kind of strong superelevation ductility cement-based material of the superelevation of assorted fibre toughening |
| CN109437747A (en) * | 2018-12-06 | 2019-03-08 | 中交武汉港湾工程设计研究院有限公司 | Concrete structure protection materials |
| CN110498649A (en) * | 2019-09-02 | 2019-11-26 | 东南大学 | A kind of lower shrinkage cement base repair materials and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110981404A (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110981404B (en) | Ultra-high-ductility cement-based material for repairing and reinforcing | |
| Phoo-Ngernkham et al. | High calcium fly ash geopolymer mortar containing Portland cement for use as repair material | |
| CN104556881B (en) | A kind of superhigh tenacity concrete and preparation method thereof | |
| CN110818366B (en) | Fair-faced concrete and preparation process thereof | |
| CN108585674B (en) | Self-repairing concrete with enhanced repairing performance and preparation method thereof | |
| KR20160144058A (en) | Ultra-high performance concrete for mixing micro basalt fiber and macro steel fiber, and manufacturing method for the same | |
| CN104478324A (en) | High-temperature-resisting geopolymer based reinforcing and repairing mortar as well as preparation method and application of high-temperature-resisting geopolymer based reinforcing and repairing mortar | |
| CN109824323B (en) | Steel-bamboo mixed fiber regenerated thermal insulation concrete and preparation method thereof | |
| CN109020449B (en) | A kind of jet printing type ardealite base fireproof mortar and its preparation method and application of stalk fibre enhancing | |
| CN109095809B (en) | Expansion anti-cracking waterproof agent and application method thereof | |
| CN102643059B (en) | Bonding treating agent for concrete inorganic interface | |
| CN111646764A (en) | Whisker modified hydrated magnesium silicate material and preparation method and application thereof | |
| CN105236849B (en) | Chopped special thin fine stainless steel wire reinforced reactive-powder-concrete of one kind and preparation method thereof | |
| CN113968697B (en) | Dry powder interface treating agent for aerated concrete and preparation method thereof | |
| CN108439899B (en) | High-strength ultra-light cement-based composite material and preparation method thereof | |
| CN107200516A (en) | A kind of treated basalt fiber enhancing scoria light aggregate concrete and preparation method | |
| CN111646773B (en) | Preparation method of lithium slag concrete | |
| CN111003966B (en) | Sulfate-resistant low-alkali portland cement reinforcing agent and application thereof | |
| CN110041002A (en) | A kind of levigate rice hull ash base composite blend and its application | |
| CN106866072A (en) | A kind of exterior wall inorganic heat insulation material system | |
| WO2021012308A1 (en) | Organic fiber toughened inorganic composite artificial stone panel and preparation method therefor | |
| CN112174569A (en) | Micron-sized mineral admixture for concrete | |
| CN112521081A (en) | Building reinforced high-ductility concrete and preparation and construction method thereof | |
| CN107365132B (en) | Bottom layer plastering mortar and preparation method thereof | |
| CN116120014A (en) | Dam danger-removing reinforcing material and reinforcing method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |