CN1526679A - Anticrack waterproof agent for cement-base material - Google Patents
Anticrack waterproof agent for cement-base material Download PDFInfo
- Publication number
- CN1526679A CN1526679A CNA031510787A CN03151078A CN1526679A CN 1526679 A CN1526679 A CN 1526679A CN A031510787 A CNA031510787 A CN A031510787A CN 03151078 A CN03151078 A CN 03151078A CN 1526679 A CN1526679 A CN 1526679A
- Authority
- CN
- China
- Prior art keywords
- water
- cement
- proof agent
- crack
- agent
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention is one kind of anticrack waterproof agent for preventing the shrinkage and cracking of cement-base material in plastic state and raising the anti-seepage ability of hardened cement-base material. The anticrack waterproof agent consists of plastic concrete crack preventing component and hardened concrete seepage preventing component. The anticrack waterproof agent can reduce plastic shrinkage cracking of cement-base material, such as mortar and concrete, from initial solidification to final solidification by 80-100 %, and raise the exudation pressure of hardened concrete by 300-500 %. The present invention may be used widely in underground continuous cement concrete wall, basement, water processing pond, roofing, terrace, revetment, dam and other engineering.
Description
Technical field
The invention belongs to Materials science and construction engineering technical field, be specifically related to a kind of anti-cracking waterproof material that is used for cement-based material (cement paste, mortar, concrete).
Technical background
Concrete is a consumption maximum in the world, one of most popular material of construction.At present, the annual concrete amount of China has reached about 10 billion cubic meters.By 2010, China's concrete amount doubled above more now.Therefore in the quite a long time from now on, concrete will be the main material of construction that China's modern project is built.And because it is applied widely, low price, easy casting, durable in use, also can effectively utilize using industrial solid waste to make energy saving and environment friendly material of construction etc., and the irreplaceable effect of performance other materials in numerous building engineering fields.
But undeniable, concrete has also that tensile strength is low, and ultimate tensile strength is little, poor, the impervious scarce capacity of shock strength, is easy to shortcomings such as plastic shrinkage cracking.Wherein the defective of cement concrete is great to the concrete engineering quality influence, especially to high-strength concrete, gently then cause and do over again because of directly influencing the engineering visual appearance at Construction stage, heavy then bring the plastic stage shrinkage crack into the engineering operational phase, make concrete influence performances such as its impervious, freeze proof, anti-chemical mediator erosion, anti-steel bar corrosion because of this " congenital " defective, cause concrete to shorten greatly work-ing life, concrete safeguards that rehabilitation expense rises in a large number.And,, the infiltration phenomenon under high hydraulic pressure effect, will occur, thereby influence the use of concrete works because there is the network of capillary tube passage in its inside for uncracked concrete of plastic stage.
Studies show that both at home and abroad, when the synthon about admixture 0.05-0.10% (volume fraction) in concrete, as Nycon fiber, polypropylene fibre etc., can under the condition that does not reduce mechanical performance of concrete, reduce its early-age shrinkage crack 50-100%, thereby improve the ability of the anti-plastic shrinkage cracking of concrete effectively.But only add filamentary material the improvement of impermeability still is apparent not enough, need takes to improve impervious measure to satisfy the requirement of engineering to impervious ability.The technological line that improves concrete permeability resistance at present mainly contains following several: adopt high efficiency water reducing agent, the levigate compound of admixture, optimize aggregate grading, admixture swelling agent etc.Adopt aforesaid method can improve concrete impermeability to some extent, but all can not effectively reduce the dehydration shrinkage cracking under the concrete plastic state, in case and plastic shrinkage cracking appears in concrete, waterproof measure will not have waterproof effect, and concrete impermeability also just completely loses.Former needs development is a kind of both can to prevent the concrete plastic shrinkage cracking, and the anti-cracking waterproof agent material that the maturing impermeability is significantly improved is to satisfy the needs of concrete works.
Summary of the invention
The object of the present invention is to provide a kind of concrete shrinkage that can prevent to ftracture, improve the anti-crack water-proof agent of the cement-based material of concrete impermeability.
The present invention proposes the anti-crack water-proof agent of cement-based material, is made up of plastic concrete anticracking component and the impervious component of maturing.Plastic concrete anticracking component can adopt organic synthetic fibers (as one or more of polyethylene fibre, polypropylene fibre, trevira, nylon fiber etc.), inorganic fibre (as one or more of steel fiber, glass fibre, ceramic fiber, mineral fibre etc.) also can be the blend fiber of organic fibre and inorganic fibre.The impervious component of maturing can adopt water reducer (as naphthalene water reducer, resene water reducer, carboxylic-acid water reducer etc.), active mixed material (as flyash, slag powders etc. or its mixture), exciting agent (as one or more of calcium sulfate, sodium sulfate, vitriolate of tartar etc.) and water-holding agent (as wilkinite, methylcellulose gum etc. one or more).
The each component of above-mentioned anti-crack water-proof agent can adopt following quality proportioning:
Organic synthetic fibers 5～15%
Inorganic fibre 0～10%
High efficiency water reducing agent 15～25%
Active mixed material 15～30%
Exciting agent 10～50%
Water-holding agent 5～10%
Total amount satisfies 100%
Its more excellent proportioning is as follows:
Organic synthetic fibers 8～10%
Inorganic fibre 1～5%
High efficiency water reducing agent 18～20%
Active mixed material 20～25%
Exciting agent 20～45%
Water-holding agent 6～8%
Total amount satisfies 100%
Among the present invention, the Young's modulus of organic synthetic fibers is generally 2～10GPa, tensile strength is 300～800MPa, the ultimate elongation rate is 8～60%, fibre section diameter (or equivalent diameter) is 25～111 μ m, and staple length is 10～40mm, and the fibre section shape has shapes such as circle, rectangle, trilobal, the fiber axial shape has linear, waviness etc., and the fibrous termination shape has concordant shape, dumb-bell shape, end hook shape etc.
Among the present invention, the Young's modulus of inorganic fibre is generally 60～350GPa, tensile strength is 800～4500MPa, the ultimate elongation rate is 2～6%, fibre section diameter (or equivalent diameter) is 3～800 μ m, and staple length is 3～40mm, and the fibre section shape has shapes such as circle, rectangle, trilateral, the fiber axial shape has linear, waviness, impression shape etc., and the fibrous termination shape has concordant shape, dumb-bell shape, end hook shape etc.
Among the present invention, the water-reducing rate of water reducer is generally more than or equal to 15%.
Among the present invention, the quality of fly ash in the active mixed material should be more than the secondary ash, and the quality of slag powders should be more than S95.
Among the present invention, the exciting agent active chemical is not less than 95%.
Among the present invention, bentonitic 0.074mm screen over-size should be less than 4% in the water-holding agent, and the viscosity of methylcellulose gum should be in the 50-5000MPaS scope.
The preparation method of the anti-crack water-proof agent that the present invention proposes is as follows: the fiber of at first choosing different diameter, length, cross-sectional shape, axial shape, termination shape, measure various filamentary materials and other material by said ratio then, in mixing container that various material mixing are even, mixing time 2～10 minutes, promptly obtain product of the present invention, be solid fiber, dusty material.Product is packaged into bag after should measuring, should moistureproof, fire prevention during storage.
The using method of anti-crack water-proof agent of the present invention:
Press 2～5% metering admixtures anti-crack water-proof agent of the present invention of cement quality in the cement-based material;
In the sill that mixes cement, anti-crack water-proof agent added with other cement-based material stir, perhaps cement-based material stir finish after, add anti-crack water-proof agent again and continue to stir.
Thereafter cast, vibrate, wipe one's face, the person is not the same with mixing the anti-crack water-proof agent for operation such as maintenance.
Anti-crack water-proof agent of the present invention has the following advantages and effect:
1. behind the admixture anti-cracking waterproof agent material of the present invention, the plastic shrinkage cracking performance of cement-based material can reduce significantly, and when adopting the flat band method test, the total weighted value of its plastic shrinkage cracking can not reduce about 80～100% than mixing the person.
2. behind the admixture anti-cracking waterproof agent material of the present invention, cement-based material impermeability (representing with seepage pressure) can not improve about 300～500% than mixing the person.
3. behind the admixture anti-cracking waterproof agent material of the present invention, the workability of cement-based material can obviously improve, and ultimate compression strength, folding strength all can improve more than 30%, and shock strength can improve 50～500%.
4. behind the admixture anti-cracking waterproof agent material of the present invention, the frost resistance of cement-based material improves 100-300%.
5. behind the admixture anti-cracking waterproof agent material of the present invention, the early stage dry shrinkage of cement-based material sclerosis does not reduce 10～30% approximately than mixing the person.
Anti-crack water-proof agent of the present invention, can be used in the engineerings such as cement concrete underground diaphragm wall, vault, water treating pond, roofing, terrace, bank protection, dam, prevent the shrinkage cracking under the cement-based material plastic state, improve the impervious ability after cement-based material hardens simultaneously.
Embodiment
The invention is further illustrated by the following examples.
Embodiment 1
Anti-crack water-proof agent quality proportioning is:
Polypropylene fibre (trilobal, fiber equivalent diameter 34 μ m, staple length 20mm) 8%
SN-II high efficiency water reducing agent 18%
II level flyash 25%
Calcium sulfate 25%
Sodium sulphate 18%
Wilkinite 6%
When anti-crack water-proof agent mixes sand-cement slurry (32.5 Portland cements: medium sand: water=1: 1: 0.5) with 0.03% of cement quality, adopt flat band method to record its decrement and be about 80% plastic shrinkage cracking, with comparing under the flowability with than not mixing the person, impervious (representing with seepage pressure) can improve about 300%, ultimate compression strength, folding strength improve 35% and 30% respectively, shock strength improves 50%, and frost resistance improves 100%, and the dry shrinkage in the 28 day length of time of mortar reduces 10% approximately.
Embodiment 2
Anti-crack water-proof agent quality proportioning is:
Polypropylene fibre (trilobal, fiber equivalent diameter 34 μ m, staple length 15mm) 5%
Ceramic fiber (alumina content 45%, Fibre diameter 3 μ m, staple length 5mm) 5%
FDN high efficiency water reducing agent 20%
II level flyash 25%
Calcium sulfate 25%
Sodium sulphate 18%
Methylcellulose gum 2%
When anti-crack water-proof agent mixes sand-cement slurry (32.5 Portland cements: medium sand: water=1: 1: 0.5) with 0.03% of cement quality, adopt flat band method to record its decrement and be about 90% plastic shrinkage cracking, with comparing under the flowability with than not mixing the person, impervious (representing with seepage pressure) can improve about 350%, ultimate compression strength, folding strength improve 35% and 40% respectively, shock strength improves 100%, and frost resistance improves 150%, and the dry shrinkage in the 28 day length of time of mortar reduces 20% approximately.
Embodiment 3
Anti-crack water-proof agent quality proportioning is:
Nylon fiber (circle, straight shape, Fibre diameter 43 μ m, staple length 20mm) 10%
Glass fibre (zirconia content 6%, Fibre diameter 13 μ m, staple length 10mm) 4%
SM high efficiency water reducing agent 25%
S105 slag powders 21%
Calcium sulfate 20%
Sodium sulphate 10%
Wilkinite 10%
When anti-crack water-proof agent mixes cement concrete (32.5 Portland cements: 5-25mm rubble: medium sand: water=1: 0.75: 0.75: 0.5) with 0.05% of cement quality, adopt flat band method to record its decrement and be about 95% plastic shrinkage cracking, with comparing under the flowability with than not mixing the person, impervious (representing with seepage pressure) can improve about 400%, ultimate compression strength, folding strength improve 40% and 40% respectively, shock strength improves 300%, frost resistance improves 200%, and the dry shrinkage in the 28 day length of time of concrete reduces 30% approximately.
Embodiment 4
The anti-crack water-proof agent proportioning is:
Trevira (circular, Fibre diameter 25 μ m, staple length 18mm) 15%
Steel fiber (trilateral, end hook shape, Fibre diameter 450 μ m, staple length 32mm) 10%
Flower king's (carboxylic-acid) high efficiency water reducing agent 15%
S105 slag powders 30%
Calcium sulfate 25%
Wilkinite 5%
When anti-crack water-proof agent mixes cement concrete (42.5 Portland cements: 5-40mm rubble: medium sand: water=1: 0.75: 0.75: 0.45) with 0.05% of cement quality, adopt flat band method to record its decrement and be about 100% plastic shrinkage cracking, with comparing under the flowability with than not mixing the person, impervious (representing with seepage pressure) can improve about 500%, ultimate compression strength, folding strength improve 50% and 45% respectively, shock strength improves 500%, frost resistance improves 300%, and the dry shrinkage in the 28 day length of time of concrete reduces 30% approximately.
Claims (10)
1, a kind of anti-crack water-proof agent of cement-based material by plastic concrete anticracking component and the impervious component of maturing compound composition, is characterized in that described plastic concrete anticracking component is made up of inorganic fibre and/or organic synthetic fibers; The impervious component of described maturing is made up of water reducer, active mixed material, exciting agent, water-holding agent.
2, anti-crack water-proof agent according to claim 1 is characterized in that described organic synthetic fibers is one or more of polyethylene fibre, polypropylene fibre, trevira, nylon fiber.
3, anti-crack water-proof agent according to claim 1 is characterized in that described inorganic fibre is one or more of steel fiber, glass fibre, ceramic fiber, mineral fibre.
4, anti-crack water-proof agent according to claim 1 is characterized in that described water reducer is a kind of of naphthalene water reducer, resene water reducer, carboxylic class water reducer.
5, anti-crack water-proof agent according to claim 1 is characterized in that described exciting agent is one or more of calcium sulfate, sodium sulfate, vitriolate of tartar.
6, anti-crack water-proof agent according to claim 1 is characterized in that described water-holding agent is wilkinite, methylcellulose gum or its mixture.
7, anti-crack water-proof agent according to claim 1, it is characterized in that each constituent mass per-cent is: organic synthetic fibers is 5～15%, inorganic fibre is 0～10%, high efficiency water reducing agent is 15～25%, active mixed material is 15～30%, exciting agent is 10～50%, and water-holding agent is 5～10%, and total amount satisfies 100%.
8, anti-crack water-proof agent according to claim 7, it is characterized in that each constituent mass per-cent is: organic synthetic fibers is 8～10%, inorganic fibre is 1～5%, high efficiency water reducing agent is 18～20%, active mixed material is 20～25%, exciting agent is 20～45%, and water-holding agent is 6～8%, and total amount satisfies 100%.
9, anti-crack water-proof agent according to claim 1, the shape of cross section that it is characterized in that organic synthetic fibers and inorganic fibre is circle, rectangle, trilobal, the fiber axial shape is linear, waviness, machicolated form, and the fibrous termination form is straight shape, dumb-bell shape, end hook shape; The inorganic fibre diameter is 3～800 μ m, and staple length is 3～40mm; The organic synthetic fibers diameter is 25～111 μ m, and staple length is 10～40mm.
10, a kind of using method of anti-crack water-proof agent according to claim 1 is characterized in that 2～5% metering admixtures anti-crack water-proof agent of the present invention by cement quality in the cement-based material; In the sill that mixes cement, anti-crack water-proof agent added with other cement-based material stir, perhaps cement-based material stir finish after, add anti-crack water-proof agent again and continue to stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031510787A CN100348528C (en) | 2003-09-19 | 2003-09-19 | Anticrack waterproof agent for cement-base material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031510787A CN100348528C (en) | 2003-09-19 | 2003-09-19 | Anticrack waterproof agent for cement-base material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1526679A true CN1526679A (en) | 2004-09-08 |
| CN100348528C CN100348528C (en) | 2007-11-14 |
Family
ID=34286896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031510787A Expired - Fee Related CN100348528C (en) | 2003-09-19 | 2003-09-19 | Anticrack waterproof agent for cement-base material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100348528C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355692C (en) * | 2004-09-20 | 2007-12-19 | 杨小平 | Anti cracking antipercelation grout powder |
| CN102503200A (en) * | 2011-12-19 | 2012-06-20 | 邢锋 | Fiber composite phosphoaluminate cement and slurry thereof and concrete preparation method |
| CN103288377A (en) * | 2013-06-18 | 2013-09-11 | 中铁二院工程集团有限责任公司 | Micro pile mortar admixture |
| CN109369092A (en) * | 2018-12-10 | 2019-02-22 | 天津志清建筑工程有限公司 | It is a kind of for the waterproof of building, barrier material and its application method |
| CN115110370A (en) * | 2022-07-12 | 2022-09-27 | 济南市章丘区市政工程处 | High-strength permeable concrete road |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086367C (en) * | 1998-07-17 | 2002-06-19 | 中国科学院化学研究所 | Fine PP fiber reinforced cement based composite material, and use thereof |
| CN1208506C (en) * | 2001-06-05 | 2005-06-29 | 傅华 | Modified cracking and seepage resisting polyproplylene fiber for concrete and mortar |
| CN1166580C (en) * | 2001-12-07 | 2004-09-15 | 北京市城昌商品混凝土联营公司 | Fibre anti-permeation cracking-resistant concrete |
-
2003
- 2003-09-19 CN CNB031510787A patent/CN100348528C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355692C (en) * | 2004-09-20 | 2007-12-19 | 杨小平 | Anti cracking antipercelation grout powder |
| CN102503200A (en) * | 2011-12-19 | 2012-06-20 | 邢锋 | Fiber composite phosphoaluminate cement and slurry thereof and concrete preparation method |
| CN103288377A (en) * | 2013-06-18 | 2013-09-11 | 中铁二院工程集团有限责任公司 | Micro pile mortar admixture |
| CN109369092A (en) * | 2018-12-10 | 2019-02-22 | 天津志清建筑工程有限公司 | It is a kind of for the waterproof of building, barrier material and its application method |
| CN115110370A (en) * | 2022-07-12 | 2022-09-27 | 济南市章丘区市政工程处 | High-strength permeable concrete road |
| CN115110370B (en) * | 2022-07-12 | 2024-06-11 | 济南市章丘区市政工程处有限公司 | High-strength permeable concrete road |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100348528C (en) | 2007-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106699077B (en) | A kind of assembled architecture bar connecting sleeve grouting material | |
| CN100434382C (en) | Plastic anti-crack modified fiber of cement-based material and prepn. process | |
| CN112341123B (en) | Seawater corrosion resistant ceramic tile adhesive and production method thereof | |
| CN107098637B (en) | A kind of ecological permeable concrete material and preparation method thereof | |
| CN104986996B (en) | A kind of composite fibre macromolecule enhancing concrete acoustical barrier and preparation method thereof | |
| CN1300039C (en) | Expansion designable high strength steel pipe concrete and its prepn | |
| CN103265253B (en) | High-performance grouting material for prefabricated building construction, and preparation method thereof | |
| CN103058619B (en) | Mineral powder-doped polymer waterproof mortar and using method thereof | |
| CN103896527A (en) | Lightweight high-strength cement based composite material | |
| CN110395963B (en) | Construction waste recycled concrete | |
| CN1712383A (en) | Corrosion proof high performance marine concrete and its production | |
| CN103803918A (en) | Porcelain powder waste mixed cement-based tiny-expansion crack repairing mortar and using method thereof | |
| CN104016611B (en) | A kind of permanent seal cooling concrete waterproofer | |
| CN107352923A (en) | Water-tight concrete and the method for preparing the section of jurisdiction for duct pieces of shield tunnel | |
| CN107176812A (en) | High intensity contraction-free grouting concrete and its production method | |
| CN108793857A (en) | A kind of shield-tunneling construction synchronous grouting dry-mixed mortar and preparation method thereof | |
| CN100462324C (en) | Powder coal ash expanding self-dense concrete for filling square steel pipe | |
| CN108675694A (en) | A kind of morning weather-proof geo-polymer pervious concrete by force | |
| CN108191357A (en) | A kind of enhancing C30 flyash-haydite concretes and preparation method thereof | |
| CN115073093A (en) | Low-shrinkage high-strength self-compacting recycled concrete and preparation method thereof | |
| CN1356286A (en) | Expandable grout for construction in winter and its preparing process | |
| CN105481281A (en) | Waterproofing agent capable of enhancing waterproofing performance and water impermeability of concrete | |
| CN108640602A (en) | A kind of polymer cement concrete | |
| CN1526679A (en) | Anticrack waterproof agent for cement-base material | |
| CN111908882A (en) | Reinforcing fiber anti-crack reinforcing steel bar sleeve grouting material and preparation method thereof |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20100919 |