CN1223237A - Permeability-resisting microcrystal cement additive agent - Google Patents
Permeability-resisting microcrystal cement additive agent Download PDFInfo
- Publication number
- CN1223237A CN1223237A CN98121975A CN98121975A CN1223237A CN 1223237 A CN1223237 A CN 1223237A CN 98121975 A CN98121975 A CN 98121975A CN 98121975 A CN98121975 A CN 98121975A CN 1223237 A CN1223237 A CN 1223237A
- Authority
- CN
- China
- Prior art keywords
- cement
- resisting
- concrete
- cement additive
- permeability
- 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.)
- Pending
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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a cement additive with impermeability action. Said cement additive contains high-activity SiO2 and superfine slag, and after said cement additive is added in the cement and mix-stirred by adding water, said additive and cement can produce hydration reaction so as to increase the compactness of the cement stone, and obviously raise the impermeability of the concrete. Said invented product does not produce corrosion action on the steel bar, and can improve the concrete wall effect, and possesses the strong action for inhibiting alkali-aggregate reaction of concrete.
Description
The present invention relates to cement additive, relate in particular to a kind of permeability-resisting microcrystal cement additive agent.
Concrete that cement and sandstone aggregate mix form and mortar material have used century more than one, and it becomes the requisite engineering materials of modern civil engineering.But, it is found that general concrete, mortar structure have some inevitable shortcomings, as easily producing microfracture between grout and aggregate, hole is always arranged in the structure, add that fine fisssure that drying shrinkage produces causes concrete and mortar is impervious, anti-pressure ability reduces.In recent years, under the influence of discipline developments such as Materials science, mesomechanics, chemistry of cement, the concrete material science has obtained developing rapidly, and the development and application of various water resisting admixtures has enlarged concrete function and application scope.At present, water resisting admixture can be divided into inanimate matter and organic two big classes by Chemical Composition, and the inanimate matter water-resisting agent comprises muriate metallic salt water-resisting agent, water glass class water-resisting agent, silicic acid matter powdery type; Organic water-resisting agent is tensio-active agent normally, and wetting ability fluidizer, hydrophobic nature fluidizer, micro foam agent and emulsion form water-resisting agent are arranged.Though muriate metallic salt water-resisting agent has good impervious effect, but can produce corrosive nature to reinforcing bar, water glass, silicic acid matter water-resisting agent are influential to concrete later stage ultimate compression strength and concrete density of later stage, and that organic class water-resisting agent is easy to generate is aging, lost efficacy, and be ageing very poor.
Purpose of the present invention is exactly to provide a kind of density of cement stone that makes constantly to strengthen for the defective that overcomes above-mentioned prior art existence, significantly improves the impervious microcrystal cement additive agent of concrete (mortar).
Purpose of the present invention can realize in the following manner:
Permeability-resisting microcrystal cement additive agent, the following prescription of its employing are formed (weight percentage, down together):
Industrial SiO
240～60%
Ultrafine slag 20～50%
Industrial pure Al
2O
30～25%
Naphthalene water reducer 0～5%
The specific surface area of above-mentioned ultrafine slag is 5000～8000cm
2/ gram.
Compared with prior art, product of the present invention has the following advantages and positively effect:
Product of the present invention contains the high reactivity SiO of a great deal of
2It mixes when stirring and is hydrolyzed into silicon sol adding water with cement, and the colloidal sol molecule may penetrate in each pore of concrete (mortar), blocks and cuts off capillary channel, simultaneously the calcium hydroxide effect that can produce with hydrated cementitious generates Calucium Silicate powder and hydrated cementitious stone formation one.The undecomposed crystallite of part, micro mist fill concrete hole, effect by the hydration reaction of micro mist and cement, increase the density of cement stone, under the effect of this physical chemistry of silicate, along with the continuous aquation of cement, the density of cement stone is constantly strengthened, and has significantly improved the impermeability of concrete (mortar).In addition, product of the present invention does not produce corrosive nature to reinforcing bar, does not exist aging and inefficacy, can improve concrete wall effect, and concrete alkali-aggregate reaction is had very big restraining effect.
Below in conjunction with embodiment, the invention will be further described: embodiment 1
Get industrial SiO
260 kilograms, 40 kilograms in Extra Fine Steel ironworks slag adopts the three-dimensional blender device to mix, and makes 100 kilograms of permeability-resisting microcrystal cement additive agents.Wherein the specific surface area of used ultrafine slag is 5000cm
2/ gram.Embodiment 2
Get industrial SiO
250 kilograms, 50 kilograms of ultrafine slags adopt the three-dimensional blender device to mix, and make 100 kilograms of products of the present invention.Wherein the specific surface area of used ultrafine slag is 6000cm
2/ gram.Embodiment 3
Get industrial SiO
260 kilograms, 20 kilograms of ultrafine slags, industrial pure Al
2O
320 kilograms, adopt the three-dimensional blender device that said components is mixed, make 100 kilograms of products of the present invention.Wherein used scoriaceous specific surface area is 8000cm
2/ gram.Embodiment 4
Get industrial SiO
250 kilograms, 25 kilograms of ultrafine slags, industrial Al
2O
320 kilograms, 5 kilograms of naphthalene water reducers adopt the three-dimensional blender device that said components is mixed, and make 100 kilograms of products of the present invention.Wherein used scoriaceous specific surface area is 5000cm
2/ gram.Present embodiment is a most preferred embodiment.Embodiment 5
Get industrial SiO
240 kilograms, 30 kilograms of ultrafine slags, industrial Al
2O
325 kilograms, 5 kilograms of naphthalene water reducers adopt the three-dimensional blender device that said components is mixed, and make 100 kilograms of products of the present invention.Wherein used scoriaceous specific surface area is 7000cm
2/ gram.
Product of the present invention is that 8～10% of cement consumption is advisable as its volume of a kind of cement additive.
Claims (2)
1. permeability-resisting microcrystal cement additive agent is characterized in that forming (weight percentage) by following prescription:
Industrial SiO
240～60%
Ultrafine slag 20～50%
Industrial pure Al
2O
30～25%
Naphthalene water reducer 0～5%
2. permeability-resisting microcrystal cement additive agent according to claim 1, the specific surface area that it is characterized in that ultrafine slag is 5000～8000cm
2/ gram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121975A CN1223237A (en) | 1998-10-30 | 1998-10-30 | Permeability-resisting microcrystal cement additive agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98121975A CN1223237A (en) | 1998-10-30 | 1998-10-30 | Permeability-resisting microcrystal cement additive agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1223237A true CN1223237A (en) | 1999-07-21 |
Family
ID=5227464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98121975A Pending CN1223237A (en) | 1998-10-30 | 1998-10-30 | Permeability-resisting microcrystal cement additive agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1223237A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460353C (en) * | 2007-03-08 | 2009-02-11 | 上海交通大学 | Multifunctional impervious microcrystal waterproof agent for concrete |
| CN103833415A (en) * | 2014-01-06 | 2014-06-04 | 江苏苏博特新材料股份有限公司 | Impervious reinforcing agent for constructional inorganic coating material and preparation method thereof |
| CN105884231A (en) * | 2016-04-20 | 2016-08-24 | 中建商品混凝土西安有限公司 | Mineral preservative for inhibiting corrosion to concrete and use method of mineral preservative |
| CN107119728A (en) * | 2017-05-04 | 2017-09-01 | 德清微晶防水材料有限公司 | A kind of basement construction technique and the three proofings crystallite addition pulvis for basement |
| CN107226633A (en) * | 2017-06-20 | 2017-10-03 | 上海微晶防水材料有限公司 | Three proofings micro-crystal and cement and villa basement waterproofing moistureproof and mildewproof method |
| CN108529980A (en) * | 2018-05-17 | 2018-09-14 | 中建西部建设西南有限公司 | A kind of concrete high-impermeable impedance agent and concrete |
-
1998
- 1998-10-30 CN CN98121975A patent/CN1223237A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460353C (en) * | 2007-03-08 | 2009-02-11 | 上海交通大学 | Multifunctional impervious microcrystal waterproof agent for concrete |
| CN103833415A (en) * | 2014-01-06 | 2014-06-04 | 江苏苏博特新材料股份有限公司 | Impervious reinforcing agent for constructional inorganic coating material and preparation method thereof |
| CN103833415B (en) * | 2014-01-06 | 2015-09-30 | 江苏苏博特新材料股份有限公司 | Impervious toughener of a kind of inorganic materials for building and preparation method thereof |
| CN105884231A (en) * | 2016-04-20 | 2016-08-24 | 中建商品混凝土西安有限公司 | Mineral preservative for inhibiting corrosion to concrete and use method of mineral preservative |
| CN107119728A (en) * | 2017-05-04 | 2017-09-01 | 德清微晶防水材料有限公司 | A kind of basement construction technique and the three proofings crystallite addition pulvis for basement |
| CN107119728B (en) * | 2017-05-04 | 2019-08-09 | 德清微晶防水材料有限公司 | A kind of basement construction technique and the three proofings crystallite for basement add pulvis |
| CN107226633A (en) * | 2017-06-20 | 2017-10-03 | 上海微晶防水材料有限公司 | Three proofings micro-crystal and cement and villa basement waterproofing moistureproof and mildewproof method |
| CN108529980A (en) * | 2018-05-17 | 2018-09-14 | 中建西部建设西南有限公司 | A kind of concrete high-impermeable impedance agent and concrete |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |