CN1295181C - Composite additive for high-strength elastic concrete - Google Patents
Composite additive for high-strength elastic concrete Download PDFInfo
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- CN1295181C CN1295181C CNB2005100124908A CN200510012490A CN1295181C CN 1295181 C CN1295181 C CN 1295181C CN B2005100124908 A CNB2005100124908 A CN B2005100124908A CN 200510012490 A CN200510012490 A CN 200510012490A CN 1295181 C CN1295181 C CN 1295181C
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Abstract
The present invention relates to an additive for concrete, particularly to a compound additive for high-strength elastic concrete, which solves the problems of poor toughness, little bending strength, easy surface crack and damage under the action of moment heavy pressure or impact force and surface fracture under a severe condition of the existing concrete component. The compound additive for high-strength elastic concrete is composed of A group powder and B group liquid, wherein the A group powder is composed of 65 to 75% of silicon dioxide, 2 to 10% of hydroxy carboxylic acid salt, 10 to 20% of lime stone powder, 0.1 to 0.8% of dispersing agent, 0.05 to 0.2% of water reducing agent and 3 to 6% of rubber powder. The preparing method of the B group liquid comprises the following steps: 20 to 300 grams of polyscrylamide is added into 100 liters of water and is stirred to prepare a polyscrylamide solution; 10 to 200 grams of polyether is added into 100 liters of water and is stirred to prepare a polyether solution; the polyether solution and the polyscrylamide solution are mixed according to the ratio of 1: 2 to 4 and are then stirred to obtain the B group liquid. The concrete component with the added compound additive can reduce the harm of strong impact force to the component and enhance the durability of the concrete component and a structure.
Description
Technical field
The present invention relates to a kind of concrete additive, be specially a kind of composite additive of high-strength elastic concrete.
Background technology
Known concrete member (as the foundation works of concrete railway sleeper, national defence weather resistance, cement bridge floor, bridge, motorway bed course etc.) is a rigid structure.At present, its ultimate compression strength is more paid attention in judge to known concrete member, therefore, available coagulation soil member ultimate compression strength is bigger, but lacking toughness, folding strength lower (folding strength of existing concrete is the 10%-15% of ultimate compression strength), concrete member matter is crisp, and the surface is prone to be full of cracks, breakage; Major cause is that its interior capillary porosity (also claiming porosity) is higher after the concrete setting, and the particle bond stress is poor; Like this, concrete member is under the effect of (frequently) moment weight or surging force, cause concrete member (frequently) ultimate bearing and make component surface be full of cracks, breakage occur, not only reduce the work-ing life of concrete member, the member fracture will cause crushing accident during badly broken.
Summary of the invention
It is big but toughness is relatively poor, folding strength is less that the present invention solves existing concrete member ultimate compression strength, concrete member matter is crisp, member is prone to be full of cracks, breakage at the effect lower surface of (frequently) moment weight or surging force, the problem that occurs fracture when serious provides a kind of composite additive of high-strength elastic concrete.This additive can increase concrete folding strength and toughness under the situation that does not influence concrete crushing strength.
The present invention adopts following technical scheme to realize: a kind of composite additive of high-strength elastic concrete, constitute by A group meal and B group liquids, the following formation of A group meal: silicon-dioxide 65-75%, hydroxycarboxylate 2-10%, limestone powder 10-20%, dispersion agent 0.1-0.8%, water reducer 0.05-0.2%, rubber powder 3-6%; The following formation of B group liquids: the polyacrylamide of 20-300 gram adds in 100 premium on currency and stirs, and makes polyacrylamide solution; The polyethers of 10-200 gram adds in 100 premium on currency and stirs, and makes polyethers solution; Polyethers solution and polyacrylamide solution are with 1: 2-4 mixes and stirring obtains B group liquids.
Hydroxycarboxylate in the A group meal is a kind of known industrial chemicals, can buy from Yichuan, Luoyang City, Henan Province equality chemical building material institute at least; Dispersion agent is building materials field a kind of industrial chemicals commonly used, and described dispersion agent is that hexadecyl benzene sulfonic acid sodium salt or technical grade draw back powder (can buy from Tianjin dye chemical industry factory at least) or other dispersion agent.Water reducer also is building materials field a kind of industrial chemicals commonly used, is ligninsulfonate or naphthalene series high-efficiency water-reducing agent or other water reducer, and ligninsulfonate and naphthalene series high-efficiency water-reducing agent can be buied from Tianjin building materials chemical industry factory at least.Polyethers in the B group liquids is a kind of known industrial chemicals, can buy from Guangzhou Organic Chemical Plant at least, and the name of product that prints in its packing bag of dispatching from the factory just is " polyethers ".Described rubber powder can obtain by pulverizing waste rubber or waste rubber product.
A group meal and B group liquids are added in the concrete with the 5-12% and the 3-5% of cement weight respectively during use.
Composite additive and concrete generation hydration reaction generate inorganic silicon colloid shape material, bond the aggregate particle, make it be the micelle shape and link, not bleeding, segregation when making concrete setting, homogeneous solidifies, thereby change concrete hydrating calculus quality, reduce porosity; It is closely knit to solidify the back concrete structure, forms to have unit elongation, elasticity and flexible concrete structure.This composite additive does not have chemical corrosivity.Do not influence concrete ultimate compression strength, can make concrete folding strength bring up to the 50-70% of ultimate compression strength.
Can make the ultimate compression strength of concrete member be up to C70-C80 by this composite additive; Folding strength reaches the 50-70% of ultimate compression strength; Impervious greater than S30, weather resistance is stable; The concrete pH value equals 9 (pH value of existing concrete is 13), has reduced chemical corrosivity.Be added with the concrete member of this composite additive, can reduce the harm of strong impact force, improve the weather resistance of concrete member, structures member.
Embodiment
Embodiment 1
A kind of composite additive of high-strength elastic concrete is made of the following formation of A group meal A group meal and B group liquids: silicon-dioxide 70%, and the hydroxycarboxylate 8%, limestone powder 17.5%, dispersion agent 0.4%, water reducer 0.1%, rubber powder 4%; The following formation of B group liquids: the polyacrylamides of 50 grams add in 100 premium on currency and stir, and make polyacrylamide solution; The polyethers of 40 grams add in 100 premium on currency and stir, and make polyethers solution; Polyethers solution and polyacrylamide solution mixed with 1: 3 and stirring obtains B group liquids.
A group meal is mixed in proportion silicon-dioxide, hydroxycarboxylate, Wingdale when concrete preparation, grinds (150-300 order) and obtains work in-process.In the work in-process powder, add dispersion agent (selecting the hexadecyl benzene sulfonic acid sodium salt for use), water reducer (selecting ligninsulfonate for use) and rubber powder (150 order) in proportion, stir, be incorporated with the woven bag of liner, be A group meal.
B group liquids is when concrete preparation, also stir according to the above ratio and make polyacrylamide solution and polyethers solution, polyethers solution and polyacrylamide solution were mixed with 1: 3, carry out stirring the second time (more than 15 minutes), mixed liquid viscosity reaches not stratified precipitation, segregation, and the packaging vessel of packing into becomes B group liquids.
A group meal and B group liquids are added in the concrete with the 5-12% and the 3-5% of cement weight respectively during use.
The composite additive that present embodiment makes, owing to the consumption of polyacrylamide and polyethers in its B group liquids is relative less, so this composite additive mainly is applicable to the concrete that intensity is relatively low.
Embodiment 2
A kind of composite additive of high-strength elastic concrete, constitute by A group meal and B group liquids, the following formation of A group meal: silicon-dioxide 65%, the hydroxycarboxylate 10%, limestone powder 18%, dispersion agent (selecting for use technical grade to draw back powder) 0.8%, water reducer (selecting naphthalene series high-efficiency water-reducing agent for use) 0.2%, rubber powder 6%; The following formation of B group liquids: the polyacrylamides of 300 grams add in 100 premium on currency and stir, and make polyacrylamide solution; The polyethers of 200 grams add in 100 premium on currency and stir, and make polyethers solution; Polyethers solution and polyacrylamide solution mixed with 1: 2 and stirring obtains B group liquids.
The composite additive that present embodiment makes, owing to the consumption of polyacrylamide and polyethers in its B group liquids is relative higher, so this composite additive mainly is applicable to the concrete that intensity is higher relatively.
Embodiment 3
A kind of composite additive of high-strength elastic concrete is made of the following formation of A group meal A group meal and B group liquids: silicon-dioxide 75%, and the hydroxycarboxylate 5%, limestone powder 14.42%, dispersion agent 0.5%, water reducer 0.08%, rubber powder 5%; The following formation of B group liquids: the polyacrylamides of 150 grams add in 100 premium on currency and stir, and make polyacrylamide solution; The polyethers of 120 grams add in 100 premium on currency and stir, and make polyethers solution; Polyethers solution and polyacrylamide solution mixed with 1: 4 and stirring obtains B group liquids.
Claims (3)
1, a kind of composite additive of high-strength elastic concrete, it is characterized by: constitute by A group meal and B group liquids, the following formation of A group meal: silicon-dioxide 65-75%, hydroxycarboxylate 2-10%, limestone powder 10-20%, dispersion agent 0.1-0.8%, water reducer 0.05-0.2%, rubber powder 3-6%; The following formation of B group liquids: the polyacrylamide of 20-300 gram adds in 100 premium on currency and stirs, and makes polyacrylamide solution; The polyethers of 10-200 gram adds in 100 premium on currency and stirs, and makes polyethers solution; Polyethers solution and polyacrylamide solution are with 1: 2-4 mixes and stirring obtains B group liquids; A group meal and B group liquids are added in the concrete with the 5-12% and the 3-5% of cement weight respectively during use.
2, the composite additive of high-strength elastic concrete as claimed in claim 1 is characterized by: the dispersion agent in the A group meal is that hexadecyl benzene sulfonic acid sodium salt or technical grade draw back powder.
3, the composite additive of high-strength elastic concrete as claimed in claim 1 or 2 is characterized by: the water reducer in the A group meal is ligninsulfonate or naphthalene series high-efficiency water-reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100124908A CN1295181C (en) | 2005-04-30 | 2005-04-30 | Composite additive for high-strength elastic concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100124908A CN1295181C (en) | 2005-04-30 | 2005-04-30 | Composite additive for high-strength elastic concrete |
Publications (2)
| Publication Number | Publication Date |
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| CN1699256A CN1699256A (en) | 2005-11-23 |
| CN1295181C true CN1295181C (en) | 2007-01-17 |
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| CNB2005100124908A Expired - Fee Related CN1295181C (en) | 2005-04-30 | 2005-04-30 | Composite additive for high-strength elastic concrete |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007007421B4 (en) * | 2007-02-12 | 2017-05-04 | Oliver Thöne | Mixture usable as aggregate for concrete |
| CN115572098B (en) * | 2022-10-27 | 2024-05-28 | 光明铁道控股有限公司 | Concrete additive and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020166479A1 (en) * | 2001-03-05 | 2002-11-14 | Chongjun Jiang | Low density accelerant and strength enhancing additive for cementitious products and methods of using same |
| CN1393420A (en) * | 2001-06-27 | 2003-01-29 | 马奔 | Metal rubber concrete and its preparing process |
| CN1431161A (en) * | 2002-12-31 | 2003-07-23 | 武汉理工大学 | Technique and method for preparing mineral additive of multi-function concrete |
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2005
- 2005-04-30 CN CNB2005100124908A patent/CN1295181C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020166479A1 (en) * | 2001-03-05 | 2002-11-14 | Chongjun Jiang | Low density accelerant and strength enhancing additive for cementitious products and methods of using same |
| CN1393420A (en) * | 2001-06-27 | 2003-01-29 | 马奔 | Metal rubber concrete and its preparing process |
| CN1431161A (en) * | 2002-12-31 | 2003-07-23 | 武汉理工大学 | Technique and method for preparing mineral additive of multi-function concrete |
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| Publication number | Publication date |
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| CN1699256A (en) | 2005-11-23 |
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Granted publication date: 20070117 Termination date: 20180430 |