CN106854050A - Improve the additive of rheological property of concrete - Google Patents
Improve the additive of rheological property of concrete Download PDFInfo
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- CN106854050A CN106854050A CN201510902878.9A CN201510902878A CN106854050A CN 106854050 A CN106854050 A CN 106854050A CN 201510902878 A CN201510902878 A CN 201510902878A CN 106854050 A CN106854050 A CN 106854050A
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- concrete
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Abstract
The present invention relates to a kind of additive for improving rheological property of concrete, belong to technical field of concrete additives.The technical problems to be solved by the invention are to provide a kind of slurry ratio that need not improve and can just improve the additive of rheological property of concrete.The additive that the present invention improves rheological property of concrete is made up of the component of following weight proportion：95-105 parts, glycosaminoglycan 0.5-1.5 parts, glucan 0.5-1.5 parts of poly- naphthalene formaldehyde sulfonate salt.Additive of the present invention can be in the case of paste content not be increased, cement slurry rheological characteristic is obviously improved, the slump and autgmentability of fresh concrete is significantly improved, the rheological characteristic and volume stability of fresh concrete is improved, the structure durability of concrete is not influenceed, is had broad application prospects.
Description
Technical field
The present invention relates to a kind of additive for improving rheological property of concrete, belong to technical field of concrete additives.
Background technology
With developing rapidly for concrete industry, high performance concrete turns into the leading of concrete development.High performance concrete requirement
Fresh concrete has high workability, such as self-compacting high performance concrete.The development of this kind of concrete has not only adapted to contemporary coagulation
Geotechnological journey ultra-largeization, the requirement for complicating, and for the realization of intensive reinforcement structure design provides guarantee.It is even more important
, its labour intensity for reducing workman, it is to avoid the construction hidden danger brought due to vibrating leakiness, accelerate construct into
Degree, it is ensured that construction quality.
At present, for the rheological characteristic of improvement concrete, mainly there are two methods.A kind of method improves compound to add tackifier
Resist separate ability；Another method improves the separating resistance of compound by improving slurry ratio.Second method is to original
The requirement of material is high, and because paste content is improved, easily causes Shrinkage Cracking of Concrete, influences the structure durability of concrete.
The content of the invention
The technical problems to be solved by the invention are to provide one kind and need not improve slurry ratio and can just improve rheological property of concrete
Additive.
The additive that the present invention improves rheological property of concrete is made up of the component of following weight proportion：Poly- naphthalene formaldehyde sulfonate salt
95-105 parts, glycosaminoglycan 0.5-1.5 parts, glucan 0.5-1.5 parts.
Further, the additive of present invention raising rheological property of concrete is preferably made up of the component of following weight proportion：Poly- naphthalene
99 parts of formaldehyde sulfonate salt, 1 part of glycosaminoglycan, 1 part of glucan.
Wherein, the molecular weight of above-mentioned glycosaminoglycan is preferably 300-350 ten thousand.
The consumption that the present invention improves the additive of rheological property of concrete is 1% or so of gel rubber material (cement) consumption.
Additive of the present invention can be in the case of paste content not be increased, hence it is evident that is improved cement slurry rheological characteristic, is significantly improved and newly mix
The slump and autgmentability of concrete, improve the rheological characteristic and volume stability of fresh concrete, do not influence the structure of concrete resistance to
Long property, has broad application prospects.
Specific embodiment
The additive that the present invention improves rheological property of concrete is made up of the component of following weight proportion：Poly- naphthalene formaldehyde sulfonate salt
95-105 parts, glycosaminoglycan 0.5-1.5 parts, glucan 0.5-1.5 parts.
Further, the additive of present invention raising rheological property of concrete is preferably made up of the component of following weight proportion：Poly- naphthalene
99 parts of formaldehyde sulfonate salt, 1 part of glycosaminoglycan, 1 part of glucan.
Wherein, the molecular weight of above-mentioned glycosaminoglycan is preferably 300-350 ten thousand.
The consumption that the present invention improves the additive of rheological property of concrete is 1% or so of gel rubber material (cement) consumption.
Specific embodiment of the invention is further described with reference to embodiment, does not therefore limit the present invention to institute
Among the scope of embodiments stated.
The molecular weight of glycosaminoglycan is 3,200,000 in following embodiments.
The present invention of embodiment 1 improves the preparation of the additive of rheological property of concrete
Poly- naphthalene formaldehyde sulfonate salt 97kg, glycosaminoglycan 1.5kg, glucan 1.5kg are taken, is mixed, obtained final product.
The present invention of embodiment 2 improves the preparation of the additive of rheological property of concrete
Poly- naphthalene formaldehyde sulfonate salt 99kg, glycosaminoglycan 1kg, glucan 1kg are taken, is mixed, obtained final product.
The present invention of embodiment 3 improves the preparation of the additive of rheological property of concrete
Poly- naphthalene formaldehyde sulfonate salt 105kg, glycosaminoglycan 0.8kg, glucan 1.2kg are taken, is mixed, obtained final product.
The additive for adding embodiment of the present invention 1-3 to prepare in concrete, addition is the 1% of cement consumption, concrete matched
Than as follows, stone 790kg, river sand 490kg, P.052.5 cement 350kg, water 145kg, additive 3.5kg of the present invention.
Wherein, cobble-stone diameter is 5-20mm, and river sand modulus of fineness is 2.8.Simultaneously with the concrete performance without additive of the present invention
Contrasted, as a result as shown in table 1.
The concrete performance examination result of table 1
| The slump (mm) | Divergence (mm) | Bleeding rate (%) | U-shaped instrument (△ h, mm) | |
| Embodiment 1 | 255 | 662 | 0 | 23 |
| Embodiment 2 | 260 | 665 | 0 | 25 |
| Embodiment 3 | 252 | 661 | 0 | 22 |
| It is not added with additive | 200 | 610 | 0 | 23 |
Claims (3)
1. the additive of rheological property of concrete is improved, it is characterised in that be made up of the component of following weight proportion：Poly- naphthaldehyde sulphur
Acid sodium-salt 95-105 parts, glycosaminoglycan 0.5-1.5 parts, glucan 0.5-1.5 parts.
2. it is according to claim 1 improve rheological property of concrete additive, it is characterised in that by following weight proportion
Component is constituted：99 parts of poly- naphthalene formaldehyde sulfonate salt, 1 part of glycosaminoglycan, 1 part of glucan.
3. it is according to claim 1 and 2 improve rheological property of concrete additive, it is characterised in that：The osamine gathers
The molecular weight of sugar is 300-350 ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510902878.9A CN106854050A (en) | 2015-12-09 | 2015-12-09 | Improve the additive of rheological property of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510902878.9A CN106854050A (en) | 2015-12-09 | 2015-12-09 | Improve the additive of rheological property of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106854050A true CN106854050A (en) | 2017-06-16 |
Family
ID=59132933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510902878.9A Pending CN106854050A (en) | 2015-12-09 | 2015-12-09 | Improve the additive of rheological property of concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106854050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149214A (en) * | 2021-12-06 | 2022-03-08 | 北京住总建筑科技有限公司 | Early strength concrete and preparation method and application thereof |
-
2015
- 2015-12-09 CN CN201510902878.9A patent/CN106854050A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149214A (en) * | 2021-12-06 | 2022-03-08 | 北京住总建筑科技有限公司 | Early strength concrete and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170616 |
|
| WD01 | Invention patent application deemed withdrawn after publication |