Modified additive suitable for machine-made sand pipe pile concrete

An admixture and concrete technology, applied in the field of composite multifunctional admixtures, can solve problems such as affecting the appearance of concrete, and achieve the effects of good system stability, easy construction, and improved workability

Inactive Publication Date: 2020-12-04
浙江五龙新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the color of aliphatic admixture is reddish, it will affect the appearance of concrete

Method used

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  • Modified additive suitable for machine-made sand pipe pile concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Take by weighing 58.15% of clear water, 40.0% of polycarboxylate water reducer, 1.5% of hydroxypropyl methylcellulose by mass, and 0.05% of polyether defoamer by mass, respectively Put it into a beaker, add it while stirring, put all the materials in order, and stir evenly to get an admixture for machine-made sand to improve the performance of concrete in the application of pipe pile concrete.

Embodiment 2

[0015] Take by weight 56.65% of clear water, 40.0% of polycarboxylate water reducer, 3% of hydroxypropyl methylcellulose, and 0.05% of polyether defoamer by mass, respectively Put it into a beaker, add it while stirring, put all the materials in order, and stir evenly to get an admixture for machine-made sand to improve the performance of concrete in the application of pipe pile concrete.

Embodiment 3

[0017] Take by weighing 53.45% of clear water, 45.0% of polycarboxylate water reducer, 1.5% of hydroxypropyl methylcellulose by mass, and 0.05% of polyether defoamer by mass, respectively Put it into a beaker, add it while stirring, put all the materials in order, and stir evenly to get an admixture for machine-made sand to improve the performance of concrete in the application of pipe pile concrete.

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Abstract

The invention provides a modified additive suitable for machine-made sand pipe pile concrete, which is composed of the following components in percentage by mass: a polycarboxylate superplasticizer, apolyether defoamer, a thickener and water. The modified additive provided by the invention has the effects of improving workability such as workability, cohesiveness and water retention of concrete,reducing slump time loss and the like; an additive mother liquor can enable concrete to be good in slump retaining performance, and the strength is higher than that of common concrete; the modified additive can adjust the viscosity of concrete, so that the fresh concrete has good system stability, the phenomena of material collapse, slurry hanging and the like caused by poor system stability of the fresh concrete are reduced, and the surface color difference of the concrete and the appearance of the concrete are improved; on the premise that it is guaranteed that machine-made sand pipe pile concrete is easy to construct and the strength is not reduced, the using amount of concrete glue materials is reduced by 5%-10%, and machine-made sand pipe pile concrete mixtures are prevented from collapsing and hanging slurry.

Description

technical field [0001] The invention relates to a modified admixture suitable for machine-made sand pipe pile concrete, which can improve the workability, cohesion, water retention and other workability of the concrete. Background technique [0002] Entering the era, with the advancement of building science, green environmental protection and high-strength high-performance concrete are the new development direction of technology, which urgently requires the development of matching green environmental protection high-performance admixtures. As a kind of high-strength and high-performance concrete, pipe pile concrete is expected to maintain its leading position in the next 20 years. There are many kinds of superplasticizers used to prepare high-strength concrete in the production of pipe piles, and naphthalene series in general aliphatic and sulfonate series are more common. And what the present invention uses is polycarboxylate admixture, is a kind of admixture of novel gree...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C04B24/38
CPCC04B40/0039C04B22/002C04B2103/302C04B24/383C04B24/32
Inventor高卫锋沈鹏程刘平沈中华
Owner浙江五龙新材股份有限公司