Special reinforcing agent for ready-mixed pervious concrete and preparation method thereof

A permeable concrete and reinforcing agent technology, which is applied in the field of auxiliary agents for building materials, can solve the problems of large dust and noise pollution, reduce the durability of the road surface, and uneven mixing, so as to improve the impact and wear resistance and delay the slump The effect of loss of degree and enhancement of bending and tensile strength

Active Publication Date: 2018-11-06
武汉源锦建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing pervious concrete technology changes the structure of the concrete due to the pores between the stone aggregates, and is prone to shrinkage and fracture in the later stage. At the same time, the flexural strength of the permeable concrete is not enough, and it is also prone to fracture, which affects the mechanical properties of the concrete. Persistence
On the other hand, the low construction efficiency of ordinary permeable concrete, uneven mixing between aggregates, large dust and noise pollution during production, and inconvenient production of mixing stations seriously restrict the development of permeable concrete. Therefore, the development of a An admixture that can not only solve the shrinkage and fracture of permeable concrete, but also be ready-mixed is an urgent problem to be solved at present.
[0003]

Method used

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  • Special reinforcing agent for ready-mixed pervious concrete and preparation method thereof
  • Special reinforcing agent for ready-mixed pervious concrete and preparation method thereof
  • Special reinforcing agent for ready-mixed pervious concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A special reinforcing agent for ready-mixed permeable concrete, mainly composed of the following raw materials in mass percentage

[0032]

[0033]

[0034] The adhesive component is formed by cross-linking white carbon black and sodium lignosulfonate in a mass ratio of 3:2 through A151 silane coupling agent.

[0035] (1), first add the adhesive component, anti-cracking component, and anti-bending component into the mixing mixer at a mass ratio of 19:42:22, and stir for 10-15 minutes; (2), add to the mixture in step (1) According to the mass ratio of 3:14, the thickening component and the water reducing component are continuously stirred for 15-20 minutes, and then the material is discharged to obtain a special reinforcing agent for ready-mixed permeable concrete. Among them, the water-reducing component is naphthalene-based water-reducing agent powder, the anti-bending component is polypropylene fiber, and the anti-cracking component is calcium high-performance e...

Embodiment 2

[0037] A special reinforcing agent for ready-mixed permeable concrete, mainly composed of the following raw materials in mass percentage

[0038]

[0039] The adhesive component is formed by cross-linking white carbon black and sodium lignosulfonate at a mass ratio of 4:2 through A151 silane coupling agent.

[0040] (1), first add the adhesive component, anti-cracking component, and anti-bending component into the mixing mixer at a mass ratio of 19:42:22, and stir for 10-15 minutes; (2), add to the mixture in step (1) According to the mass ratio of 3:14, the thickening component and the water reducing component are continuously stirred for 15-20 minutes, and then the material is discharged to obtain a special reinforcing agent for ready-mixed permeable concrete. The water-reducing component is naphthalene-based water-reducing agent powder, and the anti-bending component is nano-CaCO 3 , the anti-cracking component is a magnesium oxide expansion agent, and the 7d limit expa...

Embodiment 3

[0042] A special reinforcing agent for ready-mixed permeable concrete, mainly composed of the following raw materials in mass percentage

[0043]

[0044]The adhesive component is formed by cross-linking white carbon black and sodium lignosulfonate at a mass ratio of 5:2 through A151 silane coupling agent.

[0045] (1), first add the adhesive component, anti-cracking component, and anti-bending component into the mixing mixer at a mass ratio of 19:42:22, and stir for 10-15 minutes; (2), add to the mixture in step (1) According to the mass ratio of 3:14, the thickening component and the water reducing component are continuously stirred for 15-20 minutes, and then the material is discharged to obtain a special reinforcing agent for ready-mixed permeable concrete. The water-reducing component is polycarboxylate superplasticizer powder, and the anti-bending component is nano-SiO 2 , the anti-cracking component is a magnesium oxide expansion agent, and the 7d limit expansion ra...

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PUM

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Abstract

The invention provides a special reinforcing agent for ready-mixed pervious concrete and a preparation method thereof. The special reinforcing agent for the ready-mixed pervious concrete includes thefollowing raw materials by mass: 40-45% of anti-cracking component, 20-25% of flexural component, 2%-4% of thickening component, 19-24% of adhesive component and 10-15% of water reduction component. The dosage of the special reinforcing agent in the pervious concrete is 2-3% of the mass of a cementing material. The reinforcing agent can not only effectively prevent the late shrinkage of the pervious concrete and reduce the stress cracking, but also significantly improve the flexural resistance and the frost resistance of the pervious concrete, ensures the mechanical property and the durabilityof pervious concrete pavements, and enhances the water retention and the slump retention of the previous concrete to meet the construction requirements of the ready-mixed concrete. The reinforcing agent is beneficial to prepare the premixed medium and high strength pervious concrete.

Description

technical field [0001] The invention belongs to the field of auxiliary agents for building materials, and in particular relates to a reinforcing agent for ready-mixed permeable concrete and a preparation method thereof. Background technique [0002] With the rise of "sponge city" construction, the permeable concrete made of permeable concrete admixture has good compressive strength and good water permeability, which solves the environmental protection of the city well, improves the function of the urban ecosystem and reduces the urban The occurrence of flood disasters. The existing pervious concrete technology changes the structure of the concrete due to the pores between the stone aggregates, and is prone to shrinkage and fracture in the later stage. At the same time, the flexural strength of the permeable concrete is not enough, and it is also prone to fracture, which affects the mechanical properties of the concrete. Persistence. On the other hand, the low construction ...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B103/44C04B103/60C04B103/67
CPCC04B40/0039C04B2103/44C04B2103/60C04B2103/67C04B14/06C04B24/18C04B24/42C04B24/226C04B16/0633C04B2103/0068C04B24/383C04B18/24C04B14/28C04B20/008C04B22/066C04B2103/302C04B14/062
Inventor 汪源侯维红丁蓓纪宪坤
Owner 武汉源锦建材科技有限公司
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