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Water-permeable concrete produced by using solid-state waste, and preparation method thereof

A technology of permeable concrete and waste, which is applied in the field of solid waste recycling and utilization, can solve the problems of low concrete strength, wear resistance, durability, low porosity of permeable concrete, and poor activation of activity, etc., to improve the early stage And later intensity, alleviate the effect of heat island effect, increase the effect of traffic safety

Inactive Publication Date: 2016-11-16
SHANDONG DAYUAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the aggregate strength and interfacial cohesion, the effect can be improved by increasing the amount of cement and other cementitious materials, but the permeable concrete produced has low porosity and poor water permeability.
At the same time, relying solely on recycled aggregates, its activity cannot be better stimulated, and the concrete's low strength, wear resistance, and durability are not as good as the effects of cement alone
At the same time, the interface strength between cement gelling paste and aggregate is low, which is easy to cause broken

Method used

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  • Water-permeable concrete produced by using solid-state waste, and preparation method thereof
  • Water-permeable concrete produced by using solid-state waste, and preparation method thereof
  • Water-permeable concrete produced by using solid-state waste, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Permeable concrete includes the following components by weight:

[0030] 13 parts of cement; 8 parts of active fine powder admixture; 79 parts of recycled aggregate; 0.5 part of polycarboxylate superplasticizer; 0.6 part of interface binder; 7 parts of water.

[0031] The cement uses P.0 42.5 ordinary Portland cement, which meets the requirements of "General Portland Cement" GB175-2007.

[0032] The water reducing rate of the polycarboxylate water reducing agent is over 30%, which can significantly improve the water reducing effect and improve the workability of concrete.

[0033] The water needs to meet drinking water requirements.

[0034] The recycled aggregate is sorted and crushed by construction waste. The recycled aggregate is the structural aggregate of the permeable concrete. The particle diameter of the coarse aggregate used is 5-16mm, and the particle size is uniform. The performance requirements of the regenerated coarse aggregate and regenerated fine aggr...

Embodiment 2

[0047] Permeable concrete includes the following components by weight:

[0048] 11.5 parts of cement; 8.5 parts of micropowder admixture; 78 parts of recycled aggregate; 0.4 part of polycarboxylate superplasticizer; 0.8 part of interface binder; 6 parts of water.

[0049] The recycled aggregate is sorted and crushed by construction waste. The recycled aggregate is the structural aggregate of permeable concrete. The particle size range of the coarse aggregate used is 5-16mm, and the particle size is uniform. The recycled coarse aggregate and recycled fine aggregate The performance requirements of the aggregate are the same as in Example 1.

[0050] Wherein, the active micropowder admixture is a mixture of fly ash, coal gangue and fluorogypsum, and the index requirements of the active micropowder admixture and interface binder are the same as those in Example 1.

Embodiment 3

[0052] The preparation method of permeable concrete comprises the following steps:

[0053] a) Select raw materials, construction waste is processed into the regenerated aggregate meeting the indicators of Example 1 through sorting, crushing, processing, etc., and industrial waste residues are ground to obtain the active micropowder admixture that meets the indicators of Example 1, and according to the examples 1 part by weight is weighed.

[0054] b) Mix and stir the weighed recycled aggregate, interface adhesive and 50% water for 15 seconds.

[0055] c) Continue to add active fine powder admixture and cement and stir for 15s, then add polycarboxylate superplasticizer and stir for 15s.

[0056] d) Finally, add the remaining 50% of water and stir for 1.5 minutes to obtain the finished permeable concrete.

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Abstract

The present invention discloses a water-permeable concrete produced by using solid-state waste, and a preparation method thereof, wherein the water-permeable concrete comprises, by weight, 11.0-22.0 parts of cement, 6.0-11.0 parts of an active micro-powder admixture, 74.0-80.0 parts of a recycled aggregate, 0.3-0.6 part of a polycarboxylic acid water-reducing agent, 0.3-1.0 part of an interfacial binder, and 3.0-8.0 parts of water. According to the present invention, the strength and the water permeability of the concrete are improved, and the reasonable re-use of the waste is achieved; the preparation method comprises: mixing the recycled aggregate, the interfacial binder and 50% of water, carrying out first stirring, adding the active micro-powder admixture and the cement, carrying out second stirring for 15 s, adding the polycarboxylic acid water-reducing agent, carrying out third stirring, finally adding 50% of the water, and carrying out fourth stirring for 1-3 min; and the slurry easily wrap the aggregates, the adhesion is proper, the workability is easy to ensure, and the strength is high after hardening.

Description

technical field [0001] The invention relates to a recycling of solid waste resources, in particular to a permeable concrete produced by using solid waste and a preparation method thereof. Background technique [0002] Permeable concrete is a porous structure with air permeability and water permeability composed of a series of connected pores and the skeleton of concrete solid parts. Permeable concrete is eco-friendly concrete, which has 15-25% connected porosity compared with traditional concrete, and has excellent air permeability and water permeability. While permeable concrete meets the strength requirements, it also needs to maintain a certain through-hole porosity to meet the water permeability requirements. Permeable concrete can not only meet the requirements of human activities for the use of hardened ground, but also has the ecological advantages of natural lawn and soil ground. It can reduce the urban "heat island effect" and reduce the damage of non-permeable har...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B18/167C04B2103/302C04B18/08C04B18/12C04B18/141C04B18/142C04B24/24C04B24/383C04B22/062C04B18/0445
Inventor 季龙泉亓良树季元升
Owner SHANDONG DAYUAN IND
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