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Pervious concrete for roads and production process thereof

A permeable concrete and road technology, applied in the field of concrete, can solve the problems of large porosity of porous concrete, reduced compressive strength, and reduced service life of concrete, and achieve the effect of improving water permeability, increasing strength, and reasonable proportioning

Active Publication Date: 2018-06-01
广西万鑫环保建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the common permeable concrete at present is to use the large pores and porous properties of concrete to achieve the purpose of water permeability, but the large porosity of porous concrete causes the reduction of its compressive strength and reduces the service life of concrete.

Method used

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  • Pervious concrete for roads and production process thereof
  • Pervious concrete for roads and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A permeable concrete for roads, comprising the following raw materials in parts by weight: 55 parts of cement, 200 parts of limestone gravel, 80 parts of yellow sand, 80 parts of quartz sand, 30 parts of water, 14 parts of fly ash, 14 parts of silica fume, 6-hydroxy - 3 parts of sodium naphthalenesulfonate, 15 parts of nano-silica dispersion, 6 parts of waterproofing agent, 1 part of p-toluenesulfonyl hydrazide, 1 part of azodicarbonamide, SiO 2 1 part of modified 4,4'-oxobisbenzenesulfonyl hydrazide.

[0062] The waterproofing agent is a mixture of perfluorohexanesulfonate potassium, isopropyl myristate, and water glass polyurethane composite material, and the perfluorohexane sulfonate potassium, isopropyl myristate, water glass polyurethane composite material The mass ratio is 1:1:1.

[0063] The preparation method of the water glass polyurethane composite material is as follows: firstly weigh water glass, 4,4'-diphenylmethane diisocyanate, polytetrahydrofuran diol, ...

Embodiment 2

[0072] It is basically the same as Example 1, the difference is only that: the water repellent is a mixture of potassium perfluorohexanesulfonate and isopropyl myristate, and the mixture of potassium perfluorohexanesulfonate and isopropyl myristate The mass ratio is 1:1.

Embodiment 3

[0074] Substantially the same as Example 1, the difference is only that: the waterproofing agent is a mixture of isopropyl myristate and water glass polyurethane composite material, and the mass ratio of said isopropyl myristate and water glass polyurethane composite material is 1 :1.

[0075] The preparation method of the water glass polyurethane composite material is as follows: firstly weigh water glass, 4,4'-diphenylmethane diisocyanate, polyether polyol, di Dibutyltin laurate, epoxidized soybean oil acrylate and diisononyl cyclohexane-1,2-dicarboxylate, then water glass, polytetrahydrofuran diol and dibutyltin dilaurate at 40°C and 200r / min Stir at low temperature for 30 minutes, and mix well to obtain component A; then 4,4' diphenylmethane diisocyanate, epoxidized soy acrylate, cyclohexane-1,2-diisononyl dicarboxylate at 40°C 200r / min under the condition of stirring for 25min to obtain component B; keeping the temperature and rotating speed constant, mix components A an...

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Abstract

The invention discloses pervious concrete for roads and a production process thereof. The pervious concrete is prepared from the following raw materials in parts by weight: 45 to 60 parts of cement, 140 to 220 parts of coarse aggregate, 100 to 165 parts of ultra-fine sand, 20 to 35 parts of water, 16 to 30 parts of admixture, 2 to 4 parts of superplasticizer, 6 to 20 parts of nano-silica dispersion liquid, 3 to 7 parts of water repellent, and 2 to 5 parts of anti-cracking expansive agent. The pervious concrete for the roads provided by the invention is not easy to crack and has high compressive strength, and the production process adopted by the invention improves strength of the concrete. Therefore, the pervious concrete for the roads obtained by the invention has the advantages of high water permeability, high bearing capacity and long service life, easy maintenance and the like.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a permeable concrete for roads and a production process thereof. Background technique [0002] More and more practice shows that the water entering into the pavement structure is the main cause of causing or accelerating the damage of pavement structure. In this regard, relevant experts have conducted a lot of research, trying to reduce or even eliminate the water damage of the road surface by rationally designing the drainage base material and the internal drainage system, so as to improve the performance of the road surface and prolong its service life. Permeable concrete is a new type of drainage base material developed in this environment. [0003] Permeable concrete is also called porous concrete, sand-free concrete, and permeable floor. It is a kind of porous lightweight concrete made by mixing aggregate, cement and water. It only contains a small amount of fine aggregat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00284C04B2201/50C04B14/28C04B14/068C04B14/06C04B18/08C04B18/146C04B24/20C04B24/125C04B24/16C04B24/085C04B12/04C04B24/282
Inventor 肖彬
Owner 广西万鑫环保建材有限公司
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