Pervious concrete for pavements and preparation process thereof

A permeable concrete and cement technology, applied in the field of concrete, can solve the problems of large deformation, short service life, low strength of permeable concrete, etc., and achieve the effect of prolonging service life, improving early strength and middle and late strength, and good compression resistance

Active Publication Date: 2021-02-09
武汉昌华汇鑫建材有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problems of low strength, large deformation and short service life of permeable concrete in the above-mentioned related technologies, the application provides a permeable concrete for pavement and its preparation process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pervious concrete for pavements and preparation process thereof
  • Pervious concrete for pavements and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0036] A modified bentonite, prepared by the following method:

[0037] a. bentonite pulverization liquid preparation: pulverize bentonite through a 120-mesh sieve, add water with 5 times the quality of itself, and stir to obtain bentonite solution;

[0038] b. Preparation of modified solution: crush sodium titanate and ash powder at a mass ratio of 1:1, pass through a 100-mesh sieve, and soak in hydrogen peroxide at 60°C whose weight is three times its own weight for 3 hours to obtain modified liquid;

[0039] c. Bentonite modification: add the bentonite solution obtained in step a to the modified liquid obtained in step b, stir at 50°C for 1 hour, then add dehydrated castor oil and ultrasonically disperse at 50°C for 30 minutes, then Stir in an environment of ℃ until it is completely dry to obtain modified bentonite.

Embodiment 1

[0041] A kind of permeable concrete for pavement, its component content is shown in Table 1.

[0042] Table 1 embodiment 1-5 component content table

[0043]

[0044] Among them, the particle size range of gravel is 15-25mm.

[0045] Bentonite is a powder whose particle size meets a 120-mesh sieve.

[0046] The mineral admixture is mineral powder.

[0047] The early strengthening agent is triethanolamine.

[0048] This embodiment also provides the preparation process of the above-mentioned permeable concrete for pavement, including the following steps: S1. Powder premixing: uniformly mix cement, mineral admixtures, and bentonite to obtain premixed powder;

[0049] S2. Aggregate and powder blending: Add steel fibers to the gravel, stir and disperse evenly, then add the premixed powder obtained in step S1, disperse evenly, and obtain a blend;

[0050] S3. Concrete mixing: Add water, water reducer, and early strength agent to the blend obtained in step S2, stir and dispers...

Embodiment 2

[0052]A kind of permeable concrete for pavement, its component content is shown in Table 1.

[0053] Among them, the particle size range of gravel is 5-10mm.

[0054] Bentonite is a powder whose particle size meets a 120-mesh sieve.

[0055] The mineral admixture is a mixture of silica fume and ultrafine metakaolin at a mass ratio of 2:1.

[0056] The early strengthening agent is calcium formate.

[0057] This embodiment also provides the preparation process of the above-mentioned permeable concrete for pavement, including the following steps: S1. Powder premixing: uniformly mix cement, mineral admixtures, bentonite, and expanded perlite to obtain premixed powder; S2. Aggregate and powder blending: Add steel fibers to the gravel, stir and disperse evenly, then add the premixed powder obtained in step S1, disperse evenly, and obtain a blend;

[0058] S3. Concrete mixing: Add water, water reducer, and early strength agent to the blend obtained in step S2, stir and disperse ev...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses pervious concrete for a pavement and a preparation process of the pervious concrete, and relates to the field of concrete, and the pervious concrete for the pavement is prepared from the following components in parts by weight: 1300-1500 parts of gravel, 400-500 parts of cement, 80-120 parts of mineral admixture, 30-50 parts of bentonite, 25-50 parts of steel fiber, 0.8-6.2parts of a water reducing agent, 1-1.5 parts of an early strength agent and 110-140 parts of water. The preparation process of the pervious concrete for the pavement comprises the following steps: S1, premixing the powder, S2, blending the aggregate and the powder, and S3, mixing the concrete. The water permeable brick has the advantages of being good in water permeability, high in strength, notprone to deformation and long in service life.

Description

technical field [0001] The application relates to the field of concrete, more specifically, it relates to a permeable concrete for pavement and its preparation process. Background technique [0002] With the development of economy and the acceleration of urban construction, the surface of modern cities is gradually covered by buildings and concrete pavement. Convenient transportation facilities and paved roads have brought great convenience to people's travel, but these impermeable roads have also brought many negative impacts on the ecological environment of the city. Because the concrete pavement lacks water permeability and air permeability, rainwater cannot penetrate into the ground, which makes it difficult for surface plants to grow normally due to severe water shortage; it is difficult for airtight pavement to exchange heat and moisture with the air, and it lacks the control of urban surface temperature. , The ability to adjust humidity, resulting in the so-called "h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B28/00C04B14/10C04B20/02
CPCC04B28/00C04B14/104C04B20/023C04B2201/50C04B2111/0075C04B2111/00284C04B14/02C04B14/48C04B22/002C04B14/005C04B24/122C04B2103/302C04B14/106C04B18/146C04B24/04C04B14/185C04B18/141C04B24/126
Inventor 韩浩张田源程松熊惕
Owner 武汉昌华汇鑫建材有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap