Pervious concrete self-crystallization multi-lacuna gel material, and preparation method and application thereof

A technology of permeable concrete and gel material, applied in the field of concrete admixtures, can solve the problems of poor strength of permeable concrete, difficult to control construction, poor water permeability, etc., and achieve the effects of improving water permeability, overcoming difficult control, and improving strength

Active Publication Date: 2016-07-13
万华节能(烟台)环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the current defects of poor strength, poor water permeability and difficult construction control of permeable concrete, the present invention proposes a self-crystalli

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A kind of permeable concrete self-crystallization porous gel material, the composition of raw materials by weight: 80 parts of R52.5 portland cement; 5 parts of alum stone expansion agent; 5 parts of composite crystallization agent composed of 1:0.5; 2 parts of recycled rubber powder passed through a 120 mesh sieve; 1 part of lignin water reducer.

[0043] 1) The alumite expansion agent, composite crystallization agent, and lignin water reducer are mechanically micro-compounded in a vertical rotor mill, so that the crystallization agent is embedded in the micro-expansion agent to obtain nano-sized particles with a particle size of less than 100 nanometers. fine particles;

[0044] 2) Add the fine particles obtained in step 1), R52.5 Portland cement, and regenerated rubber powder passed through a 120-mesh sieve into a high-speed mixer, and disperse at a high speed of 1000-1500rpm for 30 minutes to obtain permeable concrete self-crystallizing porous concrete glue materia...

Embodiment 2

[0048] A kind of permeable concrete self-crystallization porous gel material, the composition of raw materials by weight: 85 parts of R62.5 portland cement; 6 parts of U-shaped expansion agent; 3 parts of composite crystallization agent composed of 2:1; 2 parts of recycled plastic powder passed through a 120 mesh sieve; 0.5 part of aliphatic water reducer.

[0049] 1) The U-shaped expansion agent, composite crystallization agent, and aliphatic water reducer are mechanically micro-compounded in the airflow vortex mill, so that the crystallization agent is embedded in the micro-expansion agent to obtain nano-sized particles with a particle size of less than 100 nanometers. fine particles;

[0050] 2) Add the fine particles obtained in step 1), R62.5 Portland cement, and recycled plastic powder passed through a 120-mesh sieve into a high-speed mixer, and disperse at a high speed of 1000-1500rpm for 45 to obtain permeable concrete self-crystallizing porous concrete glue material....

Embodiment 3

[0054] A permeable concrete self-crystallizing porous gel material, the composition of raw materials by weight: 90 parts of R42.5 Portland cement; 8 parts of CSA expansion agent; aluminum dihydrogen phosphate, citric acid, and calcium fluoride in a mass ratio of 5:2 : 4 parts of composite crystallization agent with 0.5 composition; 5 parts of recycled asphalt powder through 120 mesh sieve; 1 part of melamine water reducer.

[0055] 1) The CSA expansion agent, composite crystallization agent, and melamine superplasticizer are mechanically miniaturized and compounded in the counter-rotor mill, so that the crystallization agent is embedded in the micro-expansion agent to obtain nano-sized particles with a particle size of less than 100 nanometers. fine particles;

[0056] 2) Add the fine particles obtained in step 1), R42.5 Portland cement, and recycled asphalt powder passed through a 120-mesh sieve into a high-speed mixer, and disperse at a high speed of 1000-1500rpm for 40 minu...

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PUM

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Abstract

The invention provides a pervious concrete self-crystallization multi-lacuna gel material, which adopts Portland cement as a main body, and forms the gel material with automatic expansion and shrinkage functions through compositing a micro-expanding agent, a crystallizing agent and fine elastic colloidal particles. When being applied to pervious concrete, the gel material is self-crystallized to form multi-lacuna ettringite with flexibility, and not only has favorable adhesion with coarse and fine aggregates, but also forms multi-lacuna pervious channels. When being used, the self-crystallization gel material and porous fine aggregates are used cooperatively, and micro pores of the porous fine aggregates cannot be blocked. Therefore, a large amount of porous fine aggregates can be used in the pervious concrete, the adhesion interface area between the coarse aggregates is increased, and the strength of the pervious concrete is improved. The pervious concrete self-crystallization multi-lacuna gel material can be applied to concretes for high-load roads such as urban roads and highway roads.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a permeable concrete self-crystallizing porous gel material and its preparation method and application. Background technique [0002] The surface of modern cities is constantly covered by reinforced concrete buildings and impermeable roads. Compared with natural soil, ordinary concrete pavement lacks the ability to absorb heat and infiltrate rainwater, which brings a series of problems. For example, the rainwater that can infiltrate the surface is significantly reduced, causing the groundwater level to drop; impermeable roads are difficult to exchange heat and humidity with the air, resulting in the "heat island phenomenon" and worsening the climate; at the same time, when the rainfall is concentrated in a short period of time, Because a large amount of rainwater can only be discharged into rivers through underground drainage facilities, the burden on drainage facili...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B40/0039C04B7/02C04B22/142C04B22/16C04B24/06C04B22/126C04B18/22C04B24/18
Inventor 陈庆曾军堂
Owner 万华节能(烟台)环保科技有限公司
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