Preparation method of permeable concrete

A technology of permeable concrete and diatomite, applied in ceramic products, physical treatment, textiles and papermaking, etc., can solve the problems of low freeze-thaw resistance, poor workability of concrete, and inability to meet the requirements of drainage.

Active Publication Date: 2021-05-21
吉林市北润混凝土有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing permeable concrete has poor workability, uneven pore distribution, low strength, low freeze-thaw resistance, easy freeze-thaw damage, low water permeability coefficient, and cannot meet the requirements of laying high-performance pavements due to the reasons of materials and preparation processes. , and cannot meet the drainage requirements in the rainy season, which affects the use and promotion of permeable concrete products

Method used

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  • Preparation method of permeable concrete

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of permeable concrete, comprising the following steps:

[0024] Step 1. Add 20 parts of nano-silica, 25 parts of hydroxypropyl methylcellulose, 20 parts of water reducer, 15 parts of dispersant, 12 parts of air-entraining agent, and 10 parts of early strength agent into the mixer in parts by weight. , 200 parts of water, stir and mix evenly;

[0025] Step 2. Send 1500 parts of gravel, 350 parts of cement, 80 parts of fly ash, 120 parts of polymer hollow reinforcing fiber, 50 parts of diatomaceous earth, and 10 parts of silica fume to the mixer, and stir at a stirring speed of 120r / min Mix evenly to obtain permeable concrete;

[0026] Wherein, the preparation method of the polymer hollow reinforcing fiber is as follows: preparing polymer solution I with a concentration of 6wt% and polymer solution II with a concentration of 8wt%; using polymer solution I as the core layer solution, and using polymer solution II as Shell solution, inject the core so...

Embodiment 2

[0032] A preparation method of permeable concrete, comprising the following steps:

[0033] Step 1. Add 15 parts of nano-silica, 20 parts of hydroxypropyl methylcellulose, 18 parts of water reducer, 12 parts of dispersant, 10 parts of air-entraining agent, and 8 parts of early-strength agent into the mixer in parts by weight. , 180 parts of water, stir and mix evenly;

[0034] Step 2. Send 1600 parts of gravel, 400 parts of cement, 75 parts of fly ash, 100 parts of polymer hollow reinforcing fiber, 45 parts of diatomaceous earth, and 10 parts of silica fume to the mixer, and stir at a stirring speed of 120r / min Mix evenly to obtain permeable concrete;

[0035]Wherein, the preparation method of the polymer hollow reinforcing fiber is: preparing a polymer solution I with a concentration of 5wt% and a polymer solution II with a concentration of 7wt%; using the polymer solution I as the core layer solution, and using the polymer solution II as the Shell solution, inject the core...

Embodiment 3

[0041] A preparation method of permeable concrete, comprising the following steps:

[0042] Step 1. Add 20 parts of nano-silica, 25 parts of hydroxypropyl methylcellulose, 20 parts of water reducer, 15 parts of dispersant, 12 parts of air-entraining agent, and 10 parts of early strength agent into the mixer in parts by weight. , 200 parts of water, stir and mix evenly;

[0043] Step 2. Send 1500 parts of gravel, 350 parts of cement, 80 parts of fly ash, 120 parts of polymer hollow reinforcing fiber, 50 parts of diatomite-loaded chitosan, and 10 parts of silica fume to the mixer at 120r / min Stir and mix evenly at a certain stirring speed to obtain permeable concrete;

[0044] Wherein, the preparation method of the polymer hollow reinforcing fiber is as follows: preparing polymer solution I with a concentration of 6wt% and polymer solution II with a concentration of 8wt%; using polymer solution I as the core layer solution, and using polymer solution II as Shell solution, inje...

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Abstract

The invention discloses a preparation method of permeable concrete, which comprises: adding 10-20 parts of nano-silicon dioxide, 15-25 parts of hydroxypropyl methylcellulose and 15-20 parts of water reducing agent into a mixer in parts by weight , 10-15 parts of dispersant, 10-12 parts of air-entraining agent, 8-10 parts of early strength agent, 150-250 parts of water, stir and mix evenly; mix 1200-1800 parts of gravel, 250-450 parts of cement, 50- Send 80 parts of fly ash, 80-120 parts of polymer hollow reinforcing fiber, 30-50 parts of diatomaceous earth-loaded chitosan, and 5-10 parts of silica fume to the mixer, and stir and mix at a stirring speed of 100-120r / min Evenly, permeable concrete is obtained; the permeable concrete prepared by the present invention takes crushed stone as the main aggregate, and adds fly ash, cement, polymer hollow reinforcing fiber, diatomite-loaded chitosan, and other additives to prepare by stirring, The prepared permeable concrete has excellent compressive and flexural properties and good water permeability.

Description

technical field [0001] The invention relates to a method for preparing concrete, in particular to a method for preparing permeable concrete. Background technique [0002] With the development of concrete technology, maintaining ecological balance and realizing sustainable development are also the pursuit goals in the field of building materials. Permeable concrete products are also called porous concrete, or drainage concrete. As an environmentally friendly and ecological road material, it has water permeability, can quickly eliminate water accumulation in roads and squares, and reduce the burden of urban drainage; it can quickly infiltrate rainwater into the ground, replenish groundwater, maintain soil moisture, and maintain the ecology of groundwater and soil Balanced; in terms of heat absorption and heat storage functions, it is close to the ground covered by natural vegetation, regulates the temperature and humidity of urban spaces, and alleviates the urban heat island ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B38/08C04B16/06D01F8/10D01F8/06D01F8/14D06M10/02D06M11/76D06M11/71D06M101/18D06M101/20D06M101/32
CPCC04B16/0683C04B28/00C04B2111/00284C04B2111/0075C04B2201/50D01F8/06D01F8/10D01F8/14D06M10/02D06M10/025D06M11/71D06M11/76D06M2101/18D06M2101/20D06M2101/32C04B14/062C04B24/383C04B14/02C04B18/08C04B14/08C04B18/146C04B2103/302C04B24/122C04B24/20C04B24/128C04B38/0074C04B24/38
Inventor 赵锐
Owner 吉林市北润混凝土有限责任公司
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