Composite aggregate water-permeable concrete and preparation method thereof

A technology of permeable concrete and concrete, which is applied in ceramic products, other household utensils, applications, etc. It can solve the problems of not being able to wrap aggregates well and cement slurry sinking to the bottom, and achieve good economic benefits, weight reduction, and good corrosion resistance sexual effect

Inactive Publication Date: 2017-11-24
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a composite aggregate permeable concrete and its preparation method, which is prepared by using recycled concrete, pumice, and crushed stones, mainly to solve the large-scale utilization of crushed stones, and simultaneously solve the problem of stacking construction waste. At the same time, The preparation process proposed by the present invention mainly solves the problem of cement slurry sinking to the bottom and cement slurry not being able to wrap the aggregate well, and can also solve the problem of cement slurry sinking to the bottom in the existing preparation process. Improvement, perfectly in line with the current process required for the preparation of lightweight aggregates and aggregates with high water absorption, and a good control of the strength of composite aggregate permeable concrete

Method used

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  • Composite aggregate water-permeable concrete and preparation method thereof

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preparation example Construction

[0028] A method for preparing composite aggregate permeable concrete; it is characterized in that it comprises the following steps:

[0029] Step 1, prepare materials: prepare materials according to the designed ratio of each material;

[0030] Step 2, Pre-configure the aggregate: Mix the crushed stone, pumice, and recycled concrete aggregate evenly;

[0031] Step 3, aggregate improvement treatment: add water to the mixture obtained in step 2, the amount of water is 75% of the water consumption required for the crushed stone and recycled concrete to achieve the required water absorption rate, and perform pre-improvement treatment on the aggregate, Control the amount of additional water should not be too much to make the aggregate moist;

[0032] Step 4, aggregate and gel material mixing: Add the gel material required for environment-friendly composite aggregate concrete to the mixture obtained in step 2 for stirring. The gel material is fly ash and cement, and the mixing is c...

specific Embodiment

[0035] Five kinds of specific embodiments of the present invention are provided below, and the parts by weight of each component of five kinds of specific embodiments are as shown in Table 1,

[0036] Table 1: Components used in each embodiment and their consumption (unit / weight part)

[0037] Example

Water cement ratio

gravel

pumice

recycled concrete

cement

fly ash

water

Superplasticizer

1

0.35

806

169

210

435

109

190

2.2

2

0.27

671

211

263

530

94

168

2.5

3

0.31

448

281

350

540

60

139

2.4

4

0.27

806

169

210

426

107

107

2.0

5

0.31

671

211

263

464

51

119

2.1

[0038] Table 2: Each process intensity of five kinds of embodiments

[0039]

[0040] It can be seen from the above table that the strength of Example 1 is the highest, but the porosity and water permeability coefficient are a...

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Abstract

The invention relates to composite aggregate water-permeable concrete and a preparation method thereof. The composite aggregate water-permeable concrete comprises the following components in parts by weight: 100-200 parts of water, 420-550 parts of cement, 440-900 parts of broken stone, 160-300 parts of pumice stone, 200-360 parts of recycled concrete, 50-110 parts of fly ash and 2.0-2.5 parts of a water reducing agent. Various aggregates are blended, the pumice stone and the recycled concrete replace natural broken stone to a certain proportion, the weight of the water-permeable concrete is reduced, the indexes of the strength and the porosity are standardized, meanwhile, the water permeation speed is increased, the cost is reduced, and stacking of construction wastes is relieved by the recycled concrete.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to a composite aggregate permeable concrete and a preparation method thereof. Background technique [0002] Permeable concrete is a new type of green and environmentally friendly concrete, which has a certain strength and strong water permeability. It is of good significance to reduce the drainage problem of the pavement when used on the pavement. However, the durability of permeable concrete in domestic research is poor. When aggregates are utilized, most of them use gravel, which causes a lot of economic waste. Some use construction waste, but The achieved strength and water permeability are not ideal. In the preparation process, the traditional method of use is mostly the secondary feeding method. At the same time, the problem of cement slurry sinking to the bottom often occurs. The preparation process is not refined enough, and the existing prep...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/00C04B111/40
CPCC04B28/04C04B38/00C04B2111/00284C04B2111/40C04B2201/50C04B18/08C04B14/02C04B14/16C04B18/16C04B2103/302C04B28/02C04B38/0074
Inventor 麻建锁李瑞丰蔡焕琴王丽楠李雪娜李明宇程岚强亚林郭腾张敏
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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