A light-weight permeable flexible rubber pavement brick and its preparation method

Abstract

The invention provides a lightweight water-permeable flexible rubber pavement brick and a preparation method thereof. The raw materials and their contents by weight are as follows: 900-1200 parts of waste rubber particles, 300-420 parts of cement, 25-50 parts of silica fume, and cellulose ether 0.6-1.2 parts, water reducing agent 4-6 parts, water-soluble epoxy resin 2-3.5 parts, water 120-150 parts; the method is as follows: mix cement, silica fume and cellulose ether evenly in proportion, then add waste rubber granules, continue to stir to make it evenly mixed; mix 80% of the water with all the water reducing agent and stir evenly, then add to the above solid mixture, after mixing evenly; pour all the water-soluble epoxy resin into the remaining 20% water, then add it to the above mixture, stir and mix; put it into a mold, static pressure molding; curing, demoulding. The pavement brick of the invention has high compressive strength, high water permeability, light weight, good flexibility and comfort, and good noise reduction and sound absorption performance.

Description

【Technical field】 [0001] The invention relates to the field of composite pavement materials, in particular to a lightweight water-permeable flexible rubber pavement brick using waste rubber particles as aggregates and a preparation method thereof. 【Background technique】 [0002] Waste rubber is a kind of thermosetting polymer plastic, which is difficult to degrade under natural conditions. If it is discarded on the surface or buried underground, it will not rot and degrade for more than ten years. The main source of waste rubber is waste tires. According to statistics, as of 2015, the amount of waste tires in my country reached more than 50 million pieces, and only about 1.4% of the total was disposed of. The "black pollution" formed by waste tires is putting more and more pressure on my country's environmental protection work. At present, the main utilization methods of waste rubber are direct utilization, production of reclaimed rubber and rubber powder, etc., but the ove...

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Problems solved by technology

[0003] Traditional permeable bricks mainly made of natural coarse aggregate are heavy in weight, hard in texture, poor in foot feel, and poor in sound absorption and noise reduction. Rubber permeable concrete is a new field. At present, there are few related researches. The relatively mature research results are It was obtained by Mehmet Gesoglu and Erhan Güneyisi of Turkey, who used 10-12.5mm single particle size coarse aggregate and Portland cement with a strength grade of 42.5R, and added different fineness and dosage to it. 10% and 20% tire strips, rubber powder and fine rubber powder, the obtained rubber concrete has a lower strength, the lowest is only 6.45MPa; Domestic Taiyuan University of Technology, North China University of Water Resources and Hydropower, Shenyang University, Tianjin University, A few units such as Jiangsu Xianda Construction Group Co., Ltd. have carried out research on rubber permeable materials, but there are the following defects: 1. The compressive strength is low. In most studies, when the rubber particle content exceeds a certain proportion, the strength drops significantly. Some, when the dosage is 30%, the compressive strength is only about 10MPa; 2. The waste rate is low. At present, all rubber permeable materials are mainly natural coarse aggregate, and the amount of waste rubber particles is low. It even needs to be mixed with fine aggregates such as sand, which will affect the final water permeability of the product; 3. The weight is relatively large. Since the existing research is still based on natural coarse aggregate, the product has a large weight and the foot feels Hard, noise reduction and sound absorption performance is not outstanding enough

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