Preparation method of permeable brick by using phosphorous slag

Abstract

The present invention discloses a preparation method of permeable brick by using phosphorous slag, which uses 50 to 150 parts of cement, 15 to 30 parts of water, 140 to 200 parts of bonded silica sand and 140 to 200 parts of phosphorous slag as raw materials, the permeable brick is prepared by the process of vibration, pressure forming and normal temperature curing or steam curing as that of conventional cement brick. The cement is ordinary portland cement with the strength higher than P.O 32.5, portland cement with the strength higher than P.I 32.5 or composite slag cement with the strength higher than P.C 32.5. The partical size of the bonded silica sand is controlled to be between 2.5 mm to 7 mm, the partical size of the phosphorous slag is controlled to be between 0.6 mm to 2 mm. Normal temperature curing is used at the temperature between 5 to 45 DEG C for 1 to 28 days, or steam curing is used at the temperature between 60 t0 120 DEG C for 1 to 2 days. The performance index of the permeable brick prepared by the method meets the requirement in <permeable brick> JC/T945-2005. The permeable brick has good water permeability, mechanical property and abrasive resistance, is applicable in building field widely and reduces the waste and pollution caused by phosphorous slag.

Description

technical field [0001] The invention relates to a block building component, and also to concrete, in particular to a concrete brick produced by using yellow phosphorus electric furnace slag (abbreviated as phosphorous slag). Background technique [0002] At present, there are mainly two types of permeable bricks for roads: ceramic and concrete. Ceramic permeable bricks have the advantages of high strength and good wear resistance, but this product needs high temperature sintering, which has the disadvantages of high energy consumption and low water permeability coefficient. . Concrete pavement bricks adopt the non-fired process, which has the advantages of low energy consumption and good water permeability coefficient. At present, there are patents for building materials such as permeable concrete pavement bricks, such as CN2871620 "Permeable Concrete Pavement Brick", CN2732807 "A Permeable Concrete Pavement Brick", CN1651679 "Environmental Protection Permeable Brick Struct...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for producing permeable bricks using phosphorus slag, aiming to solve the problems of high cost and high energy consumption in the production of existing ceramic permeable bricks and concrete permeable bricks by secondary distribution, and the water permeability of cement permeable bricks. Compressive strength can not be taken into account and other issues