Sludge haycite water-permeable brick and preparation method thereof

Abstract

The invention discloses a sludge haycite water-permeable brick and a preparation method thereof. The sludge haycite water-permeable brick comprises a surface layer and a base layer, and is characterized in that the surface layer is prepared from, by weight, 1 part of white cement, 0.05 part of ferric oxide, 1-2 parts of haycite sand of 1 mm to 3 mm, 0.2-0.5 part of yellow sand, 0.02-0.04 part of water reducer and 0.3-0.4 part of water; the base layer is prepared from 1 part of 42.5-grade Portland cement, 0-2 parts of haycite sand with the grain size being 3 mm to 5 mm, 0-2 parts of the haycite with the grain size being 1 mm to 3 mm, 0.2-0.5 part of yellow sand, 0.02-0.04 part of water reducer and 0.3-0.4 part of water. The preparation process comprises the steps that the sludge haycite is crushed and screened, the raw materials of the surface layer and the base layer are weighed in proportion, the raw materials are mixed and stirred, and a brick body is formed and maintained. The sludge haycite water-permeable brick has the advantages of being low in cost, high in strength and good in permeability performance, preventing sliding, resisting wear and the like.

Description

technical field [0001] The invention relates to a permeable brick, in particular to a sludge ceramsite permeable brick and a preparation method thereof. Background technique [0002] In recent years, the problem of urban waterlogging has become increasingly prominent, and permeable bricks with water permeability are widely used in the construction of sponge cities. At present, the types of permeable bricks mainly include concrete permeable bricks, ecological sand-based permeable bricks, steel slag permeable bricks, polymer fiber concrete permeable bricks, colored stone epoxy permeable bricks, etc., but the common problems are: high production cost, Low strength or poor water permeability. In addition, some studies have used sludge, clay, etc. to make permeable bricks after high-temperature calcination, but the compressive strength does not meet the national standard. [0003] Ceramsite is a light aggregate with a hard ceramic and enamel shell on the outside and a porous in...

AI Technical Summary

Problems solved by technology

At present, the types of permeable bricks mainly include concrete permeable bricks, ecological sand-based permeable bricks, steel slag permeable bricks, polymer fiber concrete permeable bricks, colored stone epoxy permeable bricks, etc., but the common problems are: high production cost, Low strength or poor water permeability

In recent years, the technology of using sludge, silt, construction residue, fly ash and other materials to mix into balls in a certain proportion to make ceramsite has matured, but there is no report on using sludge ceramsite to make permeable bricks.