High-strength and high-water-permeation water permeable bricks and preparation technology thereof

Abstract

The invention provides high-strength and high-water-permeation water permeable bricks. Being different from common varieties in the prior art, the water permeable bricks provided by the invention arewater permeable bricks which are prepared by taking large-grain-diameter stones as a base material and matching cement and an enhancing agent according to a specific ratio, have high water permeationperformance and keep high strength. Specifically, the invention provides the water permeable bricks; the water permeable bricks are prepared from a bottom-layer material and a surface-layer material according to the ratio. The water permeable bricks provided by the invention are concrete-based materials; the bottom-layer material is formed by selecting the stones and the cement and adding the enhancing agent; the surface-layer material is formed by selecting white cement, black sand and white sand and adding the enhancing agent. According to the water permeable bricks provided by the invention, the stones, the white and the black sand are put into a material storage yard; the materials with the proper ratio are selected and are blended; then a mixture is conveyed into a molding machine anda surface material machine and then is prepared and molded; then the bricks are conveyed into a subequipment porter through a brick conveying machine and a plate hoisting plate; the molded bricks areconveyed to a nursing kiln by the subequipment porter; after curing is finished, the molded bricks are conveyed to a stacking machine, are conveyed and are packaged into finished products; the finished products enter a finished product storage yard and then are delivered from the factory. Immersed oil is recycled through pallets and then is conveyed to the molding machine to convey the bottom-layer material molded bricks.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a method for making building materials, in particular to a formula of a permeable brick and its manufacturing process, especially to a high-strength and high-permeability permeable brick prepared by using large particle size materials and its manufacturing process. Background technique [0002] In order to realize the coordinated development of urbanization and natural resources and environment, protect the urban water ecosystem, reduce rainwater disasters, and develop rainwater resources, sponge city construction has been proposed as a new urban construction concept. Like a sponge, a sponge city can absorb and store rainwater, recycle it, reduce the pollution of initial large-flow rainwater runoff, and be flexible in the face of natural disasters and environmental changes. The construction of sponge city transforms the traditional "quick discharge" model into an organi...

AI Technical Summary

Problems solved by technology

Although the strength of sintered permeable bricks and resin-based permeable bricks is better than that of cement-based permeable bricks, there is a bottleneck problem that restricts their development: sintered permeable bricks need to be fired at high temperatures, and the sintering temperature is generally 1000 ℃ ~ 1200 ℃, and the energy consumption is high; The fired green body may be deformed and cracked during the cooling process, which will reduce the yield, especially the appearance size error is relatively large, and the production cost is high; resin-based permeable bricks are easy to age under the action of light and heat, especially in the environment. The aging process will be intensified when there is water in the hardened epoxy resin, which will significantly reduce the durability of the permeable brick and shorten the service life

Within a certain range of cement dosage, more cement dosage, high strength, wear resistance, but poor water permeability; less cement dosage, low strength, no wear resistance, but good water permeability

The same type of quartz sand, coarse quartz sand is more wear-resistant than fine quartz sand, but the product has low strength and good water permeability

The strength of the surface layer affects the strength of the whole brick. Although the base cement is less used, the strength of the whole brick is also higher

Quartz sand with particle size of 2.36-1.18mm accounting for 70%-90% has better water permeability and wear resistance than quartz sand with 1.18-0.6mm particles accounting for 80%-90%, but the strength is slightly lower and the surface is rougher.

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