All-solid-waste water permeable brick as well as preparation method and application thereof

A technology of permeable bricks and water reducers, applied in the field of all-solid waste permeable bricks and their preparation, can solve the problems of large thickness, unfavorable sustainable development, high energy consumption of Portland cement production, etc., and achieve simple process and good water permeability , the effect of improving the overall mechanical properties and water permeability

Pending Publication Date: 2021-11-02
山东高速材料技术开发集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional ceramic permeable bricks are made of industrial solid waste, due to their large thickness and high temperature calcination, the kiln investment and energy consumption are far greater than those of non-ceramic concrete.
The binder of traditional non-ceramic permeable bricks is generally Portland cement. The production energy consumption of Portland cement is high, and the raw materials for production are mainly natural mineral resources, which is not conducive to sustainable development.

Method used

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  • All-solid-waste water permeable brick as well as preparation method and application thereof

Examples

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preparation example Construction

[0041] In a second aspect of the present invention, a method for preparing the above-mentioned all-solid waste permeable brick is provided, which includes:

[0042] Preparation of the bottom layer of the permeable brick: Dry mix the solid waste-based sulfoaluminate cementitious material and steel slag in proportion, then add water and water reducer to mix evenly to form a dry and hard mixture, and spread it into the mold for initial pressure to become a permeable brick bottom layer;

[0043] Preparation of the surface layer of permeable bricks: Use a mortar mixer to evenly mix solid waste-based sulfoaluminate cementitious materials, iron tailings sand, and water to make fabrics, and then evenly spread them on the pressed bottom layer, and finally press them into shape;

[0044] The permeable brick samples were cured for 28 days under the conditions of temperature 20±0.5°C and humidity 98%.

[0045] Preferably, the thickness of the bottom layer of the permeable brick is 50-60m...

Embodiment 1

[0050] Preparation of solid waste-based sulfoaluminate cementitious material:

[0051] Steel slag 25%, aluminum ash 22.39%, desulfurized gypsum 30.20%, carbide slag 22.39%, the raw materials after grinding and homogenization were calcined at 1220°C in the kiln, and the holding time was 30min to obtain solid waste-based sulphoaluminate cement Clinker, the obtained solid waste-based sulphoaluminate cement clinker is ground with 4% desulfurized gypsum to prepare solid waste-based sulphoaluminate cementitious material, which has the characteristics of early strength, fast hardening, low cost and environmental protection .

Embodiment 2

[0053] An all-solid waste permeable brick consists of the following components by weight: 15 parts of solid waste-based sulfoaluminate cementitious material; bottom layer aggregate: 80 parts of steel slag; surface layer aggregate: 8 parts of iron tailings; water-binder ratio 0.33; The water reducer accounts for 0.2 parts of the cementitious material;

[0054] A small brick machine is used for layered compression molding. The sample size is 200mm×200mm×60mm, the thickness of the bottom layer is 55mm, and the thickness of the surface layer is 5mm. First use a forced mixer to dry mix solid waste-based sulphoaluminate cementitious materials and steel slag with a particle size of 5.0mm to 20.0mm for 60s, add water and water reducer and mix evenly for 120s to form a dry and hard mixture, and then pave to the appropriate position in the mold, and finally pressed into the bottom layer of the permeable brick according to the designed molding parameters. At the same time, use a mortar ...

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Abstract

The invention relates to the technical field of water permeable bricks, in particular to an all-solid-waste water permeable brick and a preparation method and application thereof. The water permeable brick comprises a bottom layer and a surface layer, wherein the bottom layer comprises the following raw materials in parts by mass: 15-22 parts of a solid waste-based sulphoaluminate cementing material, 70-80 parts of steel slag, a water-cementitious material ratio of 0.33, and 3-4.4 parts of a water reducing agent; and the surface layer is prepared from the following raw materials in parts by mass: 15-22 parts of a solid waste-based sulphoaluminate cementing material, 8-10 parts of iron tailing sand, a water-cementitious material ratio of 0.33 and 3-4.4 parts of a water reducing agent. The solid waste-based sulphoaluminate cementing material and the steel slag are compounded, so that the compressive strength of the water permeable brick is improved, and the water permeability of the water permeable brick can be ensured to be good. The wear resistance and the freezing resistance of the water-permeable brick reach the standards of the water-permeable brick, iron tailing sand is selected as aggregate in the surface layer, and the iron tailing sand is compounded with a solid waste-based sulphoaluminate cementing material, so that the water permeability is improved, water can more easily penetrate through the surface layer to reach the bottom layer of the water-permeable brick, and the penetrated water can more easily penetrate through the base layer. All solid waste raw materials are adopted, the process is simple, and cost is low.

Description

technical field [0001] The invention relates to the technical field of permeable bricks, in particular to an all-solid waste permeable brick and its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Permeable brick is a kind of permeable pavement material with high porosity. Permeable brick can penetrate rainwater into the ground, which can achieve the effect of drying when the rain stops. At the same time, it plays a positive role in the replenishment of soil water and groundwater resources. It can effectively alleviate the negative impact of hardened roads on urban groundwater resources. [0004] Traditional permeable brick materials a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B7/32C04B38/00E01C5/04C04B111/76C04B111/40
Inventor 冯美军王坤李孟吴长亮曲恒辉王冠田冬军张超
Owner 山东高速材料技术开发集团有限公司
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