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Silica sand powder-doped concrete light-weight building block novel walling material and preparation method thereof

A technology of wall material and silica sand powder, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of high production cost, insufficient hanging force, etc., achieve light weight, save cement consumption, cost reduction effect

Inactive Publication Date: 2011-06-15
中山建华墙体材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the production of concrete lightweight wall materials is generally made of cement, lime, sand or fly ash, gypsum, aluminum powder, etc. The strength of these concrete lightweight wall materials is generally lower than 5Mpa, and the water absorption Strong, insufficient hanging force, relatively high production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The production specification is 390×190×190 (mm) ceramsite solid brick, which is a new type of wall material for concrete lightweight block mixed with silica sand powder. Dry and grind construction sand with a silica content greater than 90% to a specific surface area of ​​400m 2 / kg of silica sand powder;

[0022] Add the above-mentioned silica sand powder, portland cement above grade 32.5, ceramsite, boiler slag, and water in a ratio of 0.11:1:1:1.3:1.55:0.3 into a forced mixer and stir for 180 seconds to make it evenly mixed ;

[0023] Feed the mixed material into the cleaned ceramsite solid brick mould, extrude it, and after natural curing for 3 hours, then maintain it for 2 hours at a temperature of 175°C and a pressure of 0.9Mpa under high pressure. The compressive strength of the new wall material of concrete lightweight blocks mixed with silica sand powder in this embodiment is 7.4Mpa, which is greater than the standard strength of 5.0Mpa.

Embodiment 2

[0025] The production specification is 390×140×190 (mm) ceramsite solid brick, which is a new type of wall material for concrete lightweight block mixed with silica sand powder. The crushed quartz stone with a silica content greater than 90% is dried and ground to a specific surface area of ​​500m 2 / kg of silica sand powder;

[0026] Add the above-mentioned silica sand powder, ordinary Portland cement, ceramsite, boiler slag, and water in a ratio of 0.43:1:2.6:3.4:3.5:0.5 into a forced mixer and stir for 240 seconds to make it evenly mixed;

[0027] Feed the mixed material into the cleaned ceramsite solid brick mould, and form it by extrusion. After the temperature is 80°C, the normal pressure steam is cured for 2.0 hours, and then the temperature is 190°C, and the pressure is 1.25Mpa. High pressure curing After 6 hours, the compressive strength of the new wall material of the concrete lightweight block mixed with silica sand powder in the present embodiment was 8.3Mpa, whic...

Embodiment 3

[0029] The production specification is 390×115×190 (mm) ceramsite solid brick, which is a new type of wall material for concrete lightweight block mixed with silica sand powder. Dry and grind construction sand with a silica content greater than 90% to a specific surface area of ​​450m 2 / kg of silica sand powder;

[0030] Add the above-mentioned silica sand powder, fly ash, ceramsite, boiler slag, and water into a forced mixer in a ratio of 0.25:1:1.8:2.3:2.7:0.4 and stir for 240 seconds to make it evenly mixed;

[0031] Feed the mixed materials into the cleaned ceramsite solid brick mould, and form them by extrusion. After 1.0 hour of normal pressure steam curing at a temperature of 60°C, high pressure curing at 180°C with a pressure of 1.1Mpa After 3 hours, the compressive strength of the new wall material of the concrete lightweight block mixed with silica sand powder in the present embodiment is 8.9Mpa, which is greater than the 5.0Mpa of the standard strength.

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Abstract

The invention discloses a silica sand powder-doped concrete light-weight building block novel walling material and a preparation method thereof. The walling material is prepared from cementing materials, haydites, boiler slag, water and silica sand. The preparation method comprises the following steps: drying and milling building sand or crushed quartzite, of which the content of silicon dioxide is greater than 90%, to obtain silica sand powder of which the specific area is 400-500 m<2> / kg; proportionally adding the silica sand powder, cementing materials, haydites, boiler slag and water into a forced mixer, and evenly mixing; and evenly filling the mixture in a die, carrying out extrusion forming, carrying out natural curing or atmospheric steam curing, and curing at 175-190 DEG C under high pressure for 2-6 hours, thereby obtaining the walling material. The product disclosed by the invention has the advantages of abundant sources of raw materials, low energy consumption in production, lower production cost, light weight, high strength, low shrinkage, no cracking, seepage resistance, water resistance and no toxicity or harm. The invention can treat industrial residues and sludge, thereby changing wastes into valuable substances and being beneficial to improving the environmental pollution.

Description

technical field [0001] The invention relates to a novel wall material for concrete lightweight blocks mixed with silica sand powder, and also relates to a method for preparing the novel wall material for concrete lightweight blocks mixed with silica sand powder. Background technique [0002] In the prior art, the production of concrete lightweight wall materials is generally made of cement, lime, sand or fly ash, gypsum, aluminum powder, etc. The strength of these concrete lightweight wall materials is generally lower than 5Mpa, and the water absorption Strong, insufficient hanging force, relatively high production cost. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a new type of wall material for concrete lightweight blocks mixed with silica sand powder, which can make full use of industrial waste residue and have relatively low production cost; [0004] Another object of the present i...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B28/04C04B18/10C04B14/06
CPCC04B28/02Y02W30/91C04B14/06C04B18/023C04B18/067C04B18/12C04B20/0076C04B20/026C04B40/0259C04B40/0263C04B40/024
Inventor 宋震峰
Owner 中山建华墙体材料有限公司
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