Preparation method for aerated concrete block

A technology for aerated concrete and waste concrete, applied in the field of building materials, can solve the problems of easy aging and burning of aerated concrete blocks, and achieve the effects of light weight, improved crack resistance, and good thermal insulation performance.

Inactive Publication Date: 2018-11-16
FOSHAN LINGCHAO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problem that the existing aera

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] Mix graphene oxide and ammonia water with pH=11 at a mass ratio of 1:50, stir for 20 minutes to obtain a mixed solution, ultrasonically disperse at a power of 200W for 50 minutes to obtain a dispersion, centrifuge at a speed of 1000r / min for 5 minutes, and filter to obtain The filtrate is the graphene oxide dispersion; in parts by weight, weigh 20 parts of ceramic waste, 18 parts of waste concrete, 22 parts of refractory cement, 5 parts of graphene oxide dispersion, 0.3 parts of foaming material, 0.1 part of Foam stabilizer, 0.1 part of air-entraining agent, 0.3 part of polypropylene fiber, 10 parts of deionized water, ceramic waste and waste concrete are crushed and ground respectively, and passed through a 200-mesh sieve to obtain ceramic waste fine powder and waste concrete fine powder , mix ceramic waste fine powder, waste concrete fine powder and refractory cement evenly, and place in an oven at a temperature of 50°C to dry to constant weight to ...

Example Embodiment

[0023] Example 2

[0024] Mix graphene oxide and ammonia water with pH=11 at a mass ratio of 1:50, stir for 25 minutes to obtain a mixed solution, ultrasonically disperse at a power of 250W for 55 minutes to obtain a dispersion, centrifuge at a speed of 2000r / min for 8 minutes, and filter to obtain The filtrate is the graphene oxide dispersion; by weight, 28 parts of ceramic waste, 24 parts of waste concrete, 29 parts of refractory cement, 7 parts of graphene oxide dispersion, 0.5 part of foaming material, 0.2 part of Foam stabilizer, 0.1 part of air-entraining agent, 0.5 part of polypropylene fiber, 14 parts of deionized water, ceramic waste and waste concrete are crushed and ground respectively, and passed through a 200-mesh sieve to obtain ceramic waste fine powder and waste concrete fine powder , mix ceramic waste fine powder, waste concrete fine powder and refractory cement evenly, and place in an oven at a temperature of 55°C to dry to constant weight to obtain a mixed p...

Example Embodiment

[0025] Example 3

[0026]Mix graphene oxide and ammonia water with pH=11 at a mass ratio of 1:50, stir for 30 minutes to obtain a mixed solution, ultrasonically disperse at a power of 300 W for 60 minutes to obtain a dispersion, centrifuge at a speed of 3000 r / min for 10 minutes, and filter to obtain The filtrate is the graphene oxide dispersion; in parts by weight, 36 parts of ceramic waste, 30 parts of waste concrete, 35 parts of refractory cement, 9 parts of graphene oxide dispersion, 0.7 part of foaming material, 0.3 part of Foam stabilizer, 0.2 part of air-entraining agent, 0.7 part of polypropylene fiber, 18 parts of deionized water, ceramic waste and waste concrete are crushed and ground respectively, and passed through a 200-mesh sieve to obtain ceramic waste fine powder and waste concrete fine powder , mix ceramic waste fine powder, waste concrete fine powder and refractory cement evenly, and place in an oven at 60°C to dry to constant weight to obtain a mixed powder,...

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PUM

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Abstract

The invention provides a preparation method for an aerated concrete block, belonging to the field of building materials. According to the invention, high-temperature-resistant polypropylene fibers arereasonably used, so the segregation of aggregate is effectively hindered, the formation of settlement cracks is prevented, and the crack resistance of the aerated concrete block is greatly improved;the dehydration catalyst ammonium polyphosphate in the invention is decomposed with heat to produce an acidic substance, a hydroxyl group on the charring agent melamine is dehydrated and carbonized toform a non-flammable three-dimensional carbonaceous layer, and a porous sponge-like foam carbonaceous layer is finally formed under the framework action of the carbonaceous layer, so the prepared aerated concrete block has light weight and good thermal insulation performance; and since graphene oxide has barrier action on gas molecules, smog and solid particles, when the graphene oxide is uniformly dispersed in a permeable polymer matrix, the smoke production capacity of the aerated concrete block is significantly reduced.

Description

technical field [0001] The invention relates to a method for preparing an aerated concrete block, which belongs to the technical field of building materials. Background technique [0002] Concrete refers to the artificial stone that reaches a certain strength and is formed by mixing aggregates, cementing materials, and water according to a certain mix ratio, and curing and hardening. Self-insulating aerated concrete is a silicate material with a microporous structure. [0003] With the promotion of wall material reform, emerging block materials mainly include: ordinary hollow concrete blocks, light aggregate hollow concrete blocks, aerated concrete blocks, etc. The self-insulating aerated concrete block is an ideal self-energy-saving system wall masonry material. [0004] Self-insulating aerated concrete is a wall building material that integrates insulation and enclosure. Its preparation process is similar to that of ordinary aerated concrete. The raw materials are mainly...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B38/02
CPCC04B28/00C04B38/02C04B2201/32C04B2201/50C04B18/165C04B18/16C04B14/024C04B2103/48C04B2103/304C04B16/0633C04B22/002
Inventor 裘友玖张鑫朱华
Owner FOSHAN LINGCHAO NEW MATERIAL CO LTD
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