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Autoclaved Aerated Concrete Lightweight Porous Filling Material

A technology of porous filling materials and autoclaved air filling, which is applied in the fields of autoclaved air-entrained concrete lightweight porous filling materials and environmentally friendly fine chemical materials, and can solve the problem of low mixing ratio of slurry to water and low qualified rate of block products , Poor pouring stability and other problems, to achieve good sound absorption and sound insulation effects, not easy to collapse and shrink, and low production energy consumption

Active Publication Date: 2016-06-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the production process of aerated concrete, there are generally low slurry-water-material mix ratios, poor pouring stability, and easy occurrence of slurry mold collapse and green body shrinkage. Block products generally have low pass rate, high bulk density, and low compressive strength. , Large and uneven pores, less pores, high thermal conductivity, short fire resistance limit, poor durability, etc.

Method used

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  • Autoclaved Aerated Concrete Lightweight Porous Filling Material
  • Autoclaved Aerated Concrete Lightweight Porous Filling Material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the formula in Table 1, each raw material was quantitatively weighed, first poured 460.3kg of machine-made sand and weathered sand mixture, 19.0kg of gypsum and 300kg of surface water into the pouring pool, stirred to form a mortar slurry, and then poured in 150.1kg of lime, cement 130.5kg and the rest of the mixing water, stir for some time, control the temperature of the slurry, when the temperature is ≥ 49 ℃, then add water-soluble aluminum powder paste (2.3kg as aluminum) and air-entraining agent water (calculated as saponin) 0.35kg), stirring for a certain time to control the degree of expansion of the slurry, when the degree of expansion is ≥ 50cm, the inner volume of the slurry injection is 3.24m 3 After the pouring is completed, the mold is moved to the static parking room for maintenance for a certain period of time. After the green body meets the solidification requirements, it is moved out of the static parking room. After cutting and forming acco...

Embodiment 2

[0042] According to the formula in Table 1, each raw material was weighed quantitatively, and 163.8kg of river sand, 19.6kg of gypsum and 300kg of river water were first poured into the pouring pool, stirred evenly to form a mortar slurry, and then 140.2kg of lime, 140.3kg of cement and remaining Measure mixing water, stir for a certain time, control the temperature of the slurry, when the temperature is ≥ 49°C, pour 2.25kg of aluminum powder and air-entraining agent powder (0.325kg in terms of saponin) directly, and stir for a certain time to control the expansion of the slurry degree, expansion degree ≥ 50cm, the inner volume of slurry injection is 3.24m 3 After the pouring is completed, the mold is moved to the static parking room for maintenance for a certain period of time. After the green body meets the solidification requirements, it is moved out of the static parking room. After cutting and forming according to the product specifications, the mold is freed, and the gree...

Embodiment 3

[0045] According to the formula in Table 1, weigh each raw material quantitatively, first put 462.1kg of sea sand, 19.0kg of gypsum and 300kg of seawater into the pouring pool, stir well to form a mortar slurry, then put in 129.9kg of lime, 150.3kg of cement and the rest Mix water, stir for a certain time, control the temperature of the slurry, when the temperature is ≥49°C, add water-soluble aluminum powder paste (2.2kg as aluminum), air-entraining agent powder (0.30kg as saponin) and water 3.5 kg of the suspension formed, stirring for a certain time to control the degree of expansion of the slurry, when the degree of expansion is ≥ 50cm, the inner volume of the slurry injection is 3.24m 3 After the pouring is completed, the mold is moved to the static parking room for maintenance for a certain period of time. After the green body meets the solidification requirements, it is moved out of the static parking room. After cutting and forming according to the product specifications...

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Abstract

The invention provides an autoclaved aerated concrete-type lightweight porous filling material, relates to the green chemical preparation of aerated concrete, and belongs to the fields of new environment-friendly fine chemical materials and green building materials. Silicon and calcium materials are used as the main raw materials, mixed with air-generating agents, regulators and air-entraining agents, after hydration reaction, casting into molds, pre-formation, cutting and molding, autoclave curing, and processing out of the kettle, etc. Autoclaved aerated concrete products made by technology. The dry density of the product is less than 236kg / m3, the compressive strength is more than 0.59MPa, the average diameter of pores is less than 0.48mm, and the qualified rate is more than 90%. By adding a small amount of saponin concrete air-entraining agent, the ratio of water to material in the production process, the amount of gas produced per unit of aluminum powder and pouring stability, as well as the volume, strength and quality of the product can be significantly improved. The invention is novel in concept, rich in raw materials, simple in process, low in cost, easy to implement, and widely popularized. The product is a new type of filling material, which has the functions of sound absorption, sound insulation, thermal insulation, and water surface floating.

Description

technical field [0001] The invention provides an autoclaved aerated concrete-type lightweight porous filling material, relates to the green chemical preparation of aerated concrete, and belongs to the fields of novel environment-friendly fine chemical materials and green, environment-friendly and energy-saving building materials. Background technique [0002] The development of new wall materials is a strategic demand for promoting the sustainable and healthy development of my country's economic society and building an ecological country. Air-entrained concrete is a new type of green environmental protection and energy-saving material. It refers to the main raw materials of calcareous and siliceous materials, mixed with air-generating agents, and formed by hydration reaction, pouring molding, pre-curing cutting, autoclaving and other processes. The porous new wall material is a new type of environmental protection and energy-saving building material that can achieve the best...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10C04B38/02C04B24/10
Inventor 陈剑锋陈浩李娜
Owner FUZHOU UNIV
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