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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: 2014-11-05
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 weighed quantitatively, and 460.3 kg of machine-made sand and weathered sand mixture, 19.0 kg of gypsum and 300 kg of surface water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 150.1 kg of lime, Mix 130.5 kg of cement and the rest with water, stir for a certain time, and control the temperature of the slurry. When the temperature is ≥49°C, add water-soluble aluminum powder paste (2.3 kg in terms of aluminum) and air-entraining agent water (based on saponin 0.35 kg), stirring for a certain time to control the degree of expansion of the slurry, when the degree of expansion ≥ 50 cm, the inner volume of the slurry injection is 3.24 m 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...

Embodiment 2

[0042] According to the formula in Table 1, each raw material was quantitatively weighed, and 163.8 kg of river sand, 19.6 kg of gypsum and 300 kg of river water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 140.2 kg of lime, 140.3 kg of cement and Mix the remaining amount with water, stir for a certain time, and control the temperature of the slurry. When the temperature is ≥49°C, pour 2.25 kg of aluminum powder and air-entraining agent powder (0.325 kg in terms of saponin) directly, and stir for a certain time to control the slurry Expansion degree, when the expansion degree ≥ 50 cm, the inner volume of slurry injection is 3.24 m 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 fre...

Embodiment 3

[0045] According to the formula in Table 1, each raw material was quantitatively weighed, and 462.1 kg of sea sand, 19.0 kg of gypsum and 300 kg of seawater were first poured into the pouring pool, and stirred to form a mortar slurry, and then 129.9 kg of lime, 150.3 kg of cement and the remaining Mix water in a certain amount, stir for a certain time, control the temperature of the slurry, when the temperature is ≥ 49°C, add water-soluble aluminum powder paste (2.2 kg as aluminum), air-entraining agent powder (0.30 kg as saponin) and water 3.5 kg of the suspension formed, stirring for several times to control the degree of expansion of the slurry, when the degree of expansion ≥ 50 cm, the inner volume of the slurry injection is 3.24 m 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...

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Abstract

The invention provides an autoclaved aerated concrete lightweight porous filling material, relating to green chemical preparation of aerated concrete and belonging to the field of novel environment-friendly fine chemical materials and green building materials. The autoclaved aerated concrete product is prepared by using calcium and siliceous materials as main raw materials, doping gas generating agents, regulating agents and air entraining agents, and carrying out hydration reaction, mold forming by pouring, blank forming by procuring, forming by cutting, autoclaved curing, out-kettle processing and other processes. The dry density, compressive strength, mean pore diameter and percent of pass of the product are respectively less than 236kg / m<3>, more than 0.59MPa, less than 0.48mm and more than 90%. By adding a small quantity of saponin concrete air entraining agents, the ratio of water to material, unit aluminium powder gas evolution and pouring stability in the production process and the volume, strength and quality of the product can be obviously increased. The filling material is novel in conception, rich in raw materials, simple in process and low in cost, is convenient to implement and has greater generalization performance. The product is a novel filling material and has the applications of sound absorption and insulation, heat insulation and floating on water surfaces.

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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IPC IPC(8): C04B28/10C04B38/02C04B24/10
Inventor 陈剑锋陈浩李娜
Owner FUZHOU UNIV
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