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Lightweight microporous autoclaved aerated concrete floating body material

A technology of autoclaved aerated concrete, which is applied in the field of lightweight microporous autoclaved aerated concrete floating materials and environmentally friendly fine chemical materials, and can solve the problems of low pass rate of block products, low slurry-water-material mix ratio, pouring Poor stability and other problems, to achieve the effect of large masonry strength utilization coefficient, good sound absorption and sound insulation effect, and not easy to collapse and shrink

Active Publication Date: 2016-08-17
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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  • Lightweight microporous autoclaved aerated concrete floating body material
  • Lightweight microporous autoclaved aerated concrete floating body material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] According to the formula in Table 1, each raw material was quantitatively weighed, and 820.2 kg of machine-made sand and weathered sand mixture, 31.3 kg of gypsum and 550 kg of surface water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 210.5 kg of lime, Mix 190.3 kg of cement and the rest with water, stir for a certain time, and control the temperature of the slurry. When the temperature is ≥42°C, add water-soluble aluminum powder paste (1.85 kg in terms of aluminum) and air-entraining agent water (based on saponin 0.30 kg), stirring for a certain time to control the degree of expansion of the slurry, when the degree of expansion ≥ 43 cm, the 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 form...

Embodiment 2

[0041] According to the formula in Table 1, the raw materials were quantitatively weighed, and 828.0 kg of river sand, 32.0 kg of gypsum and 580 kg of river water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 200.3 kg of lime, 199.8 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 ≥42°C, pour 1.80 kg of aluminum powder and air-entraining agent powder (0.275 kg in terms of saponin) directly, and stir for a certain time to control the slurry Expansion degree, when the expansion degree ≥ 43 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 fr...

Embodiment 3

[0044] According to the formula in Table 1, each raw material was quantitatively weighed, and 850.1 kg of sea sand, 33.1 kg of gypsum and 580 kg of seawater were first poured into the pouring pool, stirred evenly to form a mortar slurry, and then 190.1 kg of lime, 210.2 kg of cement and the rest Mix water in a certain amount, stir for a certain time, control the temperature of the slurry, when the temperature is ≥ 42°C, add water-soluble aluminum powder paste (1.75 kg as aluminum), air-entraining agent powder (0.25 kg as saponin) and water 2.0 kg of the suspension formed, stirring for several times to control the degree of expansion of the slurry, when the degree of expansion ≥ 43cm, 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 f...

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Abstract

The invention provides a lightweight microporous autoclaved aerated concrete floating body material, which belongs to a new environment-friendly fine chemical material. Calcium and siliceous 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 , Made of autoclaved aerated concrete products. The dry density of the product is less than 395 kg / m 3 , Compressive strength > 2.1 MPa, average pore diameter < 0.36 mm, pass rate > 96%. 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 present invention is novel in concept, rich in raw materials, simple in process, low in cost, easy to implement, and has great popularization. Processing and construction of cages and heat-resistant fireproof layers.

Description

technical field [0001] The invention relates to a lightweight microporous autoclaved aerated concrete floating body 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 t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10C04B38/02C04B14/06C04B22/14C04B22/04
Inventor 陈剑锋陈浩李娜
Owner FUZHOU UNIV
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