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Lightweight microporous autoclaved aerated concrete floating body material

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

Active Publication Date: 2014-11-19
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 ≥ 43 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 a lightweight microporous autoclaved aerated concrete floating body material, and relates to a novel environment-friendly fine chemical material. According to the invention, a calcium material and a silicon material are adopted as main raw materials; a gas-forming material, a regulating material, and an air-entraining agent are doped in; and through processes such as a hydration reaction, mold casting; pre-curing and blank-forming, cutting and shaping, autoclave curing, fetching, and processing, the autoclaved aerated concrete product is produced. The product has a dry density lower than 395kg / m<3>, a compressive strength higher than 2.1Mpa, an average pore size lower than 0.36mm, and a qualification rate higher than 96%. Through adding a small amount of the saponin concrete air-entraining agent, a water-to-material ratio during the production process, unit aluminum powder gas-forming amount, and casting stability can be substantially improved. Also, product volume, strength and quality can be substantially improved. The material provided by the invention has the advantages of innovative concept, rich raw materials, simple process, low cost, convenient implementation, and good popularization value. The product can be used as a novel environment-friendly energy-saving material in processing and construction of floating bodies, pontoons, artificial rafts, floating wave absorption embankments and 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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IPC IPC(8): C04B28/10C04B38/02C04B14/06C04B22/14C04B22/04
Inventor 陈剑锋陈浩李娜
Owner FUZHOU UNIV
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