Load-bearing autoclaved aerated concrete wall material prepared by adding saponin air-entraining agent

A saponin-type air-entraining agent and a technology for concrete walls, which are applied in the field of green environmental protection and energy-saving building materials, can solve the problems of low qualified rate of block products, low mixing ratio of slurry water and material, poor pouring stability, etc., and achieve the strength utilization of masonry. The effect of large coefficient, good sound absorption and sound insulation effect, and low production energy consumption

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

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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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  • Load-bearing autoclaved aerated concrete wall material prepared by adding saponin air-entraining agent
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Examples

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Effect test

Embodiment 1

[0037] According to the formula in Table 1, each raw material was quantitatively weighed, first poured into the pouring pool 1846kg of machine-made sand and weathered sand mixture, 65kg of gypsum and 1150kg of surface water, stirred evenly to form a mortar slurry, and then poured in 343kg of lime, 321kg of cement and the rest Mix water in a certain amount, stir for a certain time, control the slurry temperature, when the temperature is ≥35°C, add water-based aluminum powder paste (0.91kg as aluminum) and air-entraining agent water (0.25kg as saponin) to form Stir for a certain amount of time to control the expansion degree of the slurry. When the expansion degree is ≥ 30cm, 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

[0040] According to the formula in Table 1, each raw material was quantitatively weighed, first poured into the pouring pool 1861kg of river sand, 64kg of gypsum and 1150kg of river water, stirred evenly to form a mortar slurry, then poured into 332kg of lime, 331kg of cement and the rest of mixing water, Stir for a certain time to control the temperature of the slurry. When the temperature is ≥35°C, pour 0.92kg of aluminum powder and air-entraining agent powder (0.23kg in terms of saponin) directly, and stir for a certain time to control the expansion of the slurry. The expansion is ≥ At 30cm, 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 green body is moved t...

Embodiment 3

[0043] According to the formula in Table 1, each raw material was quantitatively weighed, and 1875kg of sea sand, 63kg of gypsum and 1150kg of seawater were first poured into the pouring pool, and stirred to form a mortar slurry, and then 325kg of lime, 341kg of cement and the rest of mixing water were poured in. Stir for a certain time and control the slurry temperature. When the temperature is ≥35°C, add water-based aluminum powder paste (0.93kg as aluminum), air-entraining agent powder (0.21kg as saponin) and 1.8kg of water. Suspension, stir for some time to control the degree of expansion of the slurry, when the degree of expansion is ≥ 30cm, 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 specifi...

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Abstract

The invention provides a load-bearing autoclaved aerated concrete wall material prepared by mixing saponin air-entraining agents, which uses calcium and silicon materials as main raw materials and mixes a small amount of air-entraining agents, regulators and air-entraining Air agent, the autoclaved aerated concrete is made by hydration reaction, pouring into mold, pre-formation, cutting and forming, autoclaving curing, and processing out of the kettle. The product has a dry density of <795 kg / m3, a compressive strength of >10.09 MPa, an average pore diameter of <0.45 mm, a dry thermal conductivity of <0.19 W·m-1·K-1, and a pass rate of >95%, which is higher than the national standard The formulated requirements for high-grade heavy-duty autoclaved aerated concrete blocks are a single wall material that can meet more than 65% of energy-saving requirements in cold regions of my country. By adding a small amount of saponin air-entraining agent, the ratio of water to material in the production process, the gas production 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 has the advantages of novel conception, abundant raw materials, simple process, low cost, environmental protection and energy saving, convenient implementation and greater popularization.

Description

technical field [0001] The invention relates to a load-bearing autoclaved aerated concrete wall material prepared by mixing saponin air-entraining agents, relates to the green chemical preparation of aerated concrete, and belongs to the fields of new 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B28/00C04B24/10
Inventor 陈剑锋陈浩李娜
Owner FUZHOU UNIV
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