A B07 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent

A technology of saponin-based air-entraining agent and air-entrained concrete, which is applied in the field of environment-friendly fine chemical materials and green environmental protection and energy-saving building materials, and can solve the problems of low slurry water-material mixing ratio, low qualified rate of block products, poor pouring stability, etc. , to achieve good sound absorption and sound insulation effects, large masonry strength utilization coefficient, and low production energy consumption

Active Publication Date: 2016-02-24
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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  • A B07 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent
  • A B07 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the formula in Table 1, each raw material was quantitatively weighed, first poured into the pouring pool 1600kg of machine-made sand and weathered sand mixture, 58kg of gypsum and 1010kg of surface water, stirred evenly to form a mortar slurry, and then poured in 322kg of lime, 281kg of cement and the rest Mix water in a certain amount, stir for a certain time, control the slurry temperature, when the temperature is ≥38°C, add water-soluble aluminum powder paste (0.98kg as aluminum) and air-entraining agent water (0.26kg as saponin) to form Stir for a certain amount of time to control the expansion of the slurry. When the expansion is ≥ 33cm, 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...

Embodiment 2

[0042] According to the formula in Table 1, each raw material was quantitatively weighed, first poured into the pouring pool 1597kg of river sand, 57kg of gypsum and 1010kg of river water, stirred evenly to form a mortar slurry, then poured in 301kg of lime, 299kg of cement and the rest of mixing water, Stir for a certain time to control the temperature of the slurry. When the temperature is ≥38°C, pour 1.01kg of aluminum powder and air-entraining agent powder (0.24kg in terms of saponin) directly, and stir for a certain time to control the expansion of the slurry. The expansion is ≥ At 33cm, 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 to ...

Embodiment 3

[0045] According to the formula in Table 1, each raw material was quantitatively weighed, first poured into the pouring pool 1593kg of sea sand, 56kg of gypsum and 1010kg of seawater, stirred evenly to form a mortar slurry, then poured into 283kg of lime, 319kg of cement and the rest of mixing water, Stir for a certain time and control the slurry temperature. When the temperature is ≥38°C, add water-soluble aluminum powder paste (1.03kg as aluminum), air-entraining agent powder (0.23kg 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 ≥ 33cm, 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, th...

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Abstract

The invention provides a B07 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent, which uses cement, lime and sand as main raw materials, and mixes a small amount of air-generating agent, regulator and air-entraining agent , Autoclaved aerated concrete block products made by hydration reaction, pouring into molds, pre-formation, cutting and forming, autoclaving curing, and processing out of the kettle. The dry density of the product is less than 698kg / m3, the compressive strength is more than 7.59MPa, the average pore diameter is less than 0.45mm, and the qualified rate is more than 95%, which is higher than the requirements of the B07 grade autoclaved aerated concrete blocks formulated by the national standard. 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 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, environmentally friendly and energy-saving, easy to implement, and has great popularization 。

Description

technical field [0001] The invention relates to a B07 grade autoclaved sand aerated concrete block prepared by adding a saponin air-entraining agent, 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 mat...

Claims

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Application Information

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