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B07 grade autoclaved sand aerated concrete block prepared by adding saponin air entraining agents

A saponin air-entraining agent and air-entraining concrete technology, which is applied in ceramic products, applications, household appliances, etc., can solve the problems of low qualification rate of block products, low mixing ratio of slurry water and material, poor pouring stability, etc. The masonry has the advantages of large strength utilization coefficient, good sound absorption and sound insulation effect, and low production energy consumption.

Active Publication Date: 2014-11-26
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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  • B07 grade autoclaved sand aerated concrete block prepared by adding saponin air entraining agents
  • B07 grade autoclaved sand aerated concrete block prepared by adding saponin air entraining agents

Examples

Experimental program
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Effect test

Embodiment 1

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

Embodiment 2

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

Embodiment 3

[0045] According to the formula in Table 1, the raw materials were weighed quantitatively, and 1593 kg of sea sand, 56 kg of gypsum and 1010 kg of seawater were first poured into the pouring pool, and stirred to form a mortar slurry, and then 283 kg of lime, 319 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 ≥38°C, add water-soluble aluminum powder paste (1.03 kg as aluminum), air-entraining agent powder (0.23 kg as saponin) and water 1.8 kg of the suspension formed, stirring for several times to control the degree of expansion of the slurry, when the degree of expansion ≥ 33 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 form...

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Abstract

The invention provides a B07 grade autoclaved sand aerated concrete block prepared by adding saponin air entraining agents. An autoclaved aerated concrete block product is prepared by using cement, lime and sand as main raw materials, doping a small quantity of gas generating agents, regulating agent and air entraining agents and carrying out hydration reaction, molding by pouring, billet forming by precuring, forming by cutting, autoclaved curing and processing out of a kettle. The autoclaved sand aerated concrete block is characterized in that the dry density, compressive strength, mean pore diameter and percent of pass of the product are respectively less than 698kg / m<3>, more than 7.59MPa, less than 0.45mm and more than 95% and are higher than the requirements, which are formulated in the national standards, of superior products of the B07 grade autoclaved aerated concrete block, so that the B07 grade autoclaved aerated concrete block is a single wall material capable of meeting more than 65% of energy saving requirements in cold regions in China. By adding a small quantity of saponin concrete air entraining agents, the ratio of water to materials, unit aluminium powder gas generation quantity and pouring stability in the production process as well as the volume, strength and quality of the product can be obviously increased. The B07 grade autoclaved sand aerated concrete block is novel in conception, rich in raw materials, simple in process and low in cost, is environment-friendly and energy-saving, is convenient to implement and has greater popularization performance.

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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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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