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A B06 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent

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

Active Publication Date: 2016-09-07
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 B06 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent
  • A B06 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the formula in Table 1, each raw material was quantitatively weighed, and 1354 kg of machine-made sand and weathered sand mixture, 48 kg of gypsum and 850 kg of surface water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 293 kg of lime, Mix 251 kg of cement and the rest with water, stir for a certain time, and control the temperature of the slurry. When the temperature is ≥40°C, add water-soluble aluminum powder paste (1.43 kg in terms of aluminum) and air-entraining agent water (based on saponin 0.27 kg), stirring for a certain time to control the degree of expansion of the slurry, when the degree of expansion ≥ 36 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 formi...

Embodiment 2

[0042] According to the formula in Table 1, the raw materials were weighed quantitatively, and 1339 kg of river sand, 49 kg of gypsum and 850 kg of river water were first poured into the pouring pool, and stirred to form a mortar slurry, and then 273 kg of lime, 270 kg of cement and the remaining Mix water, stir for a certain time, and control the slurry temperature. When the temperature is ≥ 40°C, pour 1.41 kg of aluminum powder and air-entraining agent powder (0.25 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 ≥36 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 freed, and the gree...

Embodiment 3

[0045] According to the formula in Table 1, the raw materials were quantitatively weighed, and 1335 kg of sea sand, 50 kg of gypsum and 850 kg of seawater were first poured into the pouring pool, and stirred to form a mortar slurry, and then 251 kg of lime, 291 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 ≥40°C, add water-soluble aluminum powder paste (1.35 kg as aluminum), air-entraining agent powder (0.23 kg as saponin) and water 1.8 kg of the suspension formed, stirred for several times to control the degree of expansion of the slurry, when the degree of expansion ≥ 36 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 formin...

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Abstract

The invention provides a B06 grade autoclaved sand aerated concrete block prepared by adding saponin air-entraining agent, which uses cement, lime and sand as main raw Autoclaved aerated concrete blocks made of hydration reaction, pouring into molds, pre-formation, cutting and molding, autoclaving curing, and processing out of the kettle. The dry density of the block is less than 596 kg / m3, the compressive strength is more than 5.12 MPa, the average diameter of pores is less than 0.45 mm, and the qualified rate is more than 97%. 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 widely popularized. The block is an environmentally friendly and energy-saving wall material, which can be applied to non-load-bearing walls, wall panels and roof panels of buildings. processing and construction.

Description

technical field [0001] The invention relates to a B06 grade autoclaved sand aerated concrete block prepared by adding a saponin air-entraining agent, relates to 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 materia...

Claims

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Application Information

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