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Light porous self-insulating concrete block and preparation method thereof

A concrete block and self-insulation technology, applied in ceramic products, other household appliances, applications, etc., can solve the problems of non-renewable land resources, waste of energy consumption, weak awareness of environmental protection, low building standards, etc., to improve thermal engineering Performance, cost reduction, and energy consumption reduction effects

Active Publication Date: 2016-10-12
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For a long time, due to the low economic level in our country, low construction standards, and weak awareness of environmental protection, a large number of clay fired bricks have been used as building masonry materials in buildings, resulting in the waste of a large amount of non-renewable land resources and huge energy consumption.

Method used

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  • Light porous self-insulating concrete block and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1- Embodiment 4

[0019] Embodiment 1-Example 4: A light porous self-insulating concrete block, the ratio of each raw material and the index of the block are shown in Table 1.

[0020]

[0021] In Table 1, the bagasse cellulose was soaked in a sodium hydroxide solution with a mass fraction of 18% for 1 hour, the mass ratio of the bagasse cellulose to the sodium hydroxide solution was 1:1.8, and the bagasse cellulose was filtered out for use. Wash with ionized water until neutral, and dry in vacuum. The moisture content of bagasse cellulose is less than 5%. After the construction waste slag is ground, it is sieved through a 300-mesh standard sieve. The construction waste mentioned above mainly refers to the discarded bricks produced during the demolition process.

Embodiment 5

[0022] Embodiment 5: a kind of preparation method of lightweight porous self-insulating concrete block as described in embodiment 1-4, comprises the following steps:

[0023] (1) Mix cement, construction waste residue, fly ash, quicklime, titanium gypsum powder and accelerator;

[0024] (2) Add the pretreated bagasse cellulose, nano-alumina, and nano-calcium carbonate to the ethanol solution containing 0.4-0.6% silane coupling agent KH-550 for ultrasonic dispersion, and add it to the mixture in step (1) after drying Quickly stir and mix for 3-4 minutes to mix well;

[0025] ⑶ After the foaming agent, water reducer and appropriate amount of water are mixed evenly, add the mixture in step ⑵ and stir quickly in the pouring mixer to make a slurry, put the slurry into the mold, make it into the required shape, and then maintain it naturally under normal pressure. The curing time is not less than 10 days, and an energy-saving lightweight porous concrete block is obtained. The obta...

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Abstract

The invention relates to a light porous self-insulating concrete block and a preparation method thereof. The light porous self-insulating concrete block is prepared from the following raw materials in parts by weight: 20-32 parts of cement, 20-35 parts of building waste residues, 3-18 parts of bagasse cellulose, 10-25 parts of fly ash, 0.02-1 part of calcined lime, 3-5.5 parts of nano aluminium oxide, 0.2-1.6 parts of nano calcium carbonate, 1-3 parts of titanium gypsum powder, 0.2-0.5 part of an accelerator, 7-15 parts of a foaming agent, 0.1-0.5 part of a water reducing agent and a proper amount of water. The bagasse cellulose and the building waste residues are utilized effectively, consumption of non-renewable clay resources is reduced, building waste materials are recycled, the light porous self-insulating concrete block which is light in self weight, high in strength and good in thermal performance is prepared by reasonable raw material ratio, and social and economic benefits are improved.

Description

technical field [0001] The invention relates to the technical field of building energy-saving materials, in particular to a lightweight porous self-insulating concrete block and a preparation method thereof. Background technique [0002] With the rapid development of my country's social economy, my country's total building energy consumption is also rising. In 2014, my country's building energy consumption accounted for about 30% of the total energy consumption. Therefore, implementing building energy conservation work and scientifically and rationally reducing building energy consumption are of great significance for implementing energy conservation and emission reduction strategies, building a resource-saving society, and achieving sustainable development. In building energy consumption, the heat loss of building exterior wall envelope is the main factor leading to high energy consumption of buildings. Therefore, the innovation of building heating, insulation and exterior ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/06C04B28/08
CPCC04B28/06C04B28/08C04B2111/00008C04B2201/20C04B2201/32C04B2201/50C04B18/16C04B18/248C04B18/08C04B22/064C04B14/303C04B14/28C04B22/146C04B2103/12C04B22/04C04B22/08C04B2103/302C04B38/02C04B7/02C04B7/32C04B22/068
Inventor 谭春雷邓宇叶雁冰曾鑫曹瑞丹张友顺
Owner GUANGXI UNIVERSITY OF TECHNOLOGY