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Biomass ash concrete block and preparation method thereof

A biomass ash and concrete block technology, which is applied in the field of concrete bricklaying, can solve the problems of restricting the development of biomass energy industry, high content of suspended particles, affecting environmental quality, etc., and achieves good use effect, simple method and economic benefits. Good results

Inactive Publication Date: 2017-12-29
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the treatment of biomass ash in our country is generally through landfill, which not only occupies a large amount of land and pollutes groundwater, but also causes the content of suspended particles in the air to be too high during the landfill process, which seriously affects the environmental quality. Restricting the development of biomass energy industry

Method used

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  • Biomass ash concrete block and preparation method thereof
  • Biomass ash concrete block and preparation method thereof
  • Biomass ash concrete block and preparation method thereof

Examples

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preparation example Construction

[0038] The embodiment of the present invention provides a preparation method of biomass ash slag concrete block, which includes:

[0039] S1. In terms of parts by weight, first mix 130-280 parts of biomass ash and 460-540 parts of fly ash evenly, then add 110-150 parts of cement, 60-150 parts of quicklime and 15-30 parts of gypsum, continue Stir for 2-3 minutes, then add 600-700 parts of water (the temperature of the added water is 45-55℃), 1.0-1.2 parts of aluminum powder, 1.0-1.2 parts of alkaline activator, 0.5-1.0 parts of foam stabilizer and 0.5 -1.0 part of polycarboxylic acid water reducing agent, fully stirred, fully stirred means fast stirring 40-50s, slow stirring 30-40s, the speed of fast stirring is (285±10)r / min, the speed of slow stirring is (140 ±5) r / min to obtain slurry.

[0040] In this embodiment, before adding the biomass ash, the biomass ash is wet-milled to improve the reactivity of the raw materials. Specifically, anhydrous ethanol is selected as the grindin...

Embodiment 1

[0047] This embodiment provides a biomass ash slag concrete block, which is prepared by the following preparation method:

[0048] Weigh 264kg of biomass ash, 528kg of fly ash, 140kg of cement, 48kg of quicklime, 20kg of gypsum, 1.2kg of aluminum powder, 1.0kg of a mixture of sodium carbonate and sodium lauryl sulfate with a mass ratio of 2:1, polycarboxylic acid reduction 0.6kg of water, 0.6kg of polyvinyl alcohol solution with 5% mass fraction, and 650kg of water.

[0049] First, mix the biomass ash and fly ash evenly according to the ratio, then add the prepared cement, quicklime and gypsum, continue to stir for 2 minutes, and then add pre-heated water (water temperature of 50°C), aluminum powder and additives. Stir thoroughly (fast stirring for 45s, slow stirring for 30s) to obtain a slurry.

[0050] Pour the prepared slurry and put it in a hot room (humidity 96%, temperature 60℃) to stop the gas for 4h, finally demoulding and cutting, put it into the autoclave for curing, and k...

Embodiment 2

[0052] This embodiment provides a biomass ash slag concrete block, the preparation method of which is roughly the same as the preparation method in Example 1, except that:

[0053] Weigh 258kg of biomass ash, 516kg of fly ash, 140kg of cement, 66kg of quicklime, 20kg of gypsum, 1.2kg of aluminum powder, 1.0kg of a mixed solution of sodium carbonate and sodium lauryl sulfate with a mass ratio of 2:1, polycarboxylic acid 0.6kg of water reducing agent, 0.6kg of polyvinyl alcohol solution with mass fraction of 5%, and 650kg of water.

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Abstract

The invention discloses a biomass ash concrete block and a preparation method thereof and relates to the field of concrete blocks. The biomass ash concrete block is mainly prepared from raw materials in parts by weight as follows: biomass ash, fly ash, cement, quick lime, gypsum, aluminum powder, an alkali-activator, a foam stabilizer, a polycarboxylate superplasticizer and water. The biomass ash is used as a raw material of the biomass ash concrete block, reutilization of the biomass ash is realized, and the product has high hardness, good strength and good use effect. The preparation method of the biomass ash concrete block comprises steps as follows: firstly, the biomass ash and the fly ash are mixed uniformly, secondly, cement, quick lime and gypsum are added, the mixture is continuously stirred for 2-3 min, later, water, aluminum powder, the alkali-activator, the foam stabilizer and the polycarboxylate superplasticizer are added, the mixture is sufficiently stirred, and slurry is obtained; the slurry is poured, left to stand for gas formation for 3-4 h, demolded, cut and cured. By means of the preparation method, the biomass ash is effectively utilized, the method is simple, low in cost and good in economic benefits.

Description

Technical field [0001] The invention relates to the field of concrete bricklaying, and particularly relates to a biomass ash slag concrete building block and a preparation method thereof. Background technique [0002] Agriculture is our country's primary industry, and it is also the most important basic guarantee for national economic construction and social development. In my country, the annual output of crop straw is nearly 700 million tons, while the waste of agricultural processing industry is as high as 80 million tons. In recent years, energy crops that mainly provide energy, including herb energy crops, oil crops, hydrocarbon plants and aquatic plants, have gradually become a major resource of agricultural biomass energy. Taking into account the characteristics of the availability of crop straw, it is estimated that the amount of crop straw resources that can be converted into energy from China's agricultural biomass resources is about 300 million tons, equivalent to 150...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B38/02C04B18/10
CPCC04B18/101C04B28/00C04B2111/00017C04B18/08C04B22/064C04B22/143C04B22/04C04B22/10C04B24/16C04B2103/302C04B24/2623C04B22/002C04B38/02Y02W30/91
Inventor 奚新国蔡星吕洪杰高欣
Owner YANCHENG INST OF TECH
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