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Autoclaved aerated concrete block prepared from incineration fly ash and construction waste, and preparation method thereof

A technology for concrete blocks and construction waste, applied in applications, ceramic products, household appliances, etc., can solve problems such as lack of coordinated integrated treatment, and achieve the effect of reducing environmental pressure

Pending Publication Date: 2021-10-26
HAIAN INST OF HIGH TECH RES NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN106186874B discloses an ecological permeable brick prepared from construction waste and its preparation method, Chinese patent CN104529285B discloses a method for preparing self-insulating hollow blocks from construction waste, and Chinese patent CN103128005B discloses a municipal solid waste incineration fly ash Chinese patent CN101905967A discloses fly ash sintered bricks made of domestic waste incineration fly ash washed with water and its preparation method. The above patents are all about processing a kind of solid waste. Currently, construction waste and waste incineration Among fly ash treatment methods, there is no coordinated and integrated treatment method

Method used

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  • Autoclaved aerated concrete block prepared from incineration fly ash and construction waste, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An autoclaved aerated concrete block prepared by incineration fly ash and construction waste, characterized in that it is composed of the following raw materials in mass percentage:

[0026] Incineration fly ash 25%

[0027] Construction waste 40%

[0028] Quicklime 12%

[0029] Cement 18%

[0030] Gypsum 3.5%

[0031] Anti-split fiber 1.5%

[0032] Aluminum powder 0.08%

[0033] The preparation method of the autoclaved aerated concrete block comprises the following steps in sequence:

[0034] S1 Dry mixing of ingredients: Weigh incineration fly ash, construction waste, quicklime, cement, gypsum and anti-cracking fiber according to the weight ratio and put them into a cement mortar mixer for 5 minutes to dry mix to obtain a dry mix;

[0035] S2 Wet mixing and pulping: Weigh water according to the water-material mass ratio of 0.43 and add it to the cement mortar mixer, stir for 12 minutes, weigh aluminum powder according to the weight ratio and put it into the ceme...

Embodiment 2

[0039] An autoclaved aerated concrete block prepared by incineration fly ash and construction waste, characterized in that it is composed of the following raw materials in mass percentage:

[0040] Incineration fly ash 22%

[0041] Construction waste 43%

[0042] Quicklime 14%

[0043] Cement 16%

[0044] Gypsum 4.0%

[0045] Anti-crack fiber 1.0%

[0046] Aluminum powder 0.06%

[0047] The preparation method of the autoclaved aerated concrete block comprises the following steps in sequence:

[0048] S1 Dry mixing of ingredients: Weigh incineration fly ash, construction waste, quicklime, cement, gypsum and anti-cracking fiber according to the weight ratio and put them into a cement mortar mixer for 4 minutes to dry mix to obtain a dry mix;

[0049] S2 Wet mixing and pulping: Weigh water according to the water-material mass ratio of 0.44 and add it to the cement mortar mixer, stir for 13 minutes, weigh aluminum powder according to the weight ratio and put it into the ceme...

Embodiment 3

[0053] An autoclaved aerated concrete block prepared by incineration fly ash and construction waste, characterized in that it is composed of the following raw materials in mass percentage:

[0054] Incineration fly ash 28%

[0055] Construction waste 37%

[0056] Quicklime 15%

[0057] Cement 15%

[0058] Gypsum 3.8%

[0059] Anti-split fiber 1.2%

[0060] Aluminum powder 0.07%

[0061] The preparation method of the autoclaved aerated concrete block comprises the following steps in sequence:

[0062] S1 Dry mixing of ingredients: Weigh incineration fly ash, construction waste, quicklime, cement, gypsum and anti-cracking fiber according to the weight ratio and put them into a cement mortar mixer for 5 minutes to dry mix to obtain a dry mix;

[0063] S2 Wet mixing pulping: Weigh water according to the water-material mass ratio of 0.45 and add it to the cement mortar mixer, stir for 15 minutes, weigh aluminum powder according to the weight ratio and put it into the cement mor...

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Abstract

The invention discloses an autoclaved aerated concrete block prepared from incineration fly ash and construction waste. The autoclaved aerated concrete block is prepared from the incineration fly ash, the construction waste, quick lime, cement, gypsum, anti-crack fibers, aluminum powder and other raw materials. The preparation method sequentially comprises the steps of material preparation and dry mixing, wet mixing and pulping, pouring and precuring, cutting and autoclaved curing. The autoclaved aerated concrete block prepared by the invention reaches A5.0 and B06 levels of GB 11968-2006 autoclaved aerated concrete blocks, provides a way for effective resource utilization of the municipal waste incineration fly ash and the construction waste while turning waste into wealth, reduces environmental pressure, achieves comprehensive utilization of secondary resources is achieved, unification of social benefits, economic benefits and environmental benefits, and has certain practical significance.

Description

technical field [0001] The invention relates to the field of building material preparation, in particular to an autoclaved aerated concrete block prepared by using incineration fly ash and construction waste and a preparation method thereof. Background technique [0002] With the rapid development of the economy and the increasing level of urbanization, a large amount of domestic waste and construction waste are produced in cities every year. For domestic waste, in order to effectively destroy corrosive substances and pathogenic microorganisms in the waste, and reduce the amount of waste at the same time, waste incineration has been widely used because of its advantages of sterility and obvious reduction. However, the fly ash after incineration has become another problem that people think about. The incineration fly ash is the catch of the flue gas purification system and the bottom ash settled at the bottom of the flue and chimney during the incineration and disposal of dom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02
CPCC04B28/14C04B2201/50C04B2201/20C04B2201/32C04B18/10C04B18/16C04B22/064C04B7/00C04B20/0048C04B22/04C04B38/02
Inventor 陆洪彬陈竹陈婷婷张玉明朱西挺杨栋涂巍巍
Owner HAIAN INST OF HIGH TECH RES NANJING UNIV