Household garbage incinerator bottom slag dry hard concrete and preparation method thereof

A technology of domestic waste incineration and dry hard concrete is applied in the field of building materials to achieve the effect of solving the problem of occupying land resources, good drying shrinkage performance, and avoiding excessive performance decline.

Inactive Publication Date: 2021-03-16
SHANGHAI RES INST OF BUILDING SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a dry hard concrete with the bottom slag of the domestic waste incinerator and its preparation method, so as to solve the problem that the bottom slag of the domestic waste incinerator cannot be applied in a large-scale and stable manner in the dry hard concrete material

Method used

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  • Household garbage incinerator bottom slag dry hard concrete and preparation method thereof
  • Household garbage incinerator bottom slag dry hard concrete and preparation method thereof
  • Household garbage incinerator bottom slag dry hard concrete and preparation method thereof

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preparation example Construction

[0036] see Figure 1 to Figure 3 , the present invention also provides the preparation method of above-mentioned dry hard concrete, comprises the following steps:

[0037] S01. The untreated domestic waste incinerator bottom slag is subjected to a pretreatment process to remove metals and impurities that are not conducive to building materials, and obtain domestic waste incinerator bottom slag that can be used to prepare dry hard concrete.

[0038] Wherein, the pretreatment process includes the following steps:

[0039] 1) Pour the untreated domestic waste incinerator bottom slag into the hopper, and then transfer it to the drum screen through the first conveyor belt, and use the water mist spraying device to spray the domestic waste incinerator bottom slag on the hopper and the first conveyor belt. Water mist spray cooling;

[0040] 2) The magnetic separation filter device on the drum screen separates the coarse metal from the crushed domestic waste incinerator bottom slag;...

Embodiment 1

[0054] A dry hard concrete with bottom slag of domestic waste incinerator, comprising the following components by mass percentage: 23.7% of bottom slag of domestic waste incinerator, 12.5% ​​of 42.5 grade Portland cement, 55.4% of stone chips, and 8.4% of water; Garbage incinerator bottom slag / (stone chip + domestic waste incinerator bottom slag) ≈ 0.3; domestic waste incinerator bottom slag dry hard concrete ratio ≈ 0.092.

[0055] The preparation method of the above-mentioned domestic waste incinerator bottom slag dry hard concrete comprises the following steps:

[0056] S01. Pretreatment of untreated domestic waste incinerator bottom slag, including the following steps:

[0057] 1) Pour the untreated domestic waste incinerator bottom slag into the hopper, and then transfer it to the drum screen through the first conveyor belt, and use the water mist spraying device to spray the domestic waste incinerator bottom slag on the hopper and the first conveyor belt. Water mist spr...

Embodiment 2

[0072] A dry hard concrete with bottom slag of domestic waste incinerator, comprising the following components by mass percentage: 0% bottom slag of domestic waste incinerator, 12.5% ​​of 42.5 grade Portland cement, 79.1% of stone chips, and 8.4% of water; Garbage incinerator bottom slag / (stone chips + domestic waste incinerator bottom slag) = 0; the water-solid ratio of dry hard concrete with domestic waste incinerator bottom slag is ≈0.092.

[0073] The preparation method of the above-mentioned domestic waste incinerator bottom slag dry hard concrete comprises the following steps:

[0074] S01. Pretreatment of untreated domestic waste incinerator bottom slag, including the following steps:

[0075] 1) Pour the untreated domestic waste incinerator bottom slag into the hopper, and then transfer it to the drum screen through the first conveyor belt, and use the water mist spraying device to spray the domestic waste incinerator bottom slag on the hopper and the first conveyor be...

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Abstract

The invention provides household garbage incinerator bottom slag dry hard concrete. The household garbage incinerator bottom slag dry hard concrete comprises the following components in percentage bymass: 0-31.6% of household garbage incinerator bottom slag, 12-13% of cement, 47.7-79.2% of stone chips and 8.3-8.5% of water. The invention also provides a preparation method of the dry hard concrete. The preparation method comprises the following steps: S01, carrying out a pretreatment process on untreated household garbage incinerator bottom slag; S02, taking the following components in percentage by mass: 0 to 31.6% of household garbage incinerator bottom slag, 12 to 13% of cement, 47.7 to 79.2% of stone chips and 8.3 to 8.5% of water; S03, uniformly mixing the household garbage incinerator bottom slag, stone chips and cement to prepare a dry material; S04, pouring the dry material and water into a mortar stirrer for stirring to obtain uniformly stirred slurry; S05, pouring the slurryinto a mold, applying 5.1 MPa constant pressure to mold the slurry, and demolding after 2 hours to obtain a concrete test block; and S06, placing the concrete test block in a standard curing chamber or a curing box with the humidity being 90 + / - 5% and the temperature being 20 + / -1 DEG C, and curing for 28 days.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to dry hard concrete with bottom slag in a domestic waste incinerator and a preparation method thereof. Background technique [0002] At present, with the rapid development of cities, the environmental problems caused by solid waste such as municipal solid waste and construction waste are becoming more and more serious. The disposal and resource utilization of solid waste has become an important problem facing urban development. At the same time, on the one hand, the whole country is facing the severe challenge of increasing shortage of natural resources such as sand and gravel. On the other hand, due to the increasing production of domestic waste and its incineration bottom slag, its disposal has become a social problem. In 2019, a total of 59.32 million tons of domestic waste was incinerated across the country, producing 5.2-7.8 million tons of slag and abou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B40/02
CPCC04B28/04C04B2201/50C04B2111/00017C04B18/10C04B14/02C04B40/0281
Inventor 王娟陈宁董庆广章志
Owner SHANGHAI RES INST OF BUILDING SCI CO LTD
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