All-solid-waste foam concrete and preparation method thereof

A waste foam and concrete technology, applied in the field of concrete, can solve the problems of foam concrete such as difficulty in forming, slow strength development, foam rupture, etc., and achieve the effects of improving compressive strength, solving slow development, and good working performance

Active Publication Date: 2021-05-18
WUHAN UNIV OF TECH
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Problems solved by technology

However, at present, under normal temperature excitation, the early strength of the prepared foamed concrete develops slowly, and the foamed concrete is more difficult to form when it is excited by steaming oxygen or strong alkali, because it will affect the foam, causing the foam to burst faster and cause collapse. Waste foam concrete is a difficult problem in the existing field

Method used

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  • All-solid-waste foam concrete and preparation method thereof
  • All-solid-waste foam concrete and preparation method thereof
  • All-solid-waste foam concrete and preparation method thereof

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Embodiment 1-9

[0029] To prepare all solid waste foam concrete, the specific steps are as follows:

[0030] Weigh a certain amount of slag and add it to the wet mill, then add water with a mass of 0.5 times the mass of the slag, then add sodium citrate with a mass of 0.001-0.0015 times the mass of the slag, and finally add 2.8-3.3 times the mass of slag. Zirconium grinding body, the grinding body gradation is 10mm: 8mm: 5mm: 3mm = 1:4:4:1, after grinding at a rate of 400-500rpm / min for 50-65min, sieved to get three kinds of median particle size of 2 -3μm wet grinding ultrafine slag, denoted as A, B, C. The ratio design of wet grinding ultrafine slag is shown in Table 1.

[0031] Table 1 Proportion design of wet grinding ultrafine slag

[0032]

[0033] The proportioning design of all solid waste foamed concrete materials is shown in Table 2. According to the material proportioning design in the table, the compound foaming agent (protein-based foaming agent FP-180: ammonium sulfate: wate...

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Abstract

The invention relates to all-solid-waste foam concrete and a preparation method thereof. The concrete comprises the following raw material components in percentage by mass: 6-12% of wet-milled superfine slag, 18-30% of slag, 4-10% of a compound activator, 32-40% of iron tailings, 4.65-5.27% of a compound foaming agent, 0.078-0.082% of a compound foam stabilizer and the balance of water. The light-weight and high-strength all-solid-waste foam concrete is prepared from the wet-ground superfine slag, the phosphogypsum, the steel slag, the iron tailings and other solid wastes as main raw materials under the action of the compound foaming agent and the compound foam stabilizer, the dry density grade of the provided all-solid-waste foam concrete can reach A06, the 28d compressive strength grade can reach C3.0, and the development requirements of light weight and high strength of the foam concrete are met.

Description

technical field [0001] The invention belongs to the technical field of concrete using quarrying, mining or similar waste materials as fillers, and relates to an all-solid waste foam concrete and a preparation method thereof. Background technique [0002] Due to the use of Ordinary Portland Cement (OPC) as the cementitious material in traditional foamed concrete, it shows some shortcomings such as heavy pollution, high energy consumption, low strength and slow growth in production practice. In order to meet the development requirements of light-weight and high-strength foam concrete, researchers proposed the technical idea of ​​using early-strength and fast-hardening alkali-activated slag cementitious materials to prepare high-strength foam concrete. Alkali slag cement has unique advantages such as convenient preparation, energy saving and waste utilization, high matrix strength and rapid growth. possible. [0003] Blast furnace slag is a kind of waste slag discharged from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/10C04B7/147C04B111/40
CPCC04B28/006C04B38/106C04B7/147C04B2201/20C04B2201/50C04B2111/40C04B2111/00017C04B24/06C04B24/14C04B22/147C04B2103/48Y02P40/10
Inventor 谭洪波李光焰邓秀峰郑正旗张俊杰马保国李相国蹇守卫黄健
Owner WUHAN UNIV OF TECH
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