A construction waste micropowder-based thickener and its preparation method and application
A technology of construction waste and thickener, applied in the field of building materials, can solve the problem of low utilization rate of micropowder resources, and achieve the effects of improving utilization rate of resources, lowering preparation cost and improving viscosity
Active Publication Date: 2022-03-25
WUHAN UNIV OF TECH
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Problems solved by technology
[0004] In view of this, the present invention aims to propose a construction waste micropowder-based thickener to solve the problem of low utilization rate of existing construction waste micropowder
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[0020] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.
[0021] The present invention will be described in detail below with reference to the embodiments.
[0022] Table 1 and Table 2 show the raw material ratio, wet grinding parameters and slurry consistency properties of the construction waste micropowder-based thickeners of Examples 1 to 6 of the present invention. In each embodiment, the dispersion stabilizer is a polycarboxylate water reducer, and the solid content of the polycarboxylate water reducer is 40%.
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Abstract
The invention provides a construction waste micropowder-based thickener and its preparation method and application. The construction waste micropowder-based thickener consists of the following components in terms of 100 parts by weight: construction waste micropowder: 25-40 parts, surface Modifier: 0.1-0.3 parts, dispersion stabilizer: 0.1-0.5 parts, accelerator: 0.5-1 parts, anti-mud agent: 0.5-2 parts, thickener: 0.001-0.005 parts, and the rest is water. In the present invention, the construction waste micropowder base with superfine particles is obtained by compounding the construction waste micropowder, surface modifier, dispersion stabilizer, accelerator, anti-mud agent and thickener, and adding a certain amount of water for wet grinding. Thickening agent, physical and chemical synergistic thickening effect can be realized between each component, and the viscosity of cement paste can be significantly improved. When the construction waste micropowder-based thickener of the present invention is used in cement concrete, it is 2.0%~ When the dosage is 8.0%, the viscosity of the slurry can be significantly improved, and the viscosity value of the slurry can be increased by 10% to 20%.
Description
technical field [0001] The invention relates to the technical field of building materials, in particular to a construction waste micropowder-based thickener and a preparation method and application thereof. Background technique [0002] With the continuous acceleration of urbanization in my country, a large amount of construction waste is generated during the demolition of old buildings and the construction of new buildings. For a long time, my country has used open-air stacking and direct landfill to deal with construction waste, which has brought a series of ecological and environmental problems. At present, the utilization rate of construction waste in my country is less than 10%. The sharp rise, the resource utilization of construction waste will become an investment hotspot. [0003] High fluidity, high stability, high mechanical properties, and excellent durability are important indicators for measuring cement matrix materials. The above indicators are usually achieved...
Claims
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IPC IPC(8): C04B24/38C04B103/44
CPCC04B40/0039C04B2103/44C04B18/16C04B22/16C04B22/149C04B24/122C04B24/383C04B2103/302C04B24/06C04B24/38
Inventor 谭洪波李懋高张俊杰聂康峻
Owner WUHAN UNIV OF TECH