Geopolymer concrete with thermal insulation property and preparation method thereof: Fid-Bau Portal

Geopolymer concrete with thermal insulation property and preparation method thereof

MA MINGWANG / MA CHENGLIN / WAN KAI

Relating to the technical field of concrete preparation, the invention provides a geopolymer concrete with thermal insulation performance and a preparation method thereof, and the preparation method comprises the following steps: mixing and stirring fine aggregate and a gel material to obtain a dry blend; mixing and stirring an alkali activator solution and the dry mixture to obtain slurry; mixing and stirring urea and the slurry to obtain a mixed intermediate; the mixed intermediate is poured into a mold, the pouring process comprises layered tamping and vibration, and the mold is wrapped with a sealing film; and performing standard curing on the mold filled with the mixed intermediate, performing high-temperature curing after demolding, and then performing natural curing to form the concrete. The urea is added in the concrete preparation process, so that the thermal insulation property of the geopolymer concrete can be effectively improved on the premise of ensuring the strength of the concrete. Moreover, a porous structure is formed in the concrete, so that the porosity is increased, the heat conductivity coefficient of the concrete is reduced, and the thermal insulation performance of the concrete is improved.

一种具有保温性能的地聚物混凝土及其制备方法，涉及混凝土制备技术领域，包括如下步骤:将细骨料和凝胶材料混合搅拌，得到干混料；将碱激发剂溶液和所述干混料混合搅拌，得到浆料；将尿素和所述浆料混合搅拌，得到混合中间物；将所述混合中间物浇筑至模具中，所述浇筑过程包括分层捣实和振动，用密封膜包裹所述模具；将装有所述混合中间物的所述模具进行标准养护，脱模后高温养护，然后再自然养护，形成混凝土。本申请通过在混凝土制备中加入尿素，在保证混凝土强度的前提下，可以有效提高地聚物混凝土的保温性能。并且，混凝土内部形成多孔结构，从而增加孔隙率，降低混凝土的导热系数，提高混凝土的保温性能。

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