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为弥补传统秸秆建筑材料在抗压强度、防火性能、保温能力等方面的不足,本实验将秸秆掺入地质聚合物中合成一种新型复合保温建筑材料,研究了不同秸秆含量对材料保温性能的影响,并考察了材料的耐高温性能。结果表明:秸秆地质聚合物具有良好的保温性能,秸秆掺量由1%增至6%时,材料的导热系数由0.0981 W/m·K减至0.0692 W/m·K。秸秆掺入量为4%时,抗压强度为32.78 MPa。耐高温实验结果显示,当煅烧温度低于250℃时,地质聚合物对秸秆具有一定的保护作用。当材料在600℃温度下煅烧120 min后,其抗压强度依然达到35.94MPa。温度在800℃以内材料具有稳定的矿物组成,热稳定性良好。
In order to make up for the shortcomings of the traditional straw building materials in compressive strength, fire-proof performance and thermal insulation ability, straw was incorporated into the geopolymer to synthesize a new type of composite insulation building materials, and the effects of different straw contents on the thermal insulation properties Influence, and investigated the material’s high temperature performance. The results showed that straw geopolymer had good thermal insulation properties. The thermal conductivity decreased from 0.0981 W / m · K to 0.0692 W / m · K when the content of straw increased from 1% to 6%. When straw incorporation is 4%, compressive strength is 32.78 MPa. The results of high temperature experiments show that when the calcination temperature is lower than 250 ℃, the geopolymer has a certain protective effect on straw. When the material is calcined at 600 ℃ for 120 min, its compressive strength still reaches 35.94MPa. The material has a stable mineral composition at temperatures below 800 ° C and good thermal stability.