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High-strength thermal insulation mortar and preparation method thereof
The invention provides high-strength thermal insulation mortar and a preparation method thereof. The high-strength thermal insulation mortar is prepared from fine aggregate, a cementing material, aerogel, a fiber admixture, an early strength agent, a water reducing agent and water, wherein the fine aggregate comprises river sand and coal gangue, and the mass mixing amount of the coal gangue is 30% of the total mass of the high-strength thermal insulation mortar; the cementing material comprises ordinary Portland cement, fly ash and silicon powder, the mass mixing amount of the fly ash is 7.06% of the total mass of the high-strength thermal insulation mortar, and the mass mixing amount of the silicon powder is 3.35% of the total mass of the high-strength thermal insulation mortar; the mass mixing amount of the aerogel is 0.26% of the total mass of the high-strength thermal insulation mortar; the fiber admixture comprises basalt fibers and polypropylene fibers, the volume mixing amount of the basalt fibers is 0.05% of the total volume of the high-strength thermal insulation mortar, and the volume mixing amount of the polypropylene fibers is 0.45% of the total volume of the high-strength thermal insulation mortar. The high-strength thermal insulation mortar has a low heat conductivity coefficient, and meets the strength requirement of long-term support concrete of a high-ground-temperature tunnel at the same time.
本发明提供一种高强度隔热砂浆及其制备方法，高强度隔热砂浆由细骨料、胶凝材料、气凝胶、纤维掺料、早强剂、减水剂和水组成；其中，细骨料包括河砂和煤矸石，煤矸石的质量掺量为高强度隔热砂浆的总质量的30％；胶凝材料包括普通硅酸盐水泥、粉煤灰和硅粉，粉煤灰的质量掺量为高强度隔热砂浆的总质量的7.06％，硅粉的质量掺量为高强度隔热砂浆的总质量的3.35％；气凝胶的质量掺量为高强度隔热砂浆的总质量的0.26％；纤维掺料包括玄武岩纤维和聚丙烯纤维，玄武岩纤维的体积掺量为高强度隔热砂浆的总体积的0.05％，聚丙烯纤维的体积掺量为高强度隔热砂浆的总体积的0.45％。本发明的高强度隔热砂浆不仅具备较低的导热系数，同时满足高地温隧道长期支护混凝土的强度要求。
High-strength thermal insulation mortar and preparation method thereof
The invention provides high-strength thermal insulation mortar and a preparation method thereof. The high-strength thermal insulation mortar is prepared from fine aggregate, a cementing material, aerogel, a fiber admixture, an early strength agent, a water reducing agent and water, wherein the fine aggregate comprises river sand and coal gangue, and the mass mixing amount of the coal gangue is 30% of the total mass of the high-strength thermal insulation mortar; the cementing material comprises ordinary Portland cement, fly ash and silicon powder, the mass mixing amount of the fly ash is 7.06% of the total mass of the high-strength thermal insulation mortar, and the mass mixing amount of the silicon powder is 3.35% of the total mass of the high-strength thermal insulation mortar; the mass mixing amount of the aerogel is 0.26% of the total mass of the high-strength thermal insulation mortar; the fiber admixture comprises basalt fibers and polypropylene fibers, the volume mixing amount of the basalt fibers is 0.05% of the total volume of the high-strength thermal insulation mortar, and the volume mixing amount of the polypropylene fibers is 0.45% of the total volume of the high-strength thermal insulation mortar. The high-strength thermal insulation mortar has a low heat conductivity coefficient, and meets the strength requirement of long-term support concrete of a high-ground-temperature tunnel at the same time.
本发明提供一种高强度隔热砂浆及其制备方法，高强度隔热砂浆由细骨料、胶凝材料、气凝胶、纤维掺料、早强剂、减水剂和水组成；其中，细骨料包括河砂和煤矸石，煤矸石的质量掺量为高强度隔热砂浆的总质量的30％；胶凝材料包括普通硅酸盐水泥、粉煤灰和硅粉，粉煤灰的质量掺量为高强度隔热砂浆的总质量的7.06％，硅粉的质量掺量为高强度隔热砂浆的总质量的3.35％；气凝胶的质量掺量为高强度隔热砂浆的总质量的0.26％；纤维掺料包括玄武岩纤维和聚丙烯纤维，玄武岩纤维的体积掺量为高强度隔热砂浆的总体积的0.05％，聚丙烯纤维的体积掺量为高强度隔热砂浆的总体积的0.45％。本发明的高强度隔热砂浆不仅具备较低的导热系数，同时满足高地温隧道长期支护混凝土的强度要求。
High-strength thermal insulation mortar and preparation method thereof
一种高强度隔热砂浆及其制备方法
ZHU YONG (author) / LIU ZHONGBO (author) / ZHOU HUI (author) / ZHANG CHUANQING (author)
2024-04-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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