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玻化微珠保温砂浆性能影响因素研究
作者：杨芸，符媛媛
（武汉科技大学城市学院，湖北 武汉 430083）
摘要：研究了玻化微珠、聚苯颗粒、矿渣、聚丙烯纤维和硬脂酸钙5个组分的掺量及水灰比对玻化微珠保温砂浆性能的影响。试验结果表明：增大水灰比及增加玻化微珠、聚苯颗粒的掺量都会降低保温砂浆的干表观密度及导热系数；水灰比和玻化微珠掺量的增大均会降低保温砂浆的28 d抗压强度；随聚苯颗粒掺量的增加，保温砂浆的28 d抗压强度逐渐提高；增加矿渣和不同长度聚丙烯纤维的掺量，仅在一定范围内提高砂浆的28 d抗压强度；硬脂酸钙能显著降低保温砂浆的吸水率。最佳水灰比为2.1～2.2，玻化微珠、聚苯颗粒、矿渣、聚丙烯纤维（短纤维）和硬脂酸钙的最佳掺量分别为42%～46%、2%、10%、0.1%、2%～4%。
关键词：玻化微珠；保温砂浆；性能；影响因素
中图分类号：TU55+1.3 文献标识码：A 文章编号：1001-702X（2020）03-0139-03
Study on influencing factors of properties of thermal insulation mortar with glass bubbles
YANG Yun，FU Yuanyuan
（City College of Wuhan University of Science and Technology，Wuhan 430083，China）
Abstract：The effects of the content of glass bubbles，polybenzene particles，slag，polypropylene fiber and calcium stearate and the water cement ratio on the properties of glass bubbles insulation mortar were studied. The obtained results indicate that the dry apparent density and thermal conductivity of insulation mortar can be reduced by increasing water cement ratio and the content of glass bubbles and polybenzene particles. The increase of water-cement ratio and the content of glass bubbles can reduce the 28 d compressive strength of thermal insulation mortar，with the increase of polybenzene particle dosage，the 28 d compressive strength of thermal insulation mortar gradually increase，but the dosage of slag and different types of polypropylene fiber only increases the 28 d strength of mortar within a certain range. In addition，calcium stearate can significantly reduce the water absorption of thermal insulation mortar. The optimal water cement ratio is 2.1～2.2，and the optimal dosage of glass bubbles，polybenzene particles，slag，polypropylene fiber（staple fiber） and calcium stearate are 42%～46%，2%，10%，0.1% and 2%～4% respectively.
Key words：glass bubbles，thermal insulation mortar，properties，influencing factors