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摘要:
以脱硫石膏、膨胀珍珠岩为主要原材料制备膨胀珍珠岩/脱硫石膏复合材料，利用单因素实验法研究了材料制备方式、试件振捣次数、膨胀珍珠岩掺量等对其性能的影响，并确定出较优制备方式。结果表明，采用脱硫石膏与柠檬酸先混合搅拌均匀，再加入膨胀珍珠岩搅拌，最后加入水搅拌，直接成型，当膨胀珍珠岩的掺量为2.0%时，制备的复合材料绝干抗折强度、绝干抗压强度、饱水抗折强度和饱水抗压强度分别为3.83 MPa、8.92 MPa、1.66 MPa和4.26 MPa，干表观密度为1.166 g/cm3，满足规范使用要求。
Abstract:The expanded perlite/desulphurized gypsum composite material was prepared with desulphurized gypsum and expanded perlite as the main raw materials. The single factor test method was used to study the effects of the material preparation method, the number of vibrations of the specimen, the amount of expanded perlite on their performance, and the optimal preparation method was determined. The results show that the desulfurized gypsum and citric acid are mixed and stirred well first, then the expanded perlite is added to stir, and finally the water is added and stirred to form the specimen directly. When the content of expanded perlite is 2.0%, the absolute dry flexural strength, absolute dry compressive strength, saturated water flexural strength and saturated water compressive strength of the composite materials are respectively 3.83 MPa, 8.92 MPa, 1.66 MPa and 4.26 MPa, the dry apparent density is 1.166 g/cm3, which met the requirements of the specification.
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Key words:
- Desulfurization gypsum /
- Expanded perlite /
- Preparation /
- Performance
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