粉煤灰制备免蒸压加气混凝土配合比试验研究

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中图分类号：TU528.2 文献标志码：A

Abstract：To promote solid waste resources utilization and reduce building energy consumption，non-autoclaved aerated concrete was preparedbyusing flyash.Four-factorand four-level orthogonal experiments weredesigned toresearch effects of massfraction ofcement，mass ratioof water todry materials，massfraction of aluminum powders，and volume fraction of polypropylene fiberonfour physical performance indexes of dry density，moisture capacity，water absorption， and compresive strength of non-autoclaved aerated concrete.Optimal level groups of orthogonal experiments were determined byrange analysisand matrixanalysisoforthogonal experimentresults.Theresults showthatmassratioof waterto dry materials andmassfractionof aluminum powders are main factors affecting drydensity.Massfractionof cement is the main factor affcting moisture capacityand waterabsorption.Mas fractionof cement and massratioof water todry materials are main factors affcting compressive strength.Theoptimal proportioning oforthogonal experimentsobtained bycomprehensive range analysis and matrix analysis is mass fraction of cement of 28% ，mass ratio of water to dry materials of 0.46，mass fraction of aluminum powders of 0.22% ，and volume fraction of polypropylene fiber of 0.4% .Dry density of autoclaved aerated concrete is 634kg/m3 ，moisture capacity is 19.95% ，water absorption is 40.45% ，and compressive strength is 2.6MPa ：

Keywords：non-autoclaved aerated concrete；fly ash；proportioning；dry density；compressive strength

加气讹凝工定以硅庾材科相钙庾材科为土安原料，掺入发气剂及其他外加剂等，通过浇注成型、静停发气、切割和养护等工序制成的绿色墙体材料，具有轻质、保温、环保等优点。（剩余9258字）