《无砂陶粒加气混凝土砌块自保温材料试验研究》》-毕业论文.doc

摘要 蒸压加气混凝土砌块已成为建筑节能新型环保墙体材料之一。它已广泛应用于各大城市的房屋建设领域。但目前在工程应用中出现的开裂是制约其在工程应用和北方地区推广的核心技术问题。本课题通过在普通粉煤灰加气混凝土中掺入陶粒制备无砂陶粒加气混凝土，解决其抗压强度、干表观密度、干燥收缩、导热系数问题，并进行机理分析和效益分析。 试验结果表明，随着陶粒掺量的增加，无砂陶粒加气混凝土的干表观密度、导热系数先略有下降后升高，抗压强度、比强度均增大；随着铝粉掺量的增加，干表观密度、导热系数逐渐降低，抗压强度和比强度先降低后升高；随着水料比的增大，干表观密度、导热系数逐渐降低，抗压强度和比强度先降低后升高；随着水泥掺量的增加，干表观密度、导热系数先增加后降低，抗压强度和比强度均逐渐增加。试验得出的最佳配合比：陶粒为80%，水料比为0.64，铝粉为1.0‰，水泥为20%。该产品干燥收缩量是普通粉煤灰加气混凝土的1/5左右。有SEM表明产物中生成大量水石榴子石、托贝莫来石。 关键词：加气混凝土 陶粒 抗压强度 干表观密度 比强度 导热系数 Abstract Autoclaved aerated concrete blocks are recognized as one of the new environmental building wall materials which adapt to protecting energy-saving. It has been widely used in the field of housing in major cities. However, emerged cracks in the engineer. Crack is a core technical problem constrained application of aerated concrete and development in the north. Therefore, the subject using common fly ash aerated concrete and ceramic to make ceramic aerated concrete without sand solutes its compressive strength, dry bulk density, drying shrinkage. Also, use the mechanism and benefit analysis. The experiment results show that: as the ceramic content increase , the ceramic aerated concrete without sand, its dry bulk density and thermal conductivity first decrease slightly and then increase, while compressive strength and specific strength increase; With the increase of aluminum content, dry bulk density and thermal conductivity decrease, compressive strength and specific strength first increase and then decrease; As water-cement ratio increase, the dry bulk density and thermal conductivity decrease, the compressive strength and specific strength first increase and then decrease; As the cement contain increase ;dry bulk density and thermal conductivity first increase then decrease , compressive strength and specific strength gradually increase. The experiment shows that the best mixture ratio: 80% ceramic ,water-cement ratio is 0.64, aluminum powder is 1.0 ‰, cement content is 20%.The drying