基于结构自保温的高性能页岩陶粒混凝土试验研究

为了配制出高性能页岩陶粒混凝土,以强度和导热系数为设计目标,通过正交试验,得到了强度等级不低于LC40的页岩陶粒混凝土最佳配合比,并分别研究了河砂、不同纤维对陶粒混凝土性能的影响。结果表明,河砂对混凝土强度影响不大,而钢纤维掺量为2%时,其抗压、抗折、劈拉强度均有明显提高,并优于其他纤维品种;陶粒混凝土的轴心与立方体抗压强度接近,且弹性模量较低,峰值应变与总应变较大。最后,对假定的几种结构混凝土和围护结构的保温措施,采用热工模拟计算,得到了节能率不低于65%的一体化建筑保温系统。

EXPERIMENTAL STUDY ON HIGH-PERFORMANCE SHALE CERAMSITE CONCRETE BASED ON INSULATION STRUCTURE

In order to make up high performance ceramsite concrete( HPCC) and be applied in engineering practice,the best mixture ratio of high-strength shale ceramsite concrete( HSSCC) no less than LC40 is obtained by orthogonal tests based on the indexes of strength and thermal conductivity,then the effects of sand and different fibers on physical-mechanical properties of CC are studied. The test results show that the sand has little effect on strength,but steel fibers have a great deal when added 2%,the compressive strength,splitting strength and flexural strength are all higher than ordinary one. Besides,the axial strength is similar to cube compressive strength,and the elastic modulus is lower,the peak strains and the total strains are larger. In the end,the integration system of insulation building is founded and the economy energy rate is not less than 65% by aseismic check based on the upper test results,including of the physical-mechanical properties,and the supposed several types of structure concretes and outer protective structures.