生土自嵌固空心砖抗压抗折性能试验研究  

Experimental research on compressive and flexural performance of raw-soil interlocking compressed hollow brick

作　　者：王毅红[1] 刘乐[1] 王天涯 郝振奋 徐荀[1] WANG Yihong;LIU Le;WANG Tianya;HAO Zhenfen;XU Xun(School of Civil Engineering,Chang＇an University,Xi＇an 710061,China;Beijing Special Engineering Design and Research Institute,Beijing 100028,China)

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]北京特种工程设计研究院,北京100028

出　　处：《新型建筑材料》2018年第8期63-67,110,共6页New Building Materials

基　　金：国家自然科学基金项目(51478043);陕西省重点研发计划项目(2017SF-376)

摘　　要：为改进传统土坯砌体结构的缺点,分别选取水泥和麦秸为单掺改性材料,用于制作一种新型生土自嵌固空心砖。通过对各类试块进行单轴抗压和三点抗折试验,对比分析了素土和单掺改性材料试块在强度、破坏形态、变形能力等方面的差异。试验结果表明:砖的孔洞是受力薄弱部位,但与传统土坯相比,生土自嵌固空心砖有较高强度;掺入水泥能提高试块的抗压强度和抗折强度,掺入麦秸能提高试块的变形能力并改善脆性破坏特征,水泥和麦秸的最佳掺量分别为4.5%和0.2%。To change the defects of adobe masonry structure,cement and straw were applied as single modified material to prepare a new type of raw-soil interlocking hollow brick. The differences in strength,failure mode, deformability of all kinds of specimens were compared and analyzed by uniaxial compression test and three-point flexural test. The test results showed that the hole of the brick is the weak part under force,but compared with traditional adobe this kind of brick still performed higher strength. Cement can increase compressive and flexural strength of the specimen and straw can improve deformation ability and brittle failure characteristics of the specimens. The effect of cement and straw would be best when their content is 4.5% and 0.2%.

关 键 词：生土自嵌固空心砖 破坏形态 抗压强度 抗折强度 改性 

分 类 号：TU552.14[建筑科学—建筑技术科学]