水泥改性生土砌块在复杂环境下的退化机理研究

关键字：生土砌块,改性,抗压强度,耐水性

（1.华北水利水电大学 土木与交通学院，河南 郑州  450045；2.天津城建大学 材料科学与工程学院，天津  300384）

    摘要：使用水泥、石灰等对生土砌块进行改性，分析了在不同条件下的强度变化规律，并对其机理进行了研究。结果表明：生土砌块经过水泥等材料改性后，抗压强度最高可达到15 MPa，在自然养护条件和浸水条件下可均满足使用要求，但抗冻融性能相对较差。
    关键词：生土砌块；改性；抗压强度；耐水性
    中图分类号：TU522.3          文献标识码：A          文章编号：1001-702X（2017）03-0041-04

Study on degradation mechanism of cement modified raw soil blocks in complex environment
MA Juntao1，YUN Yu1，YAN Liang1，ZHANG Lei2
（1.School of Civil Engineering and Communication，North China University of Water Resources and Electric Power，
Zhengzhou 450045，China；2.School of Materials Science & Engineering，Tianjin Chengjian University，Tianjin 300384，China）

    Abstract：The raw soil blocks are modified by cement and lime，and the strength variation regularity in different environment is analyzed. The mechanism is studied. The results show that the compressive strength of cement modified raw soil blocks may be up to 15 MPa，which still satisfies the construction requirement under natural curing and water immersion environment. However，the freezing and thawing resistance is weaker relatively.
    Key words：raw soil blocks，modified，compressive strength，water resistance