玻璃纤维水泥土强度及抗硫酸盐侵蚀性能试验研究  

Experimental investigation on the strength behavior and sulfate resistance of glass fiber cement soil

作　　者：孔希红 KONG Xihong(Shanxi First Construction Group Co.Ltd.,Taiyuan 030012,China)

机构地区：[1]山西一建集团有限公司,山西太原030012

出　　处：《新型建筑材料》2020年第4期57-59,64,共4页New Building Materials

摘　　要：通过无侧限抗压强度试验,探究水泥、粉煤灰、玻璃纤维掺量、硫酸盐侵蚀对水泥土抗压强度的影响规律。研究发现:水泥掺量与水泥土抗压强度成正比关系。粉煤灰掺量适当时(不超过6%)可以提高水泥土抗压强度,粉煤灰对水泥土强度增长作用主要在于粉煤灰的微集料效应和活性效应。玻璃纤维掺量为0.2%时,水泥土抗压强度最高,玻璃纤维对水泥土强度的贡献主要在于玻璃纤维的加筋作用。受不同浓度Na2SO4溶液侵蚀作用后,随着侵蚀时间的延长,水泥土抗压强度均先提高后降低。Through unconfined compressive strength test,the influence of cement,fly ash,glass fiber content and sulfate erosion on the compressive strength of cement-soil was explored.It is found that the change of cement content is proportional to the compressive strength of cement-soil.When the content of fly ash is appropriate(no more than 6%),the compressive strength of cement-soil can be improved.The effect of fly ash on the strength growth of cement-soil is mainly due to the micro-aggregate effect and activity effect of fly ash.When the content of glass fiber is 0.2%,the compressive strength of cement reaches the maximum value.The contribution of glass fiber to the strength of cement soil is mainly due to the reinforcement of glass fiber.After being eroded by Na2SO4 solution of different concentration,the compressive strength of cement-soil increases first and then decreases with the increase of erosion time.

关 键 词：玻璃纤维 水泥土 无侧限抗压强度 硫酸盐侵蚀 

分 类 号：TU521.3[建筑科学—建筑技术科学]