PVA-DSECC抗压与抗折强度关系
Relationship between Compressive Strength and Flexural Strength of PVA-DSECC
摘要:
采用聚乙烯醇纤维(Polyvinyl Alcohol Fiber)制备高延性纤维增强水泥基复合材料(Engineered Ce-mentitious Composite) (简称PVA-ECC),具有多裂缝开裂、高韧性、高延展性等特性。试验采用沙漠砂代替部分普通河砂制备PVA-ECC (简称PVA-DSECC),对PVA-DSECC试块进行抗压、抗折强度测试。建立抗压强度与抗折强度关系式;分析龄期对关系式中参数a的影响,参数a随龄期的增加而增大。
Abstract:
The Engineered Cementitious Composite (PVA-ECC) is prepared by using polyvinyl alcohol fiber, which has the characteristics of multi-crack cracking, high toughness and high ductility. The test uses desert sand instead of some common river sand to prepare PVA-ECC (referred to as PVA-DSECC), and the PVA-DSECC test block is tested for compression and flexural strength. The relationship between compressive strength and flexural strength is established. The influence of age on the parameter a in the equation is analyzed, and the parameter a increases with the increase of the age.
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