• Bulletin of the Chinese Ceramic Society
  • Vol. 42, Issue 11, 3836 (2023)
JIANG Aiguo1、*, YANG Weibin1、2, and CAI Jie1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
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    DOI: Cite this Article
    JIANG Aiguo, YANG Weibin, CAI Jie. Effect of SAP on Properties of High Performance Engineered Cementitious Composites[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(11): 3836 Copy Citation Text show less

    Abstract

    High shrinkage is one of the bottlenecks limiting the large-scale engineering application of high performance engineered cementitious composites (HP-ECC). This work alleviated the shrinkage of HP-ECC by introducing superabsorbent polymers (SAP). The effects of different amounts of SAP on the compressive strengthflexural strengthtensile propertiesautogenous shrinkage and dry shrinkage properties of HP-ECC were investigated. Scanning electron microscopy (SEM) was used to observe the changes in fiber surface morphology after stretching of HP-ECC caused by SAP. The results show that the addition of SAP reduces the compressive strength and flexural strength of HP-ECC and alleviates autogenous shrinkage and dry shrinkageand the autogenous shrinkage and dry shrinkage decreases with the increase of SAP content. MoreoverSAP reduces the tensile strength of HP-ECC and increases the tensile strain of HP-ECC. The incorporation of SAP reduces the fracture toughness of the matrixmaking it more prone to microcracksthereby improving the strain hardening behavior and multiple cracking of HP-ECC. It is observed that with the increase of SAP contentthe surface morphology of the fibers as they are pulled out of the matrix becomes smootherindicating a decreasing in fiber matrix interface adhesion.
    JIANG Aiguo, YANG Weibin, CAI Jie. Effect of SAP on Properties of High Performance Engineered Cementitious Composites[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(11): 3836
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