The Relationship between the Water Absorption Capacity of SAP and the Amount of Entrained Water in HPC

Abstract:

Using SAP is considered as an effective method to counteract autogenous shrinkage of HPC, but the research on the relationship between the water absorption capacity of SAP and the amount of entrained water in HPC is still unclear. In this paper, 6 SAPs with different water absorption capacity were made to discuss the workability and mechanical property of HPC with SAP when different amount of water were entrained. The results showed that the bigger distilled water absorption capacity of SAP is, the smaller the fluidity of cement paste mixed with SAP is, SAP used in HPC should own bigger synthetic pore fluid absorption capacity and smaller distilled water absorption capacity. When 0.03g water/g cement was entrained, the slump of concrete mixed with 4#, 5# and 6# SAP is the same as the slump of ref concrete, and the compressive strength of concrete mixed with 4#, 5# and 6# SAP is also the same as the compressive strength of ref concrete.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 1388-1391
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.1388
• Online since: July 2014
• Authors: Fei Guo, Wen Bin Wang, Jia Ping Liu, Qian Tian, Lei Li*
• Keywords: SAP, Water Absorption Capacity, Water Entrainment

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