Preparation for retarding and high early strength concrete

• DOI: 10.1007/s11595-015-1228-0
• Publication Date: 2015-07-28T20:43:16Z
• Authors: Zhijian Hu; Hao Feng; Xuefei Wang
• Keywords: Superplasticizer; Plasticizer; Shrinkage

The primary objective of this research was to determine optimum dosage of mixing concrete containing plasticizers and fly ash, consistent with desirable structural grade concrete properties. Factorial tests were also conducted to investigate the four main factors: water-cementing materials ratio, water content, content of superplasticizers (SP) and fly ash content. It was found that the requirement for setting time played the dominant role in shrinkage and anti-cracking, and fly ash played a critical role in workability and reducing heat of hydration but showed insignificant effects on slump, early strength and initial setting time of concrete.