Effect of ground quartz sand on properties of high-strength concrete in the steam-autoclaved curing

Effects of many factors, such as ground quartz sand (GQS) replacement of cement, SiO2 content and specific area of GQS, and steam-curing temperature on the mechanical properties of high-strength concrete that was steam-autoclaved, were investigated. The mechanism of GQS replacement of cement was analyzed by XRD. The process adjustment and the cost of raw materials in concrete after GQS replacement of cement were also discussed. (C) 2001 Elsevier Science Ltd. All rights reserved.