文献类型：期刊文献

英文题名：Reaction mechanism analysis of phosphorus slag - Fly ash-phosphorus gypsum - Cement foamed concrete

作者：Liu, Qiumei Li, Caiyu

第一作者：刘秋美

机构：[1] Guizhou Institute of Technology, Guizhou, Guiyang, 550003, China; [2] Zunyi Medical University, Guizhou, Zunyi, 563000, China

第一机构：贵州理工学院

年份：2020

卷号：774

期号：1

外文期刊名：IOP Conference Series: Materials Science and Engineering

收录：EI(收录号：20201808593210)

语种：英文

外文关键词：Phosphorus - Concrete products - Hydration - Gypsum - Shrinkage - Slags - Fly ash - Cements

摘要：In this study, phosphorous slag powder, fly ash and cement were used as composite cementing materials, and phosphogypsum was used as the activator of phosphorous slag powder and fly ash to stimulate their activity. The hydration reaction of cement, phosphorus slag powder, fly ash and phosphogypsum was studied. The results show that the hydration products of cement, cement + phosphorous slag powder, cement + phosphorous slag powder + fly ash, and cement + phosphorous slag powder + fly ash + phosphorous gypsum have the same mineral composition but different relative content. The hydration samples of cement, cement + phosphorous slag powder, cement + phosphorous slag powder + fly ash, and cement + phosphorous slag powder + fly ash + phosphogypsum have certain differences in microstructure and quantity, especially ettringite. Cement hydration can stimulate the activity of phosphorus slag powder and fly ash, in turn, the addition of phosphorus slag powder, fly ash and phosphogypsum can promote the hydration process of cement, improve the quality of hydration products, and improve the density of concrete structure. ? 2020 Institute of Physics Publishing. All rights reserved.