掺合料对磷石膏基复合胶凝材料耐水性及强度的影响综述
收稿日期: 2020-05-19
网络出版日期: 2020-12-01
基金资助
国家自然科学基金项目(51968009);贵州省科技计划项目(黔科合LH字[2017]7238);贵州省科技计划项目(黔科合支撑[2018]2816);贵州省体育局、贵州省教育厅2019年度项目(GZTY2019215)
版权
Summary on effects of admixtures on water resistance and strength of phosphogypsum-based composite cementitious materials
Received date: 2020-05-19
Online published: 2020-12-01
Copyright
罗双 , 付汝宾 , 孔德文 , 谢浪 , 周银笙 , 赵砚 . 掺合料对磷石膏基复合胶凝材料耐水性及强度的影响综述[J]. 无机盐工业, 2020 , 52(11) : 6 -6 . DOI: 10.11962/1006-4990.2020-0029
Phosphogypsum contains soluble phosphorus,fluorine and other impurites,which leads to its relatively low utiliza-tion rate in construction industry.Moreover,water resistance of phosphogypsum materials is extremely poor.It is necessary to mixture other hydraulic admixtures to improve their water resistance.And different physical and chemical properties of phosphogypsum in different areas can result in some differences in mechanical properties of phosphogypsum-based composite cementitious materials.Aiming at above problems,the major types of phosphogypsum-based composite cementitious materials were introduced.Effects of fly ash,slag,quicklime and cement on water resistance and strength of different phosphogypsum-based composite cementitious materials were analyzed in detail,and the influence rules were further declared.Finally,the recommended content range of fly ash,slag,quicklime and cement in phosphogypsum-based composite cementitious materials were confirmed.
Key words： phosphogypsum; composite cementitious materials; admixtures; fly ash; slag
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