长江科学院院报 ›› 2009, Vol. 26 ›› Issue (12): 93-97.

• 水工结构与材料 • 上一篇    下一篇

磷渣粉替代粉煤灰在水工混凝土中的应用研究

 林育强, 李家正, 杨华全   

  • 出版日期:2009-12-01 发布日期:2012-07-05

Research on Phosphorus Slag Powder Replacing Fly Ash in Hydraulic Concrete

 LIN  Yu-Qiang, LI  Jia-Zheng, YANG  Hua-Quan   

  • Online:2009-12-01 Published:2012-07-05

摘要: 对磷渣粉的化学成分、微观结构和形貌特征,以及磷渣粉和粉煤灰作为掺和料对胶凝材料及水工混凝土性能影响进行了试验研究。结果表明:掺磷渣粉的混凝土绝热温升显著降低,混凝土拌和物有一定程度的缓凝,有利于大体积混凝土的施工、温控和防裂;磷渣粉可提高混凝土后期强度增长率和极限拉伸值,对混凝土的抗渗、抗冻性能无不利影响;磷渣粉可部分或全部替代粉煤灰在水工混凝土中大量应用。

Abstract: Chemical composition, microstructure and morphologic feature of phosphorus slag powder, the effects of phosphorus slag powder and fly ash as admixtures on hydration heat and strength of cementitious materials, and mechanics, thermology, deformation and durability performances of hydraulic concrete were completely researched and analyzed. The results show that: phosphorus slag powder can reduce adiabatic temperature rise of concrete, which is beneficial to the construction, temperature control and anti-crack of mass concrete ; compared with concrete mixed with fly ash, concrete mixed with phosphorus slag powder has a higher strength growing rate in late age, and higher ultimate tension ; phosphorus slag powder has no adverse effect on the performances of impermeability and frost resistance of concrete. Phosphorus slag powder can replace fly ash partially or completely for application in quantity in concrete.