磷渣粉在成都地区商品混凝土中的应用研究

Research on Application of Phosphorus Slag in Ready Mixed Concrete in Chengdu Area

基于降低生产成本的需要开展了磷渣粉在商品混凝土中的应用研究。在综合考虑商品混凝土性能要求、磷渣粉性能特点和配合比经济可行性后,采用了磷渣粉等量替代部分水泥而不改变配合比其他参数的方案,结果表明:在已掺加18%~20%磨细灰的C30和C35混凝土中可分别再掺入30~70 kg/m^(3)和40~80 kg/m^(3)磷渣粉,其性能仍满足要求,且按照2021年度夏秋季市场价计算的每m^(3)原材料成本可降低9~24元。但应根据气温变化和工程结构类型对磷渣粉掺量进行动态调整。

This paper carries out a research on the application of phosphorous slag in ready mixed concrete aiming at reducing the production cost of concrete.Taking into consideration the performance requirements for ready mixed concrete,the characteristics of phosphorous slag,and the economic feasibility of the mix design,cement is partially replaced with the same amount of phosphorous slag while keeping the other parameters of the mix design unchanged.The research shows that when 30~70 kg/m^(3),40~80 kg/m^(3) of phosphorous slag is mixed respectively into concrete C30 and C35,which already contain 18%to 20%of grinded fly ash,the performance requirements for the concrete can still be met,meanwhile CNY 9 to 24 per m^(3) can be saved in material cost referring to the market price in summer and autumn of the year 2021.The mixing amount of phosphorous slag should be adjusted properly according to the variation of ambient temperature and the type of concrete structures.