纳米SiO_(2)活化磷渣水泥胶凝材料性能研究  

Study on properties of nano-SiO_(2) activated phosphorous slag cement

作　　者：李杰 邓宵 张大校 王宇帆 陈小兰 李儒光 LI Jie(Honghe Ziyan Cement Co.LTD.,Honghe 651400,Yunnan,China)

机构地区：[1]红河州紫燕水泥有限责任公司,云南红河651400 [2]湖北中科产业技术研究院有限公司,湖北黄冈438000 [3]武汉理工大学材料学院,湖北武汉430070

出　　处：《水泥》2024年第6期1-5,共5页Cement

基　　金：湖北省光谷科技创新大走廊协同创新项目(2023EGA019)。

摘　　要：大量磷渣堆积严重污染了环境,将其应用于混凝土材料中可实现固废利用,但是磷渣的引入会严重降低水泥强度,因而将纳米SiO_(2)引入到磷渣混凝土中可以实现大掺量应用磷渣资源,实现节能减排。研究中发现,磷渣掺量10%、20%和30%,随着磷渣掺量增加,对水泥砂浆的早期强度影响较大,强度显著降低;纳米SiO_(2)颗粒按照水泥用量的0.5%、1.0%、2.0%、4.0%和8.0%掺加,当掺量不超过4.0%的条件下,磷渣水泥的标准稠度用水量和凝结时间不断减少,并且强度得到了一定的改善,但是当掺量达到8.0%时,磷渣水泥的标准稠度用水量和凝结时间反而增加,对应强度也有所降低。因而,通过纳米SiO_(2)颗粒的合理引入,可以有效改善磷渣胶凝材料的活性,提高固废资源消纳,有助于环保和资源化社会发展。The accumulation of a large amount of phosphorus slag has seriously polluted the environment.Its application in concrete materials can realize the utilization of solid waste,but the phosphorus slag will seriously reduce the strength of cement.Therefore,introducing the nano-SiO_(2) into phosphorus slag concrete can realize the application of phosphorus slag resources and achieve energy saving and emission reduction.The study found that as the phosphorus slag content increases(dosage 10%,20%and 30%),the early strength of cement mortar is greatly affected,and the strength is significantly reduced.Nano-SiO_(2) particles are added according to 0.5%,1.0%,2.0%,4.0%and 8.0%of the cement dosage.When the content is no more than 4.0%,the water consumption of normal consistency and setting time of phosphorus slag cement are continuously reduced,and the strength is improved to some extent.However,when the dosage reaches 8.0%,the water consumption of normal consistency and setting time of phosphorus slag cement increase,and the corresponding strength decreases.Therefore,the reasonable introduction of nano-SiO_(2) particles can effectively improve the activity of phosphorus slag cementing materials,improve the consumption of solid waste resources,and contribute to environmental protection and resource social development.

关 键 词：纳米SiO_(2) 磷渣 水泥 胶凝材料 

分 类 号：TQ172.44[化学工程—水泥工业]