酸激发磷石膏地聚合物胶凝材料基本物理性能研究  

Study on Basic Physical Properties of Acid-stimulatedPhosphogypsum Geopolymer Gelling Materials

作　　者：蔡林 徐闫 刘杰胜 谭晓明[1,2] CAI Lin;XU Yan;LIU Jiesheng;TAN Xiaoming(Wuhan Polytechnic University,Wuhan,Hubei 430023,China)

机构地区：[1]武汉轻工大学土木工程与建筑学院,湖北武汉430023 [2]武汉轻工大学海洋工程结构防护材料中试平台,湖北武汉430023

出　　处：《山东商业职业技术学院学报》2024年第1期111-116,共6页Journal of Shandong Institute of Commerce and Technology

基　　金：湖北省创新群众项目(2022CFA011)。

摘　　要：以原状磷石膏、水泥、偏高岭土等为主要原料,磷酸或乙酸为激发剂,制备了酸激发磷石膏胶凝材料并探究其基本物理力学性能,研究了酸激发剂的种类及掺量对胶凝材料抗压性能和抗折性能的影响。研究结果表明:磷石膏、偏高岭土、水泥的质量比为45∶15∶40,掺加量为1-5%的磷酸或乙酸,制备的胶凝材料具有较好的抗压抗折性能;掺加量为4%的磷酸制备的胶凝材料28天龄期的抗压强度达到了30.97MPa,抗折强度3.64 MPa;掺加量为4%的乙酸制备的胶凝材料28天龄期的抗压强度19.03MPa,抗折强度达到了4.08 MPa;在自然养护条件下,磷酸激发的磷石膏胶凝材料的激发效果优于乙酸。In this paper,the acid-stimulatedphosphogypsum cementing material was prepared with original phosphogypsum,cement and metakaolin as the main raw materials and phosphoric acid or acetic acid as the activator,and its basic physical and mechanical properties were investigated.The effects of the type and dosage of acid activator on the compressive and flexure properties of the cementing material were studied.The results show that the mass ratio of phosphogypsum,metakaolin and cement is 45∶15∶40,and the amount of 1-5%phosphoric acid or acetic acid is added,the prepared cementing material has good compressive and flexural properties.The compressive strength and flexural strength of the cementing material with 4%phosphoric acid at 28 days age reached 30.97 MPa and 3.64MPa.The compressive strength and flexural strength of the cementing material with 4%acetic acid at 28 days age are 19.03MPa and 4.08 MPa respectively.Under the condition of natural curing,the excitation effect of phosphogypsum gelling material excited by phosphoric acid is better than that of acetic acid.

关 键 词：磷石膏 地聚合物 酸性激发剂 抗压强度 抗折强度 

分 类 号：TQ177.62[化学工程—硅酸盐工业]