铜渣基磷酸盐胶凝材料的制备及其性能研究  

Preparation of Iron Phosphate Cementitious Material using Copper Slag

作　　者：贾行伟 宋向荣[1] 罗中秋[1] 周新涛[1] 王敬冬 李娜秋 JIA Hang-wei;SONG Xiang-rong;LUO Zhong-qiu;ZHOU Xin-tao;WANG Jing-dong;LI Na-qiu(School of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,Chin)

机构地区：[1]昆明理工大学化学工程学院,昆明650500

出　　处：《硅酸盐通报》2018年第5期1503-1508,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51662024);昆明理工大学引进人才科研启动基金(KKSY201605021);昆明理工大学分析测试基金(2016T20160009);云南科技厅青年基金(2017FD093);云南教育厅资助性项目(2017ZZX147)

摘　　要：利用富含铁氧化物的铜渣与磷酸二氢铵(ADP)在常温下制备了凝固速度适中、早期强度高的磷酸盐胶凝材料。探究了铜渣/磷酸二氢铵(CS/ADP,质量比)和缓凝剂(硼砂)掺量等因素对胶凝材料硬化体力学性能的影响。结果表明:当CS/ADP=4.0时,材料力学性能最高,1 d和28 d抗压强度分别为31.7 MPa和42.8 MPa;随着硼砂掺量的增加,胶凝材料初凝时间延长,材料力学性能呈降低的趋势。采用XRD、SEM和FT-IR等手段对材料微观结构及物相组成进行分析,其物相组成主要为FeNH_4HP_3O_(10),NH_4FeP_2O_7和(NH_4)_2FeP_2O_7和Fe_2SiO_4结晶相,具有较为致密的微观结构。Iron phosphate cementitious material（ IPCM） was prepared through the reaction between iron（ II） oxide-rich copper slag（ CS） and ammonium dihydrogen phosphate（ ADP）. The influences of factors such as the copper slag to ammonium dihydrogen phosphate（ CS/ADP） mass ratio and the dosage of the retarders（ borax） on the compressive strength of IPCM materials were investigated. The results showed that when CS/ADP = 4. 0,the compressive strengths of the samples cured at 1 d and 28 d reached 31. 7 MPa and 42. 8 MPa,respectively. With the increase of the addition of borax,the setting time increased and the compressive strength decreased gradually. The hydration products were characterized by means of X-ray diffraction（ XRD）,fourier transform infrared（ FT-IR） and scanning electronic microscopic（ SEM）. The results indicated that IPCM were mainly composed of FeNH4HP3O（10）,NH4FeP2O7,（NH4）2FeP2O7 and Fe2SiO4 and had tense microstructure.

关 键 词：铜渣 磷酸盐胶凝材料 磷酸二氢铵 制备 

分 类 号：TU528[建筑科学—建筑技术科学]