摘要
基于正交试验的方法,分析了M/P、水胶比、粉煤灰掺量和微碳铬铁粉渣掺量对磷酸镁水泥(MPC)流动度、1 d和3 d抗压强度的影响规律,获得MPC的最佳配合比,并对其组成及微观结构进行了研究。结果表明:掺矿物掺合料的MPC的最优配合比为M/P=8、水胶比0.18、粉煤灰掺量为25%、微碳铬铁粉渣掺量为10%,其中水胶比是影响流动度的重要因素,M/P是影响抗压强度的重要因素;复掺粉煤灰和微碳铬铁粉渣的MPC的主要物相组成为未反应的MgO和MgKPO_(4)·6H_(2)O;矿物掺合料的掺入可以有效地密实MPC基体的内部结构,使其早期强度得到提高。
Based on the orthogonal test method,the effects of M/P,water-binder ratio,fly ash content and micro-carbon ferrochrome powder slag content on the fluidity,1 d and 3 d compressive strength of magnesium phosphate cement(MPC) were aralyzed.The optimum mix ratio of MPC was obtained,and the composition and microstructure of MPC were studied.The results show that the optimal mix ratio of MPC with mineral admixtures is M/P=8,water-binder ratio 0.18,fly ash content 25%,and micro-carbon ferrochrome powder slag content 10%.The water-binder ratio is an important factor affecting the fluidity,and M/P is an important factor affecting the compressive strength.The main phase composition of MPC mixed with fly ash and micro-carbon fer-rochrome slag is unreacted MgO and MgKPO_4·6H_2O.The addition of mineral admixtures can effectively densify the internal structure of MPC matrix and improve its early strength.
作者
邹金丽
顾炳伟
王景正
龚致远
ZOU Jinli;GU Bingwei;WANG Jingzheng;GONG Zhiyuan(School of Civil Engineering,and Harbor and Marine Engineering,Jiangsu Ocean University,Lianyungang 222002,China;Jiangsu Engineering Research Center of Intelligent Construction of Ocean Engineering Infrastructure,Lianyungang 222002,China)
出处
《新型建筑材料》
2024年第2期68-72,共5页
New Building Materials
关键词
磷酸镁水泥
矿物掺合料
正交试验
早期性能
微观性能
magnesium phosphate cement
mineral admixtures
orthogonal test
early performance
micro performance
