摘要
针对不同原料、不同制浆蒸煮方法产生的四种废液 ,通过简短的工艺回收、改性制得以木质素磺酸盐为主要成分的复合型减水剂。对其减水等性能进行了研究。其结果表明 ,掺量 2‰～ 5‰时净浆流动度为 10 9～ 174毫米 ,掺量 2‰～ 3‰时砂浆减水率为 15 .3%～ 16 .7% ,砂浆 3天、7天减水抗压强度比均大于 115 %。
Four water reducing agents,mainly composed of lignin sulphonate,were obtained from four types of pulping waste liquor derived by different materials of different pulp making methods.At the same time,the properties of water reducing were rudimentarily discussed.The results show that adding prepared water reducing agents can be used to reduce water and improve the strength of cement bonded sand mortar.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2000年第4期8-10,40,共4页
Environmental Science & Technology
基金
中国科学院生态环境研究中心技术创新项目
关键词
制浆废液
化学改性
减水剂
Pulping waste liquor
Chemical modification
Water reducing agent
