Study on the Synthesis of EH-lignosulfonate and its Application in Cement and Concrete
A novel lignin derivatives EH-lignosulfonate (EHLS) was prepared and its application as a superplasticizer (SP) in concrete was studied. The functional groups of EHLS were characterized by FT-IR analysis. A comparative experiment on the fluidity of cement with EHLS and traditional Lignosulfonate (LS, prepared from the black liquid of paper mill) was carried out. Moreover, the water reducing rate and the compressive strength of concrete with EHLS were investigated. The FT-IR spectra show that EHLS contains many functional groups like hydroxyl, sulfonate and carboxyl, which leads to the adsorption of EHLS on cement particles. Due to the large adsorption amount of EHLS on cement surface, the water-reducing property and the adaptability of EHLS are superiors to that of LS.
superplasticizer EH-lignosulfonate adsorption adaptability
Rongkai Liu Run Fang Xiansu Cheng
College of Material Science and Engineering, Fuzhou University, No.2 Xueyuan Road, Fuzhou 350108, Ch College of Material Science and Engineering, Fuzhou University, No.2 Xueyuan Road, Fuzhou 350108, Ch
国际会议
6th Asian Symposium on Polymers in Concrete(第六届亚洲聚合物混凝土国际会议)
上海
英文
424-430
2009-10-29（万方平台首次上网日期，不代表论文的发表时间）