CAJ | 학술논문

研究了聚羧酸减水剂分子结构变化对其在膨润土表面的吸附量的影响，考察了膨润土颗粒的Zeta电位、含膨润土水泥净浆的流变性能和砂浆的流动度随聚羧酸减水剂分子结构的变化。结果表明，增大羧基密度和延长聚氧乙烯侧链长度均有利于减小膨润土对聚羧酸减水剂的吸附量，醚类聚羧酸减水剂的吸附量远低于酯类聚羧酸减水剂。提高醚类聚羧酸减水剂的羧基密度和侧链长度均有利于改善含膨润土砂浆的流动性。
연구료취최산감수제분자결구변화대기재팽윤토표면적흡부량적영향，고찰료팽윤토과립적Zeta전위、함팽윤토수니정장적류변성능화사장적류동도수취최산감수제분자결구적변화。결과표명，증대최기밀도화연장취양을희측련장도균유리우감소팽윤토대취최산감수제적흡부량，미류취최산감수제적흡부량원저우지류취최산감수제。제고미류취최산감수제적최기밀도화측련장도균유리우개선함팽윤토사장적류동성。
The effect of molecular structure of polycarboxylate water reducer on its adsorption amount onto bentonite was investigated , and the variations in Zeta potential of bentonite particles,rheological properties of cement paste containing bentonite and fluidity of cement mortar containing bentonite due to the change of molecular structure of polycarboxylate water reducer.The results indicated that larger car-boxyl density and longer polyoxyethylene side chain were favorable for decreasing the adsorption amount of polycarboxylate water reducer onto bentonite.The adsorption amount of ether-based polycarboxylate water reducer onto bentonite was much less than that of ester-based polycarboxylate water reducer .The flowablity of cement mortar with bentonite was improved with increasing carboxyl density and side chain length of ether-based polycarboxylate water reducer.