聚丙烯酸类分散剂对碱激发矿渣基胶凝材料的强度影响

Influence of polyacrylate dispersants on strength of alkali- activated slag and kaolin based geoploymers

研究了聚丙烯酸类分散剂对碱激发矿渣高岭土基地质聚合物胶凝材料的强化增韧性能,结果表明：聚丙烯酸钠可对碱激发矿渣高岭土基地质聚合物强化增韧,掺入聚丙烯酸铵分散剂的碱激发矿渣高岭土基地质聚合物胶凝材料的抗折和抗压强度均没有提高,且抗折和抗压强度随聚丙烯酸铵掺量的增大而下降,XRD表明各组试样在3~28d龄期内均没有形成新的矿物晶相,仍然为无定形的胶凝材料。

The reinforcement and toughening experiments on alkali-activated slag and kaolin based geopolymers were studied utilizing a series of polyacrylate dispersant.Results showed that sodium polyacrylate dispersant can be used to reinforce and toughen alkali-activated slag and kaolin based geopolymerst,he compressive and flexural strength of the geopolymer incorporated ammonium polyacrylate dispersant decreased comparing to the corresponding geopolymer without itt,he more mix amount of ammonium polyacrylate dispersantt,he lower compressive and flexural strength.X-ray diffraction proved that the samples were amorphous binder without new mineral from 3 d to 28 d ages.