Preparation and performance of polycarboxylate superplasticizer with high slump retention capability

A new type of polycarboxylate superplasticizer with high slump retention capability was prepared which can reduce the slump loss of concrete mixture.The results of concrete test show that the polycarboxylate superplasticizer we prepared(TB) has good cement compatibility and excellent slump retention capability even in low dosage,and its slump retention capability is also excellent in concrete with small slump.But its water reducing rate is slightly less than ordinary polycarboxylate superplasticizer,which can be compensated by blending these superplasticizers mentioned.