Application of ultra retarded-releasing polycarboxylate superplasticizer in different concretes
CHE Wenxiu
LI Xiaoning
LI Ting
FAN Deke
ZHU Yuxue
Abstract：In this paper,a novel ultra retarded-releasing polycarboxylate superplasticizer was prepared by the hydrogen perox-ide-VC initiator system at room temperature using polyisobutylene alcohol(HPEG),acrylic acid,acrylamide(AM) and unsaturated ester,named SR-1. The application results in low-slump concrete,machine-made sand concrete and high-fluid concrete show that SR-1 has excellent sustained-release properties and good adaptability,which can effectively solve the slump retention of the low-slump concrete,reduce the slump loss of high powder content of concrete and ensure long-distance pumping concrete long-term retention. In addition,SR-1 has no adverse effect on the setting time and strength of concrete.
Keywords：ultra retarded-releasingpolycarboxylate superplasticizerconcrete
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 71-73 )