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Research on the Rheological Model of Cement Paste with Large Fluidity(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2021年03期
Page:
20-23
Research Field:
·物理学·
Publishing date:

Info

Title:
Research on the Rheological Model of Cement Paste with Large Fluidity
Author(s):
Huang He; Jiang Yaqing; Pan Tinghong; Ji Xuping
College of Mechanics and Materials of Hohai University,Nanjing 211100,China
Keywords:
fresh cementitious materials; rheological properties; rheological model; polycarboxylic superplasticizers
PACS:
TU528
DOI:
10.3969/j.issn.1001-4616.2021.03.004
Abstract:
This paper aims at studying the rheological parameters model of fresh cementitious materials with polycarboxylic superplasticizers. Rheological properties of the high fluidity cement paste were measured by RST-SST rotational rheometer,and the rheological parameters obtained from the empirical model were compared with those from the theoretical model.The results show that the modified Bingham model is more applicable to high fluidity cement paste,the empirical viscosity values obtained from the Bingham model are more consistent with the theoretical viscosity of the paste and its viscosity parameters can be used to characterise the viscosity values of the paste.The parameters in the modified Bingham model satisfy a quantitative relationship with the theoretical viscosity of the paste:η=η1+100c.

References:

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Last Update: 2021-09-15