Study on the Rheological Properties

• Main Authors: Huang, Io Sam, 黃永盛
• Other Authors: Yen Tsong
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/00757601838210252493

碩士 === 國立中興大學 === 土木工程學系 === 86 === Till now, most of test methods used to determine the workability and consistency of concrete are only available under specific conditions, by they are not interchangeable. Therefore, some researches have been made to describe the deformation properties by using the rheological test method which interprets the deformation of fresh concrete as shear stress-shear rate relationships. Since high performance concrete (HPC) has excellent fluid consistency, it should more suitable display the deformation properties by using the rheological test method. In this study, the self-developed rheometer was used for the testing of fresh HPC. The variables include the proportion of cementitious material, the filling ratios of sand and the aggregate content. The result shows that three sets, appropriate mix proportions of HPC are evaluated to have good rheological behavior . Increase of paste content is advantageous to the workability. Moreover, it can be evaluated by means of the square correlation (R2) that the HPC will have good rheological property, when it falls in the range of G≦0.05 and h≦0.01. So that it will also meet the domestic requirements of HPC in slump and flow value.