Influences of Micropowder Gradation on Rheological Properties of Cement-Based Composite Pastes

Jian Qing Gong; Han Ning Xiao; Zheng Yu Huang; Jiu Su Li; Jing Nie; Dan Mao

doi:10.4028/www.scientific.net/KEM.353-358.1398

Paper Titles

FRP Fracture Simulation Using Parallel Processing on a PC Cluster
p.1382

Time-Temperature-Stress Equivalence Applied to Accelerated Characterization of Creep Behavior of Viscoelastic Polymer
p.1386

Microstructure and Mechanical Properties of High Strength Al₂O_3p/6061Al Composites
p.1390

Effects of Packing Density of Micropowders on the Compressive Strength of Cement Pastes
p.1394

Influences of Micropowder Gradation on Rheological Properties of Cement-Based Composite Pastes
p.1398

Mechanical Properties of SiC_p/Cu Composites Prepared by Electric Conduction Sintering
p.1402

Stress-Strain Response in SiC/SiC Composites under Cyclic Loading
p.1406

Study on Solvent Debinding Process of Powder Injection Molded Ti(C, N)-Based Cermets
p.1410

Preparation of Novel Aluminum Hybrid Composite Containing Aluminum Borate Whiskers and Carbon Nanotubes
p.1414

HomeKey Engineering MaterialsKey Engineering Materials Vols. 353-358Influences of Micropowder Gradation on Rheological...

Influences of Micropowder Gradation on Rheological Properties of Cement-Based Composite Pastes

Abstract:

The rheological parameters of cement pastes were investigated by varying the type and content of micropowders and the ratio of water to binder. Compressible packing model was used to calculate the packing density and to evaluate the influence of micropowders gradation on the rheological properties of fresh cement pastes. Results indicate that the higher the packing density is, the lower the yielding shear stress and plastic viscosity will be. When the ratio of water to binder is less than 0.20, the cement paste with 15% UFA and 15% SF has highest packing density and lowest yielding shear stress and plastic viscosity, which is beneficial to the workability of ultra-high performance concrete.