TY - GEN
T1 - Optimization of self-consolidating pastes containing limestone powder and chemical admixtures
AU - Kwasny, Jacek
AU - Sonebi, M.
AU - Basheer, P. A.M.
PY - 2009/12/1
Y1 - 2009/12/1
N2 - The performance of self-consolidating pastes was optimized by studying the effect of three mix composition parameters, limestone powder (LSP) content, dosage of superplasticizer (SP), and that of viscosity-modifying admixture (VMA), in a statistically designed experiment. Four properties of the pastes were measured: fluidity (mini-slump flow), Vicat setting times, volume change in the fresh state, and 28-day compressive strength. The optimization was preceded by the evaluation of the response surfaces of all chosen properties in the specified ranges of the three variables. The response surface results emphasized the primary and secondary effects on the properties of cement paste. The optimization indicated that pastes with properties acceptable for self-consolidating applications could be obtained with a moderate LSP content (for example, 19.5% by mass of total powder) and low dosage of the chemical admixtures (for example, 0.64% of SP and 0.01% of VMA by mass of total powder).
AB - The performance of self-consolidating pastes was optimized by studying the effect of three mix composition parameters, limestone powder (LSP) content, dosage of superplasticizer (SP), and that of viscosity-modifying admixture (VMA), in a statistically designed experiment. Four properties of the pastes were measured: fluidity (mini-slump flow), Vicat setting times, volume change in the fresh state, and 28-day compressive strength. The optimization was preceded by the evaluation of the response surfaces of all chosen properties in the specified ranges of the three variables. The response surface results emphasized the primary and secondary effects on the properties of cement paste. The optimization indicated that pastes with properties acceptable for self-consolidating applications could be obtained with a moderate LSP content (for example, 19.5% by mass of total powder) and low dosage of the chemical admixtures (for example, 0.64% of SP and 0.01% of VMA by mass of total powder).
KW - Compressive strength
KW - Limestone powder
KW - Mini-slump flow
KW - Setting time
KW - Superplasticizer
KW - Viscosity-modifying admixture
KW - Volume change
UR - http://www.scopus.com/inward/record.url?scp=72849146633&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:72849146633
SN - 9780870313349
T3 - American Concrete Institute, ACI Special Publication
SP - 115
EP - 132
BT - 10th ACI International Conference on Recent Advances in Concrete Technology and Sustainability Issues
T2 - 10th ACI International Conference on Recent Advances in Concrete Technology and Sustainability Issues
Y2 - 14 October 2009 through 16 October 2009
ER -