FACTORIAL DESIGN OF CEMENT SLURRIES CONTAINING LIMESTONE POWDER FOR SELF-CONSOLIDATING SLURRY-INFILTRATED FIBER CONCRETE

摘要: This study investigated slurries with high penetrability for production of self-consolidating slurry-infiltrated fiber concrete (SIFCON). Factorial experimental design was adopted to assess the combined effects 5 independent variables on mini-slump test, plate cohesion meter, induced bleeding J-fiber penetration and compressive strength at 7 28 days. The were proportions limestone powder (LSP) sand, dosages high-range water-reducing admixture [superplasticizer (SP)] viscosity agent (VA), water-binder ratio (w/b). A 2-level fractional factorial statistical method used model influence key parameters properties affecting behavior fresh cement slurry strength. models are valid mixtures 10-50% LSP as replacement cement, 0.02-0.06% VA by mass 0.6-1.2% SP, 50 150% sand (percent binder) 0.42-0.48 w/b. influences LSP, VA, w/b characterized analyzed using polynomial regression, which identifies primary factors their interactions measured properties. Mathematical polynomials developed mini-slump, bleeding, functions estimated results from derived compared obtained earlier proposed that paste. response SIFCON offer useful information regarding mixture optimization secure a low