Table 13 Theoretically optimum mix proportions and experimental results.
From: Lightweight Self-consolidating Concrete with Expanded Shale Aggregates: Modelling and Optimization
Mix no. | ESH–LWSCC-1 | ESH–LWSCC-2 | ESH–LWSCC-3 | |||
|---|---|---|---|---|---|---|
Mix parameters and responses | Opt values and expected response | Experimental results for opt mix proportions | Opt values and expected response | Experimental results for opt mix proportions | Opt values and expected response | Experimental results for opt mix proportions |
w/b | 0.35 | 0.35 | 0.35 | 0.35 | 0.40 | 0.40 |
HRWRA | 0.61 | 0.61 | 0.83 | 0.83 | 0.78 | 0.78 |
B | 476 | 476 | 486 | 486 | 504 | 504 |
Slump flow (mm) | 650 | 645 | 708 | 725 | 760 | 770 |
V-funnel (s) | 4 | 4.9 | 4 | 3.8 | 1.32 | 2.1 |
J-ring flow (mm) | 650 | 635 | 709 | 715 | 765 | 760 |
J-ring height (mm) | 2.2 | 2 | 0.83 | 0 | 0 | 0 |
L-box (%) | 0.91 | 0.87 | 1 | 0.98 | 0.99 | 0.99 |
Filling capacity (%) | 90 | 88 | 99.4 | 98 | 99.99 | 98 |
Sieve segregation (%) | 13.1 | 12.1 | 14 | 13 | 17.75 | 18.5 |
7-Day comp strength (MPa) | 30.2 | 32.2 | 30.6 | 33 | 25.8 | 24.5 |
28-Day comp strength (MPa) | 44.6 | 45.75 | 45.4 | 47.75 | 36.95 | 35.1 |
Fresh unit weight (kg/m3) | 1,784 | 1,810 | 1,791 | 1,763 | 1,790 | 1,780 |
28-Day air dry unit (kg/m3) | 1,688 | 1,653 | 1,695 | 1,708 | 1,689 | 1,650 |
28-Day oven dry unit (kg/m3) | 1,606 | 1,585 | 1,614 | 1,602 | 1,610 | 1,590 |
Desirability | 0.81 | – | 0.86 | – | 0.91 | – |