From: Lightweight Self-consolidating Concrete with Expanded Shale Aggregates: Modelling and Optimization
Test method | Mean (n = 6) | SD | COV (%) | Estimated error (95 % CI) | Relative error (%) |
---|---|---|---|---|---|
Slump flow (mm) | 692.50 | 12.55 | 1.8 | 12.26 | 1.8 |
V-funnel (s) | 3.77 | 0.23 | 6.2 | 0.23 | 6.1 |
J-ring flow (mm) | 691.67 | 13.29 | 1.9 | 12.99 | 1.9 |
J-ring height (mm) | 1.50 | 0.55 | 36.5 | 0.54 | 35.7 |
L-box (ratio) | 0.99 | 0.01 | 1.3 | 0.01 | 1.2 |
Filling capacity (%) | 98.33 | 1.21 | 1.2 | 1.18 | 1.2 |
Sieve segregation resistance (%) | 11.83 | 1.17 | 9.9 | 1.14 | 9.7 |
7-Day comp strength (MPa) | 32.00 | 1.26 | 4.0 | 1.24 | 3.9 |
28-Day comp strength (MPa) | 45.00 | 1.79 | 4.0 | 1.75 | 3.9 |
Fresh unit weight (kg/m3) | 1790.67 | 10.78 | 0.6 | 10.54 | 0.6 |
28-Day air dry unit (kg/m3) | 1674.17 | 11.44 | 0.7 | 11.18 | 0.7 |
28-Day oven dry unit (kg/m3) | 1614.33 | 13.85 | 0.9 | 13.53 | 0.8 |