Table 4. Mean wet densities of hollow blocks at 48 hours (kg m^–3) with varying mix ratios and percentage replacement

Mix ratio	Percentage replacement (%)
Mix ratio	0	5	10	15
1:2:0.3	2,582.00 ± 261.00^a	2,374.00 ± 240.01^ab	2,337.00 ± 224.52^ab	1,934.00 ± 189.50^b
1:1.5:0.4	2,571.67 ± 245.64^a	2,474.33 ± 249.00^a	2,271.00 ± 229.00^ab	1,991.33 ± 195.04^b
1:1:0.5	2,598.33 ± 127.88^a	2,534.00 ± 44.40^a	2,270.33 ± 229.50^a	2,269.67 ± 425.11^a
1:0.5:0.7	2,373.33 ± 238.50^a	2,223.67 ± 221.02^a	2,308.33 ± 119.07^a	2,247.00 ± 224.18^a

Values are presented as mean ± SD.
Superscripts indicate significant differences (p < 0.05) across each row using Duncan’s Multiple Range Test (DMRT).