Evaluation of the Flexural Performance and CO₂ Emissions of the Voided Slab

Table 2

Design of concrete mixture.

Designed compressive strength (MPa)	w/c (%)	s/a (%)	Unite content (kg/m^3)					Air content (%)
			Water	Cement	Fine aggregate	Coarse aggregate	Admixture
27	45.7	44.3	108	333	821	1086	3.33	2.0

Note: w/c is the water/cement ratio, and s/a is the sand/aggregate ratio.