Compressive strength 4 Strength development Cements 2 Curing 2 Curing condition 2 Hydrated lime 2 Hydration 2 Silicates 2 compressive strength 2 Aggregates 1 Alkaline solutions 1 Bacilli 1 Bacillus Subtilis 1 Bacillus subtilis 1 Bacteriology 1 Bio concrete 1 Bonded silica 1 C-S-H gel 1 Calcium 1 Calcium hydroxide solution 1 Calcium silicate 1 Cell walls 1 Cells 1 Cement hydration 1 Cement matrix 1 Cementitious materials 1 Chemically modified 1 Coarse aggregates 1 Compressive strength of concrete 1 Concrete aggregates 1