Comparative Analysis of Selected Concrete Mix Design Methods Based on Cost-Effectiveness

Table 4

Summary of aggregate physical proprieties.

No.	Parameters		Results
1	Characteristic compressive strength		C-25
2	Nominal maximum size of coarse aggregate		20 mm
3	Coarse aggregate		Natural crushed stone aggregate
4	Fine aggregate		Natural deposited sand from Abay River
5	Silt content of sand		4.5%
6	Water absorption	Coarse aggregates	0.2%
		Fine aggregates	0.98%
7	Unit weight of	Coarse aggregates	1650 kg/m^3
		Fine aggregates	1750 kg/m^3
8	Specific gravity of	Fine aggregate/sand	2.64
		Coarse aggregates	2.89
9	Fineness modulus (FM) of sand		2.45 for ACI, DOE, EBCS, and grading zone II for IS
10	Desired workability		25 mm to 50 mm slump
11	Chemical/mineral admixtures		Not used at all mix