Design of Normal Concrete Mixtures Using Workability-Dispersion-Cohesion Method

Table 1

Properties of coarse aggregate used in the mix.

Classification	CA1	CA2	CA3	CA4
Local name	Kuwaiti Gravel	Wadi Gravel	Sukhna Coarse Agg.	Yajooz Coarse Agg.
Crushed or natural	Natural	Natural	Crushed	Crushed
Absorption (%)	0.91–1.39	1.03–1.41	1.91–2.23	2.97–4.42
Specific gravity	2.57–2.66	2.63–2.79	2.53–2.76	2.49–2.58
% age of samples lying outside ASTM standards (%)	12	23	31	37
LA abrasion (%)	21–27	20–28	22–32	29–39
% age of samples lying outside BS standards (%)	5	12	22	25

Percentage of samples falling outside the standard limits when tested for grading requirements.