Evaluation of using local coarse aggregate of Kerbala Quarries in production of high strength concrete

الملخص EN

The use of White Crushed Gravel from Kerbela Quarries in the design of high strength concrete mixes is evaluated through this research.

Two grades of mixes are undertaken ; they are A (40 Mpa) and B (60 Mpa) of compressive strength.

The mixes proportion is used for the design in these mixes are (0.35 and 0.3 water / cement ratio), (446kg / m3 and 550kg / m3 cement), (0.8 liter / kg super plasticizer) for each A and B mixes respectively.

The fresh concrete tests results indicate that mixes made of the Crushed White Gravel characterized with slump value of 57 and 52 mm and compaction factor of (0.95, 0.92) for the mixes type A and B respectively.

The maximum compressive strength of (43.6and 62.2) Mpa, the modulus of elasticity of (40.5 and 43.4) Gpa, the modulus of rupture of (6.3 and 6.7 ) Mpa, the splitting tensile strength of (4.5 and 4.9 Mpa, the Ultra Sonic Pulse velocity of (4.25 and 4.58) Km / s for both A and B mixes respectively at 28 days.