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actually, there are many things should be taken into account to ensure a good quality concrete;
1. handling
bad handling techniqe which promote segregation must be avoided. it means concrete should remain cohesive.
2. placing of concrete is very imporatnt to avoid segregation.
3. vibration is also very important for concrete to eliminate the entrapped air, reduce voids and enforce the particles into a closer shape.
4. curing is the last imporatant factor to provide a good condition (moisture) in order to continue hydration operation.
1- SITE TEMPRETURE
2-DENSITY OF REINFORCEMENT
3-TYPE OF FORMWORK
4-CASTING METHOD
5-TIME OF CASTING
