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Q. For well-cured concrete of a particular age, what is the most important single factor affecting compressive strength? A. The quantity of mixing water per unit of cementitious material, that is, the w/cm. A fairly definite relationship exists between the w/cm and strength for a given set of materials, as first shown by Duff Abrams in 1918. The lower the w/cm, the greater the strength. References: ACI 301-20; ACI 311.6-18; ACI 318-19; ACI 214R-11; ASTM C31; ASTM C39 Topics in Concrete: Concrete Fundamentals; Quality Assurance; Testing of Concrete
Q. For well-cured concrete of a particular age, what is the most important single factor affecting compressive strength?
A. The quantity of mixing water per unit of cementitious material, that is, the w/cm. A fairly definite relationship exists between the w/cm and strength for a given set of materials, as first shown by Duff Abrams in 1918. The lower the w/cm, the greater the strength.
References: ACI 301-20; ACI 311.6-18; ACI 318-19; ACI 214R-11; ASTM C31; ASTM C39
Topics in Concrete: Concrete Fundamentals; Quality Assurance; Testing of Concrete