In: Civil Engineering
A concrete for a weave breaker is to be designed at a w/c ratio
of 0.45.
A maximum size of aggregate of 25 mm was used hence a water content
of 200 kg/m3 (with 2% air) was required to achieve satisfactory
workability.
Both the coarse and fine aggregate conform to the grading
requirements of ASTM C33.
The fine aggregate having a fineness modulus of 2.4, and an
absorption of 2%, a BSG (SSD) of 2.6, whereas the coarse aggregate
have a bulk density of 1500 kg/m3; an absorption of 3% and a BSG
(SSD) of 2.50.
The moisture content for both aggregate is 2%. Compute mixture
proportions (in kg/m^3) before and after moisture corrections
following ACI procedure.