Please answer a and b

(22 pts) A concrete batch plant stockpiles two aggregates. Periodically, the field moisture content must be determined for each aggregate sample. In these tests, 1000g of each aggregate type brought to the oven dry condition (OD) and weighed. Data for each test is given in the table below. Fine aggregate Coarse aggregate Stock pile weight (W stock) 1000g 1000g Oven dry weight (WoD) 980g 950g Absorption Capacity (%) AC=2.5% AC=3.0% Density (SSD) 163 lbs/ft 162 lbs/ft 2) The batch plant's typical mixture design for 4000 psi concrete are listed in the following table (a) (5 pts) What is the water-to-cement ratio of this mixture? (b) (8 pts) Adjust the cement, water, coarse aggregate, and fine aggregate contents, as necessary, to account for the field moisture conditions described in the table above. Material SSD Moisture Mix Proportion (lbs.) Correction (lbs.) For First Batch (lbs.) Cement 500 Sand 1400 Gravel 1700 Water Total 300 3900 Must Equal (22 pts) A concrete batch plant stockpiles two aggregates. Periodically, the field moisture content must be determined for each aggregate sample. In these tests, 1000g of each aggregate type brought to the oven dry condition (OD) and weighed. Data for each test is given in the table below. Fine aggregate Coarse aggregate Stock pile weight (W stock) 1000g 1000g Oven dry weight (WoD) 980g 950g Absorption Capacity (%) AC=2.5% AC=3.0% Density (SSD) 163 lbs/ft 162 lbs/ft 2) The batch plant's typical mixture design for 4000 psi concrete are listed in the following table (a) (5 pts) What is the water-to-cement ratio of this mixture? (b) (8 pts) Adjust the cement, water, coarse aggregate, and fine aggregate contents, as necessary, to account for the field moisture conditions described in the table above. Material SSD Moisture Mix Proportion (lbs.) Correction (lbs.) For First Batch (lbs.) Cement 500 Sand 1400 Gravel 1700 Water Total 300 3900 Must Equal