If we assume that 73 degree F is favorable for the development of early strength in concrete, what condition will increase the compressive strength at least for the first month? O Casting at 40 deg F and curing at 40 deg F O Casting at 50 deg F and curing at 73 deg F O Casting at 73 deg F and curing at 50 deg F O Casting at 90 deg F and curing at 90 deg FWhat is considered as high-early compressive strength? O 300 to 600 psi at 3 to 12 hours O 8000 to 20000 psi at 1 to 3 days O 3000 to 6000 psi at 1 to 3 days O 8000 to 20000 psi at 28 to 91 daysWhat is the most commonly used supplementary cementitious material:? O fly ash O slag cement O silica fume O natural pozzolansWell graded aggregates have typically: O The lowest volume of voids O The highest volume of voids O Has no effect on void space O Uniform particlesWhen do we use Air-Entraining Admixtures? O to decrease in water content without decreasing the slump O to delay the rate of setting of concrete O for concrete exposed to cycles of freezing and deicer chemicals O to increase viscosity in concrete to reduce dewatering of the pasteWhat property of concrete can be measured by the slump test? O Workability O Consistency O Stability O UniformityThe grading, shape, and surface texture of aggregates influence the workability of concrete. The use of midsized aggregate can result in concrete with poor workability. O True O False