The 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 FalseBleeding is the development of a layer of water at the top or surface of freshly placed concrete. What causes bleeding? O Settlement of cement and aggregate O Excessive water used to produce high slump O High viscosity of the concrete O Accumulate water under and alongside coarse aggregate particlesHow does bleeding affect the finishing of concrete? (Choose the best answer) O It does not affect concrete finishing as long as you wait for the water to evaporate It will affect the finishing of concrete. You should let the bleed water evaporate or finish prior to bleeding. It will not affect the finishing, but you need to push-in the aggregate while troweling. O It will affect it since water can make the surface of the concrete mixture flaky.When does the hydration and strength gain of concrete virtually stop? When the relative humidity within the concrete drops to about 80% O When the temperature of the concrete drops below 34 "F O After 30 days O All of the aboveAssume that you are pouring conventional concrete for a 20' x 10' x 6" deck. How much the concrete deck will weigh? O Around 10,000 lbs O Around 12,500 lbs O Around 15,000 lbs O Around 20,000 lbsTo control random cracks on a 6" slab on grade, what is an appropriate construction joint spacing? O 6 ft O 12 ft O 24 ft O 30 ft