All will increase shrinkage except O excessively high freshly mixed concrete temperatures O high fine-aggregate contents O use of small-size coarse aggregate use of low slumpsIf the thermal expansion of a 2.5-mile roadway along the Montana/Canadian border is 6 millionths per OF. What is the theoretical greatest expansion for a temperature change of 85 F in one day? O Cannot be determined O 19 inches O 59 inches 81 inchesIf the water saturation for a 30x50x6" slab is 3.6%. What would be the volume of water in gallons that occupies only 1% of the voids? O about 25 gals O about 55 gals O about 75 gals O about 100 galsTrue or False: An increase in aggregate size generally results in a reduction in watercementing materials ratio. {3. True False Assume that the gross volume of a revolving drum truck mixer is of 11] cubic yards. How much is the rated mixing capacity? {3- 5 CY .:;';. 5.3 m\" .;;';-. 15 (3v .3. 1e CY If we use truck mixers: what is the maximum time allowed between batching and complete discharge of the concrete at the job site? 30 minutes 50 minutes 9D minutes 120 minutes Remixing the concrete is common when early setting becomes a problem. Under what conditions should you allow the addition of more water to the concrete when the truck arrives on the jobsite? If the ratio of the total water added to cement does not exceed the maximum allowable water-cement ratio If we did not use a retarder If mixture adjustments are permitted at the jobsite If the time between batching and complete discharge of the concrete at the job site is less than 1%2 hours