2022 Second construction municipal: a daily practice 110 before the exam

2022-05-21 0 By

1, arch culvert, cover culvert on both sides of the main structure waterproof layer of the protective layer masonry mortar strength to reach () to backfill soil.A. 1.5 MPaB. 2 mpac. 2.5 MPaD. 3 mpa2, should do by test pile or pile driving test in conjunction with the supervision and design units after study to determine the index of sinking pile is ().A. Penetration b. elevation of pile tip C. strength of pile body D. bearing capacity 3. The steps of concrete mix design are ().A. Preliminary mix ratio design → benchmark mix ratio design → laboratory mix ratio design → construction mix ratio design B.Preliminary mix ratio design → laboratory mix ratio design → benchmark mix ratio design → construction mix ratio design C.Laboratory mix ratio design → benchmark mix ratio design → preliminary mix ratio design → construction mix ratio design D.Laboratory mix ratio design → preliminary mix ratio design → benchmark mix ratio design → construction mix ratio design 4, the following statement about concrete sprinkling maintenance is correct ().A. The concrete shall be covered and watered as soon as possible after receiving the slurry B. When the temperature is below 5℃, the concrete shall not be watered for curing C.The sprinkler curing time of impermeable or high strength concrete is not less than 14dD. The sprinkler curing time of slag Portland cement concrete is not less than 14dE.5. Pile test should be carried out before sinking pile construction for geologically complex Bridges and large Bridges. The purpose is ().A. Test the bearing capacity of the pile B. determine the penetration degree C. determine the pile sinking process D. Determine the elevation of the pile end E.D,A,B,ABCE,AC