建筑材料模拟题1Buildingmaterialssimulationquestions1.doc

《建筑材料》模拟题1（Building materials simulation questions 1） Building materials simulation questions 1 First, the individual choice (the following options are only one answer is correct, the election of the right, wrong, no election, no scoring) 16 points 1. of the following materials do not belong to the structural material is (C) A. cement, concrete, asphalt, B. stone, waterproof materials, decorative materials C. products, glass, mineral wool rock wool D. waterproof mortar, masonry mortar, plaster mortar 2. calculate the volume quality index of loose material in the state of natural accumulation (C) A. density, B. surface density, C. bulk density, D. porosity 3. for important projects and long-term immersion or humid environment, the softening coefficient is not less than (D). A.0.5~0.6 B.0.6~0.75 C.0.85~0.9 D.0.75~0.85 4. limestone belongs to natural stone (C) A. magmatic rock, B. sedimentary rock, C. metamorphic rock, D. artificial stone The use of 5. properties of building gypsum, is not true? (B) Which of the following factors does not affect the setting and hardening of 5: cement? (A) The volume and weight of A. cement, the fineness of B. cement, C., mixing water, D., hardening time 7. cement stability is bad, can cause component (C), cause quality accident. A. shrinkage deformation, B. surface cracking, C. expansion crack or warpage deformation, D. distortion 8. the strength of concrete is determined according to the compressive strength of cubic specimens at the age of (A) A.28 days, B.3 days, C. initial coagulation, D. final coagulation 9. when calculating the proportioning ratio of masonry mortar or plastering mortar, the sand under (A) shall be used as the basis of calculation. A. B. dry state natural state water content of C. 30% D. dense state The 10. sand rate is defined as the percentage of (D) A. sand weight accounts for B. of total weight of concrete, sand weight accounts for cement weight C. sand weighs more than stones, weighs D., and sand weighs more