砂浆分层度值是用来衡量砂浆运输和使用时的保水性能的好坏,分层度值愈大,砂浆保水性愈好,反之亦然。()...
Thursday, September 22, 2022
Wednesday, November 15, 2023
判断题钢筋的重量偏差的测量中,测量试样总重量时,应精确至1%。A 对B 错...
Wednesday, October 4, 2023
钢材的伸长率公式?=(L1-L0)/L1,式中L1为试件拉断后的标距长度,L0为试件拉断原标距长度。()...
Monday, September 19, 2022
Saturday, February 24, 2024
简述土工合成材料孔径测定(干筛法)试验的试验目的及适用范围、仪器及仪具。...
Saturday, September 17, 2022
Tuesday, March 26, 2024
当混凝土强度等级<60时,用非标试件200mm×200mm×200mm的试件测得的强度值均应乘以尺寸换算系数,换算系数为...
Thursday, September 22, 2022
Monday, July 24, 2023
单选题在我国应淘汰的计量单位()。A 吨B 升C 千克力D 千克...
Sunday, March 19, 2023
多选题外加剂的作用有()。A可显著提高混凝土的和易性或强度B可提高混凝土的耐久性C可提高混凝土的早期强度D可改变混凝土拌合物的凝结时间...
Sunday, March 19, 2023
Monday, November 27, 2023
横截面积为314.2mm2的光圆钢筋,当屈服力为80.5kN时,屈服强度为()...
Thursday, September 22, 2022
判断题钢筋在做冷加工时,在一定范围内,冷加工变形越大,屈服强度提高越多,塑性和韧性降低也越多。()A 对B 错...
Monday, October 3, 2022
Thursday, September 22, 2022
单选题沥青针入度试验时不会用到的仪器是()。A 干燥箱B 试验筛C 台秤D 针入度仪...
Sunday, June 4, 2023
填空题水泥抗折强度加荷速率为()N/s,抗压强度试验时加荷速率是()N/s...
Saturday, October 8, 2022
判断题生石灰的主要化学是成份是Ca(0H)2,熟石灰的主要化学成份是CaO。A 对B 错...
Tuesday, August 15, 2023
坍落度适用范围,坍落度在()之间,粗骨料最大粒径≤40mm。...
Wednesday, September 21, 2022
Thursday, September 15, 2022