A.0.60mm,1.18mmB.0.075mm,1.18mmC.0.60mm,2.36mmD.0.075mm,2.36mm
单项选择题依据GB T14684-2011标准要求,颗粒级配分计筛余精确至()%,单次累计筛余精确至()%,单次砂细度模数精确至(),两次累计筛余精确至()%,两次结果算术平均值精确至()。
A.0.01,0.1,0.1,0.1,0.1B.0.1,0.01,0.1,0.1,0.1C.0.1,0.1,0.01,1,0.1D.0.1,0.1,0.01,0.1,0.1
单项选择题依据GB T14684-2011标准要求,2区砂0.6mm累计筛余在()
A.16%-39%B.16%-40%C.41%-70%D.71%-85%
单项选择题依据GB T14684-2011标准要求,砂浆用砂()筛的累计筛余应为0。
A.9.50mmB.4.75mmC.2.36mmD.1.18mm
单项选择题依据GB T14684-2011标准要求,做砂含泥量试验时鼓风干燥箱的温度应控制在()
A.105±5℃B.110±5℃C.110±10℃D.105±10℃
单项选择题依据GB T14684-2011标准要求,按细度模数分下列哪个属于中砂()
A.3.0-2.3B.2.5-3.1C.3.1-3.7D.2.6-3.2