将混凝土制品在温度为(20±2)°C,相对湿度大于95%的标准条件下进行的养护,是( )...
Wednesday, September 21, 2022
大体积基础宜采用自然养护,但应根据气候条件采取温度控制措施。并按需要测定浇筑后的混凝土表面和内部温度,使温度控制在设计要...
Thursday, September 22, 2022
集料试验所需要的试样最小质量通常根据集料公称()粒径确定。...
Friday, September 16, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
在《JGJ18-2012》中,应根据钢筋()和焊接位置,选择焊接材料,确定焊接工艺和焊接参数。...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
现场抽样测定标准立方体抗压强度的试件尺寸是()立方体。...
Tuesday, September 20, 2022
Tuesday, September 20, 2022
判断题钢筋主要机械性能的各项指标是通过静力拉伸试验和硬度试验来获得的。A 对B 错...
Thursday, November 10, 2022
Thursday, September 22, 2022
Sunday, September 18, 2022
Thursday, September 22, 2022
混凝土强度主要取决于水泥石强度及其与骨料表面的粘结强度。...
Thursday, September 22, 2022
根据DL/T5215-2005,水工建筑物用PVC止水带的扯断伸长率指标为()。...
Thursday, September 15, 2022
下列砖和砌块中只可以采用坐浆法制作抗压强度试件的是()。...
Wednesday, September 21, 2022
水泥胶砂()试验室的温度应保持在(),相对湿度应()。试体带模养护的()或雾室温度保持在(),相对湿度()。试体养护池(...
Thursday, September 15, 2022