综合利用工业生产过程中排出的废渣弃料做主要原料生产砌体材料,下列()不是以此原料生产的。A、煤矸石内燃砖B、水泥花格砖C、粉煤灰砖D、炉渣砖...
Wednesday, November 16, 2022
钢筋是指钢筋混凝土用和预应力钢筋混凝土用钢材,其横截面为圆形,有...
Sunday, September 11, 2022
以各种高效减水剂为主要组分,再复合各种适量的缓凝组分或其他功能性...
Wednesday, September 14, 2022
用雷氏法测定并判定水泥安全性时,当2个试件煮后增加距离(C-A)...
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Sunday, September 11, 2022
配筋混凝土的坍落度一般()无筋混凝土的坍落度。A、大于B、小于C、等于D、无关...
Sunday, July 2, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
进行混凝土外加剂收缩率比试验,恒温恒湿室的温度为()。A、(20±2)℃B、(20±3)℃C、(20±5)℃D、没规定...
Sunday, March 24, 2024
Sunday, March 24, 2024
采用烘干法测定土的含水量,烘箱的标准温度为()。A、100~105℃B、105~110℃C、95~100℃D、110-115℃...
Saturday, February 17, 2024
某混凝土工程,所用配合比为水泥:砂:碎石=1:1.98:3.90...
Wednesday, September 14, 2022
Tuesday, October 17, 2023
Wednesday, September 14, 2022
依据GB8076标准,外加剂匀质性指标要求在生产厂家控制值相对量...
Wednesday, September 14, 2022
Wednesday, September 14, 2022