问题
单项选择题
砌筑砂浆试配时用机械搅拌,搅拌时间应自开始加水时算起,预拌砌筑砂浆和掺有粉煤灰、外加剂、保水增稠材料等的砂浆搅拌时间不得少于()
A.100S
B.120S
C.150S
D.180S
答案
参考答案:D
砌筑砂浆试配时用机械搅拌,搅拌时间应自开始加水时算起,预拌砌筑砂浆和掺有粉煤灰、外加剂、保水增稠材料等的砂浆搅拌时间不得少于()
A.100S
B.120S
C.150S
D.180S
参考答案:D