首页
登录
职称英语
Concrete Another thing to remember in connecti
Concrete Another thing to remember in connecti
游客
2023-11-20
29
管理
问题
Concrete
Another thing to remember in connection with concrete is that you are not allowed very much leeway for errors in either measurements or location. Once you have a solid mass of concrete set in place, it is going to stay there. You have a difficult job ahead of you if you try to remedy a mistake. Make very sure, before you fill the form, that everything is where and how you want it.
There are numerous rules regarding the proper mixing handing, and finishing of concrete, but the essential one concerns the amount of water to use. The less water in the mix, the less the finished job will shrink. The less water used, the harder and more enduring the job after it has set.
The amateur concrete worker is plagued with two desires. One is to use enough water to have the concrete nice and soft and easy to push around. You have been warned against that. The second is to take off the wooden forms too early, to see what the job looks like. That is really fatal. If the forms are stripped off too soon, while the concrete is still green, two things are likely to happen--you are almost sure to break off corners or edges, and you are likely to cause a major crack or defect in the body of the work. An excellent rule is to wait until you are sure the concrete is properly hardened, and then wait another day before removing the forms. [br] In mixing concrete, one of the desires the amateur must resist is to ______.
选项
A、break off a corner to see if the "green" has gone
B、leave the form on too long
C、strip off the forms a day after the concrete has properly hardened
D、use too much water
答案
D
解析
参见第二、三段。
转载请注明原文地址:https://tihaiku.com/zcyy/3205028.html
相关试题推荐
Inatimenotsolongagoorfaraway,eatingfamilydinner,connectingwit
Inatimenotsolongagoorfaraway,eatingfamilydinner,connectingwit
Inatimenotsolongagoorfaraway,eatingfamilydinner,connectingwit
Inatimenotsolongagoorfaraway,eatingfamilydinner,connectingwit
Inatimenotsolongagoorfaraway,eatingfamilydinner,connectingwit
Inatimenotsolongagoorfaraway,eatingfamilydinner,connectingwit
Weallhaveoffensivebreathatonetimeoranother.Inmostcasesoffensive
Weallhaveoffensivebreathatonetimeoranother.Inmostcasesoffensive
Weallhaveoffensivebreathatonetimeoranother.Inmostcasesoffensive
ConcreteAnotherthingtorememberinco
随机试题
UnderscoringtheimportanceofAsiatotheUnitedStatesinthenewcentury
YanClubGroupExh
推土机的一个作循环由( )工序组成。A.铲土 B.运土 C.卸土 D.铺土
世界卫生组织(WHO)肥胖程度分类标准,体质指数在BMI35~39.9kg/m2
乳岩肝郁痰凝证的首选方剂是A.逍遥散 B.逍遥蒌贝散 C.柴胡疏肝散
培养细菌L型常采用A.血琼脂培养基B.高渗低琼脂培养基C.克氏双糖铁琼脂培养基D
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
财产保险包括( )。A.财产损失保险 B.意外伤害保险 C.信用保险 D
根尖片长焦距平行投照技术的优点是A.不需附加其他特殊设备,操作简便 B.X线
关于安全专项施工方案实施的说法,正确的是()。A.由项目经理兼任专项方案实施情
最新回复
(
0
)