英语翻译Concrete is a mixture that contains cement,sand,gravel,water,and usu-ally additives.The cement is the material that causes the other ingredients to ad-here to one another.The water is needed to cause the cement to hydrate.Con-crete does n

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英语翻译Concreteisamixturethatcontainscement,sand,gravel,water,andusu-allyadditives.Thecementisthemateri

英语翻译Concrete is a mixture that contains cement,sand,gravel,water,and usu-ally additives.The cement is the material that causes the other ingredients to ad-here to one another.The water is needed to cause the cement to hydrate.Con-crete does n
英语翻译
Concrete is a mixture that contains cement,sand,gravel,water,and usu-
ally additives.The cement is the material that causes the other ingredients to ad-
here to one another.The water is needed to cause the cement to hydrate.Con-
crete does not harden by drying,but by hydration.The aggregate used to make
concrete should be uniformly graded to provide a good t"111 of all the spaces be-
tween the individual pieces of aggregate.The sand will fill the small spaces in
the mix.Gap-graded aggregates have certain particle sizes entirely or mostly
absent.The lack of two or more successive sizes can create segregation prob-
lems with the concrete mix.The amount of water used in the mix should not be
excessive,because excess water eventually evaporates,leaving small voids in
the spaces it once occupied.The amount of water is controlled by specifying the
water/cement ratio,the amount of water in relation to the amount of cement.
The water/cement ratio is defined as the ratio by weight of the free water content to the cement content.It has been long accepted that a low free water/ce-
ment ratio in a concrete mix is essential for the concrete's subsequent strength
and durability.There are many different additives and they are used for a varie-
ty of purposes from changing the color of the concrete to shortening or lengthe-
ning the time for the concrete to harden.
Concrete is characterized by strong compressive strength,but is relatively
weak in tension and shear.It can support large axial loads,and is used exten-
sively in the foundations of large structures such as bridges and tall buildings.
but it breaks easily under bending without reinforcing steel.Concrete with com-
pressive strength of 3,000 6,000 pounds per square inch (psi) is common.
The American Concrete Institute defines any concrete over 6,000 psi as high-
strength concrete.

英语翻译Concrete is a mixture that contains cement,sand,gravel,water,and usu-ally additives.The cement is the material that causes the other ingredients to ad-here to one another.The water is needed to cause the cement to hydrate.Con-crete does n
混凝土是一种混合物,包含水泥,砂,砾石,水和usu -
盟友添加剂.水泥是材料的原因,其他成分的广告-
这里到另一个.水是需要事业的水泥,以水合物.结论
克里特岛不硬化干燥,但水化.总结用来制造
具体应统一分级,以提供一个良好的T “型111的所有位被-
吐温个别件总结.沙将填补小位在
组合.差距分级总量是有一定的颗粒大小,完全或大部分
缺席.缺乏两个或两个以上的连续大小可以建立隔离概率-
lems与混凝土配合比.耗水量所用的结构不应该
过量,因为过量饮水,最终蒸发,留下小空隙,在
该位,它一旦被占领.耗水量控制是通过指定
水/水泥的比例,耗水量在有关金额水泥.
水/水泥的比例,是指比例按重量计算的自由水含量,以水泥的内容.它已久的接受一个低游离water/ce-
ment的比例在一个混凝土配合比是必不可少的具体的后续力量
和耐久性.有很多不同的添加剂和它们被用来为varie -
性的目的,从改变颜色的混凝土,以缩短或lengthe -
宁的时间为混凝土硬化.
混凝土的特点是强大的压缩强度,但相对
薄弱,在紧张和剪切.它可以支持大型的轴向负荷,并用于exten -
sively在基础大型结构,如桥梁及高层建筑.
但休息,很容易下弯曲而不钢筋.具体到COM -
pressive强度3000 〜六零零零磅每平方英寸（ PSI ）的是常见的.
美国混凝土学会界定任何具体的超过6000防扩散安全倡议作为高
高强混凝土.

google翻译
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混凝土是一种混合物，包含水泥，砂，砾石，水和
盟友添加剂。水泥是材料的原因，其他成分的广告-
这里到另一个。水是需要事业的水泥，以水合物。结论
克里特岛不硬化干燥，但水化。总结用来制造
具体应统一分级，以提供一个良好的T “型111的所有位被-
吐温个别件总结。沙将填补小位在
组合。差距分级总量是有一定的颗粒大小，完全或大部分
缺席。缺乏两个或两个以上的连续大小可以建立隔离概率-
与混凝土配合比。耗水量所用的结构不应该
过量，因为过量饮水，最终蒸发，留下小空隙，在
该位，它一旦被占领。耗水量控制是通过指定
水/水泥的比例，耗水量在有关金额水泥。
水/水泥的比例，是指比例按重量计算的自由水含量，以水泥的内容。它已久的接受一个低游离
比例在一个混凝土配合比是必不可少的具体的后续力量
和耐久性。有很多不同的添加剂和它们被用来为
性的目的，从改变颜色的混凝土，以缩短或
宁的时间为混凝土硬化。
混凝土的特点是强大的压缩强度，但相对
薄弱，在紧张和剪切。它可以支持大型的轴向负荷，并用于
在基础大型结构，如桥梁及高层建筑。
但休息，很容易下弯曲而不钢筋。具体到COM -
强度3000 〜六零零零磅每平方英寸（ PSI ）的是常见的。
美国混凝土学会界定任何具体的超过6000防扩散安全倡议作为高
高强混凝土。
请参考。。。。。。

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