土木工程专业英语论文.doc

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Building constructiostigation, design and construction, maintenance, repair and other professional technology.
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Concrete's ising 1 kind is anticipate by the freestone bone, cement, water and other mi*ture but formation of the in addition material of quality brittleness not and all the concrete construction transform with oneself, control etc. a series problem, harden model of in the concrete e*istence numerous tiny hole, spirit cave and tiny crack, is e*actly because these beginning start blemish of e*istence just make the concrete present one some not and all the characteristic of tiny crack is a kind of harmless crack and accept concrete heavy, defend Shen and a little bit other use function not a creation to after the concrete be subjected to lotus carry, difference in temperature etc. function, tiny crack would continuously of e*pand with connect, end formation we can see without the aid of instruments of macro view the crack be also the crack that the concrete often say in the engineering.
Concrete crack creation of the reason be a lot of and have already transformed to cause of crack:Such as temperature variety, constringency, inflation, the asymmetry sink to sink etc. reason cause of crack;Have outside carry the crack that the function cause;Protected environment not appropriate the crack etc. caused with chemical differentiation to treat in the actual engineering, work°out a problem according to the actual circumstance.
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In the concrete engineering the familiar crack and the prevention
Suo crack and prevention
Stem the Suo crack much appear after the concrete protect be over of a period of t