道桥专业毕业设计外文翻译----沥青路面
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1、专业 外文翻译 原文 road surface of pitch 1 Debulk 1.1 Summary Good pitch road surface quality is it reflect , appear any quality defect will all that has been achieved has come to nothing in rolling through rolling to want. The durable performance of meeting pitch road surface of the structure demand is aff
2、ected by two indexes mainly, namely the mixture and debulk designed. In these two indexes , lack any durable performance that cant ensure the pitch road surface , if insufficient debulk, optimum mixture that design will reduce serviceability , pitch of road surface, and good debulk can improve the r
3、esult of a kind of nonstandard mixture effectively . So, debulk is considered to influence one of the most important factors of durable performance of road surface of pitch . Debulk course to reduce pitch course , air vent of content in the mixture, for solid particle stemming and orientating among
4、one viscoplasticity medium course this, in the form of forming a kind of closely more knit and more effective particle to arrange. This course only takes place under the construction state in theory, but not under the traffic condition. 1.2 Impact on debulk of composition material on the pitch road
5、surface 1.2.1collects material performance in order to reach the ideal solidity of pressing, it is very important to collect material and detailed some nature of collecting material thickly: Such as the particle form, raised angle , the absorbing water rate and surface are constructed, grade mix mix
6、ture most heavy to collect material size , thick to collect material proportion , consumption and type ,etc. , consumption of sand and powder of ore pigeonhole to pitch mixture solidity have direct influence. Under the same situation as other indexes , collect material one grade of mixture or discon
7、nected grade mixed and mix mixture than exchanging debulk more than the single size from thick to the detailed even grade of mixture mixed , thick to collect material proportion heavy pitch mixture, must increase the strength of keeping notably , could obtain the necessary space rate . On the other
8、hand, many sand, or detailed grade buy bituminous concrete to be very much easy to be plastic, this kind of mixture is still difficult to reach proper closely knit degree. The pitch mixture of much sand tends towards pushes and shoves and difficult with debulking under debulk function . The differen
9、t kinds of packing has remarkable influence on debulk of the pitch mixture, according to survey, in a situation that other conditions are the same, ordinary silicate packing than lime stone ore powder pitch mixture and cement stone pitch mixture easy debulk bituminous concrete, pitch mixture total h
10、ole rate too very heavy difference have behind the shaping, 8% , 9.1% , 12% respectively. 1.2.2pitch viscidity influence pitch viscidity influence pitch mixture strength degree, and can debulk nature have something to do with mixture. At the mixture, high viscidity can pin down particle move often a
11、s debulk pitch, if pitch viscidity too low, is it collect material to be particle easy to move and push and shove in real time to press. When pitch mixture temperature is higher, pitch is it is it collect material particle rub lubricant of obstruction to overcome to make, when the mixture has alread
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- 专业 毕业设计 外文 翻译 沥青路面
