外文翻译(土木工程专业)--关于sbs改性沥青配合比设计及施工技术的探讨-建筑结构(编辑修改稿)

外文翻译(土木工程专业)--关于sbs改性沥青配合比设计及施工技术的探讨-建筑结构(编辑修改稿)内容摘要：

erence of the pitch , exert a great influence on pitch mixture. To the expressway , Class I Highway pitch mixture, the content of the natural sand is unsuitable to exceed 20%, the stone bits powder of available 03mm replaces the natural sand. Pack the material by 13 Packing of layer should clean dry the mixture for modified pitch, specification requirement that quality should accord with the regulations of pitch road surface technical specification of the highway its. 1, the modified pitch mixture should be adopted the strong base rock (limestone , magmatic rock ) ,etc. to increase the building stones of swimming skill to rub the detailed ore powder that got to pack the material, ore it is dry clean , unsuitable to use mixture production do recovery powder , law of dust removal for powder to require. 2, while adopting the cement, subdueing the lime powder to make packing, its consumption is unsuitable to exceed 2% of the ore material general quantity. 3, does not remend using and producing and arranging and retrieving the powder in the mixture one floor of mixture of pitch surface, when the plasticity index is smaller than 4 and hydrophilic coefficient is smaller than , through testing all right some use, retrieve 1/4 that can39。 t exceed the ore powder general quantity of each one of consumption of powder. (2) , pitch mixture match ratio is designed: Match ratio design of the modified pitch mixture, should follow the pitch road surface construction technical specification of the highway China mixes pitch mixture goal match ratio , match ratio of production that are designed of match ratio and tries mixing three stages that try paving about heat, confirm ore material one grade of mixing and best modified pitch consumption. 21 grades mixing Pitch mixture match ratio is designed grade mixes and should adopt Bei LeiFa to design , grade is worthy of choosing the principle: Should fetch grade and mix lower limit to sift the hole in order to reach under mixture of Model AC13I. 22 powder expect than The amount smaller than content exerts a tremendous influence to the index of volume of pitch mixture and way with performance , mixture grade content to smaller than must consider thick to collect dust part that material should contain in mixing. Require ore powder content exceed pitch content , smaller than part and ratio , pitch of content powder material than should exist 1 1., should fetch the content of ore powder of one floor of mixture the pitch 5. 23 precautions: The modified pitch mixes and arouses attention on the following problem in the design process with the material . Shut and should hit real temperature according to the road surface construction technical specification of modified pitch and confirms according to glueing the warm relation curve of glued material of pitch in the mixing of A , mixing and material, mixing and shutting , hitting real temperature and should mix and shuts temperature with mix and shut the factory , rolls temperature live while carrying on the indoor match ratio design. Propose that temperature sees the following form: The test of the modified pitch and construction temperature: Temperature security mixes the pitch mixture It is not below 160 degrees Centigrade to mix the temperature of shutting。 Press temperature and is not below 150 degrees Centigrade for the first time。 It is not below 140 degrees Centigrade to reply the temperature of pressi。