SBS改性沥青外文翻译文献.doc

外文文献翻译 () 英文原文 The SBS modified pitch match ratio design and discussion of construction technology The summary under good design match ratio and execution conditions, SBS pitch can make the durability on the pitch road surface and high-temperature stability obviously improve . This text will test the situation according to the construction of No. two in the south , will tell the construction specification requirement for the modified pitch of SBS briefly . First, SBS modified pitch summary The modified pitch of SBS is on the basis of original host pitch (AH-70 ), is it add 2.5% - 3.0% to mix, 4.0% SBS modify pharmaceutical, modify pitch after , compare with original pitch, its high-temperature viscid increases, soften and click rising. Under good design match ratio and execution conditions, the durability on the pitch road surface and high-temperature stability obviously improve. Test while going on in a large number of rooms while the modified pitch of SBS produces, carry on the on-the-spot experiment to its technical indicator after production, experimental result indicate outside mix 3.0% modified pitch of SBS , soften some , needle enter degree index meet modified pitch standardize the request, can make the match ratio design of the pitch mixture with the modified pitch of SBS . Second, the match ratio of the pitch mixture of SBS is designed In order to enable the mixture designed to reach the implementing effect, need to propose the following request from a great deal of respects , such as material requiring , construction craft , quality control standard and quality control method ,etc., hope to arouse attention. (1) , the raw materials are required Collect the material thickly by 1-1: For the thick collection material of layer the modified pitch mixture, should adopt the broken stone or garrulous gravel , its specification of foot-path and quality requirement should accord with the regulation of pitch road surface construction technical specification of th