外文翻譯(土木工程專業(yè))--關(guān)于sbs改性瀝青配合比設(shè)計及施工技術(shù)的探討-建筑結(jié)構(gòu)-全文預(yù)覽
【正文】 dopt the space rate and press the solidity to control twowayly . It is subject to that survey every day to calculate the largest density of theory needed in space rate, is it go on according to pitch road surface mixture heavy relative density test (vacuum law ) (T0711 93 ) most to test. The onthespot pitch mixture space rate is 3% 6. One layer of pitch mixture of surface presses the inspection of the solidity, that survey the core kind serves as the standard. Four, conclusion With the further popularization in our country of modified pitch of SBS, will play an important role in road construction of our country, it hopes to be to SBS modified pitch in production construction specification requirement that should notice in constructing through the above, helpful to everybody, the abovementioned weak points, hope that every colleague puts forward the valuable suggestion . 。s best to reduce and sew , improve its roughness. In order to improve the roughness of the road surface, the surface layer should keep the sled type of the same discrepancy in elevation paving the control method of the thickness before and after adopting and paving . Because SBS pitch viscidity is relatively great, it is strong to seize strength, it is the rubber tyer type structure to use the back sleds of some pavers, the rubber tyer is apt to seize the thin particle of mixture, influence the roughness, so the sled is that rubber tyer type structure must be made into the slippery boots type structure of steel after the paver. Pave the speed and should be controlled in 2 meters per minute, make sure to pave without stopping slowly , evenly and in succession , forbid varying the speed or layovering at will . The ones that improved and paved in the course were pressed closely knit degree in advance. The modified pitch SBS mixture is mainly by collecting inlaying the function of crowding of material thickly under the hightemperature state, but improve the rammer hammer properly and shake the frequency of smashing , make surplus debulk coefficient reduce, the mark pressed for the first time is extremely small, and then guarantee the final roughness of the road surface . 3, the specification requirement rolled To the security mixing type mixture, its suitable rolling the temperature range is 130 degrees Centigrade 150 degrees Centigrade, it roll temperature and is not lower than 110 degrees Centigrade finally. The debulk craft of the pitch mixture of SBS goes on in line with the following principle: According to is it roll the Eight Character policy roll to follow keep , high frequency , low piece closely , not slow , the road roller must be followed closely in the back of the paver, only by rolling make better result under the hightemperature condition can it, the speed of debulk is controlled in 4 5km/h. It is balanced to roll the speed, close vibration when falling back, the direction should change gradually, mustn39。 Press temperature and is not below 150 degrees Centigrade for the first time。表面層瀝青混合料壓實度的檢驗，以實測芯樣為準(zhǔn)。特別注意：施工時若發(fā)現(xiàn)壓路機粘輪時，用洗 衣粉水較好。 SBS 瀝青混合料的壓實工藝本著以下原則進行：按照 “緊跟、慢壓、高頻、低幅 ”“碾壓八字方針進行碾壓，壓路機必須緊跟攤鋪機的后面，只有在高溫條件下碾壓才能 取得更好的效果，壓實速度控制在 4－ 5km/h。攤鋪速度應(yīng)控制在 2 米 /分鐘，做到緩慢 、均勻、連續(xù)不間斷地攤鋪，禁止隨意變換速度或中途停頓。其余要求應(yīng)滿足改性瀝青路面施工技術(shù)規(guī)范的技術(shù)要求。與 AH70 基質(zhì)瀝青相比， SBS 瀝青的粘度和軟化點顯著增加， SBS瀝青的運輸儲存和路面面層施工有一些與基質(zhì) 瀝青不同的要求，只有正確使用才能達(dá)到預(yù)期效果。 C、混合料體積指標(biāo)的測定要統(tǒng)一，對于密級配瀝青混合料試件密度的測定應(yīng)統(tǒng)一采用表干法。 23注意事項 : 改性瀝青混和料的設(shè)計過程中以下問題上引起注意。 （二）、瀝青混合料配合比設(shè)計： 改性瀝青混合
畢業(yè)設(shè)計相關(guān)推薦
鄂ICP備17016276號-1