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)-資料下載頁
2025-05-11 12:00本頁面
【導(dǎo)讀】本文將根據(jù)南二路的施工試驗情況，簡要講述SBS改性瀝青的施工技。改性劑，改性后的瀝青，與原瀝青相比，其高溫粘度增大，軟化點升高。在良好的設(shè)計配合。比和施工條件下，瀝青路面的耐久性和高溫穩(wěn)定性明顯提高。在SBS改性瀝青生產(chǎn)過程中。質(zhì)量控制方法等諸多方面提出以下要求，希望能夠引起注意。、干燥、無風(fēng)化、無有害雜質(zhì)，且具有一定硬度和強(qiáng)度。，破碎礫石用于高速公路、一級公路時，應(yīng)采用大礫石破碎，并至少應(yīng)有兩個以上的破碎面。存在著較大差異，粗集料與瀝青的粘附性應(yīng)不小于4級。的礦粉，礦粉要求干燥、潔凈，不宜使用混合料生產(chǎn)中干法除塵的回收粉。的含量必須考慮粗集料本應(yīng)含有的粉塵部分。由于SBS改性瀝青混合料的施工溫度要求較高，建議拌合溫度控制在160℃,運。符合技術(shù)規(guī)范要求，必須保證攤鋪機(jī)前至少兩輛車等待卸料，決不能出現(xiàn)攤鋪機(jī)等車的現(xiàn)象。瀝青混合料上轉(zhuǎn)向、調(diào)頭、左右移動位置。突然剎車或停車休息，通過南二路第一、二合同
【正文】 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。t twist curved to walk, to roll starting point or terminal point can twist amp。 warping roll together while being every, dispel and roll and connect a mark . Will never allow to change direction , turn back , move the position from side to side in paving the pitch mixture newly. Brake or is it have a rest to park suddenly, through south two No. first, two contract sections of SBS pitch test section, the definite debulk craft is each rolled 3 times for DD110 or 2 shelves of DD130 road roller, namely press once for the first time, highfrequency low pieces of vibration are rolled 2 times, press 2 times after all . Pay special attention to: While constructing when find that the road roller glues the wheel, it is better to use water of the washing powder. 4, the quality control of the pitch mixture of SBS To one floor of mixture pitch, the debulk result of the scene should adopt 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 .
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