1、瀝青面層文件編號：1010齊白大路齊齊哈爾至泰來省界段工程建設(shè)工程國軍料場下面層 AC-20 目標(biāo)協(xié)作比設(shè)計齊泰大路工程路面工程材料協(xié)作比設(shè)計與施工期技術(shù)效勞組2022 06 10 日哈爾濱工業(yè)大學(xué)交通試驗中心哈爾濱工業(yè)大學(xué)交通試驗中心國軍料場下面層 AC-20 目標(biāo)協(xié)作比設(shè)計齊泰大路下面層為AC-20。應(yīng)用國軍料場生產(chǎn)1926.5、9.519、4.759.5mm2.364.75、04.75石屑作為下面層協(xié)作比的原材料；承受吉林省梨樹縣郭家店大頂山礦粉和安達(dá)SBS 改性瀝青。開展原材料和混合料的各項試驗，確定各標(biāo)段瀝青混凝土協(xié)作比。具體試驗簡介如下：1、原材料試驗123Si256集料粗集料的針

2、片狀含量10112瀝青旋轉(zhuǎn)薄膜加熱試驗等。2、混合料試驗1馬歇爾擊實試驗；2馬歇爾試件密度試驗表干法34馬歇5678滲水試驗。3、試驗依據(jù)大路工程巖石試驗規(guī)程JTG E42022大路工程集料試驗規(guī)程JTG E42-20223青及瀝青混合料試驗規(guī)程 JTG05220224大路JTGD50-20225大路瀝青JTG F42022。4、 試驗設(shè)備：萬能壓力機(jī)，標(biāo)準(zhǔn)篩，瀝青針入度儀，瀝青延度儀，電子秤，烘箱，馬歇爾擊實儀，馬歇爾穩(wěn)定度儀，車轍試驗機(jī)，MTS等。二 原材料試驗集料性質(zhì)評價基巖各項性質(zhì)，見表 1。依據(jù)大路工程集料試驗規(guī)程JTG E42-2022開24。表1基巖各項性質(zhì)料源料源名稱國軍石場橄

3、欖玄武巖55.92118.2表2集料根本性質(zhì)匯總規(guī)格mm銹面碎石含量(%)針片狀含量(%)0.075mm 以下含1926.543.711.10.99.51950.318.21.34.759.551.716.71.82.364.752.004.753.5正常碎石與瀝青粘附性級基質(zhì)瀝青34級基質(zhì)瀝青改性瀝青34%11.73單檔集料密度粒徑mm191613.29.54.752.361.18 及以下表觀相對密度2.7462.7612.7662.7662.7782.7772.831表干相對密度2.6832.6842.6772.6682.6812.6252.611毛體積相對密度2.6472.6402.62

4、72.6122.6262.5392.491%1.361.651.922.132.083.394.82表4礦粉性質(zhì)試驗工程試驗工程表觀密度2.717親水系數(shù)塑性指數(shù)加熱安定性數(shù)值等0.83.5顏色無變化瀝青性質(zhì)JTG 試驗得到SBS5。表5SBS 改性瀝青技術(shù)指標(biāo)項目數(shù)針入度(100g，5s)25(0.1mm)71延度(5cm/min)5(cm)41軟化點(環(huán)球法)75.8性恢復(fù)25%97運動粘度PaS1351.03技術(shù)標(biāo)準(zhǔn)608040759013旋轉(zhuǎn)薄膜加熱試驗(163,75min)質(zhì)量損失(%)針入度比(%)67延度5(cm)31原樣瀝青1.0RTFOT試驗后1.66001.065301.0

5、2.25000PAV老化后蠕變勁度-18 (Mpa)310m 值0.43000.3三 目標(biāo)協(xié)作比設(shè)計3.1協(xié)作比初步調(diào)試JTG F402022的級配范圍要求，初步調(diào)試混合料協(xié)作比，6。3.2確定最正確油石比承受瀝青路面施工技術(shù)標(biāo)準(zhǔn)JTG F402022B 熱拌瀝青混合料協(xié)作比設(shè)計方法7 匯總了馬歇爾試件的毛體積密度、理論最大相對密度、空隙率、礦料間隙率、瀝青飽和度、穩(wěn)定度、流72。4.5%。通過以下篩孔mm的質(zhì)量百分率%6通過以下篩孔mm的質(zhì)量百分率%篩孔1926.59.5194.759.50-4.7500.3礦粉合成下限上限31.5100100100100100100.0100.010010

6、026.5100100100100100100.0100.01001001934.0100100100100100.093.490100162.298.4100100100100.089.4789213.2081.8100100100100.080.962809.5035.8100100100100.057.950724.7502.638.084.095.4100.037.226562.36004.753.263.4100.025.316441.18000.933.240.0100.018.112330.6000.220.925.2100.013.68240.3000.28.310.398.9

7、9.05170.15000.23.84.791.76.94130.075000.21.82.082.75.637比例1050022126100圖1AC-20 目標(biāo)協(xié)作比設(shè)計級配曲線哈爾濱工業(yè)大學(xué)交通試驗中心哈爾濱工業(yè)大學(xué)交通試驗中心mm礦料合mm礦料合礦料占空氣中毛體積質(zhì)量相對密大相對V試件編油石比水中質(zhì)表干質(zhì)成毛體混合料號%1234平均量g 量g積相對的比例g度密度密度%0123456789A-13.564.5064.3464.2264.3464.351146.8651.91149.32.3062.4982.55496.6A-23.564.2864.5464.2064.3864.351144

8、.4664.31155.42.3302.4982.55496.6A-33.564.1464.2463.9864.6064.241143.6664.21154.22.3342.4982.55496.6平均3.52.323B-14.064.2664.4264.2064.4664.341159.9670.51164.42.3482.4662.55496.2B-24.064.8264.4664.8064.9064.751163.2675.81167.62.3652.4662.55496.2B-34.065.0065.3664.8864.3664.901154.5666.91160.42.3392.46

9、62.55496.2平均4.02.351C-14.564.0063.8664.2463.8063.981143.6663.41146.92.3652.4552.55495.7C-24.564.1064.1664.2064.0264.121141.8663.71145.42.3702.4552.55495.7C-34.563.8464.0063.7063.8463.851148.2667.41151.82.3702.4552.55495.7平均4.52.369D-15.063.7463.7263.3063.4463.551154.8666.41156.72.3552.4412.55495.2D-

10、25.063.9463.2063.0063.9063.511159.1668.81160.32.3582.4412.55495.2D-35.064.1664.4063.7064.1664.111153.9668.11157.82.3562.4412.55495.2平均5.02.357E-15.564.3463.4464.3463.7063.961158.6672.31163.52.3592.4392.55494.8E-25.563.2663.0062.8663.3063.111156.3670.11157.92.3702.4392.55494.8E-35.563.9863.3663.8464.

11、1063.821148.6665.01150.62.3652.4392.55494.8平均5.52.365圖2馬歇爾試件各項指標(biāo)隨油石比變化曲線哈爾濱工業(yè)大學(xué)交通試驗中心混合料路用性能評價瀝青混合料的高溫、低溫存水穩(wěn)定性能分別用車轍試驗、低溫小梁彎曲試驗和凍融劈裂試驗來評價。另外，瀝青混合料的密水性用滲水試驗來評價。低溫小梁彎曲試瀝青混合料的高溫、低溫存水穩(wěn)定性能分別用車轍試驗、低溫小梁彎曲試驗和凍融劈裂試驗來評價。另外，瀝青混合料的密水性用滲水試驗來評價。低溫小梁彎曲試驗在后續(xù)工作中補(bǔ)充?；旌狭蠞B水性能在鋪筑的下面層試驗段上開展。各項性能的試8 911。表8瀝青混合料各項路用性能匯總指標(biāo)指標(biāo)

12、/mm6575最大彎拉應(yīng)變()數(shù)值2210MPa497182.2滲水系數(shù)mL/min試驗段實測結(jié)論AC-20 目標(biāo)協(xié)作比滿足各項路用性能要求。哈爾濱工業(yè)大學(xué)交通試驗中心哈爾濱工業(yè)大學(xué)交通試驗中心表9瀝青混合料車轍試驗試件編45min深度mm試件編45min深度mm60min深度mm 試驗機(jī)類型修正系數(shù)試件系數(shù)試驗輪來回碾壓高度(mm)號mm/min11.571.6621.821.911.01.04231.651.76編空氣中質(zhì)水中質(zhì)表干質(zhì)吸水率毛體積相理論最大空隙率號(%)對密度相對密度%11152.2661.51159.90.72.3122.4555.864.1264.3264.002116

13、1.9667.81168.00.52.3232.4555.463.9264.0063.7831158.6665.81162.10.32.3342.4554.963.5863.7063.9641159.4666.91163.60.42.3342.4554.963.4063.3863.5051161.4670.71166.10.42.3442.4554.564.0064.0864.5061156.0665.51159.60.32.3402.4554.764.1263.3463.4071157.6667.21160.50.32.3472.4554.462.9063.1463.3881158.1668

14、.51160.90.22.3522.4554.263.7463.6064.0091158.2668.21162.80.42.3422.4554.664.6065.0065.32101154.5664.51158.70.42.3362.4554.863.6663.5264.1611 瀝青混合料低溫小梁彎曲試驗序號ma/gmw/gmf/gfg/cm3tg/cm3VV/%d/mmPB/kNb/mmh/mmL/mm1598.3343.7599.72.3372.4554.80.4361.3031.2935.09200.02621.0356.8622.32.3392.4554.70.4051.4031.2035.05200.03608.2352.0609.82.3592.4553.90.3201.2930.7734.85200.04616.4355.1617.72.3472.4554.40.4181.3131.5034.81200.05600.0346.2601.02.3552.4554.10.4211.3131.0133.96200.06604.0347.66