冷再生材料性能研究

冷再生材料性能研究第1頁/共30頁目錄第一章研究內(nèi)容和技術(shù)路線第二章原混合料性質(zhì)分析第三章水泥穩(wěn)定冷再生材料力學(xué)性能研究第四章水泥穩(wěn)定冷再生材料溫縮性能研究第五章水泥穩(wěn)定冷再生材料抗凍性能研究第六章瀝青路面就地冷再生效果分析第七章主要結(jié)論與建議第2頁/共30頁第一章研究內(nèi)容和技術(shù)路線圖1-1研究的主要內(nèi)容及方案第3頁/共30頁第二章原混合料性質(zhì)分析圖2-1銑刨材料1.舊瀝青路面材料性質(zhì)第4頁/共30頁圖2-2銑刨材料篩分試驗結(jié)果第5頁/共30頁第二章原混合料性質(zhì)分析a.厚度比7:18b.厚度比9:181.舊瀝青路面材料性能分析2.調(diào)整后材料級配圖2-3調(diào)整后級配曲線第6頁/共30頁第二章原混合料性質(zhì)分析1.舊瀝青路面材料性能分析2.調(diào)整后級配3.擊實特性圖2-5各配合比最佳含水量

圖2-6各配合比最大干密度第7頁/共30頁第三章水泥穩(wěn)定冷再生材料力學(xué)性質(zhì)研究1.無側(cè)限抗壓強(qiáng)度試驗齡期（d）面、基層厚度比集料添加量（%）水泥劑量（%）56777:1873.173.734.73103.073.955.159:1872.943.124.31102.913.364.62287:1874.745.145.71104.725.335.989:1873.764.364.96103.724.485.18907:1876.627.108.21106.507.238.439:1875.386.007.57105.066.317.70表3-1水泥穩(wěn)定冷再生材料抗壓強(qiáng)度試驗結(jié)果第8頁/共30頁圖3-1水泥穩(wěn)定冷再生材料7d、28d、90d抗壓強(qiáng)度試驗結(jié)果a.7db.28dc.90d第9頁/共30頁第三章水泥穩(wěn)定冷再生材料力學(xué)性能研究1.無側(cè)限抗壓強(qiáng)度試驗2.劈裂強(qiáng)度試驗表3-2水泥穩(wěn)定冷再生材料劈裂強(qiáng)度試驗結(jié)果齡期（d）面基層厚度比集料添加量（%）水泥劑量（%）567287:1870.430.580.78100.470.590.819:1870.370.460.7100.410.540.72907:1870.780.961.09100.801.051.179:1870.630.800.96100.640.831.02第10頁/共30頁圖3-2水泥穩(wěn)定冷再生材料28d、90d劈裂強(qiáng)度試驗結(jié)果a.28db.90da.28db.90d第11頁/共30頁第三章水泥穩(wěn)定冷再生材料力學(xué)性能研究1.無側(cè)限抗壓強(qiáng)度試驗2.劈裂強(qiáng)度試驗3.抗壓回彈模量試驗表3-3水泥穩(wěn)定冷再生材料抗回抗壓彈模量試驗結(jié)果（MPa）齡期（d）面基層厚度比集料添加量（%）水泥劑量（%）567287:1871168.571490.431634.31101712.361725.261769.949:1871114.571312.651526.16101629.331675.391680.97907:1871413.571825.431975.31101960.362081.262104.949:1871349.571738.651849.16101856.331992.392033.97第12頁/共30頁圖3-3水泥穩(wěn)定冷再生材料28d、90d抗壓彈模量試驗結(jié)果a.28db.90d第13頁/共30頁第四章水泥穩(wěn)定冷再生材料溫縮性能研究厚度比集料添加量（%）齡期(d)水泥用量（%）溫度區(qū)間℃20~1515~1010~50~5

-5~0

-10~-5

-15~-10

-20~-157:18775---2.2016.251.009.0010.006---2.9015.754.508.008.007---2.0516.554.009.007.00285---1.5016.004.507.5011.506---4.5014.007.005.008.507---3.5014.004.007.006.009054.452.301.351.8513.505.703.158.9061.101.501.451.5510.951.556.256.9072.251.300.951.559.252.254.505.751075---1.200.0513.2530.402.356---3.851.457.2031.804.757---2.250.009.7010.051.50285---5.502.5010.507.009.006---3.502.0014.006.007.007---1.503.5010.504.006.509052.551.801.101.1011.002.055.256.2064.051.551.401.055.401.152.653.1071.201.501.551.354.501.403.103.909:18775---3.7517.503.757.0011.256---4.0011.504.001.5014.007---11.009.253.005.256.50285---2.508.005.504.501.506---1.5010.005.004.502.507---1.008.505.503.003.009051.151.402.553.552.954.309.703.8061.603.153.002.604.855.6013.101.9072.151.551.502.751.052.254.251.751075---1.003.752.7527.502.006---3.000.508.2526.501.257---2.001.002.0022.501.00285---3.008.004.504.006.006---2.007.503.005.004.507---2.006.003.503.503.009053.550.101.201.900.505.1016.602.7060.902.150.651.200.703.156.550.7070.150.250.850.900.451.956.050.50表4-1各配合比冷再生材料溫縮試驗結(jié)果（10-6/℃）第14頁/共30頁圖4-1冷再生材料7天溫縮試驗結(jié)果第15頁/共30頁圖4-2冷再生材料28天溫縮試驗結(jié)果第16頁/共30頁圖4-3冷再生材料90天溫縮試驗結(jié)果第17頁/共30頁表4-2各配合比冷再生材料溫縮系數(shù)平均值（10-6/℃）面、基層厚度比齡期（d）7%集料10%集料水泥用量（%）水泥用量（%）5675677:1877.697.837.729.459.814.70288.207.806.906.906.505.20905.153.913.473.882.542.319:1878.657.007.007.407.405.70284.404.704.205.104.403.60902.323.041.801.451.120.52第18頁/共30頁圖4-3各因素與冷再生材料溫縮系數(shù)的關(guān)系第19頁/共30頁第五章水泥穩(wěn)定冷再生材料抗凍性能研究表5-1水泥穩(wěn)定冷再生材料凍融循環(huán)試驗結(jié)果齡期（天）面基層厚度比集料添加量(%)凍融循環(huán)后強(qiáng)度R凍(MPa)飽水強(qiáng)度Rc(MPa)耐凍系數(shù)K凍77:1873.003.120.96103.833.361.049:1872.903.730.78103.013.950.76287:1875.235.330.98105.085.140.999:1873.894.360.89104.094.480.91907:1876.786.950.98106.917.230.969:1875.226.000.87105.896.910.85第20頁/共30頁圖5-1冷再生材料凍融循環(huán)試驗結(jié)果第21頁/共30頁圖5-2各因素對冷再生材料抗凍性能的關(guān)系第22頁/共30頁第六章瀝青路面就地冷再生效果分析取樣樁號再生后再生前左右左右K72+400~K73+000190.0115.689.693.0K73+000~K74+000147.2124.5119.2116.1K74+000~K75+000131.1142.0115.2125.7K75+000~K76+000185.1180.5131.1159.9K76+000~K77+000183.7130.9122.5130.3K77+000~K77+500123.6114.0168.5180.2表6-1冷再生前后路面代表彎沉值第23頁/共30頁圖6-1冷再生前后路表彎沉值第24頁/共30頁圖6-2冷再生前后路面代表彎沉值第25頁/共30頁第七章主要結(jié)論與建議主要結(jié)論：1.瀝青路面就地銑刨材料的級配偏細(xì)；2.水泥穩(wěn)定冷再生材料的抗壓強(qiáng)度和劈裂強(qiáng)度都隨著集料摻加量、水泥劑量和齡期的增加而增加，同時與面基層厚度比成反比；3.瀝青面層所占比例越大水泥穩(wěn)定冷再生材料的剛度越小，同時集料摻量對冷再生材料的剛度有至關(guān)重要的影響。第26頁/共30頁第七章主要結(jié)論與建議4.水泥穩(wěn)定冷再生材料在0℃~-15℃范圍內(nèi)溫縮系數(shù)比較大，并且隨著水泥劑量、集料添