1、 Addis Ababa-Adama Toll Motorway Project Target Proportioning Design Report of Asphalt Concrete For Binder Course( AC-13C) Lab Ref No : AA-TPD-120201 Consultants : Beijing Expressway Supervision Co.Ltd Contractor : China Communications Construction Company Ltd Specification Used in Design Author or
2、AgencyTitleDocument or Report No Year of Implementation Addis Ababa-Adama Toll Motorway Pavement Design Drawing2011 Ministry of Communications of The Peoples Republic of China Technical Specification For Construction of Highway Asphalt PavementsJTG F40-20042004 Test Methods of Aggregate for Highway
3、EngineeringJTJ E42-20052005 Standard Test Methods of Bitumen And Bituminous For Highway EngineeringJTJ 052-20002000 -1Test Result of Material Material NameSourceIndex of TestResult of Test RequiredIndex of TestResult of Test Required (1018) Aggregate K10+200Quarry Aggregate Crushed Value (ACV)13.526
4、%Wearing Ratio (LAA) 10.112%Grade of adhesion (Stripping) 11.928% Flat and Elongated Index Total Aggregate12.115%Soundness of Aggregate 412% 9.5mm55 9.5mm 100cm Solubility 99.7199.5% Flash Point319260oC Loss of weight0.03 0.8% Proportion Proportion Proportion (%) (%) (%)31.526.5191613.29.54.752.361.
5、180.60.30.150.075 111100.0100.0100.0100.0100.0100.0100.0100.0100.0100.096.893.082.6 363431100.0100.0100.0100.0100.0100.0100.092.462.545.028.820.614.2 999100.0100.0100.0100.0100.0100.098.911.75.34.23.83.63.3 252525100.0100.0100.0100.0100.098.611.70.50.50.40.40.40.3 293134100.0100.0100.0100.088.819.20
6、.30.20.20.10.10.10.1 10010010010096.876.248.935.524.217.711.88.86.3 10010010010096.574.646.933.722.916.811.28.46.1 10010010010096.272.243.930.92115.510.47.85.6 100.0100.0100.0100.0100.085.068.050.038.028.020.015.08.0 100.0100.0100.0100.090.068.038.024.015.010.07.05.04.0 100.0100.0100.0100.095.076.55
7、3.037.026.519.013.510.06.0 Kind of Aggregate Mineral Filler 03mm Result of Sieve Analysis (%) Synthetic Grading of Aggregate Synthetic Grading of Aggregate Synthetic Grading of Aggregate 510mm DensityFind out asphalt-aggregate ratio range that meet the requirements of asphalt concrete indexes(OACmax
8、,OACmin) , the average value of the range is OAC2;If OAC1 between the OACmax and OACmin ,that the design practical ;Take OAC1 and OAC2 median value as the optimum asphalt-aggregate ratio of target proportioning design;Combined with local climate characteristics and the actual situation , finally get
9、 the optimum asphalt-aggregate ratio. 17 18 19 20 21 22 23 24 25 3.03.54.04.55.05.56.0 2.472 2.492 2.512 2.532 2.552 2.572 3.03.54.04.55.05.56.0 0.0 2.0 4.0 6.0 8.0 10.0 3.03.54.04.55.05.56.0 Bulk Specific Gravity (g/cm3) Asphalt Aggregate Ratio(%) Stability (KN) Asphalt Aggregate Ratio(%) Air Voids
10、 (%) Asphalt Aggregate Ratio(%) 15 20 25 30 35 40 45 3.03.54.04.55.05.56.0 Flow Value (mm) Asphalt Aggregate Ratio(%) 10.0 12.0 14.0 16.0 3.03.54.04.55.05.56.0 Asphalt Aggregate Ratio(%) VMA (%) 40.0 50.0 60.0 70.0 80.0 90.0 100.0 3.03.54.04.55.05.56.0 VFA (%) Asphalt Aggregate Ratio(%) a1=a2=a3=a4=
11、 3.505.509090 3.505.507575 4.555.386060 4.155.504545 3.55.53030 4.544.991515 4.554.554.994.99 090090 31% 25% 9% 34% 1% ； 14 最值 密度 稳定度 孔隙率 流值 4.99% 间隙率 饱和度 4.76%(a1+a2+a3+a4)/4= OACmin= 4.55%(OACmin+OACmax)/2= According to local climate and the actual situation,Take 4.8%as optimum asphalt-aggregate r
12、atio. According to the above diagram: 5.10%4.84% OAC=(OAC1+OAC2)/2= 4.78% 4.50% OAC2=OACmax= OAC1= Submit by : Checked by: Witness by: Supervisor: Contractors representative Engineer representative Consultants representative Material Engineer(Consultant) 4.80% 4.77% According to the analysis of expe
13、riment results, choose gradation as the design gradation, Aggregate ratio 1810：510：35:03：mineral filler= Result of Design 14.0 Bulk Specific Gravity (g/cm3) Percent Air Voids (%) Marshall Stability (KN)22.3 4.0 2.668 10.9 NZ admixture =0.3%(External mixing method)；According to the above ratio produc
14、ed Marshall sample, test results are as follows： Powder Binder Ratio (%)1.4 Effective thickness of membrane(um) 2.561Effective Asphalt Volume Percentage (%) 7.77 Technical index of MixtureTest ResultRequiredTest Result 0.61.6 Asphalt /Aggregate =4.8% Theoretical Maximum Density (g/cm3) Technical ind
15、ex of Mixture 35 Required 8Percent Void In Mineral Aggregate (%) Stability Air Voids Flow Value VMA VFA OACmin OACmax 3.03.54.04.55.05.56.0 Density Asphalt Aggregate 2800 NZ(0.3%) Required (%) (20oC) 85 Asphalt /Aggregate (%) 4.8% Immersion Stability (KN) Residual Stability 71.424.9 Submit by : Chec
16、ked by: Witness by: Supervisor: 2040 Splitting Strength Contractors representative Engineer representative Consultants representative Material Engineer(Consultant) According to the optimum asphalt-aggregate ratio 、gradation ； by immersion marshall test ,splitting test, dynamic stability test, modulu
17、s experiment；to check the performance of the Asphalt Concrete；test results are as follows： Flow Value (0.1mm) Mix Design Dectection 6575VFA (%) The Target Proportioning Design of asphalt mixture mechanical index, volume indicators meet the design specifications and drawings, this design can guide AC
18、-13C Target mix ratio design. Freeze-Thaw (TSR) (%) 94.7 80 Dynamic Stability (60oC/0.7MPa)(MPa) 2100 1746.4 1500 2.4 (15oC) 2497.8 1.2 16310 Conclusion Effective Asphalt Content (%)4.34Marshall Module (KN/mm) Modulus (MPa) 20.3 9.0 91.0 Admixture (Proportion) Submit by : Checked by: Witness by: Sup
19、ervisor: Contractors representative Engineer representative Consultants representative Material Engineer(Consultant) 油石比油石比0.0 (%)3.54.04.55 油石比油石比0.03.54.04.55.05.5 稳定度022.523.224.622.517.6 序号012345 022.523.224.622.517.6 0.03.54.04.55.05.5 最大值24.6 序号3 4 3210#NUM!#NUM! 24.623.222.50#NUM!#NUM! 24.623
20、.222.50 22.503.500 3.503.5022.5 3 345#NUM!#NUM!#NUM! 24.622.517.6#NUM!#NUM!#NUM! 24.622.517.6 17.6#NUM!5.500 5.5#NUM!5.5017.6 8.46.645.23.42.87 3.504.004.505.005.50 3.42.875.23.45.385.385.193.42 55.504.55034.5005.000 4.554.55 05 16.619.521.226.231.5 3.544.555.54.154.15 5.38 4.55 4.55 孔隙率 5.50 3.50 #
21、NUM! 沥青沥青 稳稳 定定 度度 5.38 1.24 4.00 4.84 21.219.5#NUM!31.5020 4.54#NUM!5.55.505.50 031.5 044.455.364.175.379.9 4.80%3.544.555.54.544.54 75.364.175.364.1506575.30175 64.149441 54.554.54.994.9954.5 075 3.53.5 2.4970 5.55.53456 2.57011121314 3.53.554 15.101312 5.55.5 14.30 都有峰值密度无稳定度无都无实际 01230 沥青密度沥青含量 密度 间隙率 4.15 4.15 4.54 4.544.99 4.994.76 饱和度 #NUM! 5.50 流值 70 合成矿料毛体积相对密度合成矿料有效相对密度 2.8422.9201.0244.57
