泡沫沥青混合料的设计-David E. Newcomb
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最佳发泡含水量 （Wopt%）测定 最佳沥青含 量
含水量1%、2%、3% 的泡沫沥青混合料的 集料裹附性评价
AASHTO T283 间接拉伸强度
通过AAHTO/DOT规范
性能评价
最佳含水量时制备热 拌沥青混合料和泡沫 温拌沥青混合料试样
ASTM D7369回弹模量 (MR)或AASHTO 342/TP79动态模量（E*）
NCHRP 9-53
开发泡沫混合料的设计规范
材料选择
在实验室用激光/摄像 装置测量在160℃、含 水率1%时发泡
是
满足发泡标准？
SUPERPAVE配合比 设计 AASHTO R35
修改沥青或添加/修 改发泡添加剂
否
最低t τmax Wopt% CI > CIHMA
含水量1%、2%。3% 的泡沫沥青混合料的 施工和易性评价
9
Superpave混合料设计4个步骤
1. 材料选择
2. 设计集料结构
TSR
August 21-22, 2014
3.设计胶结料含量
JSTI Workshop
4. 水稳定性
10
DEVELOP FOAM MIX DESIGN PROTOCOL
MATERIALS SELECTION Laser/Camera Measurement on Laboratory Foaming at 160°C & 1% water Yes Meets foaming criteria? No SUPERPAVE MIX DESIGN AASHTO R35 Modify asphalt binder or add/modify foaming additive
OPTIMUM WATER CONTENT (Wopt%) DETERMINATION
Optimum Binder Content
Indirect Tensile (IDT) Strength per AASHTO T 283 Specimen Fabrication for HMA and Foamed WMA at Wopt% Resilient Modulus (MR) per ASTM D 7369 or Dynamic Modulus (E*) per AASHTO 342/TP79 Hamburg Wheel Tracking Test (HWTT) per AASHTO T 324 or Flow Number per TP79
• Mixture Analysis
– mixture performance testing – pavement performance prediction
• Software
August 21-22, 2014 JSTI Workshop 5
• 沥青胶结料规范
– 胶结料试验方法
集成系统
Superpave
• Lab-Mixed, Lab-Compacted (LMLC) specimens at Wopt % = 1.5 and HMA • Tmix = 300F • STOA 2h at 275F
August 21-22, 2014 JSTI Workshop NHRP 9-53
混合料设计规范验证
Pass AASHTO/DOT Specification
PERFORMANCE EVALUATION
Equivalent or better performance than HMA
Fail AASHTO/DOT Specification
August 21-22, 2014
JSTI Workshop
• 混合料设计
– 组分要求 – 体积比例
• 混合料分析
– 混合料性能测试 – 路面性能预测
• 软件
August 21-22, 2014 JSTI Workshop 6
Construction
Rutting
Fatigue Cracking
Low Temp Cracking [DTT]
[RV]
[DSR]
[BBR]
Pavement Age
No aging
August 21-22, 2014
RTFO - aging PAV - aging
JSTI Workshop 7
疲劳开裂 施工 车辙
低温开裂
[DTT] [RV] [DSR] [BBR]
路面寿命
未老化
August 21-22, 2014
RTFO 短期老化 PAV 长期老化
JSTI Workshop 8
4 Steps of Superpave Mix Design
1. Materials Selection
2. Design Aggregate Structure
TSR
August 21-22, 2014
3. Design Binder Content JSTI Workshop 4. Moisture Sensitivity
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
Lowest τmax
Wopt%
Workability Evaluation on Foamed Mixture at 1, 2, and 3% water
CI > CIHMA
Coatability Evaluation on Foamed Mixture at 1, 2, and 3% water
AASHTO T283间接拉伸 （IDT）
通过AASHTO/DOT 规范 等同或比热拌沥青混合 料性能更好
不没有通过 AASHTO/DOT 规范
等同或比热拌沥青混合 料性能更好 没有通过AAHTO/DOT 规范
AASHTO T324汉堡车辙 试验（HWTT）或TP79进 行重复蠕变试验
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
• Asphalt plant in Huntsville, Texas • Accushear foaming unit • Validation Steps
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
混合料设计规范验证
材料选择
在实验室用激光/摄像装 置测量在160℃、含水率 1%时发泡
是
满足发泡规范？
Superpave设计规范 AASHTO R35
否
修改沥青或添加/修 改发泡添加剂
August 21-22, 2014
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
混合料设计规范验证
• 德克萨斯州亨茨维尔沥青厂 • Accushear 发泡机 • 验证步骤
1. 访问胶结料工厂，进行胶结料发泡测试并收集松散混 合料样品（发泡含水量在5.5%） 2. 遵循泡沫沥青混合料设计规范来获取最佳发泡含水量 Wopt % 3. 再次访问胶结料工厂,调整含水率至 Wopt %, 进行胶结 料发泡测试并收集松散混合料样品（最佳发泡含水量）
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
Mixing Process
August 21-22, 2014
Leabharlann Baidu
JSTI Workshop
15
混合过程
August 21-22, 2014
JSTI Workshop
16
MIX DESIGN PROTOCOL VALIDATION
NCHRP 9-53
混合料设计规范验证
最低 τmax
Wopt%
含水量1%、2%。3% 的泡沫沥青混合料施 工和易性评价
CI > CIHMA
含水量1%、2%、3% 的泡沫沥青混合料集 料裹附性评价
最佳发泡含水量 （Wopt%）测定
最佳沥青含 量
最小 tmax @ 1.5% 含水量
August 21-22, 2014
Lowest τmax Wopt% CI > CIHMA
Workability Evaluation on Foamed Mixture at 1, 2, and 3% water
Coatability Evaluation on Foamed Mixture at 1, 2, and 3% water
1. Visit the plant to perform binder foaming tests and sample materials (water content during operation 5.5%) 2. Apply mix design protocol to obtain Wopt % 3. Revisit the plant , adjust the water content to Wopt %, perform binder foaming test, sample materials
MIX DESIGN WITH FOAMED ASPHALT
August 21-22, 2014
JSTI Workshop
1
泡沫沥青混合料的设计
August 21-22, 2014
JSTI Workshop
2
Superpave
August 21-22, 2014
JSTI Workshop
3
Superpave
CI @ 1.5% 含水量> CI 热拌沥青混合料
JSTI Workshop NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
Improved tmax at Wopt = 1.5% vs. 5.5% & HMA
August 21-22, 2014
JSTI Workshop
OPTIMUM WATER CONTENT (Wopt%) DETERMINATION
Optimum Binder Content
Min tmax @ 1.5% water content
August 21-22, 2014 JSTI Workshop
CI @ 1.5% water content > CI HMA
August 21-22, 2014
JSTI Workshop
4
• Asphalt Binder Specification
– binder test methods
Integrated System
Superpave
• Mixture Design
– component requirements – volumetric proportioning
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
混合料设计规范验证
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
MATERIALS SELECTION Laser/Camera Measurement on Laboratory Foaming at 160°C & 1% water Yes Meets foaming criteria? No SUPERPAVE MIX DESIGN AASHTO R35 Modify asphalt binder or add/modify foaming additive
NCHRP 9-53
混合料设计规范验证
改善的 tmax 在 Wopt = 1.5% 与5.5% & HMA
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
Indirect Tensile (IDT) Strength per AASHTO T 283 Specimen Fabrication for HMA and Foamed WMA at Wopt% Resilient Modulus (MR) per ASTM D 7369 or Dynamic Modulus (E*) per AASHTO 342/TP79 Hamburg Wheel Tracking Test (HWTT) per AASHTO T 324 or Flow Number per TP79 Pass AASHTO/DOT Specification Equivalent or better performance than HMA Fail AASHTO/DOT Specification PERFORMANCE EVALUATION
含水量1%、2%、3% 的泡沫沥青混合料的 集料裹附性评价
AASHTO T283 间接拉伸强度
通过AAHTO/DOT规范
性能评价
最佳含水量时制备热 拌沥青混合料和泡沫 温拌沥青混合料试样
ASTM D7369回弹模量 (MR)或AASHTO 342/TP79动态模量（E*）
NCHRP 9-53
开发泡沫混合料的设计规范
材料选择
在实验室用激光/摄像 装置测量在160℃、含 水率1%时发泡
是
满足发泡标准？
SUPERPAVE配合比 设计 AASHTO R35
修改沥青或添加/修 改发泡添加剂
否
最低t τmax Wopt% CI > CIHMA
含水量1%、2%。3% 的泡沫沥青混合料的 施工和易性评价
9
Superpave混合料设计4个步骤
1. 材料选择
2. 设计集料结构
TSR
August 21-22, 2014
3.设计胶结料含量
JSTI Workshop
4. 水稳定性
10
DEVELOP FOAM MIX DESIGN PROTOCOL
MATERIALS SELECTION Laser/Camera Measurement on Laboratory Foaming at 160°C & 1% water Yes Meets foaming criteria? No SUPERPAVE MIX DESIGN AASHTO R35 Modify asphalt binder or add/modify foaming additive
OPTIMUM WATER CONTENT (Wopt%) DETERMINATION
Optimum Binder Content
Indirect Tensile (IDT) Strength per AASHTO T 283 Specimen Fabrication for HMA and Foamed WMA at Wopt% Resilient Modulus (MR) per ASTM D 7369 or Dynamic Modulus (E*) per AASHTO 342/TP79 Hamburg Wheel Tracking Test (HWTT) per AASHTO T 324 or Flow Number per TP79
• Mixture Analysis
– mixture performance testing – pavement performance prediction
• Software
August 21-22, 2014 JSTI Workshop 5
• 沥青胶结料规范
– 胶结料试验方法
集成系统
Superpave
• Lab-Mixed, Lab-Compacted (LMLC) specimens at Wopt % = 1.5 and HMA • Tmix = 300F • STOA 2h at 275F
August 21-22, 2014 JSTI Workshop NHRP 9-53
混合料设计规范验证
Pass AASHTO/DOT Specification
PERFORMANCE EVALUATION
Equivalent or better performance than HMA
Fail AASHTO/DOT Specification
August 21-22, 2014
JSTI Workshop
• 混合料设计
– 组分要求 – 体积比例
• 混合料分析
– 混合料性能测试 – 路面性能预测
• 软件
August 21-22, 2014 JSTI Workshop 6
Construction
Rutting
Fatigue Cracking
Low Temp Cracking [DTT]
[RV]
[DSR]
[BBR]
Pavement Age
No aging
August 21-22, 2014
RTFO - aging PAV - aging
JSTI Workshop 7
疲劳开裂 施工 车辙
低温开裂
[DTT] [RV] [DSR] [BBR]
路面寿命
未老化
August 21-22, 2014
RTFO 短期老化 PAV 长期老化
JSTI Workshop 8
4 Steps of Superpave Mix Design
1. Materials Selection
2. Design Aggregate Structure
TSR
August 21-22, 2014
3. Design Binder Content JSTI Workshop 4. Moisture Sensitivity
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
Lowest τmax
Wopt%
Workability Evaluation on Foamed Mixture at 1, 2, and 3% water
CI > CIHMA
Coatability Evaluation on Foamed Mixture at 1, 2, and 3% water
AASHTO T283间接拉伸 （IDT）
通过AASHTO/DOT 规范 等同或比热拌沥青混合 料性能更好
不没有通过 AASHTO/DOT 规范
等同或比热拌沥青混合 料性能更好 没有通过AAHTO/DOT 规范
AASHTO T324汉堡车辙 试验（HWTT）或TP79进 行重复蠕变试验
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
• Asphalt plant in Huntsville, Texas • Accushear foaming unit • Validation Steps
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
混合料设计规范验证
材料选择
在实验室用激光/摄像装 置测量在160℃、含水率 1%时发泡
是
满足发泡规范？
Superpave设计规范 AASHTO R35
否
修改沥青或添加/修 改发泡添加剂
August 21-22, 2014
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
混合料设计规范验证
• 德克萨斯州亨茨维尔沥青厂 • Accushear 发泡机 • 验证步骤
1. 访问胶结料工厂，进行胶结料发泡测试并收集松散混 合料样品（发泡含水量在5.5%） 2. 遵循泡沫沥青混合料设计规范来获取最佳发泡含水量 Wopt % 3. 再次访问胶结料工厂,调整含水率至 Wopt %, 进行胶结 料发泡测试并收集松散混合料样品（最佳发泡含水量）
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
Mixing Process
August 21-22, 2014
Leabharlann Baidu
JSTI Workshop
15
混合过程
August 21-22, 2014
JSTI Workshop
16
MIX DESIGN PROTOCOL VALIDATION
NCHRP 9-53
混合料设计规范验证
最低 τmax
Wopt%
含水量1%、2%。3% 的泡沫沥青混合料施 工和易性评价
CI > CIHMA
含水量1%、2%、3% 的泡沫沥青混合料集 料裹附性评价
最佳发泡含水量 （Wopt%）测定
最佳沥青含 量
最小 tmax @ 1.5% 含水量
August 21-22, 2014
Lowest τmax Wopt% CI > CIHMA
Workability Evaluation on Foamed Mixture at 1, 2, and 3% water
Coatability Evaluation on Foamed Mixture at 1, 2, and 3% water
1. Visit the plant to perform binder foaming tests and sample materials (water content during operation 5.5%) 2. Apply mix design protocol to obtain Wopt % 3. Revisit the plant , adjust the water content to Wopt %, perform binder foaming test, sample materials
MIX DESIGN WITH FOAMED ASPHALT
August 21-22, 2014
JSTI Workshop
1
泡沫沥青混合料的设计
August 21-22, 2014
JSTI Workshop
2
Superpave
August 21-22, 2014
JSTI Workshop
3
Superpave
CI @ 1.5% 含水量> CI 热拌沥青混合料
JSTI Workshop NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
Improved tmax at Wopt = 1.5% vs. 5.5% & HMA
August 21-22, 2014
JSTI Workshop
OPTIMUM WATER CONTENT (Wopt%) DETERMINATION
Optimum Binder Content
Min tmax @ 1.5% water content
August 21-22, 2014 JSTI Workshop
CI @ 1.5% water content > CI HMA
August 21-22, 2014
JSTI Workshop
4
• Asphalt Binder Specification
– binder test methods
Integrated System
Superpave
• Mixture Design
– component requirements – volumetric proportioning
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
混合料设计规范验证
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
MATERIALS SELECTION Laser/Camera Measurement on Laboratory Foaming at 160°C & 1% water Yes Meets foaming criteria? No SUPERPAVE MIX DESIGN AASHTO R35 Modify asphalt binder or add/modify foaming additive
NCHRP 9-53
混合料设计规范验证
改善的 tmax 在 Wopt = 1.5% 与5.5% & HMA
August 21-22, 2014
JSTI Workshop
NCHRP 9-53
MIX DESIGN PROTOCOL VALIDATION
Indirect Tensile (IDT) Strength per AASHTO T 283 Specimen Fabrication for HMA and Foamed WMA at Wopt% Resilient Modulus (MR) per ASTM D 7369 or Dynamic Modulus (E*) per AASHTO 342/TP79 Hamburg Wheel Tracking Test (HWTT) per AASHTO T 324 or Flow Number per TP79 Pass AASHTO/DOT Specification Equivalent or better performance than HMA Fail AASHTO/DOT Specification PERFORMANCE EVALUATION