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From page 17... ... 17 Conclusions and Recommendations Economic, environmental, and engineering benefits motivate the reduction of production and placement temperatures for asphalt mixtures. The latest technology that has been rapidly adopted for this purpose is WMA. Read the entire page →
From page 18... ... 18 in mixture properties for all moisture conditioned specimens as compared to the dry control specimens. According to the MR stiffness and IDT strength results, the 2,000-cycle MIST protocol produced the most severe moisture damage, while no significant difference was observed for other protocols. Read the entire page →
From page 19... ... Note a: if WMA LMLC is not available, use trial batch prior to production for verification: on-site PMLC or off-site PMLC with minimal reheating Note b: select a single moisture conditioning protocol and use it throughout the mix design verification Note c: select a single test method and use it throughout the mix design verification Note d: If trial batch off-site PMLC specimens are used, employ the following thresholds (TSR and MR-ratio remain unchanged) : Wet IDT ≥ 100 psi, Wet MR ≥ 300 ksi, SIP ≥ 6,000 cycles, stripping slope ≤ 2.0 µm/cycle HWTT per AASHTO T 324 IDT Strength per AASHTO T 283 MR per modified ASTM D7369 ≥ 65 psi & ≥ 70% ≥ 200 ksi & ≥ 70% OK OK No No No OK LMLC Loose Mix STOA 2 h @ 240°F (116°C) Read the entire page →
From page 20... ... 20 selected test, moisture susceptibility in early life is probable and scheduling construction is recommended so that a summer of aging occurs prior to multiple freeze-thaw cycles or wet and cold days. Otherwise, the mixture is considered moisture susceptible. Read the entire page →

From page 17...

... 17 Conclusions and Recommendations Economic, environmental, and engineering benefits motivate the reduction of production and placement temperatures for asphalt mixtures. The latest technology that has been rapidly adopted for this purpose is WMA.

Read the entire page →

From page 18...

... 18 in mixture properties for all moisture conditioned specimens as compared to the dry control specimens. According to the MR stiffness and IDT strength results, the 2,000-cycle MIST protocol produced the most severe moisture damage, while no significant difference was observed for other protocols.

Read the entire page →

From page 19...

... Note a: if WMA LMLC is not available, use trial batch prior to production for verification: on-site PMLC or off-site PMLC with minimal reheating Note b: select a single moisture conditioning protocol and use it throughout the mix design verification Note c: select a single test method and use it throughout the mix design verification Note d: If trial batch off-site PMLC specimens are used, employ the following thresholds (TSR and MR-ratio remain unchanged) : Wet IDT ≥ 100 psi, Wet MR ≥ 300 ksi, SIP ≥ 6,000 cycles, stripping slope ≤ 2.0 µm/cycle HWTT per AASHTO T 324 IDT Strength per AASHTO T 283 MR per modified ASTM D7369 ≥ 65 psi & ≥ 70% ≥ 200 ksi & ≥ 70% OK OK No No No OK LMLC Loose Mix STOA 2 h @ 240°F (116°C)

Read the entire page →

From page 20...

... 20 selected test, moisture susceptibility in early life is probable and scheduling construction is recommended so that a summer of aging occurs prior to multiple freeze-thaw cycles or wet and cold days. Otherwise, the mixture is considered moisture susceptible.

Read the entire page →

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