TRB’s Transportation Research Record (TRR): Journal of the Transportation Research Board, No. 2444 consists of 17 papers that examine a laboratory mix design procedure for foamed bitumen mixtures; a vacuum sealing–based volumetric density measurement approach for cold in-place recycling; impact of freeze–thaw cycles on mechanical properties of asphalt mixes; an investigation of tack coat failure in orthotropic steel bridge deck overlay; high-temperature characterization of highly modified asphalt binders and mixtures; and, a rheological and microstructural assessment of rejuvenated bitumen.

This issue also explores a testing protocol for evaluation of binder-reclaimed aggregate bond strength; an application of diffusion; characteristics of virgin and recycled asphalt shingle binder blends; emulsified asphalt residue recovery and characterization; and a quantification of water in asphalt.

This TRR also explores the effect of waste engine oil residue on quality and durability of SHRP Materials Reference Library binders; aging properties of crumb rubber and styrene–butadiene–styrene modified binders; sensitivity of nozzle-based foamed asphalt binder characteristics to foaming parameters; effects of interaction conditions on internal network structure of crumb rubber–modified asphalts; thermal properties of thermochromic asphalt binders by modulated differential scanning calorimetry; and development and preliminary validation of integrated local microclimate model for numerical evaluation of cool pavement strategies.