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American Association of State and Highway Transportation Officials, 2022
Publisher: AASHTO
File Format: PDF
$43.00$86.00
Pages:9
File Size:1 file , 530 KB
Note:This product is unavailable in Ukraine, Russia, Belarus
This method covers the measurement of the oxidation signal in an asphalt mixture by a portable infrared spectrometer (PIRS) equipped with a diffuse reflectance accessory. Three oxidation signals are compared: (1) the in-place pavement, (2) asphalt mixture production sample, and (3) the approved job mixture formula specimen. The oxidation signals are determined from a specified peak value from the absorbance spectrum of the asphalt samples.
The in-place pavement PIRS oxidation signal can be used to assess its aging rate. The pavement aging rate is determined by comparing its initial PIRS oxidation signal with successive PIRS oxidation signals obtained at some defined frequency.
Standard Method of Test for Air Content of Freshly Mixed Concrete by the Pressure Method (ASTM C231/C231M-14)
$30.00 $61.00
Standard Method of Test for Length Change of Hardened Hydraulic Cement Mortar and Concrete (ASTM Designation: C157/C157M-14)
Standard Method of Test for Measuring Early-Age Compression Strength and Projecting Later-Age Strength (ASTM Designation: C918-13)
Standard Recommended Practice for Selection and Use of Emulsified Asphalts (ASTM D 3628-08)
$148.00 $297.25
