Accession Number : ADA610768


Title :   Laboratory Evaluation of Expedient Low-Temperature Admixtures for Runway Craters in Cold Weather


Descriptive Note : Final rept.


Corporate Author : ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB


Personal Author(s) : Oren, Jared I ; Moser, Robert D ; Boddu, Veera ; Weiss, Jr , Charles A ; Clausen, Jay


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a610768.pdf


Report Date : Oct 2014


Pagination or Media Count : 121


Abstract : The research included in this report investigates admixtures that can improve the low-temperature early strength gain performance of two products already in existence (which are currently in limited use by the Air Force) for hasty runway repair. The first product, a flowable fill, is a low-level cementitious sandy mixture used to rapidly fill the bulk of a runway crater; the second product, a rapid setting concrete, seals the final 10 12 in. of the crater and allows heavy-vehicle trafficability. The primary operational requirements, which the current two-part solution meet at higher temperatures (greater than 10 deg C) but which require improvements at lower temperatures (-10 to 10 deg C), involve time of set and 2 hr unconfined compressive strength (UCS). This research ignores typical concerns, such as long-term durability, aesthetics, and corrosion, that are of minimal importance in this expedient field-use application horizontal surface repairs not expected to last more than two to five years. Results from this study are expected to be incorporated into operational testing, using Air Force equipment, personnel, and techniques, for small and large crater repair at sub-freezing temperatures. This report describes laboratory tests to improve the early strength gain performance of both repair materials to repair small-to-large craters at ambient temperatures of -10 to 10 deg C.


Descriptors :   *CRATERS , *LOW TEMPERATURE , *TEST AND EVALUATION , AIR FORCE , AIR FORCE EQUIPMENT , CEMENTS , COMPRESSIVE STRENGTH , HIGH TEMPERATURE , LABORATORY TESTS , MATERIALS , OPERATIONAL EFFECTIVENESS , PERSONNEL , REPAIR , REPORTS , REQUIREMENTS , RUNWAYS , SETTING(ADJUSTING) , STRENGTH(GENERAL) , SURFACES , TEMPERATURE


Subject Categories : Geography


Distribution Statement : APPROVED FOR PUBLIC RELEASE