Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Donath Mrawira"'
Autor:
Luis Amador Jiménez, Donath Mrawira
Publikováno v:
Infraestructura Vial, Vol 14, Iss 25 (2012)
Traditional pavement deterioration modeling is normally based on historical condition data alone without incorporating the fundamental relationships between the causal factors and the response. Also, typical approaches do not quantify the uncertainty
Externí odkaz:
https://doaj.org/article/460d91960111455990c06a6a4327c502
Autor:
Luis Amador-Jimenez, Donath Mrawira
Publikováno v:
International Journal of Pavement Engineering. 12:177-186
This paper presents an approach for incorporating reliability on initial performance prediction models developed from as little as two time series predictors. It employs a novel methodology to provide apparent ages as surrogate of condition and, in a
Autor:
Donath Mrawira, Ashfaq Khan
Publikováno v:
Journal of Materials in Civil Engineering. 22:171-178
Frost related damage in pavements is a major concern for highway engineers in cold regions. The existing methods for mitigating frost damage in flexible pavements are expensive; they require greater construction control and are not fully effective. T
Publikováno v:
Journal of Transportation Engineering. 135:999-1007
Initial implementation of a road management system will typically face the challenge of a lack of time-series data for performance modeling. This paper presents one approach for developing initial performance prediction models that are required to su
Publikováno v:
International Journal of Pavement Engineering. 10:329-339
This paper investigates the use of lightweight aggregate (LWA) in hot mix asphalt and aggregate base and subbase layers as a strategy of reducing frost damage in pavements. The paper compares thermal conductivity, thermal diffusivity and specific hea
Publikováno v:
Journal of Construction Engineering and Management. 135:801-811
Construction specifications are used by transportation agencies to define the client's requirements of the final product. The primary motivation of adopting the newer end result specification (ERS) or performance related specification over method-bas
Autor:
Fabián Elizondo, Donath Mrawira
Publikováno v:
Road Materials and Pavement Design. 9:115-134
This paper presents an investigation of the dynamic modulus, fatigue properties, and static creep of ten different Superpave mixes used in Costa Rica. The mechanistic properties were compared with empirical properties and also with equivalent Marshal
Autor:
Donath Mrawira, Joseph Luca
Publikováno v:
Canadian Journal of Civil Engineering. 33:1410-1417
This paper investigates the effects of mix design factors on the thermal properties of Superpave asphalt concrete. The thermal properties were measured using a guarded testing device (k-alpha device) developed recently at the University of New Brunsw
Autor:
Donath Mrawira, Joseph Luca
Publikováno v:
Journal of Materials in Civil Engineering. 17:72-79
Reliable implementation of transient temperature prediction models for asphalt pavements has been impeded by lack of reliable thermo–physical properties data. The existing methodology based on ASTM C177-85 is not conducive to asphalt concrete speci
Autor:
Charles Nunoo, Donath Mrawira
Publikováno v:
Journal of Computing in Civil Engineering. 18:257-266
Practical optimization of infrastructure preservation works programming has always posed a computational challenge due to the complexity and scale of the problem. Critical to the process is formulations in which the identity of individual projects is