The Analytical Hierarchy Process (AHP) was used to characterize the bridge material selection decisions of highway officials across the United States. Understanding product choices by utilizing the AHP allowed us to develop strategies for increasing the use of timber in bridge construction. State Department of Transportation engineers, private consulting engineers, and local highway officials w...

The study object is a prototype of composite bridge prestressed concrete beam with length 42.0 m for road desks perception impact from motor vehicles in the form A14, NK-120 and NK-180 loads.

This paper reported the very earliest experimental and analytical studies on bonded Prestressed CFRP tendon enhanced Steel Reinforced Concrete (PSRC) members under eccentric tensile loads . Eight PSRC were tested monotonic loading, three (SRC) simultaneously for comparison. The load–deflection relationship, strain distributions as well crack propagation fracture of concrete investigated experim...

This paper discusses the long-term behavior of a series of highly-loaded, spun concrete pole specimens prestressed with carbon fiber-reinforced polymer (CFRP) tendons, which were subjected to outdoor four-point bending creep tests since 1996 in the frame of collaboration with the Swiss precast concrete producer, SACAC (Società Anonima Cementi Armati Centrifugati). The 2 m span cylindrical beams...

Abstract. This article discusses a real-time acoustic monitoring technique newly used for ground anchors and the analysis of the anchor failure via data interpretation. For assessment of this method, in-situ pullout load tests were conducted on two prestressed anchors. An one-dimensional analytical model was established to model the anchor’s behaviors. With the use of attenuation law for the wa...

The evaluation of the safety level in concrete structures should be done considering the stochastic behavior of main involved parameters not only in ultimate conditions but also in serviceability and durability ones. In fact, particularly in concrete structures, the large variability of fundamental mechanical parameters, may give rise to important deviations from the behavior expected if a dete...

Four different limit states formats for the fatigue design of reinforced concrete and prestressed concrete structures are described and compared within the context of simple second level reliability theory. All four formats lend themselves to reliability treatment but the cycle format appears to be the most useful at the present time, given the limited quantity of design data available on the f...

With the extensive use of self-consolidating concrete (SCC) worldwide, it is important to ensure that such concrete can secure uniform in-situ mechanical properties that are similar to those obtained with properly consolidated concrete of conventional fluidity. Ensuring proper stability of SCC is essential to enhance the uniformity of in-situ mechanical properties, including bond to embedded re...