Adel R. Zaki and Bernard Breault, SNC-Lavalin Inc. The reconstruction of the Jacques Cartier Bridge in Montreal, Canada, involved more than 645,800 sq ft (60,000 sq m) of bridge deck and made extensive use of precast, prestressed, high performance concrete
HPC IN ALASKA
Elmer E. Marx, Alaska Department of Transportation & Public Facilities Since the early 1970s, the Alaska Department of Transportation & Public Facilities has been building adjacent, precast, prestressed concrete deck bulb-tee girder bridges using high strength concrete (HSC). Most of
Question and Answer
Question: Does the use of high strength concrete reduce prestress losses in pretensioned bridge beams? Answer: Experimental evidence shows that higher strength concrete has a higher modulus of elasticity and a lower creep coefficient than conventional strength concrete. The ultimate
SELF-CONSOLIDATING CONCRETE IN MAINE
Joseph L. Hartmann, Federal Highway Administration and Denis Dubois, Maine Department of Transportation Over the last decade, the Maine Department of Transportation (MDOT) has been an aggressive pursuer of emerging and advanced concrete technologies. MDOT has incorporated the use of
MAXIMUM EFFECTIVE CONCRETE STRENGTHS IN PRETENSIONED BEAMS
Henry G. Russell, Henry G. Russell, Inc. The use of high strength concrete in precast, prestressed concrete beams allows for a higher precompression to be applied to the beams. Consequently, the tensile stress in the bottom flange calculated from the
Read More >>MAXIMUM EFFECTIVE CONCRETE STRENGTHS IN PRETENSIONED BEAMS