A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Structural Applications of High Strength Concrete
Parametric studies were conducted to determine the structural efficiency and cost effectiveness of using high strength concrete for highway bridge construction. Included in the investigation were prestressed concrete hollow core slabs, prestressed concrete girders, and reinforced concrete piers. The current AASHTO design procedures for flexural and compression members were used for high strength concrete except that the modulus of elasticity and the rupture modulus of the concrete were computed according to the recommendations of ACI Committee 363. High strength concrete appeared to be economically feasible and practical, especially for the purposes of increasing the span range of the current hollow core slab bridges. A concrete strength of 8,000 psi was most advantageous. The standard AASHTO and PCI girder sections showed a 30 percent increase in their maximum spans when the concrete strength was increased from 6,000 to 12,000 psi. For the box beams, as much as 20 percent increase was obtained. In general, a concrete strength of 10,000 psi appeared to be most desirable for these girder and beam sections. The study of the pier sections indicated clearly the economic benefits of high strength concrete.
Structural Applications of High Strength Concrete
Parametric studies were conducted to determine the structural efficiency and cost effectiveness of using high strength concrete for highway bridge construction. Included in the investigation were prestressed concrete hollow core slabs, prestressed concrete girders, and reinforced concrete piers. The current AASHTO design procedures for flexural and compression members were used for high strength concrete except that the modulus of elasticity and the rupture modulus of the concrete were computed according to the recommendations of ACI Committee 363. High strength concrete appeared to be economically feasible and practical, especially for the purposes of increasing the span range of the current hollow core slab bridges. A concrete strength of 8,000 psi was most advantageous. The standard AASHTO and PCI girder sections showed a 30 percent increase in their maximum spans when the concrete strength was increased from 6,000 to 12,000 psi. For the box beams, as much as 20 percent increase was obtained. In general, a concrete strength of 10,000 psi appeared to be most desirable for these girder and beam sections. The study of the pier sections indicated clearly the economic benefits of high strength concrete.
Structural Applications of High Strength Concrete
P. Zia (author) / J. J. Schemmel (author) / T. E. Tallman (author)
1989
334 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , High strength concretes , Highway bridges , Structural members , Design criteria , Cost effectiveness , Bridge piers , Concrete construction , Concrete slabs , Beams(Supports) , Loads(Forces) , Ultimate strength , Mechanical properties , Prestressed concrete , Reinforced concrete
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