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Core Strengths of High-Strength Concrete
"SP-172: High-Performance Concrete - Proceedings: ACI International Conference, Malaysia 1997", 1999The effects of varying L/D ratios and core size on the strength of cores from large elements of high strength concrete (HSC) made both in the laboratory and field were examined. 154 cores representing 5 laboratory mixtures having moist-cured cylinder compressive strengths from 114 to 142 MPa at 5-years age and 101 cores representing actual field ...
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Comparison between high strength concrete and normal strength concrete subjected to high temperature
Materials and Structures, 1996Two normal strength concretes and three high strength concretes, with 28-day compressive strengths of 28, 47, 76, 79 and 94 MPa respectively, were used to compare the effect of high temperatures on high strength concrete and normal strength concrete.
Sammy Y. N. Chan +2 more
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High Strength Concrete in the Precast Concrete Industry
PCI Journal, 1993The precast concrete industry has, since its inception, been a recognized leader in the development and use of high strength concrete. Yet in recent years, whereas concrete strength in building applications has increased from 6000-8000 psi to 12,000-16,000 psi, there has not been a corresponding trend in the strength of precast concrete. As part of its
Charles W. Dolan, Robert W. LaFraugh
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Fracture analysis of a high-strength concrete and a high-strength steel-fiber-reinforced concrete
Mechanics of Composite Materials, 2007This paper addresses the use of R-curves to study the fracture behavior of high-strength concrete and steel-fiber-reinforced concrete subjected to crack ing in a three-point bending configuration. The R-curves are modeled through an effective approach based on the equations of linear-elastic fracture mechanics (LEFM), which relates the applied load to ...
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PCI Journal, 1967
A COMMISSION WAS ESTABLISHED ON METHODS OF ACHIEVING HIGH- STRENGTH CONCRETE TO FIND OUT WHETHER THE EFFECTIVE COMPRESSIVE STRENGTH OF CONCRETE CAN BE SUBSTANTIALLY INCREASED SO THAT PRESTRESSED CONCRETE MAY BECOME NOT MERELY AN ECONOMIC STRUCTURAL MATERIAL OF ATTRACTIVE CHARACTERISTICS, BUT A MATERIAL OF HIGH SPECIFIC STRENGTH AS WELL.
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A COMMISSION WAS ESTABLISHED ON METHODS OF ACHIEVING HIGH- STRENGTH CONCRETE TO FIND OUT WHETHER THE EFFECTIVE COMPRESSIVE STRENGTH OF CONCRETE CAN BE SUBSTANTIALLY INCREASED SO THAT PRESTRESSED CONCRETE MAY BECOME NOT MERELY AN ECONOMIC STRUCTURAL MATERIAL OF ATTRACTIVE CHARACTERISTICS, BUT A MATERIAL OF HIGH SPECIFIC STRENGTH AS WELL.
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Modelling of Creep in High Strength Concrete
Creep is the time dependent deformation of concrete induced by sustained stress. Several different prediction models are currently used throughout the world, however little is known about their ability to predict creep in high strength concretes. Several of these models were designed to be used on normal strength concretes.openaire +4 more sources
Carbonation of High Strength Concrete
Applied Mechanics and Materials, 2011High strength concrete consisting of binary and ternary blended cementitious systems based on ordinary Portland cement, pulverised fuel ash and silica fume were investigated for carbonation. PFA up to 40% was used and to these blends 0, 5, 10, and 15% SF was incorporated as partial cement replacement.
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Properties of High-Strength Concrete
Cement, Concrete, and Aggregates, 1986Abstract This paper presents data related to the development of high-strength concrete with special emphasis on the development of high early strength. Both these objectives were achieved by using an ultrafine portland cement with a specific surface of about 750 m2/kg or a high early strength portland cement with about 75% tricalcium ...
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High strength concrete for prestressed concrete girders
1991This paper illustrates that the use of high strength concrete allows increasing the span of prestressed girders with given cross section. It is also indicated that for a given span length, girder spacing can be significantly increased. These benefits are demonstrated by means of numerical examples, which give formulae to calculate the maximum span ...
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