... for the application of the information presented. 21 07 2003 19 07 2004 concrete compressive strength error experiment modeling precision stress-strain relationship testing variability References Ahmad , S. H. and Shah , S. P. , 1979 , “ Complete Stress-Strain Curve...

... of compressive strength, scaling, and freeze-thaw specimens. The maximum recorded temperatures ranged from 59 to 69°C, depending on the fresh concrete temperature. Control specimens from each of the four mixtures were cured at room temperature. Based on the amount of residue collected during scaling tests...

... of elasticity of thermally damaged concretes. KEYWORDS: compressive strength, concrete, dynamic elastic modulus, high temperatures, static elastic modulus, ultrasonic pulse velocity Introduction Portland cement concretes undergo important changes in their properties when they are exposed to high temperatures...

... that appropriate percentages of tire rubber are used in such mixtures. Achievements in this area are examined in this paper, with special focus on engineering properties of rubcrete mixtures. These include: workability, compressive strength, split-tensile strength, flexural strength, elastic modulus, Poisson's...

... compressive strength clays sarooj oman References Al-Rawas , A. A. , Hago , A. W. , Corcoran , T. C. , and Al-Ghafri , K. M. , 1998 , “ Properties of Omani Artificial Pozzolana (Sarooj) ,” Applied Clay Science   0169-1317 , Vol. 13 , pp. 275 – 292 . American Society...

... tests, chemical analysis, compressive strength ASTM C 1157, Standard Performance Specification for Hydraulic Cement, ASTM s first performance specification for hydraulic cements, was initially published in 1992. Originally, the specification covered only blended cements; a revision published in 1998 (C...

...SA Issa; MdS Islam; MA Issa; AA Yousif; MA Issa Test results obtained on the effect of specimen size and aggregate size on concrete compressive strength and modulus of elasticity are presented. The concrete was prepared using 4.75, 9.5, 19.0, 37.5, and 75-mm nominal maximum size aggregate. Over 600...

... to be somewhat lower than the expansion of ND concrete, provided they have the same binder and paste quality. The volume increase coincides with an extensive compressive strength reduction. The reported results confirm that addition of silica fume (5%) in combination with the investigated cements, seems...

... the workability of the fresh shotcrete, and this resulted in lower operating pressure for the shotcreting. The use of polypropylene fibers up to 0.5% by the volume of the shotcrete did not affect significantly the compressive strength, and the shotcrete incorporating both fly ash and silica fume bonded well...

... of elasticity and not to the cube strength of the capping material. KEYWORDS: cap thickness, capping materials, compressive strength, elastic modulus, high-strength concrete, modified cube strength, resonant frequency testing The increased use of high-strength concrete has led to a realization that more care...

...Y Li; BW Langan; MA Ward This paper describes the effect of silica fume on the strength and microstructure of high-strength paste. The particular tests carried out included: compressive strength, pore structure (mercury porosimetry), calcium hydroxide content, evaporable and non-evaporable water...

... in Concrete (ASTM C 618) Class F fly ash. Compressive strength, pulse velocity, porosity, and water permeability were determined after 28, 90, 180, and 360 days of water curing. Reinforced concrete specimens were used to assess the corrosion-resistance of plain and fly ash cement concretes in chloride...

...), and 69 MPa representing high-strength concrete (HSC). Fiber content ranges from 0 to 1.5% by volume of the concrete matrix. The influence of concrete strength on the compressive strength, splitting tensile strength, and modulus of rupture of steel fiber-reinforced concrete (FRC) is presented. Based...

... such as bleeding. Results show that the partial replacement of cement by silica fume increases the compressive strength of mortar but has no effect on the compressive strength of paste. Results also show that the partial replacement of portland cement by silica fume decreases the tensile strength of both paste...

...A Di Maio; G Giaccio; R Zerbino High-strength concrete is one of the new developments in concrete technology. In addition to compressive strength levels above 60 MPa, high workability, improvements in early age performance and durability appear to be its main advantages. This paper studies...

...KH Khayat; JA Bickley; RD Hooton The determinations of modulus of elasticity and flexural and splitting tensile strengths often involve complicated testing procedures compared to compressive strength testing. These properties can be estimated using existing relationships between them...

...S Kennedy; R Detwiler; J Bickley; M Thomas Although both ASTM and CSA have had standards for testing the compressive strength of concrete cylinders since the 1920s, neither standard contains a statement of the within- and between-laboratory precision of its test method as prescribed by Practice...

.... portland cement mineral admixtures cement compounds natural pozzolan fly ash granulated slag heat of hydration flexural strength compressive strength wave Viviana E Rahhal I and Oscar R. Batic 1 Mineral Admixtures Contribution to the Development of Heat of Hydration and Strength REFERENCE...

...RL Day Fourteen concretes were cast, with and without air entrainment and fly ash, using various sizes of cylindrical mold made from different materials. Cylinders were cured in the standard manner and tested for compressive strength, primarily at an age of 28 days. The range of strengths measured...

..., although they did slightly increase the time at which maximum compressive strengths were reached. Erratum to this paper appears in 17(1). Pascal Rougeron 1 and Pierre-Claude Ai'tcin' Optimization of the Composition of a High-Performance Concrete REFERENCE: Rougeron, P. and A'~tcin,P.-COptimizationof...