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EFFECT OF REBAR ON COMPRESSIVE STRENGTH OF …

quality control of concrete of these beams. Compressive strength of cores was astonishing because there was enough confidence in strength of placed concrete, but strength of cores was too low. Accordingly, it was necessary to study rebar effects on core strength.

THE EFFECT OF CURING CONDITION ON COMPRESSIVE …

while mix No4. shows an increase of 4 and 10% in compressive strength at 7 and 28 days where there is a reduction in the strength at 90 days by about 2%. Generally, as the size of specimen decreases, the effect of temperature curing (g roup C)on the compressive strength increases. Keywords: curing ,compressive strength, concrete ,high strength. 1.

The Effect of Steel Fibers on the Compressive Strength of ...

The effect of steel fibers on the static compression strength of concrete and mortar was studied. . .Values for Young's modulus and Poisson's ratio for the vari

EFFECT OF CORE GEOMETRY AND SIZE ON CONCRETE …

EFFECT OF CORE GEOMETRY AND SIZE ON CONCRETE COMPRESSIVE STRENGTH Submitted to The Alabama Department of Transportation Prepared by Adam C. Carroll, R. Grubbs, Anton K. Schindler, and Robert W. Barnes JULY 2016

The Effect of Test Cylinder Size on Concrete Strength

The Effect of Test Cylinder Size on the Compressive Strength of Sulfur Capped Concrete Specimens ... The factors that were studied to evaluate the effect of cylinder size on concrete compressive strength were aggregate size, technician, compressive strength, and age of specimen at testing. ... Factors that Affect the Compressive Strength of ...

Effect of aggregate type on Compressive strength of concrete

Effect of aggregate type on Compressive strength of concrete Abdullahi. M International Journal of Civil and Structural Engineering Volume 2 Issue 3 2012 794 (Olanipekun, Olusola, and Ata 2006; Neville, 1995). This further buttresses the point that the aggregates can be used for construction work.

Shape and size effects on the compressive strength of high ...

Shape and size effects on the compressive strength of highstrength concrete. Author links open overlay panel ... In this paper we investigate the influence of the shape and of the size of the specimens on the compressive strength of highstrength concrete. ... This size effect on the compressive strength manifests that the specimen is not ...

EFFECT OF CURING METHODS ON THE COMPRESSIVE …

EFFECT OF CURING METHODS ON THE COMPRESSIVE STRENGTH OF CONCRETE T. James, A. Malachi, Gadzama, V. Anametem oka Department of Civil Engineering, Federal University of Technology Yola, Nigeria.

Effect of Concrete Strength and Slab Thickness on Floor ...

The specification for the floor of a maintenance building called for a 6inch slab thickness and concrete with a design compressive strength of 3000 psi. The actual average cylinder strength for the floor concrete was 3630 psi. Four months after the floor was placed, 10 cores were drilled, measured, and tested in compression.

Effect of Curing Methods on Density and Compressive ...

This study considered the effect of different methods of curing on density and compressive strength of concrete. Concrete cube specimens of mix 1:2:4 were prepared with watercement ratio of The cubes were cured using six methods (air curing, watersubmerged curing, spray curing, polythene curing, moist sand curing and

EFFECT OF CRUDE OIL CONTAMINATION ON THE …

EFFECT OF CRUDE OIL CONTAMINATION ON THE COMPRESSIVE STRENGTH OF CONCRETE S. O. Osuji E. Nwankwo Nigerian Journal of Technology, Vol. 34, No. 2, April 2015 260 drink and use for all their requirements. In April 1997, samples taken from water used for drinking and

Effect of moisture content and porosity on compressive ...

The effect of drying on the compressive strength of concrete is assumed to come from two competitive effects , , , . The first is capillary pressure (suction), which increases as saturation decreases. This pressure acts in the material as isotropic prestressing and leads to a stiffening effect , .

EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON …

The effects of aggregate type, size, and content on the behavior of normal and highstrength concrete, and the relationships between compressive strength, flexural strength, and fracture energy are discussed. The concrete mixtures incorporate either basalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and

Effect of Aggregate Content on the Concrete Compressive ...

Effect of Aggregate Content on the Concrete Compressive Strength Ultrasonic Pulse Velocity Relationship. American Journal of Civil Engineering and Architecture , 4 (1), 15. AlNu’man, Bayan S., Bestoon R. Aziz, Sabr A. Abdulla, and Sirwan E. Khaleel.

Factors Affecting Strength of Concrete The Constructor

Compressive Strength of Concrete Cube Test, Procedure, Results. Testing of Concrete Cores for Strength – Sampling and Procedure. NonDestructive Testing of Concrete and its Methods. Effect of Air Entrained Concrete on Strength of Concrete. Factors Affecting Rheological Properties of Fresh Concrete

Effect of Air Entrained Concrete on Strength of Concrete

2. Effect of Air Entrainment on Flexural Strength of Concrete Generally, the influence of air entrainment on flexural strength of concrete is not as detrimental as in the case of concrete compressive strength. It is reported that, maximum flexural strength can be achieved even with air contant of 4%.

Effect of aggregate type on Compressive strength of concrete

The corresponding values for gravel concrete are N/mm 2 , N/mm 2 and N/mm 2 .To achieve a high compressive strength, density and workability of concrete mix, machine mixing ...

The Effect of Sea Water on Compressive Strength of …

The Effect of Sea Water on Compressive Strength of Concrete Olutoge, F. Adeyemi1 and Amusan, G. Modupeola2 ... The effect of sea water on concrete was first discussed in 1840 by J. Smeaton and L. J. Vicat. Their twoyear ... water on the compressive strength of concrete with a view of producing durable marine concrete structures.

Effect of Air Entrainment on Compressive Strength, Density ...

effect of air entrainment on compressive strength, density and ingredients of fresh concrete mix. During all the study, water cement ratio (w/c) was maintained constant at to study the affection of air entrainment (a %) on concrete mix. The results have shown substantial decreasing in cement, water,

Effect of Cube Size on the Compressive Strength of Concrete

Effect of Cube Size on the Compressive Strength of Concrete 1Misba Gul, 1Assistant Professor 1Department of Civil Engineering 1Islamic University of Science Technology, Awantipora, India. _____ Abstract In this paper the influence of the size of the cube specimens on the compressive strength of concrete has been investigated.

CIP 35 Testing Compressive Strength of Concrete

The compressive strength of concrete is the most common performance measure used by the engineer in designing buildings and other structures. The compressive strength is measured by breaking cylindrical concrete specimens in a compressiontesting machine.

Size and Shape Effects on the Compressive Strength of High ...

Size and Shape Effects on the Compressive Strength of High Strength Concrete del Viso, Carmona G. Ruiz, ... In this paper we investigate the influence of the shape and of the size of the specimens on the compressive strength of high strength concrete. ... This size effect on the compressive strength manifests that the specimen is ...

Technical ReportTHE 2Jly16 I

The effect of sea water on compressive strength of concrete aiso resulted in some rather unusual curves of strength versus salinity of mixing water. 1 Conse quently, these tests were repeated with the same brand and type of cement except

The effect of temperature on the compressive strength of ...

Concrete specimens loaded to produce normal design compressive stress during the period of heating showed less reduction in strength than specimens without imposed load. There was afurther loss in the compressive strength of the specimens when cooled after heating to a given temperature.

Effect of High Temperature on Compressive Strength of …

concrete at elevated temperatures. Along with the compressive strength, change in appearance colour was also noted down. A careful study of these tables graphs would reveal that, up to 350°C, the fall in compressive strength was negligible at less than 10%. At 500°C, the values of cube compressive strength became conscious

Effect Of Different Curing Methods On The Compressive ...

The study present the effect of different curing methods on the compressive strength of concrete using Portland cement and finally identifies the most effective curing process for normal concrete. MATERIALS AND METHODS Locally available crushed granite stones and fine aggregate (quartzite sand)were used as coarse and fine aggregate respectively.

Effects of Sand Quality on Compressive Strength of ...

Effects of Sand Quality on Compressive Strength of Concrete: A Case of Nairobi County and Its Environs, Kenya Hannah Nyambara Ngugi1, Raphael Ndisya Mutuku2, Zachary Abiero Gariy2 ... purities present in building sand and its effect on compressive strength of concrete. This paper

Effect of moisture content on compressive and split ...

that the moisture content in concrete does have a significant effect on the compressive strength of concrete, but has a much lesser effect on the split tensile strength. As the specimen degrees of saturation increased, the compressive strength fell. However, at nearly saturated condition, an increase in compressive strength can be found.

Effect of Rate of Loading on Compressive Strength of …

False strength of concrete proves fatal as it may fail due to various factors in the long terms. Therefore, to ensure the functional performance and safety of structure it is necessary to determine the true strength of concrete. In this project the effect of high rate of loading on compressive strength of concrete has been studied. As it has

(PDF) Stone Dust in Concrete: Effect on Compressive Strength

Stone Dust in Concrete: Effect on Compressive Strength . ... The compressive strength of concrete from stone powder shows % higher value than that of the concrete made of normal sand. On the ...

Hardened Concrete Strength The Concrete Portal

Compressive strength of concrete generally increases with a decreasing l/d (for ratios below 2). The effect of increasing l/d beyond 2 does not produce significant changes in the strength. However, at large l/d, eccentricity of loading might be a factor to reckon with.

Effect of Different Types of Water on Compressive Strength ...

ABSTRACT: The study centered on the effect of different qualities of water on concrete compressive strength. The concrete mix of M20 grade with water cement ratio of were investigated. Water samples, such as tap water, waste water, well water, bore …

Role of Concrete Curing

Effect of curing duration on compressive strength development is presented in Figure 1. Figure 1. Moist Curing Time and Compressive Strength Gain. Higher curing temperatures promote an early strength gain in concrete but may decrease its 28day strength. Effect of curing temperature on compressive strength development is presented in Figure 2 ...

Effect of Calcium Chloride on the Compressive Strength of ...

This has necessitated the need to check the effect admixtures have on some properties of concrete. This study investigated the effect of calcium chloride (CaCl2) as an admixture on the compressive strength of concrete produced from Dangote, Elephant …