Effect Of Compressive Strength In Concrete

Effects of Superplasticizing Admixture on Properties of ...

the compressive strength of concrete. addition of superplasticizer not able to increase the compressive strength of concrete, on the other hand, it reduces the strenght significantly, and become worse when the dosages increase. The superplasticizer (SP), increase in dosage will increase the compressive strength.

Effect of Cylinder Size on the Modulus of Elasticity and ...

The primary objective of this study is to investigate the effects of cylinder size (150 by 300 mm and 100 by 200 mm) on empirical equations that relate static elastic moduli and compressive strength and static and dynamic elastic moduli of concrete. For the purposes, two sets of one hundred and twenty concrete cylinders, 150 by 300 mm and 100 by 200 mm, were prepared from three ...

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 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.

Role of Concrete Curing - cement.org

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 28-day strength. Effect of curing temperature on compressive strength development is presented in Figure 2 ...

Effect of nano silica on the compressive strength of concrete

strength of the concrete. This study is an attempt to explain the impact of a nano-silica on the compressive strength of concrete by explaining its microstructure. 1.3 OBJECTIVE OF THE STUDY The main objectives of the present study are as mentioned below: To study the effect of nano-silica on the compressive strength of concrete.

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.

What is the effect of honeycomb on compressive strength of ...

What is the effect of honeycomb on compressive strength of concrete? ... At 13 weeks, the high strength concrete has a compressive strength (166 N/mm 2 ), which is 4.4 times higher than that of ...

The Effect of Sea Water on Compressive Strength of …

Testing Compressive Strength : The compressive strength test was performed on the concrete cubes, tested at the curing age of 7, 14, 21, 28 and 90days using the compression testing machine. The cube was placed between the compressive plates parallel to the surface and then compressed at uniform rate (without shock) until failure occurred.

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

The specification for the floor of a maintenance building called for a 6-inch 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 Straining Rate on the Compressive Strength and ...

The effect of the rate of application of load was investigated using bonded wire strain gages in compressive tests of two concretes having approximate compressive strengths of 2500 and 6500 psi. The concrete was tested in the form of 3 x 6-in. cylinders at rates of straining ranging from 10-^6 to about 10 in. per in. per set, with the ...

EFFECT OF CORE GEOMETRY AND SIZE ON CONCRETE …

To evaluate the in-place concrete strength for acceptance for a structural member with potentially substandard strength, the compressive strength of cores may be required for assessment. Depending on the geometry and size of the core specimen, the compressive test results may need adjustment to characterize the in-place concrete strength.

EFFECT OF REBAR ON COMPRESSIVE STRENGTH OF …

966 / Effect of Rebar on Compressive Strength …. Cores and Sawed Beams of Concrete” (ASTM C 42) shall be permitted [1,3,4]. If by structural analysis, again it …

Effect of Temperature on Strength of Concrete ...

A. Concrete Compressive Strength According to the different used temperatures the values of compressive strength are obtained of specimens confined with different shapes of CFRP and unconfined specimens. The values of compressive strength are …

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 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

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.

The Effect of Maximum Coarse Aggregate Size on the ...

concrete and established that aggregate type has effect on the compressive strength of normal concrete, and that concrete made from crushed quartzite would give the highest compressive strength at all ages but concrete made with granite as coarse aggregate would give the least strength. On the contrary, Aginam et al. (2013) found that

Effects of Cold Weather Construction on the Compressive ...

The effect of cold weather on the strength of plain concrete block masonry walls was studied in a program of tests on 49 specimens. Exposure to cold weather began at various times after construction. Following exposure the walls were cured in a normal laboratory environment under varying moisture conditions and then tested.

Effect of aggregate type on Compressive strength of concrete

Effect of aggregate type on Compressive strength of concrete Article (PDF Available) in International Journal for Computational Civil and Structural Engineering 2(3) · February 2012 with 5,717 Reads

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.

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 CURING METHODS ON THE COMPRESSIVE …

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

Compressive Strength of Concrete | Cube Test, Procedure ...

Concrete being the major consumable material after water makes it quite inquisitive in its nature. The strength of concrete is majorly derived from aggregates, where-as cement and sand contribute binding and workability along with flowability to concrete.. This is an in-depth article on Compressive Strength of Concrete.

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 water-cement ratio of 0.65. The cubes were cured using six methods (air curing, water-submerged curing, spray curing, polythene curing, moist sand curing and

Effect of superplasticizer on the Compressive strength of ...

The effect of superplasticizer (Polycarboxylic Ether) on the compressive strength of concrete using different water cement ratio was studied. The superplasticizer was used as an admixture. The superplasticizer was added to the concrete at 0%, 2%, 2.5% and 3.5% by weight of cement and varying water cement ratio of 0.4, 0.45, 0.50 and 0.55.

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

the size and shape effect on compressive tests per-formed on High-Strength Concrete (HSC) specimens. Specifically, we wanted to disclose the influence of the size in cubes and the relationship between com-pressive strength obtained from standard cylinders, ASTM C39 (100 £200mm) and the strength got from cubes.

Effects of Silica Fume on Concrete Compressive Strength

The effects of silica fume (SF) on compressive strength of concrete have been analyzed. The compressive strength results of concrete mixed over different water–binder ratios as well as different replacing percentages of SF were analyzed. The results of the experiments showed that when the polymer/binder materials ratio increases, the compressive strength of concrete decreases.

Compressive strength - Wikipedia

Compressive Strength of Concrete. For designers, compressive strength is one of the most important engineering properties of concrete. It is a standard industrial practice that the concrete is classified based on grades. This grade is nothing but the Compressive Strength of the concrete cube or cylinder.

Effects of Water-Cement Ratios on the Compressive …

and the compressive strengths of both concrete and lateritic concrete mixes were found to increase with age but decrease as the water-cement ratio increases. However, water-cement ratio above 0.65 was observed to have a very significant reduction effect on the compressive strength of the lateritic concrete …