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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 andGet price

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Effects of Sand Quality on Compressive Strength of

plied in Nairobi County and its environs as well as their effect to the compressive strength of con-crete was lacking The objective of this research was to establish level of silt clay and organic im-purities present in building sand and its effect on compressive strength of concrete This paperGet price

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Compressive strength

The compressive strength of concrete is given in terms of the characteristic compressive strength of 150 mm size cubes tested after 28 days (fck) In field compressive strength tests are also conducted at interim duration i e after 7 days to verify the anticipated compressive strength expected after 28 days Get price

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Strength development in concrete

Concrete strength Many factors influence the rate at which the strength of concrete increases after mixing Some of these are discussed below First though a couple of definitions may be useful The processes of 'setting' and 'hardening' are often confused Setting is the stiffening of the concrete after it has been placed A concrete can be 'set' in that it is no longer fluid but it may Get price

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Effect of Lateral Confinement on Strength of Concrete

laterally and provide the required ductility This paper deals with studies on the compressive strength of concrete specimens having confinement in various quantities Studies on reinforced cement concrete specimens were used to understand the influence of the lateral confinement on the compressive strength of concrete Get price

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Low Concrete Cylinder Strength — What why how

Effect of Curing Condition on Compressive Strength of Concrete Test Specimens NRMCA Publication 53 NRMCA Silver Spring MD Review of Variables that Influence Measured Concrete Compressive Strength David N Richardson NRMCA Publication 179 NRMCA Silver Spring MD Low Strength Tests? Maybe Not! E O Goeb Concrete Products December 1992 Get price

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Compressive Strength of Concrete Concrete Cubes

Compressive Strength The compressive strength of any material is defined as the resistance to failure under the action of compressive forces Especially for concrete compressive strength is an important parameter to determine the performance of the material during service conditions Get price

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Effects of Waste Asbestos Cement Sheet on Compressive

IJTSRD Effects of Waste Asbestos Cement Sheet on Compressive Strength and Flexural Strength of Concrete 10% and 15%by weight of coarse aggregate The properties for fresh concrete are tested for Compressive Strength and flexural strength at the age of 7 14 and 28 days It is found that with the increase in the percentage replacement of Get price

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What is the effect of coarse aggregate size in compressive

What is the effect of coarse aggregate size in compressive strength of concrete? When we design mix the concrete its target strength is much less than the compressive strength of the aggregates used in the formation It can also be clearly seen in the mix design procedure that greater the maximum size of coarse aggregate used less is the Get price

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Tension Vs Compression of Concrete

Concrete has enormous compressive strength the ability to withstand heavy weights or forces on it It also gains strength as it ages Concrete will solidify in a few hours and harden or set in a few days but continues to gain strength for at least 28 days Get price

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Effect of Cement

The plot of compressive strength of concrete mixes with variations of cement-water ratio is shown in Figure (1) Figure (2) shows the plot of compressive strength with variations of ages It was observed that the optimum compressive strength at 28 days after casting Figure (3) and Figure (4) show theGet price

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Effects of Coarse Aggregate Size on the Compressive

Abdullahi M Effect of Aggregate Type on Compressive Strength of Concrete International Journal of Civil and Structural Engineering 2(3) 2012 pp 791-800 DOI 10 6088/ijcser 00202030008 Neetu and Rabbani A Influence of size of aggregates on the Compressive strength of concrete Get price

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Compressive and Tensile Strength of Concrete Relation

The theoretical compressive strength of concrete is eight times larger than its tensile strength This implies a fixed relation between the compressive and tensile strength of concrete In fact there is a close relation but not a direct proportionality The ratio of tensile to compressive strength is lower for higher compressive strengths Get price

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COMPRESSIVE STRENGTH TESTING VARIABLES FOR CONCRETE

Figure 2 illustrates the effect of aspect ratio on apparent compressive strength of solid specimens Hollow concrete masonry units are less affected by variations in h/t For example research has shown little change in apparent compressive strength when the unit height is reduced by one-third or less Get price

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New Views on Effect of Recycled Aggregates on Concrete

An equation that accurately predicts concrete compressive strength in terms of these parameters is presented Particular attention has been paid to the complex effect that old concrete and adhered mortar have on concrete compressive strength and its mid-term evolution Get price

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Effect of Aggregates On Strength Of Concrete

Using higher number of fines modulus without decreasing amount of mixing water decrease the compressive strength of concrete Shape And Size Effect On Concrete Strength Aggregates shape and size has a strong influence on properties of concrete Rough surface textured particles increase the compressive strength of concrete up to 20-30% Get price

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Modeling the cementitious effect of the Pozzolana on the

In the context of modeling the effect of Pozzolana on the compressive strength of concrete this research has followed a procedure which allowed to distinguish the contribution of Pozzolana from that of cement and to better control the use of this natural material to improve the compressive strength of concrete 3 Test methodologyGet price

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Hardened Concrete

Dependence of compressive strength on mix parameters The w/c is the single most important factor governing the strength of concrete High w/c implies high porosity and thus lowered strength The trend shown in Figure 1 for the dependence of compressive strength on the w/c is Get price

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Hardened Concrete

Dependence of compressive strength on mix parameters The w/c is the single most important factor governing the strength of concrete High w/c implies high porosity and thus lowered strength The trend shown in Figure 1 for the dependence of compressive strength on the w/c is Get price

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Effect of aggregate type on Compressive strength of

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 Get price

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WHAT ARE THE FACTORS INFLUENCING COMPRESSIVE STRENGTH

Factors Affecting Strength Test Results of Concrete Compressive strength is the most important property of concrete The compressive strength of concrete is determined in the laboratory in controlled conditions On the basis of this test result we judge the quality of concrete But sometimes the strength test results vary so widely that it becomes difficult Get price

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Effect Of Glass Powder On Compressive Strength Of Concrete

The sheet glass cutting industries producing waste glass material which are not recycled at present and usually delivered to landfills for disposal Using glass powder in concrete is an interesting possibility for economy on waste disposalGet price

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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 Get price

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Effect of recycled coarse aggregate on concrete

Jun 22 2011Abstract The effect of recycled coarse aggregate on concrete compressive strength was investigated based on the concrete skeleton theory For this purpose 30 mix proportions of concrete with target cube compressive strength ranging from 20 to 60 MPa were cast with normal coarse aggregate and recycled coarse aggregate from different strength parent concretes Get price

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Statistical analysis of the effective factors on the 28

Compressive strength and setting time tests have been carried out based on DIN standards in this study Interactions of these factors have been obtained by the use of analysis of variance and regression equations of these factors have been obtained to predict the concrete compressive strength Get price

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The Effects of Higher Strength and Associated Concrete

and compressive strength Compressive strength was found to correlate well with permeability Concrete characteristics found to be desirable include compressive strength in the 45 to 50 MPa range flexural strength in the 4 5 to 6 0 range non-alakali reactive aggregate that is freeze-thaw distress resistant a well-graded aggregate with large topGet price

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New Views on Effect of Recycled Aggregates on Concrete

An equation that accurately predicts concrete compressive strength in terms of these parameters is presented Particular attention has been paid to the complex effect that old concrete and adhered mortar have on concrete compressive strength and its mid-term evolution Get price

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What is the effect of coarse aggregate size in compressive

Sep 03 2014When we design mix the concrete its target strength is much less than the compressive strength of the aggregates used in the formation It can also be clearly seen in the mix design procedure that greater the maximum size of coarse aggregate useGet price

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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 0 5 were investigated Water samples such as tap water waste water well water bore Get price

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Compressive and Tensile Strength of Concrete Relation

The theoretical compressive strength of concrete is eight times larger than its tensile strength This implies a fixed relation between the compressive and tensile strength of concrete In fact there is a close relation but not a direct proportionality The ratio of tensile to compressive strength is lower for higher compressive strengths Get price

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What is the effect of coarse aggregate size in compressive

What is the effect of coarse aggregate size in compressive strength of concrete? When we design mix the concrete its target strength is much less than the compressive strength of the aggregates used in the formation It can also be clearly seen in the mix design procedure that greater the maximum size of coarse aggregate used less is the Get price

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