### Study on estimation of compressive strength of concrete in ...

bined the Young’s modulus estimation equation based on elas-tic theory with other elements such as the “New RC equation”8 that shows the general relation between Young’s modulus and the compressive strength of concrete in order to propose basic forms in a strength estimation equation.5 In the previously reported study5 at the specimen ...

More### Study on estimation of compressive strength of concrete in ...

10/01/2018 A method for such cases was proposed, in which the strength estimation equation is developed using core specimens taken from the concrete in the target structure. 6, 7 Even in this case, however, unless a sufficient quantity and breadth of compressive strength data are obtained, it is difficult to accurately determine the trends in the relation between the ultrasonic velocity and compressive ...

More### Estimation of the Compressive Strength of Concrete under ...

) to compressive strength as a function of compressive strength of concrete, by means of regression analysis. Regression analyses reveal that an acceptable relationship exists between the ratio of (I s(50) /fcu) and the compressive strength of concrete. The reliability and accuracy of proposed equation

More### EVALUATION OF CONCRETE COMPRESSIVE STRENGTH USING ...

Concrete compressive strength is assumed as one of the most important mechanical properties of concrete since it usually shows the overall quality of concrete. Although concrete compressive strength can be measured at different ages, codes generally specify standard 28-day testing [1,2]. This standard test needs curing time of 28 days which this time can be saved in the investigated model in ...

More### EVALUATION OF CONCRETE COMPRESSIVE STRENGTH USING ...

concrete compressive strength can be measured at different ages, codes generally specify standard 28-day testing [1,2]. This standard test needs curing time of 28 days which this time can be saved in the investigated model in this study. Data-driven models, which are studied in this paper, are easy to be used, fast, economical and are recommended by many scientists [3-6]. Therefore, having ...

More### Characteristic strength of concrete- Formula, Uses, and ...

The strength of concrete generally represents the compressive strength of concrete, as concrete has maximum compressive strength and is its unique feature. Therefore, in concrete the characteristic strength of concrete literally means Characteristic compressive strength unlike in other materials like steel or wood, etc. so most of the design of the concrete structure is done by adopting the ...

More### RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND

range of normal concrete strength, AlJ specifies the following equation to estimate modulus of elasticity. Eq.1 is applied to concrete of a specified design strength 36MPa or less which is defined as normal strength concrete. A number of experiments have revealed that the modulus of elastic-ity calculated by Eq.1 become higher than the actual values as the compressive strength . increases,

More### Estimating Concrete Strength by the Maturity Method

to the measured concrete flexural or compressive strength at the particular TTF value. The general form of the Nurse-Saul method is shown in Equation 1. TTF =∑(T a −T 0)∆t. Where: TTF = the time-temperature factor at age t, degree-days or degree-hours, ∆t = time interval, days or hours, T a = average concrete temperature during time interval, ∆t, °C, and. T. 0 = datum temperature ...

More### Compressive Strength Formula for Concrete using Ultrasonic ...

the compressive strength of concrete having different mixture proportions are put together and analyzed. No clear rules have been presented to describe how the relationship between UPV and the compressive strength of concrete changes with its mixture proportion. Therefore, there exists a high uncertainty when one tries to make use of UPV to predict the strength of concrete in different mixture ...

More### Estimation of the Compressive Strength of Concrete under ...

) to compressive strength as a function of compressive strength of concrete, by means of regression analysis. Regression analyses reveal that an acceptable relationship exists between the ratio of (I s(50) /fcu) and the compressive strength of concrete. The reliability and accuracy of proposed equation

More### Characteristic strength of concrete- Formula, Uses, and ...

The strength of concrete generally represents the compressive strength of concrete, as concrete has maximum compressive strength and is its unique feature. Therefore, in concrete the characteristic strength of concrete literally means Characteristic compressive strength unlike in other materials like steel or wood, etc. so most of the design of the concrete structure is done by adopting the ...

More### EVALUATION OF CONCRETE COMPRESSIVE STRENGTH USING ...

concrete compressive strength can be measured at different ages, codes generally specify standard 28-day testing [1,2]. This standard test needs curing time of 28 days which this time can be saved in the investigated model in this study. Data-driven models, which are studied in this paper, are easy to be used, fast, economical and are recommended by many scientists [3-6]. Therefore, having ...

More### ACCELERATED METHODS OF ESTIMATING THE STRENGTH OF CONCRETE

equations for estimating the potential strength of concrete by using the accelerated-curing methods recommended by the American Society for Testing and Materials. Cylinders made from 21 different batches of con crete were tested. Ranges of variables included in this investigation were types o.f cements (1, 2, and K); types of molds (steel, plastic, and card board); water-cement ratios (by ...

More### Estimating Concrete Strength by the Maturity Method

to the measured concrete flexural or compressive strength at the particular TTF value. The general form of the Nurse-Saul method is shown in Equation 1. TTF =∑(T a −T 0)∆t. Where: TTF = the time-temperature factor at age t, degree-days or degree-hours, ∆t = time interval, days or hours, T a = average concrete temperature during time interval, ∆t, °C, and. T. 0 = datum temperature ...

More### RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND MODULUS

range of normal concrete strength, AlJ specifies the following equation to estimate modulus of elasticity. Eq.1 is applied to concrete of a specified design strength 36MPa or less which is defined as normal strength concrete. A number of experiments have revealed that the modulus of elastic-ity calculated by Eq.1 become higher than the actual values as the compressive strength . increases,

More### Evaluation of concrete compressive strength estimation

Concrete is the most important construction materials. have advantages seriously depend on the correct mix. the strength of concrete is defined as the compressive strength of a sample that has been aged for 28 days. waiting 28 days from such a test

More### How to Calculate Compressive Strength Sciencing

26/11/2018 In other words, you squash it – and then use a simple mathematical formula to determine the compressive load it took before the material failed. TL;DR (Too Long; Didn't Read) The compressive stress formula is: CS = F ÷ A, where CS is the compressive strength, F is the force or load at point of failure and A is the initial cross-sectional surface area. Considerations for Testing Compressive ...

More### estimation compressive strength of concrete equation

Compressive strength or compression , Hence calculating the compressive strength of a material from the given equations , compressive strength of concrete .... How to Estimate In , equation Modern maturity , Test Method for Compressive Strength of Concrete Cylinders Cast in Place in , Practice for Estimating Concrete Strength by the .... Computing the Compressive Strength of Concrete ...

More### ESTIMATION OF COMPRESSIVE STRENGTH OF PUMPABLE CONCRETE

technique to estimate the compressive strength of it. This study help to predict the can compressive strength of pumpable concrete before its placement. It will reduce the number of trials, and save cost, labour and time. Keywords: Machine learning techniques, Support vector machine,Pumpable concrete, Compressive strength, Paste content. Dr Pronab Roy Assistantis Professor of Department of l ...

More### Estimation of compressive strength of high-strength ...

strength of high strength concrete with assumed analytical equations and it’s followed regression analysis by experimental data set [7]. However, these approaches are not easy to use and there are no accurate predictions available in the codes regarding the compressive strength of HSCs.

More### Estimation of the Compressive Strength of Concrete under ...

) to compressive strength as a function of compressive strength of concrete, by means of regression analysis. Regression analyses reveal that an acceptable relationship exists between the ratio of (I s(50) /fcu) and the compressive strength of concrete. The reliability and accuracy of proposed equation

More### Research Article Estimating the Concrete Compressive ...

relationship between the concrete compressive strength and other data elements. For predicting (estimating) the compressive strength of any concrete sample: (a) Map the sample concrete data to the appropriate cluster . (b) Apply the formula for the appropriate cluster wherethatsampleisbelonging.

More### Evaluation of concrete compressive strength estimation

Concrete is the most important construction materials. have advantages seriously depend on the correct mix. the strength of concrete is defined as the compressive strength of a sample that has been aged for 28 days. waiting 28 days from such a test

More### RELATIONSHIP BETWEEN COMPRESSIVE STRENGTH AND MODULUS

range of normal concrete strength, AlJ specifies the following equation to estimate modulus of elasticity. Eq.1 is applied to concrete of a specified design strength 36MPa or less which is defined as normal strength concrete. A number of experiments have revealed that the modulus of elastic-ity calculated by Eq.1 become higher than the actual values as the compressive strength . increases,

More### EVALUATION OF CONCRETE COMPRESSIVE STRENGTH USING ...

concrete compressive strength can be measured at different ages, codes generally specify standard 28-day testing [1,2]. This standard test needs curing time of 28 days which this time can be saved in the investigated model in this study. Data-driven models, which are studied in this paper, are easy to be used, fast, economical and are recommended by many scientists [3-6]. Therefore, having ...

More### ACCELERATED METHODS OF ESTIMATING THE STRENGTH OF CONCRETE

equations for estimating the potential strength of concrete by using the accelerated-curing methods recommended by the American Society for Testing and Materials. Cylinders made from 21 different batches of con crete were tested. Ranges of variables included in this investigation were types o.f cements (1, 2, and K); types of molds (steel, plastic, and card board); water-cement ratios (by ...

More### How to Calculate Compressive Strength Sciencing

26/11/2018 In other words, you squash it – and then use a simple mathematical formula to determine the compressive load it took before the material failed. TL;DR (Too Long; Didn't Read) The compressive stress formula is: CS = F ÷ A, where CS is the compressive strength, F is the force or load at point of failure and A is the initial cross-sectional surface area. Considerations for Testing Compressive ...

More### estimation compressive strength of concrete equation

Compressive strength or compression , Hence calculating the compressive strength of a material from the given equations , compressive strength of concrete .... How to Estimate In , equation Modern maturity , Test Method for Compressive Strength of Concrete Cylinders Cast in Place in , Practice for Estimating Concrete Strength by the .... Computing the Compressive Strength of Concrete ...

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