### Statistical analysis of strength of concrete - ScienceDirect

01-01-1976 The statistical analysis indicates that the strength of the most of the groups of the concrete follow normal distribution with one percent significance level except for a small group of 150 kg/cm 2 concrete. The mean value and variance of the strength of the concrete in any group show a random variation.

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This paper presents the statistical analysis of compressive strength of concrete specimens delivered in a laboratory of Northern of Portugal. Three types of concretes were analyzed defined as C20,...

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The model prediction indicates that concretes in cast-in-place bridge structures designed with specified compressive strengths of 25 MPa (3.6 ksi), 28 MPa (4.0 ksi), and 35 MPa (5.0 ksi) reach their maximum strengths at about 40 years, with approximately 98% of the maximum strength occurring during the first 10 years.

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01-03-1996 A statistical description of the compressive strength of concrete in structures is derived that accounts for the inherent randomness of Factors F 1 and F 2 and also the typical strength variation within a specific structure.

Get price### Statistical analysis of strength of concrete - ScienceDirect

The statistical analysis indicates that the strength of the most of the groups of the concrete follow normal distribution with one percent significance level except for a small group of 150 kg/cm 2 concrete. The mean value and variance of the strength of the concrete in any group show a random variation.

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Statistical Analysis of Concrete Compressive Strengths for California Highway Bridges ... A new model for in-place strength of concrete structures is proposed as a function of the specified compressive strength, the normalized 28-day cylinder strength, ...

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10.0 MPa. Standard deviation of compressive strength was more than 7.0 MPa for 150 buildings, and of the 19buildings, it was more than 10.0 MPa. From the CV of the compressive strength shown in Figure 3, 78 buildingshave their CV more than 0.35. These imply that compressive strength of the buildings inspected hasconsiderable variation and there are so many buildings of low strength concrete.

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Data on tests of compressive strength of 150 mm concrete cubes collected during the last 10 yr period for characteristic concretes of 150 kgcm 2 250 kgcm 2 and 350 kgcm 2 is analysed. The statistical analysis indicates that the strength of the most of the groups of the concrete follow normal distribution with one percent significance level except for a small group of 150 kgcm 2 concrete

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19-05-2021 Finally, a statistical analysis was carried out to obtain the characteristic value of compressive strength for the masonry columns confined by FRCM, considering the analyzed prediction models. The research results have guiding significance for the compressive strength design of FRCM-confined masonry columns.

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To satisfy statistically based strength-performance requirements, the average strength of the concrete should be in excess of the specified compressive strength fc′. The required average strength fcr′ which is the strength used in mixture proportioning, depends on the expected variability of test results as measured by the coefficient of variation or standard deviation, and on the allowable proportion of tests

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Statistical Analysis of Concrete Compressive Strengths for California Highway Bridges ... A new model for in-place strength of concrete structures is proposed as a function of the specified compressive strength, the normalized 28-day cylinder strength, ...

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This paper presents the statistical analysis of compressive strength of concrete specimens delivered in a laboratory of Northern of Portugal. Three types of concretes were analyzed defined as C20, C25 and C30. In the study we used the results of three years, 1995 to 1997. The one-sample Kolmogorov-Smirnov Test was used to verify the normal distribution of the strength results.

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Statistical Analysis of Concrete Compressive Strengths for California Highway Bridges ... A new model for in-place strength of concrete structures is proposed as a function of the specified compressive strength, the normalized 28-day cylinder strength, ...

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Statistical analysis on concrete compressive strength of core specimens extracted from long-aged concrete beams book By S.D. Jo, S.H. Kwon, C.Y. Kim, Y.S. Park Book Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations

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Evaluation for Statistical Analysis of Compressive Strength of Temperature Controlled (TC) Concrete W.R.T. Change in Time as well as Weather Condition ¹ Er. Jatinder Kumar ¹Research Scholar, Civil Engineering Department, Universal Institutions of Engineering Technology, Lalru Mandi ² Er. Kshipra Kapoor ²Associate Professor,

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19-05-2021 Finally, a statistical analysis was carried out to obtain the characteristic value of compressive strength for the masonry columns confined by FRCM, considering the analyzed prediction models. The research results have guiding significance for the compressive strength design of FRCM-confined masonry columns.

Get price### Statistical Analysis Of Compressive Strength Of Concrete

Data on tests of compressive strength of 150 mm concrete cubes collected during the last 10 yr period for characteristic concretes of 150 kgcm 2 250 kgcm 2 and 350 kgcm 2 is analysed. The statistical analysis indicates that the strength of the most of the groups of the concrete follow normal distribution with one percent significance level except for a small group of 150 kgcm 2 concrete

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characteristic compressive cubic strength of concrete at 28 days. Although the fundamental importance of this matter in structural design, the statistical analysis geared to identify an accurate probabilistic model of the concrete strength has not been a central issue of the research works in the field for many years.

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of failures. Statistical analysis can also provide insight into the key factors influencing 28 days compressive strength through correlation analysis. Prediction of concrete compressive strength, therefore, has been an active area of research and a considerable number of

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02-04-2018 Then, the database of compressive strength influencing factors is established from vast literature after a statistical analysis of those data. Backpropagation artificial neural networks (BP-ANNs) are applied to establish a multifactorial model to predict the compressive strength of concrete in the wet-dry exposure environment.

Get price### STATISTICAL ANALYSIS OF COMPRESSIVE STRENGTH OF CONCRETE ...

This paper presents the statistical analysis of compressive strength of concrete specimens delivered in a laboratory of Northern of Portugal. Three types of concretes were analyzed defined as C20, C25 and C30. In the study we used the results of three years, 1995 to 1997. The one-sample Kolmogorov-Smirnov Test was used to verify the normal distribution of the strength results.

Get price### Statistical Analysis of Concrete Compressive Strengths for ...

### Evaluation for Statistical Analysis of Compressive ...

Evaluation for Statistical Analysis of Compressive Strength of Temperature Controlled (TC) Concrete W.R.T. Change in Time as well as Weather Condition ¹ Er. Jatinder Kumar ¹Research Scholar, Civil Engineering Department, Universal Institutions of Engineering Technology, Lalru Mandi ² Er. Kshipra Kapoor ²Associate Professor,

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See discussions, stats, and author profiles for this publication at: Statistical analysis of compressive strength of concrete specimens Article January 2003 CITATION 1 READS 3,820 3 authors, including: Some of the authors of this publication are also working on these related projects: Design of eco-efficient ultra-high performance fibre reinforced cement-based composite for rehabilitation ...

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Statistical Analyses of Compressive Strength of Jointed Plain Concrete Paving. Hossein Khazaei. Download PDF

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08-01-2017 Statistical Analysis of the Compressive Strength of Lightweight Aggregate Concrete Supervised by: Prof. Rajesh Jugulum 2. Introduction: Objectives: Statistical analysis could help in having a better understanding of the material used in many bridge constructions and interfere the durability and viability of these bridges.

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Statistical analysis of the effective factors on the 28 days compressive strength and setting time of the concrete. Abolpour B(1), Mehdi Afsahi M(1), Hosseini SG(2). Author information: (1)Department of Chemical Engineering, Shahid Bahonar University of Kerman, Kerman 76175, Iran.

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This paper describes a number of statistical methods to estimate, through an analysis of in-place test results, the in-place compressive strength of concrete expressed as strength of standard specimens. The evaluation of the probable existence of a linear correlation as a function of sample size is discussed. The regression laws and the degree of reliability of the estimates obtained is also ...

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Statistical Analysis Towards the Identification of Accurate Probability Distribution Models for the Compressive Strength 14 th World Conference , 2008 Stefano Silvestri

Get price### Prediction of Compressive Strength of Concrete in Wet-Dry ...

02-04-2018 Then, the database of compressive strength influencing factors is established from vast literature after a statistical analysis of those data. Backpropagation artificial neural networks (BP-ANNs) are applied to establish a multifactorial model to predict the compressive strength of concrete in the wet-dry exposure environment.

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