scholarly journals Fine-Grainedcellular Concrete Creep Analysis Technique with Consideration Forcarbonation

2015 ◽  
Vol 9 (4) ◽  
Author(s):  
Said-Alvi Yusupovich Murtazaiev ◽  
Valeriy Stanislavovich Lesovik ◽  
Deni Karim-Sultanovich Bataiev ◽  
Natalia Vasilievna Chernysheva ◽  
Magomed Salamuvich Saidumov
Keyword(s):  
Concrete Creep ◽  
Analysis Technique ◽  
Creep Analysis

scholarly journals Concrete Creep Analysis Method Based on a Long-Term Test of Prestressed Concrete Beam

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Mingfang Yang ◽  
Song Jin ◽  
Jinxin Gong
Keyword(s):  
Prestressed Concrete ◽  
Concrete Beam ◽  
Creep Model ◽  
Test Results ◽  
Analysis Method ◽  
Loading Test ◽  
Concrete Creep ◽  
Prestressed Concrete Beam ◽  
Creep Analysis

Concrete creep plays a significant role in the long-term performance of the prestressed concrete structure. However, most of the existing prediction models cannot accurately reflect the in-site concrete creep in a bridge construction environment. To improve the prediction accuracy of creep effects in concrete structures, an innovative creep analysis method is developed in this study. Parameters in the creep model in fib MC 2010 have been calibrated with respect to the long-term loading test results of the prestressed concrete beam. The measured strains of concrete and the midspan deflections of the test beam are compared with the predicted results using the creep model in fib MC 2010. It indicates that the results predicted by the calibrated creep model are in good agreement with the test results. However, the results predicted by the creep model in fib MC 2010 significantly deviate from the test results. This proposed creep analysis method can provide a new thought to improve the predicted effect of the creep effects on creep-sensitive structures.

Selection of Concrete Creep Analytical Models for Modern Prestressed Bridges

2011 ◽  
Vol 90-93 ◽  
pp. 1023-1026
Author(s):  
Qing Xiang Zeng ◽  
Da Jian Han
Keyword(s):  
Prestressed Concrete ◽  
Building Materials ◽  
Concrete Strength ◽  
Construction Materials ◽  
Concrete Bridges ◽  
Analytical Models ◽  
Initial Stresses ◽  
Design Stage ◽  
Concrete Creep ◽  
Creep Analysis

The modern prestressed concrete bridges have the characteristics of large-span, high concrete strength, reinforced volume prestress and linear shape complexity. The structure bearing capacity and durability are considerable impacted by concrete creep, such as stresses redistribution and deflections increase. Some of the prediction concrete creep models that are being widely used at present are briefly introduced in this paper. Based on the analysis of existing research achievement, for the aim of improving the calculation accuracy of creep effects in bridge structures, several main problems that should be paid attention to in concrete creep analysis are pointed out from four aspects: (1) in design stage, the reasonable creep prediction model should be selected in accord with the local building materials and environment conditions; (2) during the analysis of creep effects, the initial stresses state and the stresses redistribution should be attended; (3) the reliability of prestress loss calculation should be considered in analysis of concrete creep effects; (4) the differences between normal construction materials and that of new types should be taken into account in concrete creep analysis.

Analysis on the Deflection of Cantilever Construction Based on Viscoelasticity

2014 ◽  
Vol 1030-1032 ◽  
pp. 1078-1081
Author(s):  
Long Fan Peng ◽  
Zhi Da Li
Keyword(s):  
Construction Process ◽  
Analysis Method ◽  
Viscoelastic Problem ◽  
Concrete Creep ◽  
Creep Effect ◽  
Rigid Frame ◽  
Creep Analysis ◽  
Cantilever Construction ◽  
Rigid Frame Bridge

The creep of concrete in the construction process of deformation influential, especially in the cantilever pouring construction, short age of concrete, creep effect more apparent. Meaning for cantilever construction of Bridges, creep analysis must be properly considered section at different time of loading values and the concrete ages of different segments. In this paper, based on the viscoelastic problem of cantilever construction of concrete creep analysis method, analyzes the deflection of cantilever construction process of a rigid-frame bridge, and compared with the actual measured value.

Strain analysis in composite ceramics

1986 ◽  
Vol 44 ◽  
pp. 494-497
Author(s):  
W. M. Kriven
Keyword(s):  
Strain Field ◽  
Strain Analysis ◽  
Processing Temperature ◽  
Transformation Toughening ◽  
Zirconia Ceramics ◽  
Volume Increase ◽  
Analysis Technique ◽  
Fundamental Understanding ◽  
Contrast Analysis ◽  
Elastic Strain Field

Significant progress towards a fundamental understanding of transformation toughening in composite zirconia ceramics was made possible by the application of a TEM contrast analysis technique for imaging elastic strains. Spherical zirconia particles dispersed in a large-grained alumina matrix were examined by 1 MeV HVEM to simulate bulk conditions. A thermal contraction mismatch arose on cooling from the processing temperature of 1500°C to RT. Tetragonal ZrO2 contracted amisotropically with α(ct) = 16 X 10-6/°C and α(at) = 11 X 10-6/°C and faster than Al2O3 which contracted relatively isotropically at α = 8 X 10-6/°C. A volume increase of +4.9% accompanied the transformation to monoclinic symmetry at room temperature. The elastic strain field surrounding a particle before transformation was 3-dimensionally correlated with the internal crystallographic orientation of the particle and with the strain field after transformation. The aim of this paper is to theoretically and experimentally describe this technique using the ZrO2 as an example and thereby to illustrate the experimental requirements Tor such an analysis in other systems.

Pengaruh Tingkat Literasi Keuangan Syariah dan Kepercayaan Masyarakat terhadap Minat Menabung di Bank Syariah

2020 ◽  
Vol 3 (2) ◽  
pp. 140-153
Author(s):  
Resti Fadhilah Nurrohmah ◽  
Radia Purbayati
Keyword(s):  
Financial Literacy ◽  
Linear Regression Analysis ◽  
Public Trust ◽  
Multiple Linear Regression Analysis ◽  
Primary Data ◽  
Public Confidence ◽  
Islamic Banks ◽  
Variable Level ◽  
Analysis Technique ◽  
The City

The purpose of this study was to study the level of Islamic financial literacy and public confidence in the interest in saving in Islamic banks. The variables in this study are the level of Islamic financial literacy (X1), public trust (X2), and interest in saving (Y).The method of this study is descriptive quantitative approach. The data source of this study are primary data obtained by distributing questionnaires. Respondents taken are residents in the city of Bandung, with samples domiciled in the city of Bandung and at least 17 years old. The data analysis technique uses multiple linear regression analysis. The results showed that the variable level of islamic financial literacy and public trust has positive effect in the interest in saving in Islamic banks. The findings in this study provide a reference to Islamic banks, the level of literacy and public trust regarding interest in saving, therefore Islamic banks must socialize to the public.

FAKTOR-FAKTOR YANG MEMPENGARUHI KUALITAS AUDIT

2019 ◽  
Vol 5 (1) ◽  
pp. 50-63
Author(s):  
Heru Heryanto ◽  
Nur Laela ◽  
Riana R Dewi
Keyword(s):  
Linear Regression ◽  
Multiple Linear Regression ◽  
Audit Quality ◽  
Positive Influence ◽  
T Test ◽  
Coefficient Of Determination ◽  
Analysis Tool ◽  
Validity And Reliability ◽  
Test Analysis ◽  
Analysis Technique

This study aims to determine the significance of the influence of competence, independence, professionalism, auditor experience, accountability, and auditor's knowledge of audit quality. This study uses a questionnaire with a population and sample, namely all auditors who work at the Public Accounting Office (KAP) in the Special Region of Yogyakarta and Surakarta. Sampling techniques using Convenience Sampling with a sample of 61 respondents. The data used in this study is a questionnaire using a Likert scale 1 to 5. The data analysis technique used in this study is multiple linear regression using the SPSSprogram for Windows. The analysis tool in this study using validity and reliability, the classical assumption (normality test, multicollinearity, heteroscedasticity test and autocorrelation test) while the data were analyzed using multiple linear regression test, t test, F test and the coefficient of determination (R2).Based on the results of the t-test analysis performed, it shows that there is a positive influence of competence, independence, professionalism, auditor experience, accountability, and auditor's knowledge of audit quality and simultaneously competency, independence, professionalism, auditor experience, accountability, and auditor knowledge variables affect quality audit

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