scholarly journals Application of size effect to compressive strength of concrete members

Sadhana ◽  
2002 ◽  
Vol 27 (4) ◽  
pp. 467-484 ◽  
Author(s):  
Jin-Keun Kim ◽  
Seong-Tae Yi
Keyword(s):  
Compressive Strength ◽  
Size Effect ◽  
Concrete Members ◽  
Compressive Strength Of Concrete

Size effect in compressive strength of concrete

1978 ◽  
Vol 8 (2) ◽  
pp. 181-190 ◽  
Author(s):  
Y. Tanigawa ◽  
K. Yamada
Keyword(s):  
Compressive Strength ◽  
Size Effect ◽  
Compressive Strength Of Concrete

scholarly journals A Stress-Strain Model for Unconfined Concrete in Compression considering the Size Effect

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Keun-Hyeok Yang ◽  
Yongjei Lee ◽  
Ju-Hyun Mun
Keyword(s):  
Compressive Strength ◽  
Aspect Ratio ◽  
Size Effect ◽  
Maximum Stress ◽  
Damage Zone ◽  
Peak Stress ◽  
Equivalent Diameter ◽  
Stress Strain ◽  
Compressive Strength Of Concrete ◽  
Strain Model

In this study, a stress-strain model for unconfined concrete with the consideration of the size effect was proposed. The compressive strength model that is based on the function of specimen width and aspect ratio was used for determining the maximum stress. In addition, in stress-strain relationship, a strain at the maximum stress was formulated as a function of compressive strength considering the size effect using the nonlinear regression analysis of data records compiled from a wide variety of specimens. The descending branch after the maximum stress was formulated with the consideration of the effect of decreasing area of fracture energy with the increase in equivalent diameter and aspect ratio of the specimen in the compression damage zone (CDZ) model. The key parameter for the slope of the descending branch was formulated as a function of equivalent diameter and aspect ratio of the specimen, concrete density, and compressive strength of concrete. Consequently, a rational stress-strain model for unconfined concrete was proposed. This model reflects trends that the maximum stress and strain at the peak stress decrease and the slope of the descending branch increases, when the equivalent diameter and aspect ratio of the specimen increase. The proposed model agrees well with the test results, irrespective of the compressive strength of concrete, concrete type, equivalent diameter, and aspect ratio of the specimen.

Effect of Specimen Shape and Size on Compressive Strength of Concrete

2010 ◽  
Vol 163-167 ◽  
pp. 1375-1379 ◽  
Author(s):  
Yi Che ◽  
Sheng Long Ban ◽  
Jian Yu Cui ◽  
Geng Chen ◽  
Yu Pu Song
Keyword(s):  
Compressive Strength ◽  
Size Effect ◽  
Good Accuracy ◽  
Concrete Strength ◽  
Specimen Size ◽  
Failure Patterns ◽  
Compression Failure ◽  
Compressive Strength Of Concrete ◽  
Specimen Shape ◽  
Shape And Size

The purpose of this study is to investigate the influence of specimen size and shape on compressive strength of concrete. Concrete cubes, cylinders and prisms with their size ranging from 150mm to 450mm were tested in unaxial compression. Failure patterns and the effect of specimen shape and size on compressive strength of concrete were investigated. In addition, theoretical size effect models, such as the MSEL and MFSL were used to analyze the size effect of concrete strength. It is shown that for specimens tested in this study, the two models are both applicable to predicting the compressive strength of specimens in various sizes with a reasonably good accuracy.

Size Effect of Concrete Compressive Strength with Different Aggregate Composition

2008 ◽  
Vol 400-402 ◽  
pp. 831-835 ◽  
Author(s):  
Jie Su ◽  
Zuan Yang ◽  
Zhi Fang
Keyword(s):  
Compressive Strength ◽  
Size Effect ◽  
Axial Compression ◽  
Axial Load ◽  
Test Method ◽  
Test Results ◽  
Concrete Compressive Strength ◽  
Concrete Prism ◽  
Compressive Strength Of Concrete ◽  
Aggregate Composition

81 concrete prism specimens under axial compression were tested to invesgigate the size effect on the axial load stength. Three different kinds of specimens with the dimension 100×100×300mm, 150×150×300mm, 200×200×400mm were tested. The parameters including compressive strength of concrete and aggregate composition are taken into consideration. Three different strength grades of concrete and three different aggregate composition are included in those specimens. The test method are undertaken according to ASTM C 39/C 39M-2005. Based on the test results, a new size effect law for different kinds of concrete in prismatical compressive strength is suggested and those relative parameters on the size effect are discussed.

scholarly journals Size effect at testing strength properties of concrete

2021 ◽  
Vol 20 (4) ◽  
pp. 037-046
Author(s):  
Amanda Akram
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Size Effect ◽  
Strength Properties ◽  
Test Results ◽  
Variable Parameters ◽  
Crushed Granite ◽  
Compressive Strength Of Concrete ◽  
Tensile Splitting Strength ◽  
Water Ratio

Various strength characteristics of concrete are considered as fracture parameters. The compressive strength of concrete is of paramount importance when designing concrete structures, whereas tensile strength of concrete is the basic property when estimating cracking resistance of a structure and analysing fracture processes in concrete. When testing the compressive strength of concrete, the results are dependent on the shape and dimensions of used specimens. Some findings reported in the literature suggest that size effect exists also when testing such fracture properties of concrete as tensile strength. Unfortunately this problem is much less recognized and described compared to size effect in compressive test results. In this paper, the experimental investigation is presented on how the length of cylindrical specimens influences the tensile splitting strength of concrete obtained by means of the Brazilian method. Additional variable parameters were: type of aggregate (natural gravel and crushed granite) and cement-water ratio (C/W = 1.8 and C/W = 2.6).  In conducted laboratory experiments a higher splitting tensile strength of concrete was noted for all specimens with nominal dimensions of 150×150 mm, compared to specimens 150×300 mm in size, regardless of type of aggregate or cement-water ratio.

Sign in / Sign up

Export Citation Format

Share Document