Tension Test Methods for Wood, Wood-Base Materials, and Sandwich Constructions

An Innovative Test Method for Tensile Strength of Concrete by Applying the Strut-and-Tie Methodology

Materials ◽

10.3390/ma13122776 ◽

2020 ◽

Vol 13 (12) ◽

pp. 2776 ◽

Cited By ~ 1

Author(s):

Wen-Cheng Liao ◽

Po-Shao Chen ◽

Chung-Wen Hung ◽

Suyash Kishor Wagh

Keyword(s):

Tensile Strength ◽

Test Methods ◽

Standard Test ◽

Strength Test ◽

Tension Test ◽

Test Method ◽

Direct Tension ◽

Direct Tension Test ◽

Strut And Tie ◽

Tensile Strength Test

Tensile strength is one of the important mechanical properties of concrete, but it is difficult to measure accurately due to the brittle nature of concrete in tension. The three widely used test methods for measuring the tensile strength of concrete each have their shortcomings: the direct tension test equipment is not easy to set up, particularly for alignment, and there are no standard test specifications; the tensile strengths obtained from the test method of splitting tensile strength (American Society for Testing and Materials, ASTM C496) and that of flexural strength of concrete (ASTM C78) are significantly different from the actual tensile strength owing to mechanisms of methodologies and test setup. The objective of this research is to develop a new concrete tensile strength test method that is easy to conduct and the result is close to the direct tension strength. By applying the strut-and-tie concept and modifying the experimental design of the ASTM C78, a new concrete tensile strength test method is proposed. The test results show that the concrete tensile strength obtained by this proposed method is close to the value obtained from the direct tension test for concrete with compressive strengths from 25 to 55 MPa. It shows that this innovative test method, which is precise and easy to conduct, can be an effective alternative for tensile strength of concrete.

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Interpretation of Indirect Tension Test Based on Viscoelasticity

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/1590-06 ◽

1997 ◽

Vol 1590 (1) ◽

pp. 45-52 ◽

Cited By ~ 5

Author(s):

A. Drescher ◽

D. E. Newcomb ◽

W. Zhang

Keyword(s):

Asphalt Concrete ◽

Complex Modulus ◽

Resilient Modulus ◽

Traditional Approach ◽

Test Methods ◽

Tension Test ◽

Current Test ◽

Indirect Tension ◽

Materials Used ◽

Indirect Tension Test

The diametral indirect tension test is a convenient configuration for determining the modulus of asphalt concrete samples. The resilient modulus test has been a traditional approach to characterizing the stiffness of asphalt concrete, but it leaves much to be desired when considering the viscous behavior this material exhibits, even at low temperatures. A method for determining the complex compliance, complex modulus, and phase angle of asphalt mixtures using the indirect tensile test and a haversine load history is presented here. This test may be performed over a range of frequencies and temperatures as demonstrated on materials used in the Minnesota Road Research Project. The use of the haversine loading simplifies the test when compared with the pulse loading and rest time used in the resilient modulus test, and it allows for the characterization of the elastic and viscous components of the material's overall behavior, which is very difficult, at best, with the current test methods.

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Sandwich Constructions and Core Materials; General Test Methods

10.4271/amsstd401 ◽

1999 ◽

Author(s):

Keyword(s):

Test Methods ◽

General Test ◽

Sandwich Constructions ◽

Core Materials

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Re-Examining the Bulge Test: Methods for Improving Accuracy and Reliability

MRS Proceedings ◽

10.1557/proc-239-257 ◽

1991 ◽

Vol 239 ◽

Cited By ~ 7

Author(s):

Martha K. Small ◽

Joost J. Vlassak ◽

William D. Nix

Keyword(s):

Thin Film ◽

Mechanical Properties ◽

Tensile Tests ◽

Test Methods ◽

Tension Test ◽

Bulge Test ◽

Test Results ◽

Bulk Materials ◽

Test Technique ◽

Improving Accuracy

ABSTRACTSince its first application to thin films in the 1950's, the bulge test has had a prominent place in the field of thin film mechanical properties. The major appeal of the technique is that it is analogous to the familiar uniaxial tension test, which is commonly applied to bulk materials. At the same time, it avoids the sample tearing and alignment problems associated with micro-tensile tests. Unfortunately, bulge test results have been sometimes controversial and difficult to reproduce. In this paper we address possible causes for mese inconsistencies and describe a method by which the bulge test technique can be made to produce accurate and reliable results.

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