Uniaxial tensile strength of cementations composites

Journal Article · Sun May 01 00:00:00 EDT 1994 · Journal of Testing and Evaluation; (United States)

OSTI ID:7302957

Toutanji, H A ^[1]; El-Korchi, T ^[2]

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1. Univ. of Puerto Rico, Mayaguez (Puerto Rico). Civil Infrastructure Research Center
2. Worcester Polytechnic Institute, MA (United States)

A brief review of various methods of measuring the uniaxial tensile strength of cementations composites is presented. The pros and cons of these methods are described. Common problems associated with the traditional uniaxial tension testing techniques exist, and these problems arise from two areas: (1) stress concentration at gripping and (2) misalignment. These testing artifacts can significantly influence the test results, producing measurements that underestimate the intrinsic strength of the material. A novel approach for testing cementations composites in tension is described. The test uses cylindrical bar specimens 9.5 mm in diameter and 120 mm in length. The specimens are fractured in a hydraulic chamber which allows specimen self-alignment. The advantages of using the technique are minimization of misalignment and stress concentration, larger specimen volume under stress, and determination of initiation of fracture. The tensile strength values obtained using the hydraulic tension test technique are compared to those obtained by the traditional uniaxial tension tests. The average tensile strength of bigger size specimens, such as 16 mm in diameter and 120 mm in length, was predicted using the application of Weibull theory. Furthermore, these specimens were also tested using the hydraulic tension testing technique. The data show that the predicted values obtained using the application of Weibull theory compare well with the experimental values obtained by the novel tension testing technique.

• OSTI ID: 7302957
• Journal Information: Journal of Testing and Evaluation; (United States), Journal Name: Journal of Testing and Evaluation; (United States) Vol. 22:3; ISSN JTEVAB; ISSN 0090-3973
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
BUILDING MATERIALS
CEMENTS
COMPOSITE MATERIALS
MATERIALS
MATERIALS TESTING
MEASURING METHODS
MECHANICAL PROPERTIES
MECHANICAL TESTS
TENSILE PROPERTIES
TESTING