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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: The Point-Load Test for Tensile Strength Estimation of Plain and Fibrous Concrete
Author(s): P.J. Robins
Publication: Special Publication
Appears on pages(s): 309-326
Keywords: concrete cores; concretes; fiber-reinforced concretes;
nondestructive tests; tensile strength; tension tests.
Abstract:Whilst compressive testing is by far the most common method of testing cores, there exists a need for a method of tensile strength estimation. The point-load test is investigated for its potential to satisfy this need, and the results of over 800 point-load core tests carried out on a plain, fibrous and sprayed fibrous concretes are discussed. A good straight-line relationship between flexural strength and 68mm core point-load strength is obtained for both plain and fibrous concretes. The average values of the coefficient of variation of the point-load strengths for plain and fibrous concretes were both between 8 and 9%; this compares with a value of 6% for the flexural strengths. The point-load method is shown to be of particular potential for assessing the strength properties of sprayed fibrous concretes.
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