In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
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: A Study of the Cuase of Nonuniformity in the Compressive Strength of Concrete Pavement Cores
Author(s): V. L. Glover
Publication: Journal Proceedings
Appears on pages(s): 133-148
Abstract:It is common knowledge that the individual compressive strengths of cores from concrete pavements are less uniform than those of cylindrical test speci-mens made in the laboratory. This more pronounced nonuniformity is believed to be due to variables encountered in field practices which are not present in the laboratory. The Illinois Division of Highways had occasion to test a large number of pavement cores and the nonuniformity found in the test results was such as to make these results wholly unsatisfactory for the desired comparisons. termine the causes. A study was made to de-An attempt was made to duplicate the nonuniformity known to exist in field concrete, proceeding on the theory that segregation might influence nonuniformity. Results indicate that the position of the coarse aggregate particles in the specimen does not affect greatly the uniformity of the compressive strenqth; that the . amount ot coarse aggregate particles in the specimen, that is, the degree to which separation of the aggregate particles and the mortar has taken place, does have an effect; that segregation of the coarser particles of aggregate from the finer ones also has an effect; and that part of the nonuniformity of compressive strength is due to the difference in age of the specimens at the time of test, oavement cores usually being tested at ages considerably greater than the usual standardized age of laboratory speci-mens.
Click here to become an online Journal subscriber