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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: Quality Control of Concrete by Means of Short-Termed Tests at La Angostura Hydroelectric Project, State of Chiapas, Mexico
Author(s): Manuel Mena Ferrer
Publication: Special Publication
Appears on pages(s): 51-74
Keywords: accelerated tests; compressive strength; concretes; dams;
fresh concretes; hydration; quality control; spillways; water-cement
Abstract:During the construction of La Angostura Hydroelectric Pro-ject, owned by Comision Federal de Electricidad (CFE) of Mexico, quality control of concrete has been achieved by means of short-termed tests, in addition to the standard 28-day tests. Two types of short-termed tests were performed: analysis of fresh concrete samples according to a non-standardized method devel-oped at the laboratories of CFE, and autogenous curing compressive strength following Procedure C of ASTM Designation C 684. This paper presents the results obtained in these tests after a three-year period of application at the job site; they have been ana-lyzed statistically and correlations among them are discussed. It was concluded that fresh concrete analysis tests were rea-sonably accurate to determine the actual composition of freshly mixed concrete, but the results did not allow the prediction of the 28-day concrete strength, because of influence of changes in cement charac-ter: istics. The autogenous curing strength test represented a good means to predict the 28-day concrete strength for all types of mixes, save for 3-in. maximum aggregate size, possibly due to wet sieving.
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