Translated Articles

Volunteers from ACI’s international chapters and international partner associations have translated CI articles into several languages. This activity helps advance the mission of ACI by further disseminating knowledge of concrete technology around the world.

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This month’s Q&A features a discussion on moisture in concrete slabs-on-ground. It focuses on water migration; pH on slab surfaces; efflorescence; vapor retarders/barriers; slab curling; moisture in slabs; concrete exposure to water, sulfates, freezing and thawing, and chlorides; admixtures to stop vapor transmission; and concrete moisture and flooring installation.

Available in the following language(s): Spanish


In this article, Johan Silfwerbrand provides a response to the article by Destrée and Mobasher included in this issue of CI. The author offers further discussion of different approaches for the design of steel fiber-reinforced concrete industrial floors as well as additional explanation of the statements in his original article and further research needs.

Available in the following language(s): Spanish


In the past, hydraulic or diesel hammers were used to reduce concrete piles, sometimes damaging the integrity of the piles and/or causing health problems. The new generation of hydraulic pile croppers (also known as cutters or breakers), including equipment pieces available from National Pile Croppers, provides better quality, efficiency, and safety.

Available in the following language(s): Spanish


The authors discuss an article by J.L. Silfwerbrand, “Industrial Fiber Concrete Floors,” published in the May 2021 issue of CI. Focusing on Belgian/Continental and Swedish approaches to the design of steel fiber-reinforced concrete slabs, the article presents an alternative perspective based on recent publications and latest developments in design and testing.

Available in the following language(s): Spanish


A 5 ft (1.5 m) thick foundation mat slab has been prepared for concrete placement. Reinforcing steel was installed over a 3 in. (76 mm) thick mud (or working) slab with an area of approximately 25,000 ft2 (2320 m2) finished flat (that is, no slopes or contours). There are puddles of standing rainwater deposited yesterday on top of the mud slab in random locations that range in depth up to 1/2 in. (13 mm). Are there any ACI requirements for placing concrete in such conditions?

Available in the following language(s): Spanish

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