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The article presents a recently completed preliminary study of the effects of finishing and surface treatments on durability of decorative concrete. It discusses results of water-absorption testing per RILEM Test Method 11.4 and modified ASTM C1585, as well as abrasion resistance testing per ASTM C944/C944M and with a Chaplin Abrasion Tester, conducted on specimens representing hard-troweled, stamped, and exposed aggregate finishes with various surface treatments.
Available in the following language(s): Spanish
As fiber-reinforced polymer (FRP) reinforcement is being implemented in concrete structures in the United States, there is a need for consensus-based, well-established, and well-recognized FRP-related standards and specifications. The article focuses on documents currently available and adopted by various departments of transportation and building officials as well as the process from certification to field implementation of FRP reinforcement in concrete structures.
Available in the following language(s): Spanish
Can vapor retarders protect concrete slabs-on-ground from sulfate attack? The authors believe they can. To support this claim, the article discusses durability requirements in ACI 318, as well as exposure requirements in other industry standards and reports, and provides test data from evaluations of systems for isolating concrete from aggressive environments, a contractor- sponsored study, and a manufacturer-sponsored study.
Available in the following language(s): Spanish
Minimum lap splice lengths for welded wire reinforcement (WWR) are presented in Section 25.5.4 of ACI 318-19 and Section 3.3.2.5(a) of ACI 301-20. In this Q&A, these requirements are interpreted for slabs-on-ground that are not included as part of a building’s lateral force-resisting system. In addition, the Q&A discusses crack control recommendations for slabs-on-ground per ACI 360R-10.
Available in the following language(s): Spanish
The ACI Foundation is now accepting Fellowship and Scholarship applications from students pursing a degree related to concrete.
Available in the following language(s): Spanish