Showing 116-120 of 172 search results

Odense Robotics Collaboration Project

Extrusion-based, three-dimensional concrete printing (3DCP) is one of the main areas of development in architectural and construction robotics, however, the process remains characterized by limited levels of automation. To move 3DCP closer to a truly automated digital fabrication, a group of Danish researchers and companies established the 3DLOOP project.

Available in the following language(s): Spanish

Anchor Reinforcement for Anchor Channels

Prefabricated curtain wall façade panels in high-rise buildings are often attached to the structure by anchor channels. To maximize floor space in these structures, connection points of the façade panels are moving closer to the edge, while concrete decks are becoming thinner. To overcome these challenges, an anchor channel supplemented with anchor reinforcement has been developed.

Available in the following language(s): Spanish

Near-Surface Qualities of Decorative Concrete

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

FRP Bars—From Certification to Field Use

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

Vapor Barriers Used with Capillary Breaks Reduce the Severity of Sulfate Exposure of Concrete

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