Showing 161-165 of 187 search results

Fiber-Reinforced Polymer Reinforcement for Concrete Members

Fiber-reinforced polymer (FRP) reinforcement has been successfully used as structural reinforcement in concrete members in buildings and bridges for the past 30 years. FRP resists corrosion and has a high stiffness-to-weight ratio that reduces labor and costs relative to steel. The article discusses how FRP bars and meshes can be used as primary or secondary concrete reinforcement, in compliance with the legally adopted building codes in the United States.

Available in the following language(s): Spanish

Concrete Q&A: Anchorage Design and Baseplate Rigidity

The Concrete Q&A provides an answer for designing a baseplate anchored with rods embedded in a concrete pile cap. To bound a solution for design, two options are considered: a rigid baseplate, with the largest distance from the location of the compression reaction to the critical point, and a flexible baseplate, with the smallest internal lever arm and the largest design axial forces in the anchors.

Available in the following language(s): Spanish

Cliffs of Concrete

Scotland’s first design museum, the V&A Dundee in Dundee, Scotland, was opened in September 2018. The three-story building is shaped like two inverted pyramids and has exterior walls that twist both horizontally and vertically. The striated façade comprises 2429 precast concrete panels and invokes images of the cliffs of the Scottish coastline. The building is a hybrid structure of concrete and steelwork with reinforced concrete walls and structural steel floor and roof structures.

Available in the following language(s): Spanish

Pilot-Scale Efforts in Reducing Embodied Carbon Footprints of Concrete in India

There is a growing worldwide trend of making concrete more environmentally friendly. The article lists notable initiatives taken by some leading professional and manufacturing organizations in relation to developing criteria for characterizing the “greenness” of concrete. Further, the article provides a review of the current status of the concrete industry in India and recent pilot-scale efforts toward evolving and implementing green product certification in this country.

Available in the following language(s): Spanish

A New Way to Deliver Protection from Freezing-and-Thawing Damage

Uniformly dispersed, hollow-core polymeric microspheres can protect concrete from freezing-and-thawing damage. However, issues with handling and delivery of this material have prevented its widespread use. The article presents test data that show the effectiveness of a new method of delivering such microspheres into concrete. The method is based on a microsphere-powder blend that minimizes particle agglomeration and eases handling and delivery of the microspheres into concrete mixtures.

Available in the following language(s): Spanish