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Showing 166-170 of 231 search results
An automated people mover (APM) at Los Angeles International Airport will reduce traffic and provide quicker access to terminals and transportation stations. To accommodate the APM guideway construction over operational roads and around existing buildings, the project team applied a cast-in-place segmental bridge construction method using formwork travelers.
Available in the following language(s): Spanish
There is a need for displacement-based approaches for anchorage design that will consider realistic anchorage behavior by accounting for relevant parameters: anchor stiffness, baseplate geometry, anchorage pattern, and other factors. The article provides a discussion of the general concept of linear and nonlinear spring models suitable for the calculation of anchorage forces.
Available in the following language(s): Spanish
The Trustees of the ACI Foundation recently restructured its Strategic Development Council as a new council, the Concrete Innovation Council (CIC). This article introduces the CIC and discusses how it will support the ACI Foundation’s ongoing efforts to stimulate and support innovation within ACI and the concrete industry.
Available in the following language(s): Spanish
Concrete for a large light-rail infrastructure project in the Northwest region of the United States was proposed to be switched from using ordinary portland cement to portland limestone cement (PLC). The article presents research performed to verify that the design requirement of a 100-year service life for the structure can be obtained with PLC concretes containing Class F fly ash.
Available in the following language(s): Spanish
Much of the concrete produced in the United States contains supplementary cementitious materials (SCMs). The degree of reaction (DOR) of SCMs can be calculated using the pozzolanic reactivity test (PRT), which requires the use of both isothermal calorimetry and thermogravimetric analysis of test samples. The article describes how to determine DOR for commercial SCMs using only isothermal calorimetry, making it easier for commercial testing and production laboratories to evaluate SCMs.
Available in the following language(s): Spanish