This is the second of three articles discussing ACI 301-10, “Specifications for Structural Concrete.” This article provides a detailed review of some of the modifications made to default requirements that have existed in previous versions of ACI 301. Only a few of the modifications and additions to ACI 301 are described in this article. Therefore, design and construction teams should thoroughly review ACI 301-10

This is the first in a series of three articles that will focus on specifying performance-based requirements for concrete. This article provides a brief history of the development of the performance-based movement, introduces the concept of specifying performance-based requirements for concrete, and discusses some of the challenges in implementing performance-based criteria for concrete

The Minnesota Department of Transportation (MnDOT) opened the Minnesota Road Research (MnROAD) facility in Albertville, MN, in 1994. By 2008, interest in examining more current pavement designs led to the reconstruction of some test sections. To extract as much useful information as possible, a comprehensive forensic investigation was conducted during the removal of the original sections. This article presents some of the findings, with particular focus on unusual degradation of transverse joints