DataVXRoad Materials and Pavement DesignPaper
journal article·2022-12-02

Evaluation of joint activation and joint spacing in concrete overlays

Yu-An Chen, Peter C. Taylor, Halil Ceylan, Xuhao Wang

Road Materials and Pavement Design· Volume 23· Issue 12
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Source abstract

Abstract

Optimized joint spacing is crucial to ensure concrete overlay performance and service life. While pavement joints are used to control cracks in concrete slabs and help relieve stresses, not all sawn joints crack or “activate” initially. If cracks do not form below saw-cut joints, the effective slab length is high, potentially leading to excessive movements at the activated joints and increasing the risk of random cracking. Non-destructive testing (NDT) approaches, such as MIRA, are proved to be effective on detecting whether a saw-cut has been activated. The saw-cutting joints from 54 concrete overlay project sites in Iowa were evaluated using a MIRA. The data indicated that approximately 60% to 70% of joints assessed were activated for the shorter joint spacing, while more than 95% of joints were activated for conventional joint spacing. These results were used to develop recommendations with respect to optimized joint spacing of concrete overlays. .
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Concrete Properties and Behavior · Concrete and Cement Materials Research · Innovative concrete reinforcement materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Research and Development Center of Transport Industry of Technologies, Materials and Equipments of Highway Construction and Maintenance, (Gansu Road & Bridge Construction Group), Lanzhou, Gansu, China

Jackson Civil Engineering, Battle Ground, WA, USA

National Concrete Pavement Technology Center, Iowa State University, City, Ames, IA, USA

Civil, Construction and Environmental Engineering (CCEE), Iowa State University, Ames, IA, USA

School of Highway Engineering, Chang'an University, Xi An, China

Funding

Iowa Department of Transportation · National Natural Science Foundation · Gansu Road & Bridge Construction Group · Science and Technology Projects of Gansu Transportation Department

References (17)

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