Abstract
Ensuring precise dimensional quality of individual precast concrete (PC) slabs is crucial to guarantee smooth assembly at construction sites. Although many studies have been conducted to increase the accuracy of dimensional quality assessment (DQA), there has been few studies that systematically determine best locations where accuracy is maximized and scanning time is minimized. To tackle this issue, this study presents a scan planning technique for rapid and accurate DQA of PC slabs. A two-scan strategy along the longitudinal direction is proposed as PC slabs are lengthy to avoid the effect of large incident angle. A series of experimental tests are conducted and the results show a DQA accuracy of 3.1 mm within 582 s for a full-scale slab with 12-m long, outperforming the previous study by 4.6 %. The findings of this study are expected to be useful for accurate and rapid DQA of PC slabs.
Published Version
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