Tag Archives: precast ribbed panels

177-191 J. Miljan and M. Kiviste
Estimation of Residual Flexural Capacity of Existing Precast Concrete Panels by Visual Inspection
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Estimation of Residual Flexural Capacity of Existing Precast Concrete Panels by Visual Inspection

J. Miljan¹ and M. Kiviste²

¹ Institute of Forestry and Rural Engineering, Estonian University of Life Sciences,
Kreutzwaldi 5, 51014 Tartu, Estonia; e-mail: jaan.miljan@emu.ee
² Institute of Forestry and Rural Engineering, Estonian University of Life Sciences,
Kreutzwaldi 5, 51014 Tartu, Estonia; e-mail: mihkel.kiviste@emu.ee

Abstract:

The influence of visual assessment grade on the residual flexural capacity of 46 existing precast concrete ribbed panels was studied. Before the tests, the panels were assessed on a 6-point rating scale according to visually distinguishable corrosion deterioration. All panels, the ultimate load of which was lower than the control load, received grade 0 on visual rating scale. Consequently, attention should be paid to panels where the concrete cover of longitudinal reinforcement has spalled (grade 0), which could be a sign of decreasing load capacity. The majority of panels with grade 0 exhibited larger deflections under load than panels with higher grades. Of the 46 panels tested flexural ductile failure was noticed in 36 panels.

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