Cast-in-Place Concrete Connections for Precast Deck Systems (2011) / Chapter Skim
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Pages 710-717

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From page 710...
... G-i Appendix G Large-Scale Laboratory Bridge and Subassemblage Core Analysis
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From page 711...
... G-1 G.1 Introduction to Coring Analysis Several core samples were removed from the large-scale bridge and subassemblage specimens to investigate the presence of internal reflective cracking. The cores were analyzed initially by the naked eye, and subsequently with the aid of a microscope.
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From page 712...
... G-2 Figure G1: Photograph of Olympus Stereomicroscope SZX12 used for core analysis Figure G2: Identified crack marked on core specimen using red ink
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From page 713...
... G-3 Figure G3: Crack widths marked on core specimen in pencil Table G1: Crack width classification categories Crack Classification Crack Width (W) 0.0021 W < 0.002" A 0.002" ≤ W < 0.008" B 0.008" ≤ W < 0.023" C 0.023" ≤ W < 0.200" D W ≥ 0.200" 1Cracks classified as having width < 0.002" are shown simply with a "2" in Table G2.
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From page 714...
... G-4 Figure G4: Location of reference line for measurement of vertical location of cracking in core specimens
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From page 715...
... G-5 Core Designation Core Characteristics Reflective Crack Characteristics Specimen1 X-Coord.2 Y-Coord.3 Location of Core Side of Longitudinal Joint Core Diameter Distance from Longitudinal Joint or Web/C.I.P. interface Side of Core Depth of Crack4 Width of Crack5 C1-S1 26 0 Longitudinal Joint N/A 2 ¾" S.C.6 N.O.7 N.O.7 N.O.7 N.O.7 C1-S1 134 0 Longitudinal Joint N/A 2 ¾" S.C.6 N.O.7 N.O.7 N.O.7 N.O.7 C1-S1 192 2 Longitudinal Joint North 2 ¾" S.C.6 N.O.7 N.O.7 N.O.7 N.O.7 C1-S1 197.5 0 Longitudinal Joint N/A 2 ¾" S.C.6 1/8" South 1/8" South West East 2 ¾" (up)
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From page 716...
... G-6 Core Designation Core Characteristics Reflective Crack Characteristics Specimen1 X-Coord.2 Y-Coord.3 Location of Core Side of Longitudinal Joint Core Diameter Distance from Longitudinal Joint or Web/C.I.P. interface Side of Core Depth of Crack4 Width of Crack5 SSMBLG 1 31.5 0 Longitudinal Joint N/A 2 ¾" ¾" East 1 ¼" East North South 7 ½" (up)
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From page 717...
... G-7 Core Designation Core Characteristics Reflective Crack Characteristics Specimen1 X-Coord.2 Y-Coord.3 Location of Core Side of Longitudinal Joint Core Diameter Distance from Longitudinal Joint or Web/C.I.P. interface Side of Core Depth of Crack4 Width of Crack5 SSMBLG 6 32 0 Longitudinal Joint N/A 2 ¾" ¾" East 1 ½" East North South 1 ¾" 2 ¼" 2: 0"-1 ¾" A: 0"-1 ¾"; 2: 1 ¾"-2 ¼" SSMBLG 6 32 12 Web/C.I.P.
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