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Visual Survey Tools

Visual Survey Tools. Defect classification guide Proformas, clip board and rubber bands Pencil, rubber, pencil sharpener Tape measure Wax crayons Hammer for drummy test Pen knife, chipping hammer pH indicator solution Crack gauges Camera Binoculars Torches Chair

francisjackson
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Visual Survey Tools

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  1. Visual Survey Tools • Defect classification guide • Proformas, clip board and rubber bands • Pencil, rubber, pencil sharpener • Tape measure • Wax crayons • Hammer for drummy test • Pen knife, chipping hammer • pH indicator solution • Crack gauges • Camera • Binoculars • Torches • Chair • Breaker/Grinding Core Cutter

  2. Grinding Core Cuts

  3. Crack Measuring Deformation Meter • Deformation Meter • Cracks are measured at various times • Accuracies ± 0.001mm to ± 0.1mm • Analogue or digital display • 5 mm max. crack width • Crack width meter • 10 reduction scales • Up to 5 mm width • Measuring magnifier • 8 x magnification • Up to 15 mm width • Accuracy ± 0.05mm • Crack Monitor • Horizontal and vertical scales • For flat areas & corners • Accuracy ± 0.10mm • Fix with glue or screws

  4. Accuracy of Free Crack Comparitor 30 20 10 0 Error (%) -10 -20 -30 -40 0.1 0.15 0.2 0.25 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.5 Stated Crack Width (mm)

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