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Visual Inspection Checklist for Concrete Structure Based on ACI 201.1R

Visual Inspection Checklist for Concrete Structure Based on ACI 201.1R

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Checklist for concrete inspection are items that might have a bearing on the durability and performance of the concrete. The checklist can be further elaborated to examine other factors that influence concrete but not included in the checklist. The checklist would help inspector to conduct an inclusive and proper inspection.

Visual inspection is the process of concrete surface examination to specify and illustrate various concrete conditions concrete might demonstrate during its life span. It helps to determine concrete deterioration at early stages which facilitates repair of concrete member before replacement is required.

Table: Checklist for Visual Inspection of Concrete Structure

Inspection ItemsDescription
Description of structure1. Name, location, type, and size
2. Owner, project engineer, contractor, date of construction
3. Photographs involve general view and a detailed close-up of the condition of an area
4. Draw map-orientation showing the sunny and shady areas and the well and poorly drained regions.
Nature of environmental and loading conditionsExposure of the structure to various environmental and loading conditions:
1. Arid, subtropical, marine, freshwater, industrial environment.
2. Freezing and thawing, wetting and drying under a dry atmosphere.
3. Chemical corrosion and attack: sulfates, acids, bases, chloride, gases
4. Abrasion, erosion, cavitation, impact
5. Electrical conductivity
6. Deicing chemicals that contain chloride ions
7. Heat from adjacent sources
DrainageFlashing Joint, sealants, Weep holes, Contour Elevation of drains
Loading conditions1. Dead
2. Live
3. Impact
4. Vibration
5. Traffic
6. Seismic
7. Other types of loads
Soils (foundation conditions)1. Expansive soil
2. Compressible soil (settlement)
3. Evidence of pumping
Distress indicators1. Cracking
2. Staining
3. Surface deposits and exudations
4. Leaking
Overall apparent alignment of structure1. Settlement
2. Deflection
3. Expansion and contraction.
General Condition of Concrete Surface1. Good
2. Satisfactory
3. Poor
Formed and finished concrete surfaces1. Smoothness
2. Bugholes (surface air voids)
3. Sand streaks
4. Honeycomb
5. Soft areas
6. Cold joints
7. Staining
Cracking1. Location and frequency of cracks
2. Crack map
3. Crack width and pattern
4. Leaching
Scaling of concreteScaling type, area, and depth
Spalls and popoutsNumber, size, and depth type
Stains, efflorescence-
Exposed reinforcementCorrosion
Curling and warping-
ErosionAbrasion, Cavitation
Previous patching or other repair-
Surface coatings/protective systems/linings/ toppings1. Type and thickness
2. Bond to concrete
3. Condition
Penetrating sealersType, Effectiveness, Discoloration
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