Case 2
Navigation
- Introduction
- Causes of Defects
- Good Practices
- Standards
- Maintenance and Diagnostics
- Remedial
- Similar Cases
- References
Maintenance and Diagnostics
Regular inspections should be carried out methodically at regular intervals to detect for any defects. The instruments can be used extensively to diagnose of the defects and to take the action to keep the structure in good condition. The following high-tech instruments and techniques can be used to test the sealant.
Diagnostics of Defect
Computer-Controlled Sealant Testing
- Useful for testing sealants on construction materials, such as aluminum, which have an expansion coefficient larger than other typical construction materials, such as masonry, bricks, and concrete.
- Optional environmental chamber permits specimens to be tested at temperatures from -75°F to 450°F (-59°C to 232°C).
- Reference ASTM standards C719, C910, and other similar requirements.
Sealing Compound Testers
- Test the durability of joint sealants quickly and accurately.
- Optional cooling chamber allows testing to -30°F (-34°C).
- Multiple specimen capacity reduces testing time.
- Rigid frame construction and guide rods maintain alignment.
- See ASTM specifications C719, C836, C910, and C920. Also refer to JIS 9010 and Federal SS-S200, TT-S227, and TT-5230.
Moisture meter
Detects moisture beneath the surface being tested by measuring the resistance between two low frequency signals transmitted from conductive pads on the base of the instrument.
The moisture meter is also used to define the levels of moisture concentration on the roofs. From the readings, the user can quantify the moisture as damp, wet or saturated.