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Daily Quiz (26)


What is the main difference between penetrating sealers classified as water-repellents and those classified as water-repellent preservatives in treating wood substrates?


True or false: Penetrating sealers such as siloxanes do not allow moisture to escape from masonry and concrete.


What organization maintains an approved product list for sealers and finishes used on athletic wood floors?


True or False: Clear, penetrating silane and siloxane sealers have a strongly limiting effect on the ability of water vapor to exit concrete and masonry.


What degree of surface profile is required on concrete to be treated with a siloxane sealer?


True or False? Some historic preservationists might object to the use of a clear, penetrating sealer on the masonry walls of an historic structure.


Which of the following organizations provides information about good practice in the selection and use of sealants in expansion joints?


True or false: Preservationists prefer penetrating sealers over coatings to protect masonry substrates on historic structures.


What kind of concrete sealers penetrate the pores of the concrete and form little if any film build?


Which of the following organizations provides information about good practice in the selection and use of sealants in expansion joints?


What chemistry type is used to create sealers that penetrate and line the pores of concrete?


True or false: Penetrating sealers such as silanes and siloxanes for concrete decks have good crack bridging capability.


While a concrete surface needs to be clean prior to application of a silane or siloxane sealer, it does not require substantial roughening or profiling. Why?


Penetrating sealers are sometimes avoided by conservators on the masonry substrates of historic structures for what main reason?


True or false: Parking decks are always sealed with penetrating sealers like silanes.


True or false: All sealers for concrete substrates form a thin film on the surface of the concrete.


True or false: Non-film-forming coatings used as sealers on concrete and masonry cannot be pigmented to alter the appearance properties of substrates.


Specifications for athletic floor sealers and finishes, together with an approved products list, are maintained by what association?


True or false: A coating system on an exterior concrete block wall must provide protection from wind-driven rain and, if moisture vapor diffuses from inside to outside, be sufficiently permeable to allow vapor to exit the wall.


True or false: Silane and siloxane sealers prevent both water ingress into concrete and moisture vapor from escaping the concrete.


True or false: Non-film-forming sealers, such as siloxanes, allow moisture to escape from within concrete substrates.


True or false: Preservationists always prefer penetrating sealers over coatings on masonry substrates in work to preserve historic structures.


True or false: Siloxane sealers are typically applied at 1-2 mils dry film thickness on concrete substrates.


Which of the following organizations provides information about good practice in the selection and use of sealants in expansion joints?


True or false: Clear, non-film forming masonry sealers, such as silanes and siloxanes, have little effect on vapor permeability, thereby allowing water vapor to exit the masonry substrate.


Penetrating sealers are sometimes avoided by conservators on the masonry substrates of historic structures for what reason?


 
 
   

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Wasser High-Tech Coatings Inc.
Wasser Coatings Protect

Wasser Coatings offer a complete range of Moisture Cure Urethane (NEPCOAT approved) systems in addition to Polyurea membranes and linings(NSF).
www.wassercoatings.com


NLB Corporation
See NLB Crawler hit the heights

Surface prep 100 ft. and more above the ground is easy with the SRT-10-W1 Crawler. Rotating water jets work fast, with vacuum recovery and wireless controls.


Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors

Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com


KTA-Tator, Inc. - Corporate Office
KTA-Tator EH&S Services

• Ambient & Worker Exposure Air Monitoring
• Safety & Health Program Development
• Lead Paint Assessments
& Specifications
• Health Hazard & Jobsite Safety Assessments
Call 1-800-245-6379


Mitsubishi Gas Chemical America
Performance Amine 1,3-BAC

A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.


SAFE Systems, Inc.
SAFE Systems'
Blast Lights &
Deadman Switches

Halogen or LED blast lights available with our NEW urethane bumper. Switches available in many colors for color coding your hoses.


Atlas Material Testing Technology

Helping You Put Your Products To The Test

• Outdoor Accelerated
Weathering
• Laboratory Testing
Services
• Accelerated Weathering
Instruments

www.atlas-mts.com atlas.info@ametek.com


Midsun Specialty Products
Self-Healing Field Repairs

Use Stopaq corrosion prevention coatings on pipelines, field joints, tank chimes, structural steel and more. Learn more at www.midsunsp.com/stopaq


Trelawny Surface Preparation Technology
Surface Preparation Equipment

Manufacturer of needle scalers, grinders, scarifiers and scabblers. Pneumatic tools for Marine and Construction. US distributor CS Unitec: 800-700-5919

 
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