What is ASTM 920?
ASTM C 920 is the Standard Specification for Elastomeric Joint Sealants that are cured single or multi-component, cold applied elastomeric sealants. The requirements involved in the testing and their meanings are described below.
What is ASTM 834?
This standard covers latex sealants used for sealing joints in building construction. The following are tests done within this standard: extrudability, after aging, artificial weathering, volume shrinkage, low-temperature flexibility, extension-recovery and adhesion, slump, staining and tack-free time.
What is ASTM c920 sealant?
This specification covers the properties of a cured single- or multi-component cold-applied elastomeric joint sealant for sealing, caulking, or glazing operations on buildings, plazas, and decks for vehicular or pedestrian use, and types of construction other than highway and airfield pavements and bridges.
What is ASTM c920 class 35?
Class 35 sealants can handle contraction or expansion movement up to 35 percent of the original joint width and are designed for use with joints that have a moderate amount of movement.
What is a elastomeric sealant?
Elastomeric caulks are used to seal cracks and crevices. Homeowners use caulk to seal openings where two building materials join. Among the area where caulk is used is the joint between a window frame and siding on the exterior of the home or along the edge of a bathtub where it joins the wall.
What is grade NF sealant?
Grade NF: Indication in a sealant specification that product does not meet the requirements for low. temperature flexibility of Grade 0 C. (
Is Tremflex 834 paintable?
Protective Equipment (PPE) and other health concerns. Keep product from freezing. Although Tremflex 834 is paintable, this does not imply adhesion to and compatibility with all paints.
What is modified silicone sealant?
Sikaflex® MS is a tough, high performance durable elastomeric joint sealant suitable for use in a wide range of external and internal building applications. It is based upon modified silicone polymer technology resulting in a unique combination of properties ideally suited to New Zealand climatic conditions.
What is a Class 35 caulk?
35. Sealant capable of handling movement, either. contraction or expansion, of 35% of the. original joint width. Joints designed for moderate.
What is this guide for building sealant testing?
This guide describes the recommended standard substrates and their recommended surface preparation for use in standard tests of building seals and sealants. This guide covers a screening approach to detect failure (adhesive or cohesive) of a structural sealant in a structural sealant-glazed window, curtain wall, or other similar system.
What are the different types of sealants and caulk?
Sealants and caulking compounds are available in different chem- istries (polyurethanes, silicones, acrylics, and modified acrylics, for example) and a range of qualities. Compliance with standard speci- fications ensures the quality of some of these products.
What is the elastomeric sealant test method?
This test method covers a laboratory procedure for quantitatively measuring the tensile adhesion properties of structural sealants, hereinafter referred to as the “sealant”. This test method covers two laboratory procedures for determining the extrusion rate of elastomeric sealants for use in building construction.
What are the requirements for a multicomponent chemically curing sealant?
A multicomponent chemically curing sealant shall be furnished in two or more components. A single-component and multicomponent sealant, when stored in the original unopened container at temperatures of not more than 27°C (80°F) shall be capable of meeting the requirements for at least 6 months after date of delivery.