What is ASTM D6690?

ASTM D6690 — Standard Specification for Joint and Crack Sealants Hot Applied for Concrete and Asphalt Pavements.

Table of Contents

What is joint sealing compound?

This is a polymer-based gasket used in building and construction design applications to fill and protect joints between two substrates. It is used to seal joints, gaps and openings between two or more substrates to prevent environmental elements that provide conditions that may lead to corrosion.

What are the properties of sealants?

Sealant Properties

Consistency. Pourable sealants have a fluid consistency and are generally used in horizontal joints, and can be self-levelling.
Durability.
Hardness.
Exposure Resistance.
Movement Capability.
Modulus.
Adhesion.
Staining.

What is a Type 4 sealant?

CrackMaster PF Type IV is a single component, hot applied polymer modified crack and joint sealant with polyester fibers. When melted and properly applied it forms a resilient crack sealant for both asphaltic and cementatious pavements. CrackMaster PF Type IV forms a lasting seal that resists tracking in warm climates.

What is type1 sealant?

Crafco PolyFlex Type 1 sealant is a hot-applied, asphalt based product used to fill cracks and joints in asphalt or Portland cement. concrete pavements in moderate to cold climates.

Which material is used for joint sealer?

There are several types of sealants are: Silicone based sealants. Urethane based sealants. Acrylic based sealants.

What are the two general types of sealants?

There are several types of sealants are: Silicone based sealants. Urethane based sealants.

What are different materials used as sealing materials?

Sealing materials

FKM/FPM – Fluorocarbon rubber.
PEEK – Polyetheretherketone.
EPDM – Ethylene-Propylene-Diene-Rubber.
FFKM/FFPM – Perfluoroelastomer.
PTFE – Polytetrafluoroethylene.
VMQ – Silicone-Elastomer.
NBR – Acrylonitrile-Butadiene-Elastomer.

What is 3405 sealant?

3405 was specifically formulated for the cost-effective sealing of cracks and joints in Portland cement and asphalt concrete highways. It is ideal for large, medium, and small-scale sealing projects.

How can I extend the application life of 3405 joint sealant?

Application life may be extended by adding fresh material as sealant is applied and the quantity in the kettle decreases. 3405 hot-pour joint sealant can be reheated once within the prescribed safe heating temperature limits. Repeated reheating may result in material degradation or gelling in the melter.

How do you melt and seal a 3405?

Melting … 3405 should be melted in an oil-jacketed melter-applicator equipped with an agitator and separate temperature thermometers for oil bath and melting vat. Sealing may be done at air temperatures of 40º F (4º C) and higher. Surface Preparation … The joints and cracks to be sealed must be clean and dry.

What is the scope of joint sealant?

1. Scope 1.1 This specification covers joint sealants of the hot-poured type intended for use in sealing joints and cracks in portland cement concrete and asphaltic concrete pavements.