Elastobond 3405

GENERAL DESCRIPTION

STAR ELASTO-BOND 3405 Crack and Joint Sealant;
• Low Penetration
• Self-Leveling
• Rapid Melting
• Flexible to -20°F
• Excellent Adhesion
• Sets-Up Quickly
• Resists Tracking

RECOMMENDED USES

STAR Elasto-Bond 3405 is recommended for sealing cracks and joints in Portland cement, asphaltic pavements, and parking lots. It is designed to seal expansion and contraction joints, longitudinal and transverse cracks, joints between concrete and asphaltic shoulders, and random cracks.

TYPICAL PROPERTIES

Recommended Application Temp . . . . . . . . . . . . . 370 – 390ºF
Maximum Heating Temp . . . . . . . . . . . . . . . . . . . . . . . . . .410ºF
Maximum Heating Time . . . . . . . . . . . . . . . . . . . . . . . . . 12 Hrs.
Penetration (150 gr./5 sec) . . . . . . . . . . . . . . . . . . . . . . 90 Max.
Resiliency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60% Min.
Flow at 140ºF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 mm Max.
Bond, -20ºF/50% Ext . . . . . . . . . . . . . . . . . . . . . Passes 3 Cycles
0ºF/100% Ext . . . . . . . . . . . . . . . . . . . . . . . . . . . Passes 3 Cycles
Specific Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.14
Asphalt Compatibility . . . . . . . . . . . . . . . . . . . . . . . Compatible

COVERAGE

Width	Depth	Pounds/100 ln. ft.
3/8″	3/8″	6.9
3/8″	1/2″	9.3
1/2″	1/2″	12.3
1/2″	1″	24.7
3/4″	1/2″	18.5
3/4″	3/4″	27.98

SPECIFICATIONS

ASTM-D3405
ASTM-D6690 Type II & III
AASHTO-M301

Exceeds
ASTM-D1190
ASTM-D6690 Type I
AASHTO-M173
Fed. Spec. SS-S-1401

SURFACE PREPARATION

Proper surface preparation facilitates adequate adhesion and consequently the maximum life of the sealant. In order for proper adhesion, the crack/joint must be free of moisture, dust, loose aggregate, and other contaminates. The substrate and air temperatures must be 40ºF or above. Sawing, routing, and/or sandblasting are the preferred methods of preparation. Use oil-free compressed air and heat to clean and dry the joint immediately prior to sealing. Cracks/joints should be sized so that the maximum extension and compression do not exceed 50% of the width. Best results are obtained when the cracks/joints are opened at least 1/2 inch wide.

CURING TIME

Allow STAR STA-FLEX^TM Trowel Grade to cure before seal coating and/or opening to traffic. The cure time will vary according to weather conditions. Under ideal conditions (80 deg. F. and 50% Relative Humidity), the STAR STA-FLEX^TM Trowel Grade will form a film within the first hour of application and will cure within 4 hours to be suitable for seal coating.

MELTING and APPLICATION

The melting kettle should be a conventional oil jacketed unit equipped with an agitator and temperature control devices for both the material and heat transfer oil. Carefully insert small quantities of STAR Elasto-Bond 3405 and the plastic bag into the melting equipment while the agitator is turned off. Load material slowly to avoid splash back. After the initial load has reached the recommended pouring temperature, fresh material may be added to the melter as sealant is used. Melt only the material that will be used during that day. Purge material remaining in the kettle lines at the end of each sealing operation. The material may be safely reheated and can be applied using a pressure feed wand system or a pour pot.

PACKAGING

STAR Elasto-Bond 3405 is packaged in 2-30 lb. poly-bags in a 60-lb. High strength corrugated box. Each Pallet contains 36 boxes or approximately 2,160 pounds of STAR Elasto-Bond 3405.