Gilson Gray Iron 9000 Capping Compound (50LB Bag)

Gilson Gray Iron 9000 Capping Compound for Concrete Testing

Gilson Gray Iron 9000 Capping Compound is a high-performance sulfur mortar capping compound designed to deliver consistent and even load distribution during concrete strength testing. This newly improved compound is formulated with ultra-thin, low-odor flakes made from sulfur and mineral filler, ensuring precision and ease of use in laboratory and field applications.

Fast Melting with Optimal Pouring Range

Gray Iron 9000 melts quickly at 230°–240°F (110°–115°C), offering a wide and forgiving pouring range of 265°–290°F (129°–143°C). Its rapid melting and low odor properties make it efficient and user-friendly, while minimizing workplace discomfort.

Exceptional Strength and Durability

The compound achieves compressive strengths exceeding 8,000psi within just two hours, meeting ASTM C617 standards for testing 2in cubes. Bond strength is rated at 150psi or higher, and these properties remain consistent over time, even in humid storage conditions. This ensures capped specimens maintain their integrity for prolonged periods.

Re-Melting Without Loss of Quality

If overheating occurs, Gray Iron 9000 remains completely reusable once cooled. Solidified material can be re-melted repeatedly without any degradation in performance or properties, making it both cost-effective and sustainable for repeated use.

Packaging and Bulk Options

Each bag weighs 50lb (22.68kg) and is carefully packaged for secure shipping and handling. For large-scale projects or high-volume needs, ordering 40 or more bags unlocks a value pricing option, helping you reduce costs while maintaining premium quality.

Applications and Standards Compliance

Gray Iron 9000 is ideal for capping concrete cylinders and cubes in preparation for compressive strength testing. It fully complies with ASTM C617, ASTM C287, and AASHTO T 231 standards, ensuring reliability for industry-specific testing requirements.

Features at a Glance:

• High-performance sulfur mortar designed for even load distribution
• Quick melting at 230°–240°F (110°–115°C) with a wide pour range for flexibility
• Ultra-thin, low-odor flakes for easy and efficient use
• Overheating-resistant and completely reusable, saving time and resources
• Compressive strength over 8,000psi and bond strength of 150psi or more
• Long-lasting properties, even in humid storage conditions
• Compliant with ASTM and AASHTO standards for superior reliability

Material Composition:  Sulfur and Crystalline Silica

Applicable Standards:

• ASTM C617
• ASTM C287
• AASHTO T 231

Gilson Gray Iron 9000 Capping Compound is the perfect solution for professionals seeking dependable and efficient capping materials for concrete strength testing. With its reliable performance, reusability, and compliance with industry standards, it’s a trusted choice for labs and construction sites alike.