Gilson Gray Iron 9000 Capping Compound
Gilson Gray Iron 9000 Capping Compound is a new and improved sulfur mortar capping compound that ensures even load distribution during concrete strength testing. Ultra-thin, low-odor flakes are carefully formulated from sulfur and mineral filler.
Gray Iron melts quickly at 230°–240°F (110°–115°C), with a wide optimum pouring range of 265°–290°F (129°–143°C). The set time is about one minute, and shrinkage is minimal.
If accidental overheating occurs, the compound remains usable after cooling, and solidified material can be re-melted with no loss of properties. Compressive strength exceeds 8,000psi at two hours for ASTM C617 tests of 2in cubes, and bond strength is 150psi or more. The strength and bond properties of capped specimens do not degrade over time, even when stored in humid conditions.
Each bag weighs 50lb (22.68kg); order 40 or more bags for the value price option.
Material Sulfur and Crystalline Silica
Concrete Capping Compound Features:
- Reliable sulfur mortar capping compound offers faster melting times and lower optimum pour temperature
- Ultra-thin flakes melt quickly at 230°–240° F (110°–115°C) with reduced odor
- The compound is not damaged by overheating and can be re-melted with no loss of properties
- ASTM C617 compliant
Brows all of the bonded cylinder capping products as well as Melting Pots in Concrete Cylinder Capping and concrete testing equipment
Concrete Capping Compound Meets Test Methods:
- AASHTO T 231
- ASTM C 287
- ASTM C 617
View the full line of Concrete Capping supplies
The use of capping compound in the process of bonded concrete cylinders for concrete compression testing is a critical step that ensures accurate and reliable test results. Capping compounds are specially formulated materials applied to the ends of cylindrical concrete specimens to create a smooth and uniform surface for load distribution during testing.
Capping compounds are typically high-strength materials such as sulfur-based compounds or epoxy resins. They are mixed and prepared according to specific guidelines and standards to achieve the desired consistency and properties. The capping compound is then carefully applied to the ends of the concrete cylinders.
The primary purpose of capping compounds is to provide a consistent and even surface for load transfer during compression testing. By capping the specimens, irregularities or imperfections on the ends of the concrete cylinders, such as laitance or surface roughness, are eliminated. This ensures that the load applied during testing is uniformly distributed across the specimen's cross-sectional area, allowing for accurate determination of its compressive strength.
Capping compounds also help in minimizing the potential influence of end effects on the test results. They reduce the risk of localized stress concentrations or failure modes at the specimen ends, which can affect the measured compressive strength. The use of capping compounds provides a more representative and reliable assessment of the concrete's overall strength and performance.
Moreover, capping compounds offer a protective layer that helps preserve the integrity of the concrete specimens during handling and testing. They prevent moisture ingress and minimize the risk of damage to the ends, ensuring the specimens remain in the desired condition for accurate and repeatable testing.
In conclusion, the use of capping compounds in the process of bonded concrete cylinders for compression testing is crucial for achieving reliable and accurate results. These compounds create a smooth and uniform surface, minimize end effects, and provide protection to the specimens, allowing for a thorough assessment of the concrete's compressive strength and mechanical properties.
Related Blogs for Bonded Cylinder Capping:
Essential Steps for Capping Concrete: A Hassle-Free Guide
Benefits of Capping Compound for Concrete Cylinder Testing
Unbonded Caps for Concrete Cylinders: Low-Strength Breaks
