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D5113-97 – Standard Test Method Technical Guide
📐 Test Method Overview and Scope
ASTM D5113-97, originally approved in 1997 and reapproved in 2021, provides a standardized procedure for measuring adhesive attack on rigid cellular polystyrene (RCPS) foam. This test method quantifies cavitation damage—the pitting and wearing away of the foam surface—which is critical for assessing the compatibility of adhesives in building construction applications. The standard emphasizes that values in SI units are to be regarded as standard, and it is developed in line with international standardization principles.
🧪 Apparatus, Materials, and Conditioning Requirements
The test utilizes a circular template with an inside diameter of 25 mm (1.0 in.) and a depth of 6 mm (1/4 in.) to standardize the test area. A circulating air oven capable of maintaining 40 ± 1°C (104 ± 2°F) is required for elevated temperature testing. The primary test material is Type IV RCPS foam with a nominal thickness of 25 mm (1.0 in.); if alternative foam types are used, their type, thickness, and density must be recorded. Conditioning of both the test specimen and adhesive is mandatory: maintain them at 23 ± 1°C (73 ± 2°F) and 50 ± 5% relative humidity for 24 hours prior to testing.
| 🔧 Parameter | 📏 Specification |
|---|---|
| Template Inner Diameter | 25 mm (1.0 in.) |
| Template Depth | 6 mm (1/4 in.) |
| Oven Temperature Tolerance | 40 ± 1°C (104 ± 2°F) |
| Conditioning Temperature | 23 ± 1°C (73 ± 2°F) |
| Conditioning Humidity | 50 ± 5% RH |
| Specimen Material | Type IV RCPS Foam |
| Specimen Thickness | 25 mm (1.0 in.) |
| Conditioning Duration | 24 hours |
| Adhesive Setting Time | 24 hours |
💡 Practical Tip: Always record the type, thickness, and density if using foam other than Type IV to ensure traceability and reproducibility.
⚙️ Test Procedure and Evaluation
The procedure involves bonding two RCPS sections using the adhesive under evaluation. Assemble enough specimens to test two assemblies at both standard temperature (23°C) and elevated temperature (40°C). Allow the adhesive to set for 24 hours, then measure and record the degree of cavitation damage. This quantitative assessment helps end users decide which adhesive is compatible with RCPS foam by measuring the amount of cavitation caused by adhesive components.
⚠️ Safety Note: This standard does not address all safety concerns associated with its use. Users must establish appropriate safety, health, and environmental practices before handling adhesives and foam materials.
❓ Frequently Asked Questions
🔍 What is cavitation damage in RCPS foam?
Cavitation damage is defined as the p