D338518 Pdf - Astm

ASTM D3385-18, the "Standard Test Method for Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer," outlines a field procedure using a 12-inch inner and 24-inch outer ring to determine soil permeability. The constant-head method is suitable for measuring liquid infiltration in various soils, excluding those with high gravel content or excessive shrinkage. The full standard can be purchased directly from the ASTM Store.

Step-by-Step Summary of the Test Method (As Per ASTM D3385-18)

For engineers and technicians who eventually obtain the PDF, here is a condensed procedural overview: astm d338518 pdf

1. Introduction: Description of the BR material and its intended application.
2. Test Methods: Description of the test methods used to evaluate the BR properties.
3. Results: Presentation of the test results, including Mooney viscosity, cure properties, tensile properties, and dynamic properties.
4. Discussion: Interpretation of the test results and their implications for the BR material's performance.
5. Conclusion: Summary of the findings and recommendations for future testing or material development.

Procedure (condensed, practical steps)

The double-ring infiltrometer is the core apparatus. It consists of two concentric metal rings driven into the soil. Water is maintained at a constant level in both rings. The inner ring measures the vertical infiltration rate, while the outer ring creates a buffer zone to minimize lateral spread of water, ensuring that flow in the inner ring is predominantly one-dimensional (vertical). ASTM D3385-18, the "Standard Test Method for Infiltration

The "double-ring" design is critical for accuracy because it forces water in the inner ring to flow one-dimensionally (vertically). The outer ring acts as a buffer, saturating the surrounding soil to prevent lateral (sideways) spreading from the inner measurement area. Requirement under ASTM D3385-18 Method Constant Head Method (water level is kept steady) Ring Depth Driven typically to 150 mm (6 inches) Measurement Introduction : Description of the BR material and

ASTM D3385-18 establishes a standard field method for measuring soil infiltration rates using double-ring infiltrometers to assess hydraulic conductivity. This procedure involves maintaining a constant water head in concentric rings, measuring vertical water flow to determine the infiltration rate [1]. You can access the full standard through the ASTM website.

2. Literature Review

• Conduct a literature review to find existing research on the permeability of porous concrete. This can help you understand the background, significance, and applications of the standard.

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