ASTM D4748

ASTM D4748 is the standard test method for determining the thickness of bound pavement layers using short-pulse radar. It provides a non-destructive way to evaluate pavement layer thickness, which can support construction verification, maintenance planning, and quality control. By focusing on radar-based measurement, this ASTM standard helps users assess pavement structures without extensive coring or disruptive sampling, making thickness checks more efficient and potentially less invasive.

What is ASTM D4748?

ASTM D4748 defines a test method for measuring the thickness of bound pavement layers with short-pulse radar. As an ASTM standard, it is intended to support consistent testing practice for pavement evaluation, especially where layer thickness is an important project parameter. The method is commonly used to help determine whether pavement layers meet expected dimensional requirements and to provide a repeatable approach to thickness assessment using radar-based equipment.

Where is ASTM D4748 used?

This standard is typically used in pavement engineering, field testing, and materials evaluation where bound pavement layers must be measured or verified. It may be applied during construction review, rehabilitation work, or condition assessment when short-pulse radar equipment is used to inspect pavement structure. ASTM D4748 is especially relevant to workflows that rely on non-destructive measurement and documented thickness data for technical review, acceptance decisions, or ongoing asset management.

Why is ASTM D4748 important?

ASTM D4748 matters because reliable thickness measurement can affect compliance, performance evaluation, and project acceptance. Using a recognized test method helps promote consistency across inspections and reduces uncertainty when assessing bound pavement layers. For owners, engineers, and testing teams, it can support better quality control and more confident decisions about pavement construction or rehabilitation. In practice, the standard helps align testing procedures with an established ASTM reference.

• Short-pulse radar-based thickness measurement
• Bound pavement layer evaluation
• Non-destructive field testing
• Construction and quality control support
• Documentation for technical review