What is the rate of core sample collection for asphalt concrete from 0 to 4000 sq.m.?

The correct choice indicates a core sample collection rate of one core per 600 square meters for asphalt concrete within the specified range of 0 to 4000 square meters. This standard reflects industry best practices established to ensure that adequate sampling occurs for quality control and assessment.

By collecting a core sample from this frequency, it allows for a sufficient representation of the asphalt concrete being evaluated. This systematic approach helps in determining the material's properties, structural integrity, and performance potential, which is essential for making informed decisions regarding construction quality and future maintenance needs.

In comparison to other rates, sampling at a different interval could either lead to inadequate data collection or may result in excessive sampling, which can be inefficient and unnecessary. Thus, the choice of 600 square meters strikes a balance between thoroughness and practicality.