JTG 3450-2019 in English

This standard provides detailed procedures and methods for conducting on-site tests of road subgrade and pavement. It outlines the necessary equipment, operational steps, and data collection techniques to ensure accurate and consistent results. The content is structured to guide practitioners in the correct application of testing methodologies under various field conditions. It includes specifications for different types of tests, such as compaction tests, density measurements, and strength assessments. The standard also covers the interpretation of test results and their relevance to the quality and performance of road structures. This document serves as a reference for professionals involved in the construction, maintenance, and evaluation of road infrastructure.