BS EN 13286-47:2021 PDF Download

BS EN 13286-47:2021 is a standard that focuses on the testing methods for unbound and hydraulically bound mixtures. Specifically, it specifies the laboratory determination of the California bearing ratio and immediate bearing index. The California bearing ratio is a measurement used to evaluate the bearing capacity of a mixture, either immediately after compaction or after a curing period. Meanwhile, the immediate bearing index is the immediate California bearing ratio test without a surcharge.

This standard is intended for manufacturers and suppliers of unbound and hydraulically bound mixtures, suppliers of binders such as cement, civil engineers, contractors, and highway and road transport authorities. It provides guidance on how to conduct tests for the determination of the California bearing ratio and immediate bearing index, which are crucial factors in evaluating the strength of subgrade concrete. By following this standard, stakeholders can achieve more efficient designs for the construction of roads and highways, leading to improved service life, cost minimization, and prevention of accidents.

BS EN 13286-47:2021 supersedes the previous version from 2012 and includes some technical changes. These changes involve editorial modifications, a revised clause that provides more information on force-penetration curves and their correction, and a revised annex reflecting the changes in the clause. Compliance with this updated standard ensures the use of high-performance materials and accurate testing methods for the determination of the California bearing ratio and immediate bearing index.