AASHTO M 195-11 (2019) PDF Download

The AASHTO M 195-11 (2019) standard outlines the requirements and guidelines for the use of lightweight aggregates in structural concrete. The primary objective of this specification is to reduce the overall density of the concrete while ensuring that the compressive strength is maintained.

It is important to note that the procedures outlined in this specification are not intended for day-to-day job control of concrete. Instead, they serve as a general guideline for the use of lightweight aggregates in structural concrete applications. This specification is considered appropriate for most concrete scenarios, but it may be more or less restrictive than necessary for specific conditions or specialized purposes.

Examples of such specialized purposes include fire resistance, fill applications, and unique concrete constructions where the use of load tests rather than conventional design procedures may be necessary to determine suitability.