ACI 308.1M-11

This specification is a reference specification that the Architect/Engineer
can make applicable to any construction project by citing it in the Project
Specification. The Architect/Engineer uses and supplements the provisions of
this reference specification as needed by designating or specifying individual
project requirements to which provisions of this specification apply.

This document provides requirements for alternative methods for curing
concrete. These alternative methods are not necessarily equal in
effectiveness, cost, effect on project schedule, or impact on other aspects
of the project. To use this specification, the Architect/Engineer must not
only include this document by reference in the Project Specification, but
must also identify the concrete elements that are to be cured, and must
choose the method to cure those elements. This specification has default
settings that may or may not be applicable to a specific project. The
Architect/Engineer is to use the Checklists included in this specification to
customize the specification to a specific project. Checklists are provided in
this document to guide the Architect/Engineer through these selection
processes, and the selections must be included in the Project Specification.
Alternatively, the Architect/Engineer may allow the Contractor the option
of using one or more of a number of permissible curing methods, subject to
review and approval. Further, the Architect/Engineer must determine
whether deliberate curing efforts are to be terminated after a predetermined
time has elapsed, or only after specified concrete properties have developed.
When deliberate efforts to cure the concrete are to be terminated only when
specified concrete properties have developed, the Architect/Engineer must
also select the test method used to measure those properties.

This specification addresses curing methods applied after placement of
concrete and does not apply to internal curing (use of saturated lightweight
aggregate or other materials to provide supplemental water) or to
accelerated curing (heat curing).

The materials, processes, quality control measures, and inspections
described in this document should be tested, monitored, or performed as
applicable only by individuals holding the appropriate ACI certifications
or equivalent.