ACI 308.1 PDF

ACI Specification for Curing Concrete. Published By: American Concrete Institute (ACI); Page Count: 11; ANSI Approved: No; DoD Adopted: No. Find the most up-to-date version of ACI at Engineering Buy ACI SPECIFICATION FOR CURING CONCRETE from SAI Global.

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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.

Figure 1 above shows the percentage of strength gain associated with various curing methods. In other words, the semi-evaporable and non-evaporable water continues to be made available for hydration until it is consumed or an equilibrium state is achieved when SCP products are used. Curing August 27, – 4: Any applicable errata are included with individual documents at the time of purchase.

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Guide for Specifying Underground Shotcrete. Until those standards are available, and Ac ASTM C membrane-forming curing compounds were developed as a solution to the need for a time-saving alternative to water ponding.

This specification has default settings that may or may not be applicable to a specific project. Because SCP products penetrate into the concrete, they do not form a surface membrane. February 26, – 1: For a listing of and access to all product errata, visit the Errata page. Additionally, SCP products become a permanent part of the concrete while membranes and water ponding are temporary.

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308.1-11 Specification for Curing Concrete

The action works in the other direction as well, holding in water that would normally evaporate at early ages. These alternative methods are not necessarily equal in effectiveness, cost, effect on project schedule, or impact on other aspects of the project.

Concrete Cracking October 30, – Figure 4 shows the performance of treated concrete in water permeability testing in a hydrostatic pressure environment, another reason curing is often called out. Compressive Wci as a Function of Age for a Variety of Curing Conditions ACI R According to ACI R, when determining the duration of curing, consideration should be given to the concrete properties that are desired in addition to compressive strength development.

The reaction products formed fill capillaries and shut down liquid water transmission. This action makes SCP products an effective waterproofing 308.1, even under hydrostatic pressure.

SCP Tech Brief: Concrete Curing – Spray-Lock Concrete Protection

The appropriate duration of curing will depend on the property that is the slowest to develop. This document provides requirements for alternative wci for curing concrete. Compressive strength development is the primary reason curing of concrete is required, and SCP products help achieve even better performance that moist-cured concrete, long held as the gold standard of curing concrete.

Errata are not included for collections or sets of documents such as the ACI Collection. An important consideration when evaluating products for use with concrete is that ASTM develops standards to generate performance numbers while ACI writes the guides and specifications that are used to put the numbers generated into practice. While membranes degrade over time, and water ponding methods cannot be continued indefinitely, the use of SCP products provides a continuous curing environment.

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These items are not eligible for return. July 30, – 2: The xci and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. Figure 3 below shows the performance of treated concrete tested for drying shrinkage, another important reason curing is required, demonstrating improvements over moist-cured control samples.

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. According to ACI R, when determining the duration of curing, consideration should be given to the concrete properties that are desired in addition to compressive strength development.

ACI 308.1.pdf

Concrete — Drying vs. The objective of curing is to allow the concrete to meet performance parameters; SCP products produce those performance parameters at a rate equal to or better than moist curing. At least two ASTM C09 subcommittees are currently working on standards to better evaluate the performance of colloidal 3081.

Figure 2 shows the performance of concrete treated with SCP products versus air and moist cured concrete.