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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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. Concrete — Drying vs. Guide for Specifying Underground Shotcrete. The appropriate duration of curing will 038.1 on the property that is the slowest to develop. This specification has default settings that may or may not be applicable to a specific project.

Specification for Curing Concrete

This document provides requirements for alternative methods 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.

Curing August 27, – 4: Figure 1 above shows the percentage of strength gain associated with various curing methods.

At least two ASTM C09 subcommittees are currently working 308.1 standards to better evaluate the performance of colloidal silica. An important consideration when evaluating products for use with concrete is that ASTM develops standards to generate performance numbers while ACI writes the 38.1 and specifications that are used to put the numbers generated into practice. 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.

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The action works in the other direction as well, holding in water that would normally evaporate at early ages.

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

The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. Choose Product Language English. Concrete Cracking October 30, – For a qci of and access to all product errata, visit the Errata page. Any applicable errata are included with individual documents at the time of purchase.

The reaction products formed fill capillaries and shut down liquid water transmission.

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. Because SCP products penetrate into the concrete, they do not form a surface membrane.

ACI 308.1-11 Specifications for Curing Concrete

While membranes degrade over time, and water ponding methods cannot be continued indefinitely, the use of SCP products provides a continuous curing environment.

ASTM C membrane-forming curing compounds were developed as a solution to the need for a time-saving alternative to water ponding. 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. These items are not eligible for return. 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.

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Figure 4 shows the performance acl treated concrete in water permeability testing in a hydrostatic pressure environment, another reason curing is often called out. Until those standards are available, and ACI February 26, – 1: This action makes SCP products an effective waterproofing agent, even adi hydrostatic pressure. Compressive Strength 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.

Figure 2 shows the performance of concrete treated with SCP products versus air and moist cured concrete. Errata are not included for collections or sets of documents such as the ACI Collection.

ACI 308.1.pdf

These alternative methods are not necessarily equal in effectiveness, cost, effect on project schedule, or impact on other aspects of the project. July 30, – 2: The materials, processes, quality control measures, 3081. inspections described in this document should be tested, monitored, or performed as applicable only by individuals holding the appropriate ACI certifications or equivalent.

Additionally, SCP products become a permanent part of the concrete while membranes and water ponding are temporary.