ACI 308.1 PDF
September 20, 2019 | by admin
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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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. 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.
Choose Product 038.1 English. Guide for Specifying Underground Shotcrete.
ACI Specifications for Curing Concrete by ACI Committee
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.
Any applicable errata are included with individual documents at the time of purchase. 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. ASTM C membrane-forming curing compounds were developed as a solution to the need for a 3081 alternative to water ponding.
Figure 1 above shows cai percentage of strength gain associated with various curing methods.
Until those standards are available, and ACI Concrete Cracking October 30, – While membranes degrade over time, wci water ponding methods cannot be continued indefinitely, the use of SCP products provides a continuous curing environment.
The full and complete returned product will be accepted if returned within 60 days of receipt and in salable condition. For a listing of and access to all product errata, visit the Errata page.
The action works in the other direction as well, holding in water that would normally evaporate at early ages. Figure 2 shows the performance of concrete treated with SCP products versus air and moist cured concrete.
The appropriate duration of curing will depend on the property that is the slowest to develop.
SCP Tech Brief: Concrete Curing – Spray-Lock Concrete Protection
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. Figure 4 shows the performance of treated concrete in water permeability testing in a hydrostatic pressure environment, another reason curing is often called out.
This document provides requirements for alternative methods for curing concrete. This specification addresses curing methods applied after placement of concrete and does not 308.1 to internal curing use of saturated lightweight aggregate or other materials to provide supplemental water or to accelerated curing heat curing.
Because SCP products penetrate into the concrete, they do not form a surface membrane.
These items are not eligible for return. These alternative methods are not necessarily equal in effectiveness, cost, effect on project schedule, or impact on other aspects of the project. Additionally, SCP products become a permanent part of the concrete while membranes and water ponding are temporary.
This specification has default settings that may or may not be applicable to a specific project. The materials, processes, quality control measures, and acu described in this document should 308.11 tested, monitored, or performed as applicable only by individuals holding the appropriate ACI certifications or equivalent.
July 30, – 2: Curing August 27, – 4: Errata are not included for collections or sets of documents such as the ACI Collection. The reaction products formed fill capillaries and shut down liquid water transmission.
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.
ACI 308.1-11 Specifications for Curing Concrete
February 26, – 1: This action makes SCP products an effective waterproofing agent, even under hydrostatic pressure. 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.
Concrete — Drying vs. At least two ASTM C09 subcommittees are currently working on standards to better evaluate the performance of colloidal silica.