influence of internal curing on concrete nist gov

Influence of Internal Curing on ... - concrete.nist.gov

NISTIR 8076 Influence of Internal Curing on Properties and Performance of Cement-Based Repair Materials Dale P. Bentz Scott Z. Jones Max A. Peltz

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Internal Curing of Concrete NIST

Nov 15, 2019  The Influence of Internal Curing on Basic Creep and Autogenous Shrinkage, in ACI SP-256: Internal Curing of High Performance Concretes: Laboratory and Field Experiences, Eds. D. Bentz and B. Mohr, CD-ROM, 57-70, 2008.

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Published in Materials and Structures ... - concrete.nist.gov

of the influence of internal curing, a technology based on replacing a portion of the aggregates in concrete with a lightweight counterpart, evaluations of resistance to sulfate attack will be based on the existing mortar bar tests [10], as opposed to the tests based on

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Internal Curing: A 2010 State-of-the-Art Review NIST

Feb 09, 2011  This report provides a state-of-the-art review of the subject of internal curing, first addressing its history and theory, and then proceeding to summarize published guidance on implementing internal curing in practice and published research on its influence on the performance properties of concrete. The ongoing exploration of extensions of the ...

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Submitted to Cement and Concrete ... - TSAPPS at NIST

Influence of Internal Curing using Lightweight Aggregates on Interfacial Transition Zone Percolation and Chloride Ingress in Mortars . Dale P. Bentz . Building and Fire Research Laboratory . National Institute of Standards and Technology . 100 Bureau Drive Stop 8615 . Gaithersburg, MD 20899-8615 USA . E-mail: [email protected] Phone: (301)975 ...

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Internal Curing of Concrete (Information Sources)

Villarreal, V. H., Internal Curing - Real World Ready Mix Production and Applications: A Practical Approach to Lightweight Modified Concrete , in ACI SP-256: Internal Curing of High Performance Concretes: Laboratory and Field Experiences, Eds. D. Bentz and B. Mohr, American Concrete Institute, Farmington Hills, MI, 45�56, 2008.

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Influence of Exposure Conditions on ... - concrete.nist.gov

Influence of Exposure Conditions on the Efficacy of Internal Curing Michael Golias1, Dale Bentz2, and Jason Weiss1 1 Purdue University 2 NIST Abstract Internal curing uses pre-wetted fine lightweight aggregate (LWA) to supply cementitious systems with water. This increases the hydration of cement and reduces the influence of self-

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Published in Materials and Structures ... - concrete.nist.gov

of the influence of internal curing, a technology based on replacing a portion of the aggregates in concrete with a lightweight counterpart, evaluations of resistance to sulfate attack will be based on the existing mortar bar tests [10], as opposed to the tests based on

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Submitted to Cement and Concrete ... - TSAPPS at NIST

Influence of Internal Curing using Lightweight Aggregates on Interfacial Transition Zone Percolation and Chloride Ingress in Mortars . Dale P. Bentz . Building and Fire Research Laboratory . National Institute of Standards and Technology . 100 Bureau Drive Stop 8615 . Gaithersburg, MD 20899-8615 USA . E-mail: [email protected] Phone: (301)975 ...

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INTERNAL CURING AND MICROSTRUCTURE OF ... -

[email protected], [email protected] ... During the hydration of the cement paste within the concrete mixture, this internal curing water will be drawn from the LWA into the hydrating paste, maintaining a high ... Direct observation of the influence of internal curing on the microstructure of the

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8. Curing and Autogeneous Shrinkage of Concrete NIST

Nov 15, 2019  8. Curing and Autogeneous Shrinkage of Concrete. This chapter describes experimentally, with some modeling ideas, the autogeneous shrinkage of concrete. Some means of ameliorating this ubiquitous phenomenon in high performance concrete are also discussed. This section discusses experimental results on the use of various means of internal curing ...

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Mixture Proportioning for Internal Curing - concrete.nist.gov

Concrete international / FEBRUARY 2005 35 The concept of internal concrete curing is steadily progressing from the laboratory to field practice.1,2 6 In terminology currently being considered by ACI Committee 308, Curing Concrete, “internal curing refers

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Mixture Proportioning for Internal Curing - NIST

T he concept of internal concrete curing is steadily progressing from the laboratory to field practice.1.2 In terminology currently being considered by ACI Committee 308, Curing Concrete, "internal curing refersto the process by which the hydration of cement occurs because of the availability of additional internal

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References - concrete.nist.gov

References: 1. Mather, B., "Self-Curing Concrete, Why Not?", Concrete International, V. 23, No. 1, 2001, pp. 46-47. 2. Roberts, J., "Internal Curing in Pavements ...

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(PDF) Guide Specification for Internally Curing Concrete

Internal curing (IC) is a practical way of supplying additional curing water throughout the concrete mixture. This water can improve the hydration of cement, reduce autogenous shrinkage, and ...

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(PDF) Mixture Proportioning for Internal Curing

Committee 308, Curing Concrete, “internal curing refers to the process by which the hydration of cement occurs because of the availability of additional internal water

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Internal Curing of Concrete (Information Sources)

Villarreal, V. H., Internal Curing - Real World Ready Mix Production and Applications: A Practical Approach to Lightweight Modified Concrete , in ACI SP-256: Internal Curing of High Performance Concretes: Laboratory and Field Experiences, Eds. D. Bentz and B. Mohr, American Concrete Institute, Farmington Hills, MI, 45�56, 2008.

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Internal Curing - ESCSI

on enhancing high performance concrete through internal curing [4]. More recent studies at Purdue University [5-8] and the National Institute of Standards and Technology (NIST) [9, 10] have indicated that internal curing with pre-wetted fi ne lightweight aggregates positively impacts a variety of aspects of concrete performance

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Additional Concerns - A Methodology for Mixture ... - NIST

This will be especially important for curing at later ages, when the distance the water can travel may become limited to hundreds of micrometers, due to the ever-decreasing permeability of the hydrating cement paste. 6 A more uniform distribution of internal curing water is best achieved by the use of fine (as opposed to coarse) lightweight ...

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Cement Concrete Composites - concrete.nist.gov NIST

into a concrete, especially if the individual ITZ regions are percolated (connected) across the three-dimensional microstructure. In this paper, the substitution of LWA sand for a portion of the normal weight sand to provide internal curing (IC) for a mortar is examined with respect to its influence on ITZ percolation and chloride ingress.

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Internally-cured concrete being cast in a bridge ... - NIST

for concrete with internal curing and for concrete with external curing. A Field Trial in Monroe County Indiana Following up on a substantial amount of laboratory research that has been performed regarding internal curing, several recent bridge decks have been cast using these materials to transition the technology from the lab to the field.

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Internal Curing of High-Performance Blended Cement ... -

for additions of granulated blast-furnace slag.9,10 In this study, the influence of internal curing, supplied via saturated-surface-dry (SSD) lightweight fine aggregates (LWA), on the autogenous deformation and compressive strength development of high-performance blended cement

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Mixture Proportioning for Internal Curing - NIST

T he concept of internal concrete curing is steadily progressing from the laboratory to field practice.1.2 In terminology currently being considered by ACI Committee 308, Curing Concrete, "internal curing refersto the process by which the hydration of cement occurs because of the availability of additional internal

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Curing of high-performance concrete: phase I study

• Develop a more comprehensive understanding of the effects of internal curing temperature, and develop guidelines for curing high-performance concrete based on sound technical knowledge. One of the first curing-related studies in the NIST program established the applicability of the maturity method to high-performance concrete (Carino et al ...

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NISTIR 6295 Curing of High-Performance Concrete: Report of ...

of high-performance concrete (HPC). A separate annotated bibliography (NIST GCR 97-715) is available from the National Institute of Standards and Technology (NIST). The scope of the report is expanded somewhat beyond considering just high-performance concrete to summarize the effects of different curing methods on concrete in general. With ...

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41 Mitigation of autogenous shrinkage in ... - TSAPPS at NIST

Concrete in Australia, 41 (4), 35-39, 2015. Mitigation of autogenous shrinkage in repair mortars via internal curing Dale P. Bentz, Scott Z. Jones, Max A. Peltz, and Paul E. Stutzman Engineering Laboratory, NIST, Gaithersburg, MD 20899-8615 USA Abstract: Repair mortars are being used with increasing frequency to maintain the aging US ...

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Forthcoming Publications by NIST Authors

The goal of internal curing of concrete, via the utilization of saturated lightweight fine aggregates (LWA) for example, is to provide internal reservoirs of water that are readily available to supply the hydrating cement paste with the water needed to maintain saturation within its capillary porosity throughout the first days or weeks of ...

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[PDF] Influence of internal curing using lightweight ...

The microstructure of the interfacial transition zone (ITZ) between cement paste and aggregate depends strongly on the nature of the aggregate, specifically its porosity and water absorption. Lightweight aggregates (LWA) with a porous surface layer have been noted to produce a dense ITZ microstructure that is equivalent to that of the bulk cement paste, as opposed to the more porous ITZ ...

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Internal curing – A suitable method for improving the ...

Sep 30, 2016  Internal curing improved the characteristics of the ITZ in heat-cured concrete, resulting in the formation of an ITZ with a homogeneous distribution and a lower porosity around the LWFA. In conclusion, internal curing is a suitable method of improving the performance of heat-cured concrete.

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Internal curing of pervious concrete using lightweight ...

Feb 10, 2018  Internal curing using super absorbent polymers has proven a successful method for internally curing pervious concrete. This study investigated replacing the small portion of fine aggregate contained in many pervious concretes with prewetted lightweight fine aggregate, typically used for internal curing conventional concrete.

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(PDF) feature Internal Curing Improves Concrete ...

Internal Curing Improves Concrete Performance throughout its Life. By Ryan Henkensiefken and Dale P Bentz. Internal Curing in Concrete. By iftikhar Azim. Development of Internally Cured Concrete for Increased Service Life. By JAVIER CASTRO. INTERNAL CURING - FROM THE LABORATORY TO IMPLEMENTATION.

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REPORT NO. UCBj EERC-83j 23 EARTHQUAKE ENGINEERING ...

reinforced concrete (RIC) structures to severe earthquake ground motions. Some 125 pull-out specimens were tested. Each one of these specimens simulated the confined region of a beam-column joint. Only a short length (five times the bar diameter) of a Grade 60 deformed reinforcing bar was embedded in confined concrete.

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CiteSeerX — INTERNAL CURING AND MICROSTRUCTURE OF

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): research interests include experimental and computer modeling studies of the microstructure and performance of materials. Paul E. Stutzman is a Physical Scientist in the Materials and Construction Research Division at NIST. He received his A.B. in Geology from Hanover College and his M.S. in Geology from Southern ...

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Concrete Laboratory Overview FHWA

Concrete is prepared with a 2 ft 3 pan planetary mixer, a 0.75 ft 3 or 6 ft 3 drum mixer, and a high-shear mixer. Curing and conditioning is done in the curing room, in one of the three temperature-controlled curing tanks which automatically maintain constant water level and temperature, or in a walk-in environmental chamber .

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