Early Age Shrinkage and Cracking of Nevada Concrete Bridge Decks

Ah-Sha, H. H.; Sanders, D. H.; Salid Salidi, M.; University of Nevada, Reno. Civil Engineering

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Early Age Shrinkage and Cracking of Nevada Concrete Bridge Decks

2001-10-01
By Ah-Sha, H. H. ; Sanders, D. H. ; Salid Salidi, M.

[PDF-4.49 MB]

English

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Details:

Creators:

Ah-Sha, H. H. ; Sanders, D. H. ; Salid Salidi, M.

Ah-Sha, H. H. ; Sanders, D. H. ; Salid Salidi, M. Less -
Corporate Creators:

University of Nevada, Reno. Civil Engineering
Corporate Contributors:

Nevada. Dept. of Transportation
Subject/TRT Terms:

[+]

Additives Admixtures Aggregates Air Voids Bridge Decks Cements Chlorides Compressive Strength Concrete Durability Cracking(Fracturing) Laboratory Tests Nevada Performance Evaluation Research Projects Shrinkage Shrinkage Reducing Admixtures(SRA)
Publication/ Report Number:

RDT01-010,
Resource Type:

Tech Report
Geographical Coverage:

Nevada ; United States

Nevada ; United States Less -
TRIS Online Accession Number:

00921498
Edition:

July 1999 – March 2001
Corporate Publisher:

Nevada. Dept. of Transportation
Abstract:

The shrinkage and cracking performance of concrete bridge decks at very early age must be minimized in order to provide durable concrete. The main objective of this research project is to develop shrinkage-compensated concrete for Nevada and recommend measures, which might be used to engineer concrete possessing excellent shrinkage behavior as well as precautions that should be taken during construction to minimize ambient effects. To accomplish this objective, a series of concrete mix designs incorporating the usage of commercially available shrinkage reducing admixtures (SRA) and shrinkage compensating cement or additive (SCC/SCA) were developed and evaluated for their suitability to be used in Nevada bridge decks. In this research program, a total of 27 mix designs were prepared using the SRA, the SCC/SCA, fly ash, and various combinations of these admixtures. Laboratory testing based on several standard and recommended procedures was performed to evaluate the performance of each trial batch. The test program consisted of compressive strength, drying shrinkage, modulus of rupture, chloride ion penetration, cracking tendency, temperature evolution or heat of hydration, and the hardened air-void system. Results of the experimental program reveal that both the SRA and the SCC/SCA have a significant impact on the early age shrinkage and cracking behavior and performance of concrete, therefore its durability. In order to extract full benefits from these admixtures, NDOT should adopt a shrinkage performance based concrete.
Format:

PDF
Funding:

P441-99-803
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:66494a87113e532a4144423d2c17268d046f5e7155b8fd8f1096ab4e960949e9
Download URL:

https://rosap.ntl.bts.gov/view/dot/40825/dot_40825_DS1.pdf
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Early Age Shrinkage and Cracking of Nevada Concrete Bridge Decks

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