Share

Low Shrinkage Mix Designs to Reduce Early Cracking of Concrete Bridge Decks

2020 Concrete
Download Low Shrinkage Mix Designs to Reduce Early Cracking of Concrete Bridge Decks PDF Online Free

Author :
Release : 2020
Genre : Concrete
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Low Shrinkage Mix Designs to Reduce Early Cracking of Concrete Bridge Decks by : Eric Simonton

Download or read book Low Shrinkage Mix Designs to Reduce Early Cracking of Concrete Bridge Decks written by Eric Simonton. This book was released on 2020. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Shrinkage cracking is reducing the service life of concrete bridge decks in South Dakota due to premature deterioration. In this study, the effects of varying concrete mix design parameters on autogenous and drying shrinkage was observed. Tested mix design changes include aggregate type (limestone and quartzite) and gradations (ASTM C33, Tarantula Curve, and 0.45 Power Curve), supplementary cementitious materials (fly ash), cementitious content, water-to-cementitious ratio, internal curing using saturated lightweight aggregates (expanded shale), and shrinkage reducing admixtures. These changes were evaluated for their effect on the shrinkage of paste, mortar, and concrete as measured by ASTM C1698 (autogenous shrinkage) and ASTM C157 (drying shrinkage). Fresh property tests, compressive strength, and electrical resistivity measurements were performed on each mix as well. A survey of state Department of Transportations revealed the current state-of-the-art practices on shrinkage reduction in bridge decks, including the use of admixtures, internal curing agents, and external curing methods.

Evaluation of Concrete Mix Designs to Mitigate Early-age Shrinkage Cracking in Bridge Decks

2009 Concrete
Download Evaluation of Concrete Mix Designs to Mitigate Early-age Shrinkage Cracking in Bridge Decks PDF Online Free

Author :
Release : 2009
Genre : Concrete
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Evaluation of Concrete Mix Designs to Mitigate Early-age Shrinkage Cracking in Bridge Decks by : Jianmin Zhuang

Download or read book Evaluation of Concrete Mix Designs to Mitigate Early-age Shrinkage Cracking in Bridge Decks written by Jianmin Zhuang. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt:

Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks

2010 Bridges
Download Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks PDF Online Free

Author :
Release : 2010
Genre : Bridges
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks by : Pizhong Qiao (Civil engineer)

Download or read book Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks written by Pizhong Qiao (Civil engineer). This book was released on 2010. Available in PDF, EPUB and Kindle. Book excerpt: Early-age shrinkage cracking has been observed in many concrete bridge decks in Washington State and elsewhere around the U.S. The cracking increases the effects of freeze-thaw damage, spalling, and corrosion of steel reinforcement, thus resulting in premature deterioration and structural deficiency of the bridges. In this study, the main causes of the early-age cracking in the decks are identified, and concrete mix designs as a strategy to prevent or minimize the shrinkage cracking are evaluated. Different sources (eastern and western Washington) and sizes of aggregates are considered, and the effects of paste content, cementitious materials (cement, fly ash, silica fume, slag), and shrinkage reducing admixture (SRA) are evaluated. A series of fresh, mechanical and shrinkage property tests were performed for each concrete mix. The outcomes of this study identify optimum concrete mix designs as appropriate mitigation strategies to reduce or eliminate early-age shrinkage cracking and thus help minimize shrinkage cracking in the concrete bridge decks, potentially leading to longer service life.

Early Age Shrinkage and Cracking of Nevada Concrete Bridge Decks

2001 Concrete
Download Early Age Shrinkage and Cracking of Nevada Concrete Bridge Decks PDF Online Free

Author :
Release : 2001
Genre : Concrete
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Early Age Shrinkage and Cracking of Nevada Concrete Bridge Decks by : Heinere Howard Ah-Sha

Download or read book Early Age Shrinkage and Cracking of Nevada Concrete Bridge Decks written by Heinere Howard Ah-Sha. This book was released on 2001. Available in PDF, EPUB and Kindle. Book excerpt:

Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks

2010 Bridges
Download Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks PDF Online Free

Author :
Release : 2010
Genre : Bridges
Kind : eBook
Book Rating : /5 ( reviews)

GET EBOOK


Book Synopsis Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks by : Pizhong Qiao

Download or read book Mitigation Strategies for Early-age Shrinkage Cracking in Bridge Decks written by Pizhong Qiao. This book was released on 2010. Available in PDF, EPUB and Kindle. Book excerpt: Early-age shrinkage cracking has been observed in many concrete bridge decks in Washington State and elsewhere around the U.S. The cracking increases the effects of freeze-thaw damage, spalling, and corrosion of steel reinforcement, thus resulting in premature deterioration and structural deficiency of the bridges. In this study, the main causes of the early-age cracking in the decks are identified, and concrete mix designs as a strategy to prevent or minimize the shrinkage cracking are evaluated. Different sources (eastern and western Washington) and sizes of aggregates are considered, and the effects of paste content, cementitious materials (cement, fly ash, silica fume, slag), and shrinkage reducing admixture (SRA) are evaluated. A series of fresh, mechanical and shrinkage property tests were performed for each concrete mix. The outcomes of this study identify optimum concrete mix designs as appropriate mitigation strategies to reduce or eliminate early-age shrinkage cracking and thus help minimize shrinkage cracking in the concrete bridge decks, potentially leading to longer service life.

You may also like...