Committee Chair

Owino, Joseph O.; Byard, Benjamin

Committee Member

Fomunung, Ignatius; Onyango, Mbakisya A.; Alp, Neslihan

Department

Dept. of Civil and Chemical Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

Self-consolidating concrete (SCC) is a concrete technology that is growing in popularity with the precast/prestressed industry and contractors. SCC increases the ease of concrete placement as well as reduces overall cost by requiring less labor and time for a concrete placement. This study is part of the proposed project by Tennessee Department of Transportation (TDOT) carried out by University of Tennessee at Chattanooga (UTC) to develop four new SCC mixtures (two Class P-SCC (precast) and two Class A-SCC (general use), and insure they meet the minimum strength and durability requirement for TDOT Class P and Class A mixtures. The objectives of the study presented in this thesis are to analyze a survey of state Departments of Transportation SCC specifications and requirements and investigate the effect of fly ash class and aggregate size and shape on fresh properties of Class A-SCC. In addition, investigate the relationship between Visual stability index (VSI) and fresh segregation of SCC. Finally, recommend the specifications of fresh performance requirements for the Class A-SCC that the Tennessee Department of Transportation (TDOT) should apply to establish SCC stability and flowability during the production of general concrete elements.

Acknowledgments

All praise is to my God ALLAH for giving me the health, opportunity, patience, and knowledge to complete this thesis with success. May the peace and blessings of Allah be upon Prophet Mohammed. I am very grateful to the moral guidance and prayers of my blessed dear parents, through whom God made me climb the ladder of success, the immense support of my blessed fiancé, who maintained her loving care, prayers, and bearing great patience during my graduate studies in USA faraway from Sudan. Acknowledgement is due to University of Tennessee at Chattanooga - Civil Engineering Department for the support given to this study through its excellent facilities and equipment and for providing me the great opportunity to pursue my Master degree with financial support. I acknowledge, with deep gratitude and appreciation, the encouragement, remarkable assistance and continuous support given to me by my thesis advisor, Dr. Joseph Owino. I am also very grateful to his personal involvement and assistant during all stages of my mixing process in the laboratory. I’m deeply indebted and grateful to my co-advisor Dr. Benjamin Byard for his remarkable assistance and big contribution to my knowledge, working with him was an opportunity of great learning and experience. He didn’t hesitate to provide me with the necessary documents and references. The thesis would be a mess, if not for his immense guidance, support, reviewing, and editing. I also acknowledge and appreciate the untiring effort of the laboratory director Mr. Brent Rollins, who was working very hard to insure all the required materials and equipment are available for my study. I’m also very grateful for his assistant, technical support and suggestions during this research. Working with him gave me a great opportunity of learning and experience the concrete testing and its equipment. Thereafter, I would like to thank the committee members Dr. Ignatius Fomunung and Dr. Mbakisya A.Onyango for their guidance and support. Finally, I have to thank my friends, colleagues, and roommates, Mohammed (Kalafalla), Daniel, Walied, Eyad, Hythm, Musab, Mazin and Mogtaba from Peoria, and Abdelkareem badry for their help and assistance during my mixing process.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

8-2014

Subject

Self-consolidating concrete -- Testing

Keyword

Self conslidating Concrete; Fresh segregation; Fresh Properties;Fly ash Class C and F; State DOT survey;aggregate sizes

Document Type

Masters theses

Extent

xiv, 97 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by-nc-nd/3.0/

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