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Post-cracking characteristics of hig...

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Post-cracking characteristics of high performance fiber reinforced cementitious composites.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Post-cracking characteristics of high performance fiber reinforced cementitious composites./
Author:	Suwannakarn, Supat W.
Description:	297 p.
Notes:	Advisers: Sherif El-Tawil; Antoine E. Naaman.
Contained By:	Dissertation Abstracts International70-04B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3354189
ISBN:	9781109118438

Post-cracking characteristics of high performance fiber reinforced cementitious composites.
Suwannakarn, Supat W.

Post-cracking characteristics of high performance fiber reinforced cementitious composites. - 297 p.

Advisers: Sherif El-Tawil; Antoine E. Naaman.

Thesis (Ph.D.)--University of Michigan, 2009.

The application of high performance fiber reinforced cement composites (HPFRCC) in structural systems depends primarily on the material's tensile response, which is a direct function of fiber and matrix characteristics, the bond between them, and the fiber content or volume fraction. The objective of this dissertation is to evaluate and model the post-cracking behavior of HPFRCC. In particular, it focused on the influential parameters controlling tensile behavior and the variability associated with them. The key parameters considered include: the stress and strain at first cracking, the stress and strain at maximum post-cracking, the shape of the stress-strain or stress-elongation response, the multiple cracking process, the shape of the resistance curve after crack localization, the energy associated with the multiple cracking process, and the stress versus crack opening response of a single crack. Both steel fibers and polymeric fibers, perceived to have the greatest potential for current commercial applications, are considered. The main variables covered include fiber type (Torex, Hooked, PVA, and Spectra) and fiber volume fraction (ranging from 0.75% to 2.0%). An extensive experimental program is carried out using direct tensile tests and stress-versus crack opening displacement tests on notched tensile prisms. The key experimental results were analysed and modeled using simple prediction equations which, combined with a composite mechanics approach, allowed for predicting schematic simplified stress-strain and stress-displacement response curves for use in structural modeling. The experimental data show that specimens reinforced with Torex fibers performs best, follows by Hooked and Spectra fibers, then PVA fibers. Significant variability in key parameters was observed througout suggesting that variability must be studied further. The new information obtained can be used as input for material models for finite element analysis and can provide greater confidence in using the HPFRC composites in structural applications. It also provides a good foundation to integrate these composites in conventional structural analysis and design.

ISBN: 9781109118438Subjects--Topical Terms:

1018410
Applied Mechanics.

Post-cracking characteristics of high performance fiber reinforced cementitious composites.
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020 $a 9781109118438
035 $a (UMI)AAI3354189
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100 1 $a Suwannakarn, Supat W. $3 1064711
245 1 0 $a Post-cracking characteristics of high performance fiber reinforced cementitious composites.
300 $a 297 p.
500 $a Advisers: Sherif El-Tawil; Antoine E. Naaman.
500 $a Source: Dissertation Abstracts International, Volume: 70-04, Section: B, page: 2455.
502 $a Thesis (Ph.D.)--University of Michigan, 2009.
520 $a The application of high performance fiber reinforced cement composites (HPFRCC) in structural systems depends primarily on the material's tensile response, which is a direct function of fiber and matrix characteristics, the bond between them, and the fiber content or volume fraction. The objective of this dissertation is to evaluate and model the post-cracking behavior of HPFRCC. In particular, it focused on the influential parameters controlling tensile behavior and the variability associated with them. The key parameters considered include: the stress and strain at first cracking, the stress and strain at maximum post-cracking, the shape of the stress-strain or stress-elongation response, the multiple cracking process, the shape of the resistance curve after crack localization, the energy associated with the multiple cracking process, and the stress versus crack opening response of a single crack. Both steel fibers and polymeric fibers, perceived to have the greatest potential for current commercial applications, are considered. The main variables covered include fiber type (Torex, Hooked, PVA, and Spectra) and fiber volume fraction (ranging from 0.75% to 2.0%). An extensive experimental program is carried out using direct tensile tests and stress-versus crack opening displacement tests on notched tensile prisms. The key experimental results were analysed and modeled using simple prediction equations which, combined with a composite mechanics approach, allowed for predicting schematic simplified stress-strain and stress-displacement response curves for use in structural modeling. The experimental data show that specimens reinforced with Torex fibers performs best, follows by Hooked and Spectra fibers, then PVA fibers. Significant variability in key parameters was observed througout suggesting that variability must be studied further. The new information obtained can be used as input for material models for finite element analysis and can provide greater confidence in using the HPFRC composites in structural applications. It also provides a good foundation to integrate these composites in conventional structural analysis and design.
590 $a School code: 0127.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Civil. $3 783781
650 4 $a Engineering, Materials Science. $3 1017759
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690 $a 0543
690 $a 0794
710 2 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 70-04B.
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790 1 0 $a El-Tawil, Sherif, $e advisor
790 1 0 $a Naaman, Antoine E., $e advisor
791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3354189