ACI-SP-185-2000.pdf
《ACI-SP-185-2000.pdf》由会员分享,可在线阅读,更多相关《ACI-SP-185-2000.pdf(256页珍藏版)》请在三一文库上搜索。
1、Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/16/2007 19:21:21 MDTNo reproduction or networking permitted without license from IHS -,-,- M 0bb2949 O552229 C3b 1131 High- Performance Fiber-Reinforce
2、d Concrete in Infras tructural Repair and Retrofit Editors Neven Krstulovic-Opara Ziad Bayasi SP- 185 international” Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/16/2007 19:21:21 MDTNo reproductio
3、n or networking permitted without license from IHS -,-,- W 0hb2949 0552230 256 DISCUSSION of individual papers in this symposium may be submitted in accordance with general requirements of the AC1 Publication Policy to AC1 head- quarters at the address given below. Closing date for submission of dis
4、cussion is May 1, 2000. All discussion along with closing remarks by the authors will be published in the September/October 2000 issue of either AC1 Structu ral Journal or AC1 Materials Journal depending on the subject emphasis of the individual paper. The Institute is not responsible for the statem
5、ents or opinions expressed in its publications. Institute publications are not able to, nor intended to, supplant indi- vidual training, responsibility, or judgment of the user, or the supplier, of the information presented. The papers in this volume have been reviewed under Institute publication pr
6、oce- dures by individuals expert in the subject areas of the papers. Copyright O 2000 AMERICAN CONCRETE INSTITUTE P.O. Box 9094 Farmington Hills, Michigan 48333-9094 All rights reserved including rights of reproduction and use in any form or by any means, including the making of copies by any photo
7、process, or by any electronic or mechanical device, printed or written or oral, or recording for sound or visual reproduction or for use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright proprietors. Printed in the United States of America Ed
8、itorial production: Juliet A. Byington Library of Congress catalog card number: 00-1O0015 Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/16/2007 19:21:21 MDTNo reproduction or networking permitted w
9、ithout license from IHS -,-,- - Obb2Y 0552233 194 PREFACE A rapidly aging and deteriorating civil infrastructure has created one of the major challenges facing the United States and its construction industry today. Since the cost of civil infrastructure constitutes a major portion of the national we
10、alth, the development of long-lasting and cost-effective repair and retrofit solutions is essential for the well-being of the nations economy in the next cen- tury. A promising way of addressing this issue is to use advanced composites such as high-performance fiber-reinforced concretes (HPFRCs), wh
11、ich exhibit features essential for long-lasting and cost-effective repair and retrofit solutions: high tensile strength, high ductility, and high durability. Laboratory studies and field applications clearly show that HPFRC can be used to improve the performance of civil engineering infrastructure i
12、n a cost- effective manner. Due, however, to limited availability of information on: (a) the performance of HPFRC-based infrastructural repair and retrofit, and (b) specific design and construction guidelines, this novel material has not yet been widely used in the field. Therefore, the objective of
13、 this publication is to provide practic- ing engineers and specialists with state-of-the-art information on the mechanical properties and use of HPFRCs in infrastructural repair and retrofit. Although it may be difficult to define a “high-performance” material or struc- ture, the term “high-performa
14、nce fiber-reinforced composites” (HPFRCs) is used herein to define fiber-reinforced concretes (FRCs) that in direct tension exhibit strain hardening and multiple cracking, leading to significantly increased tensile strength, ductility, and energy-absorption capacity. Materials such as slurry infil-
15、trated fiber concrete (SIFCON) and slurry infiltrated mat concrete (SIMCON) fit this definition. However, as demonstrated in some papers in this publication, “high-performance” infrastructural repair or retrofit can also be achieved using “conventional” FRCs that do not exhibit pronounced strain har
16、dening. “High-per- formance” repair and retrofit with “conventional” FRC are thus also addressed in this publication. Finally, FRCs and HPFRCs are not the only advanced compos- ites that can be successfully used for durable and cost-effective infrastructural repair or retrofit. Other advanced compos
17、ites, such as fiber-reinforced polymers, have also been used for this purpose. Therefore, while the main focus of this pub- lication is on the use of advanced cement-based composites, it also includes a review paper on the use of fiber-reinforced polymer composites in infrastructural repair and retr
18、ofit. Editors Neven Krstulovic-Opara Ziad Bayasi iii Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/16/2007 19:21:21 MDTNo reproduction or networking permitted without license from IHS -,-,- Obb2949
19、 0552232 020 I DEDICATION James P. Romualdi 1929- 1993 This symposium volume is dedicated to Dr. James P. Romuaidi, Professor of Civil Engineering, Carnegie Mellon University, for his many contributions to the research, development, and application of steel fiber reinforcement concrete and ferroceme
20、nt. Dr. Romualdi was an educator, researcher, consulting engineer, and entrepreneur. Nearly all of his adult years were connected in some way to Carn- egie Mellon University: he received his BS, MS, and PhD from Carnegie Institute of Technology, now Carnegie Mellon University, and joined the faculty
21、 of the Department of Civil Engineering, Carnegie Mellon University in 1955, where he was an active member until his death. He was also a member of several profes- sional societies, including ACI, ASCE, NSPE, ASTM, and ASEE. Dr. Romualdis idea of applying linear elastic fracture mechanics to explain
22、 the mechanical properties of concrete with closely spaced steel reinforcement, developed in the late 1950s and early 1960s, was the beginning of the current worldwide interest in and application of a great array of fiber-reinforced cementi- tious materials. Like many developments in mechanics, Dr.
23、Romualdis crack arrest concept grew out of his earlier work on the effect of stiffeners and stiffener rivets on the growth and arrest of crack in large, stressed aluminum plates. He recognized the similarity between the arrest mechanism in a cracked and stiff- ened aluminum plate with the crack arre
24、st mechanism in concrete made with closely spaced reinforcement. His concept of crack arrest by low volume of closely spaced, steel fibers incorporated in concrete was the basis of his patent for steel fiber-reinforced concrete. This concept also provided an explanation for the mechanical properties
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ACI SP 185 2000
链接地址:https://www.31doc.com/p-3728340.html