FORMAT
BOOKS
PACKAGES
EDITION
PUBLISHER
CONTENT TYPE
Act
Admin Code
Announcements
Bill
Book
CADD File
CAN
CEU
Charter
Checklist
City Code
Code
Commentary
Comprehensive Plan
Conference Paper
County Code
Course
DHS Documents
Document
Errata
Executive Regulation
Federal Guideline
Firm Content
Guideline
Handbook
Interpretation
Journal
Land Use and Development
Law
Legislative Rule
Local Amendment
Local Code
Local Document
Local Regulation
Local Standards
Manual
Model Code
Model Standard
Notice
Ordinance
Other
Paperback
PASS
Periodicals
PIN
Plan
Policy
Product
Program
Provisions
Requirements
Revisions
Rules & Regulations
Standards
State Amendment
State Code
State Manual
State Plan
State Standards
Statute
Study Guide
Supplement
Technical Bulletin
All
|
Content DescriptionThis report summarizes information regarding the analysis of concrete systems subjected to rapid loading. Engineers will obtain an overview of the subject matter along with recommended approaches for analysis and selection of material properties. Researchers will obtain a concise source of information from leading authorities in the field conducting research and applying these concepts in practice. This report describes how, as strain rates increase above 10 –4 to 10 –3 s –1 , concrete in tension and compression becomes stronger and stiffer, with less prepeak crack growth and less ductile behavior in the postpeak region. The rate dependence of bond is shown to be due to local crushing around deformations of the bar and to have the same relationship to rate as compressive strength. The practical effect of this local crushing is to concentrate strains in a small number of cracks, thus lowering the overall ductility of reinforced members. Finally, it is concluded that computational models of postpeak behavior under either dynamic or static load should use a localization limiter so that strain softening into arbitrarily small regions is prevented. The models should also properly pose the equations of motion; one appropriate way to do this is to represent softening through rate dependence, such as viscoplasticity. Keywords: computational modeling; concrete-reinforcement bond; cracking; fracture energy; fracture mechanics; fracture toughness; size effect; strain rate; stress-intensity factor; stress rate.This book also exists in the following packages...About ACIFounded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational & training programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete. ACI has over 95 chapters, 110 student chapters, and nearly 20,000 members spanning over 120 countries. |
GROUPS
|