In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational 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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Compressive behavior of concrete actively confined by metal strips, part B: analysis
Author(s): Hasan Moghaadam, Maysam Samadi, Kypros Pilakoutas
Appears on pages(s): 1383-1396
Keywords: Confinement model, Nonlinear finite element analysis, Active confinment
Abstract:This paper presents analytical part of an investigation on the application of prestressed strips for concrete confinement. In this paper, an analytical model is proposed to predict the compressive stress–strain curve of strapped concrete as a function of the confinement level. The model was calibrated based on the experimental data of compressive tests which were described in part A of this paper. Various parameters are considered in the proposed model including volumetric ratio, yield strength and ultimate strain of confining material, shape of cross section, strength of plain concrete. Three key points were defined on the stress–stress curve of strapped concrete columns and applied in model definition including critical, yield and ultimate points. The model showed good capability in predicting the compressive stress–strain curve of tested strapped concrete specimens. The model is also compared to some of the conventional confinement models in prediction of the strength gained by post-tensioned strips. In addition, a plasticity model was applied in the nonlinear finite element analysis of prismatic and cylindrical tested specimens with various levels of confinement. It is shown that these models are able to predict the experimental results, reasonably.
International union of laboratories and experts in construction materials, systems and structures, International Partner Access.
View Resource »