Investigation of the Behavior of Reinforced Plastic Columns with Concrete Core

by Saeed Daniali, Lamar Univ, Beaumont, United States,

Document Type: Proceeding Paper

Part of: Materials: Performance and Prevention of Deficiencies and Failures


This paper describes an experimental investigation into the behavior of reinforced plastic columns with tubular (hollow) sections. The columns were pultruded and had a cross-section which consisted of a square tubing core and eight equal flanges. The height of the columns varied from 8 ft to 12 ft corresponding to slenderness ratios from 27 to 41. In order to improve the lateral stability of the columns as well as increase their compression stiffness and their load carrying capacity, the cores of the columns were filled with plain concrete. A total of six columns with concrete core and three without concrete were tested. The test results indicate that the columns filled with concrete carried 11% to 50% greater axial loads than similar columns with empty cores. Also, under the same amount of axial load, columns without concrete core deformed up to 100% more than those column with concrete cores.

Subject Headings: Reinforced concrete | Concrete columns | Structural behavior | Plastics | Synthetic materials | Cross sections | Load bearing capacity | Load tests

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