Strength and deformability of hollow concrete blocks: correlation of block and cylindrical sample test results

ABOUT THE 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.

International Concrete Abstracts Portal

  


Title: Strength and deformability of hollow concrete blocks: correlation of block and cylindrical sample test results

Author(s): C. S. BARBOSA, J.B. HANAI

Publication: IBRACON

Volume: 2

Issue: 1

Appears on pages(s): 85-99

Keywords: structural masonry, concrete block, mechanical properties, strength, deformability.

Date: 3/30/2009

Abstract:
This paper deals with correlations among mechanical properties of hollow blocks and those of concrete used to make them. Concrete hollow blocks and test samples were moulded with plastic consistency concrete, to assure the same material in all cases, in three different levels of strength (nominally 10 N/mm², 20 N/mm² and 30 N/mm²). The mechanical properties and structural behaviour in axial compression and tension tests were determined by standard tests in blocks and cylinders. Stress and strain analyses were made based on concrete’s modulus of elasticity obtained in the sample tests as well as on measured strain in the blocks’ face-shells and webs. A peculiar stress-strain analysis, based on the superposition of effects, provided an estimation of the block load capacity based on its deformations. In addition, a tentative method to preview the block deformability from the concrete mechanical properties is described and tested. This analysis is a part of a broader research that aims to support a detailed structural analysis of blocks, prisms and masonry constructions.


Brazilian Institute of concrete, International Partner Access.

View Resource »