Title: Shrinkage and creep behaviour of thin layered mortared masonry

Authors: Julian Thamboo; Jiffry Mohamed

Addresses: Department of Civil Engineering, South Eastern University of Sri Lanka, Oluvil 32360, Sri Lanka ' Department of Civil Engineering, South Eastern University of Sri Lanka, Oluvil 32360, Sri Lanka

Abstract: Thin layer mortared masonry (TLMM) system is one of the alternatives to the traditional masonries to accelerate the wall construction. The creep and shrinkage deformation of the masonry can be minimised by adopting TLMM construction, where thin layer (0.5 mm to 3 mm) and stronger mortars (>10 MPa) can be used. Subsequently, a comprehensive experimental campaign was implemented to investigate the shrinkage and creep shortening characteristics of TLMM. The influence of: 1) masonry type (clay and concrete); 2) prestress levels (10%, 20 and 30%); 3) age of loading (3 and 7 days) on the TLMM shrinkage and creep characteristics were examined over 300 days. The creep coefficients obtained for the clay and concrete TLMM prisms range from 0.37-1.10 and 0.42-1.38, respectively. Using the experimental data, empirical time dependent formulations to determine the evolutions of shrinkage and creep characteristics of TLMM were established. Finally, shrinkage and creep parameters obtained in the study are compared with the data given in literature.

Keywords: thin layer mortared masonry; TLMM; creep; shrinkage compressive strength; mortar; rheological models.

DOI: 10.1504/IJMRI.2024.135226

International Journal of Masonry Research and Innovation, 2024 Vol.9 No.1/2, pp.157 - 175

Received: 19 Jan 2022
Accepted: 25 Apr 2022
Published online: 03 Dec 2023 *

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