Effects of plastering and glass fibre reinforced polymer (gfrp) on concrete masonry prism strength capacity
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Date
2017-06
Authors
Mohammad Fikri Bin Ismail
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Abstract
Masonry based construction has long been used in various types of structures,
houses, public and private buildings and also historical monuments. The loading
capacity of masonry especially for the load-bearing wall can be increased by various
methods available. In order to increase the resilience of a masonry structure, methods
that can be used are plastering and strengthening. In this research, four types of
concrete masonry prisms have been introduced to compare its behaviour against
loading. Those specimens are classified as controlled specimen without any plaster,
one-sided plastered, two-sided plastered, and specimen strengthened by Glass Fibre
Reinforced Polymer (GFRP) strip in a vertical orientation. Characterization tests such
as absorption test and compressive strength test were conducted on concrete masonry
unit (CMU) to determine its characteristics before mortar mix are applied for bonding.
Compressive test and flexural test were conducted to characterize the mortar mix used.
A total of 12 prisms specimens with four different conditions was produced for the
compressive strength test. Each condition has a total of three specimens each to
compare their outcomes. The test results showed that two-sided plaster specimen have
the highest average loading capacity of 209 kN. In this study, all conditions used the
same method during the production process and proved that both sides plaster can
improve the ability of the masonry structure to resists high loading.