Comparative study on the properties of three hydraulic lime mortar systems: Natural hydraulic lime mortar, cement-aerial lime-based mortar and slag-aerial lime-based mortar

In this paper, the effect of several brick and mortar mechanical and microstructural parameters on the maximum debonding force of the same glass fiber reinforced polymer (GFRP), applied on different bricks and on corresponding masonry panels, was investigated. GFRP sheets were bonded by epoxy resin to four different types of solid fired-clay brick and four types of masonry panels, manufactured using the same bricks and a natural hydraulic lime mortar. The reinforced specimens were subjected to bond tests to evaluate the maximum debonding force. Bricks and mortar were characterized in terms of compressive strength (in the case of bricks, along two different orthogonal directions), surface roughness and pore size distribution. Based on the results of the study, alongside brick mechanical properties in different directions, also brick microstructural parameters seem to play a very important role, which should be taken into account for fully explaining the experimental results.

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Confinement of Clay Masonry Columns with SRG

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.747.350 ◽

2017 ◽

Vol 747 ◽

pp. 350-357 ◽

Cited By ~ 15

Author(s):

Lesley H. Sneed ◽

Christian Carloni ◽

Giulia Baietti ◽

Giacomo Fraioli

Keyword(s):

Cross Section ◽

Compressive Load ◽

Load Test ◽

Steel Fibers ◽

Load Bearing Capacity ◽

Hydraulic Lime ◽

Lime Mortar ◽

Natural Hydraulic Lime ◽

Test Parameters ◽

Hydraulic Lime Mortar

In this study, the behavior of clay masonry columns confined by steel reinforced grout (SRG) composite with a natural hydraulic lime mortar is investigated. An experimental study was carried out to understand the behavior of masonry prisms with a square cross-section confined by SRG composite jackets subjected to a monotonic concentric compressive load. Test parameters considered in this study are the density of steel fibers and column corner radius. The effectiveness of the confinement is studied in terms of load-bearing capacity with respect to unconfined columns.

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Evaluation of Water Permeability in Fibre Reinforced Hydraulic Lime Mortar Intended for Conservation

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.711.630 ◽

2016 ◽

Vol 711 ◽

pp. 630-637

Author(s):

Vivek Bindiganavile ◽

Md Toihidul Islam ◽

Narayana Suresh

Keyword(s):

Portland Cement ◽

Water Permeability ◽

Permeability Coefficient ◽

Mechanical Performance ◽

High Water ◽

Plastic State ◽

Hydraulic Lime ◽

Steady State Condition ◽

Lime Mortar ◽

Hydraulic Lime Mortar

Much of the existing water infrastructure across the world was constructed using masonry in the last 200 years and many of these structures were built with pre-Portland cement binders. Although these mortars exhibit good workability and high water retention in the plastic state, the water tightness deteriorates over the years resulting in a pressing need for suitable repair materials. The addition of polypropylene micorfibre in cement-based systems was found to be effective in reducing water permeability. But the effect of polymeric fibres on the permeability coefficient of hydraulic lime mortar (HLM) is unknown. Therefore, this paper focuses on measuring water permeability in fibre reinforced HLM. Besides, this study examined the application of nanolime onto the aforementioned mortars and its effect on their water permeability. Accordingly, a permeability cell was setup to monitor the onset of the steady state condition in fluid flow. Companion data was generated for the mechanical performance of these mortars. The results show that in hydraulic lime mortar, there is likely an optimal fibre dosage in order to reduce the permeability coefficient. Unlike with Portland cement mortar, this dosage is significantly lower. As well, applying nanolime was most beneficial in limiting water permeability in the natural hydraulic lime mortars.

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