Effect of Natural Polymers from Aegle Marmelos on the Characteristics of Hydraulic Lime Mortar

Author(s): R. Ravi1, S. Thirumalini2 and Khalid Ahmed Gour1
Paper category: Proceedings
Book title: Proceedings of the 71st RILEM Annual Week & ICACMS 2017,Chennai,India, 3rd -8th September 2017
Editor(s): Manu Santhanam
Ravindra Gettu
Radhakrishna G. Pillai
Sunitha K. Nayar
ISBN: 978-2-35158-196-4
ISBN: 978-2-35158-190-2 (Set)
e-ISBN: 978-2-35158-191-9:
Publisher: Published by RILEM Publications S.A.R.L.
Publication year: 2017
Pages: 624-633
Total Pages: 10
Language : English

Abstract: The tradition of using lime as a binder has been in practice over the centuries and is cited in
the architectural feats of all kinds of civilizations. Indian heritage construction has the
tradition of mixing natural organics as admixtures into the lime mortar mixture. The extract
from the fruit pulp of Aegle Marmelos, a sacred Indian tree, has been tested as admixture in
varying concentrations into lime mortar mix. The admixture is rich in carbohydrates and
proteins and also serves as a moisturizing agent. Fresh state properties, mechanical
properties, physical characteristics of admixture modified mortars were determined.
Morphological analysis using SEM/EDX, mineralogical analysis using XRD and organic
analysis adopting FT-IR have been done to validate the results of mechanical and physical
tests. Capillary water and salt absorption by suction were measured as an indicator of
durability properties. The admixture modified mortar has reduced the compressive strength
marginally but limits the water absorption drastically. It also limits the capillary rise of water
and salt intrusion through the hydrophobic nature. Carbohydrates and proteins in the plant
extract interacted with the calcium hydroxide of lime and forms complexes that modified the
characteristics of lime mortar

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00