| dc.description.abstract | In last few years, scientist and researchers are working to find the best solution
for integrated reinforcement techniques to achieve integrated (Structural and
Thermal) upgrading or retrofitting of masonry walls using Textile Reinforcement
Mortar (TRM)-system. Majority of masonry buildings are constructed without
following seismic and thermal standards; therefore, they are vulnerable to natural
disaster (earthquake) and mostly energy inefficient, and urgently they need
retrofitting or upgrading.
This thesis presents an Integrated (Structural and Thermal) upgrading of
the masonry walls with Natural Fiber (NF) TRM system and the experimental
results based on the in-plane cyclic compression tests and thermal conductance
test in a Climate Chamber (CC). It contains a total of eleven chapters.
Chapter 1 starts with initial introductive remarks and it highlights the
motivations, visions and structure of the thesis.
Chapter 2 contains the state of the art literature review: various
reinforcement strategies have been highlighted, including latest works done on
TRM retrofitting or upgrading.
Chapter 3 mainly underlines latest available guidelines and
recommendations on TRM reinforcement/upgrading, and rules and regulations
on the thermal transmittance or heat transfer coefficient (U) calculations.
Chapter 4 presents the physical characteristics and mechanical behaviors
of the raw jute fibers and its derived products (threads and diatons) obtained
through water absorption tests, aging test, tensile strength tests.
Chapter 5 presents the composite mortars prepared using two different
types (lime based and cement based) of mortars, three different fiber lengths (30
mm, 10 mm and mm) and four different fiber percentages (0.5%, 1%, 1.5% and
2%) with respect to the mortar masses. The mechanical behavior and thermal
performances of these composite samples were evaluated through flexural,
compression and thermal conductivity tests, respectively.
Chapter 6 contains some special cases, where composite samples were
prepared using only 0.5% and 1.0% of fiber with respect to the mortar mass, in
these cases particular attention was made on the amount of water used for the
mortar mix.
Chapter 7 presents the masonry Integrated (Thermo-Structural) upgrading.
Masonry walls were upgraded using various combinations of the jute fiber
products to improve the structural and thermal performances of the masonry
walls. The integrated behavior has been determined through the in-plane cyclic
compression test and the thermal conductance test.
Chapter 8 highlights the innovative approach to recycle scrap jute net fibers
for composite mortar preparation and investigates its thermo-mechanical
behavior.
Chapter 9 presents the observation on crack patterns in the prismatic
samples and masonry wall specimens. This was done using Digital Image
Correlation (DIC) procedure and analysis.
Chapter 10 reports the outcome the carbon-footprint analysis conducted on
the masonry wall upgrading process with jute fiber products, on the basis of on-
field survey, jute mill visit and literature review [edited by Author] | it_IT |
