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Strengthening of autoclaved aerated concrete (AAC) members using basalt fabrics with an inorganic matrix

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TitleInfo
Title
Strengthening of autoclaved aerated concrete (AAC) members using basalt fabrics with an inorganic matrix
Name (type = personal)
NamePart (type = family)
Ali
NamePart (type = given)
Alaa
NamePart (type = date)
1979-
DisplayForm
Alaa Ali
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Najm
NamePart (type = given)
Husam
DisplayForm
Husam Najm
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
chair
Name (type = personal)
NamePart (type = family)
Balaguru
NamePart (type = given)
P.N
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P.N Balaguru
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Yong
NamePart (type = given)
Yook-Kong
DisplayForm
Yook-Kong Yong
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Uchrin
NamePart (type = given)
Christopher
DisplayForm
Christopher Uchrin
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
School of Graduate Studies
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2018
DateOther (qualifier = exact); (type = degree)
2018-05
CopyrightDate (encoding = w3cdtf); (qualifier = exact)
2018
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
Autoclaved Aerated Concrete (AAC) is a lightweight porous cementitious material, made from cement, fine silica sand, water, aluminum powder, and quicklime. AAC which has a density of 400 to 600 kg/m3 can be considered as inorganic foam. This material is attractive for use as building elements due to their light weight as compared to normal concrete, fire resistance, ease of construction, energy efficiency, and sound insulation. In most of these applications, the precast structural elements made of AAC are subjected compression and bending forces. Since the bending strength of AAC is very low, its flexural capacity is improved by using steel wire mesh and small size rebars. However, due to the weak bond between AAC and steel wires and small bars and potential corrosion, needed strength increases cannot be obtained. This dissertation studies the use of basalt fabric composite for enhancing the flexural strength of AAC beams and panels. It also evaluates the effect of higher temperatures on the flexural strength of plain and strengthened AAC beams. The basalt fibers were applied to the AAC using an inorganic matrix to preserve the fire resistance capability of both AAC and the basalt fibers. An experimental investigation was conducted to evaluate the capability of an inorganic matrix to fully develop the strength capacity of the basalt fiber in tension. Several series of strengthened AAC beams were tested in flexure following ASTM C 1452-06. Results show that the matrix is capable of providing the required bond between the basalt fibers and AAC. The strength capacity of basalt fibers was fully developed for tows and fabrics basalt reinforcement, and significant increase of flexural strength was achieved. The strengthening also reduced the loss of strength at elevated temperatures compared to plain beams. An analytical study was performed to predict the failure load in flexure. The failure load was predicted using three methods: elastic analysis, ultimate stress analysis, and non-linear analysis. The results of the analytical methods showed that the flexural strength of basalt fiber reinforced AAC beams can be reasonably predicted using the analytical models. The hand impregnation technique used to apply the matrix is conducive for easy field applications. The results show that the potential of significantly increasing the bending capacity of AAC panels making it a viable the system for practical applications. It is anticipated that the increase in strength will lead to longer spans and less thickness in exterior wall panels and roofing elements.
Subject (authority = RUETD)
Topic
Civil and Environmental Engineering
Subject (authority = ETD-LCSH)
Topic
Air-entrained concrete
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_8768
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (xvii, 214 p. : ill.)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Alaa Ali
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier (type = doi)
doi:10.7282/T38K7DHS
Genre (authority = ExL-Esploro)
ETD doctoral
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Ali
GivenName
Alaa
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2018-04-06 15:52:00
AssociatedEntity
Name
Alaa ALI
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
RightsEvent
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2018-05-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2020-05-30
Type
Embargo
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after May 30th, 2020.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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