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Now showing items 1-20 of 164

Advancements in Material and Structural Designing of Bendable Concrete for its Commercial Implementation

Khokhar, Sikandar Ali (2022)

Bendable concrete scientifically termed as “Engineered Cementitious Composites” is gaining popularity among researchers because of its enhanced ductility and durability properties. However, due to certain key constraints, ...
Alkali Silica Reaction in Geopolymer Recycled Aggregate Concrete

Khan, Mohammad Azeem (NUST, 2021)

This thesis states the outcomes of an experimental study aimed to compare alkali silica reaction’s (ASR) mechanism by evaluating its damage in conventional concrete and geopolymer concrete. Geopolymer mortar specimens were ...
Analysis & Design of 3-Storey Hospital Building Using Cold Formed Steel

Wahid Badar (NUST-SCEE, 2012)

Earthquakes are the most catastrophic phenomena of nature. In October 2005, major earthquake struck northern areas of Pakistan which lead to heavy loss of property and human life. Survey of the area shows that buildings ...
Analysis of a Concrete Bridge using BIM and 3-D Reconstruction Technique

Ahmad, Mudassir (NUST, 2021)

Visual inspections are the initiating procedures for any structural health assessment method. In civil engineering structures, visual inspections have become more challenging because of the massiveness of the structures. ...
ANALYSIS OF BRIDGE BY USING DOUBLE LAYER GRID

FAIZAN AHMAD (NICE-SCEE, 2017)

A lot of research work done in past time to improve the quality of bridge without compromising on the cost by using a same material concrete, steel and sometime wooden. These all are the conventional method for the structural ...
Analysis Of Shear Walls in Controlling Lateral Drift in Medium to High Rise Structures.

Unknown author (NUST-SCEE, 2013)

Pakistan is located in seismic active zone of the world. Past earthquakes indicate the extent of damage being done to life and infrastructure as a result of earthquakes. Kashmir earthquake 2005, Quetta earthquake 1935 and ...
APPLICATION OF POST TENSIONED CONCRETE IN PAKISTAN AND ITS COMPARISON WITH CONVENTIONAL CONCRETE

AYAZ MUHAMMAD (NUST-SCEE, 2016)

The research project is industry based and is objectified at an application of Post tensioning of concrete in Pakistan and its comparison with the conventional concrete systems. Our work of research is limited to Unbonded ...
Application of Post Tensioned Concrete in Pakistan and its Comparison with Conventional Concrete

Muhammad, Ayaz (NUST, 2016)

The research project is industry based and is objectified at an application of Post tensioning of concrete in Pakistan and its comparison with the conventional concrete systems. Our work of research is limited to Unbonded ...
Assessment of Energy Efficiency and Contribution of Climate Change Impacts via Room Air conditioners, Refrigerators and Deep Freezers in Pakistan

Waqas Ali (NICE SCEE, National University of Sciences and Technology, Islamabad, 2020)

Pakistan constitutes the region where summers have high temperatures with a long duration. Consequently, the demand for cooling equipment is very high in most parts of the country. To meet such high demand, increasing ...
Carbon Dioxide Inhaling bio Healable Interlocking Compressed Earth Bricks

Ghori, Talha Jamal (NUST, 2021)

Bricks one the most commonly used construction material employed. This is because of its manufacturing convenience and economy. Having said that, it does have its disadvantages, one of the biggest being its contribution ...
Carbon Fiber Reinforced Polymer (CFRP) composites with fibers/fabrics bonded with organic polymers (resin system) are being referred to as the materials of 21st century because of many inherent advantages including market acceptance. The application of composites in civil infrastructure projects started in late 1980, with major advances in bridges, roads, retrofitting of structures, and marine applications. In the last decade, significant efforts have been made to develop design guidelines, and construction and maintenance standards, and specifications for FRP reinforcement, CFRP being one of them, FRP wraps, and FRP shapes including standardized test methods.. Strengthening with externally bonded CFRP fabric has shown to be applicable to many kinds of structures. Currently, this method has been applied to strengthen such structures as column, beams, walls, slabs, etc. The use of external CFRP reinforcement may be classified as flexural strengthening, improving the ductility of compression members, and shear strengthening. It is well known that reinforced concrete beams strengthened with externally bonded fiber-reinforced polymer (FRP) or CFRP to the tension face can exhibit ultimate flexural strength greater than their original flexural strength. However, these FRP and CFRP strengthened beams could lose some of their ductility due to the brittleness of FRP and CFRP plates. The high strength-to-weight ratio, resistance to electrochemical corrosion, larger creep strain, good fatigue strength, potential for decreased installation costs and repairs due to lower weight in comparison with steel, and nonmagnetic and non-metallic properties of fiber reinforced polymer (FRP) composites offer a viable alternative to bonding of steel plates. The emergence of high strength epoxies has also enhanced the feasibility of using CFRP sheets and carbon fiber fabric for repair and rehabilitation. In the experimental study conducted, there point Flexural testing method was used comprising of 6 samples of beams, the details of which are as follows;  2 control beams-CB(kept as the reference)  2 Un-cracked beam retrofitted with CFRP-CFB  2 Pre-cracked beam retrofitted with CFRP-RFB The various findings of the experiments are summarized as under;  The ultimate load-carrying capacity of the strengthened (CFB and RFB) beams was increased as compared to the control beams (CB).  CFRP sheets increased the strength and stiffness of the beams to a great extent with eventual de-bonding failure at the ultimate load.  Beams strengthened with CFRP sheets showed lesser deflections as compared to the control beams (CB).  The crack widths were decreased substantially in the strengthened beams as compared to those in the control beams, with a significant increment in the moment capacity of he strengthened beams.  The Pre-cracked (RFB) and Un-cracked (CFB) strengthened beams exhibited similar deflection characteristics. But pre-cracked beam showed about 60% more deflection than un-cracked beams at service load of the control beams (CB), but later on both showed similar behavior. Additional work and elaboration on various under-addressed aspects is necessary as discussed in the summary and recommendation section of this thesis, to exploit the profound and widespread benefits of CFRP composites in making the structures more economical, having longer service lives and exhibiting better performance with lower maintenance requirements.

Unknown author (NUST-SCEE, 2013)

Carbon Fiber Reinforced Polymer (CFRP) composites with fibers/fabrics bonded with organic polymers (resin system) are being referred to as the materials of 21st century because of many inherent advantages including market ...
Comparative Response of Latex Modified Conventional and Latex Modified Self-Compacting Concrete

Hamza Azam (NUST-SCEE, 2016)

Self-compacting concrete has revolutionized the construction industry and the addition of polymer to self compacting concrete (SCC) is a new area of application. In latex modified conventional and latex modified SCC the ...
Comparative Response of Latex Modified Conventional and Latex Modified Self-Compacting Concrete

Azam, Hamza (NUST, 2016)

Self-compacting concrete has revolutionized the construction industry and the addition of polymer to self compacting concrete (SCC) is a new area of application. In latex modified conventional and latex modified SCC the ...
COMPARATIVE STUDY OF SELF COMPACTING CONCRETE USING RECYCLED COARSE AGGREGATE

Salman Ali (NICE-SCEE, 2017)

In the present study, the focus is placed on the experimental research of Self-Compacting Concrete systems (SCCs) produced by replacing the natural coarse aggregates (NCA) with recycled coarse aggregates (RCA). By its ...
A Comparative Study To Determine Optimum Height-Cost Relationship For Multistory Buildings By Designing Models of Varying Footprint and Constant Covered Area

Aqib Habib (NICE SCEE, National University of Sciences and Technology, Islamabad, 2020)

In construction economics, the two ways to construct an economical structure include increasing number of storeys or increasing the footprint area of the building. Multistory buildings increase the cost of foundation while ...
COMPARISON OF CONVENTIONAL PARTIONING SYSTEM WITH LIGHT GAUGE STEEL PARTIONING IN MULTI-STOREY BUILDINGS

M.Aqib Usman (NUST-SCEE, 2015)

The population is growing so fast that the world's population will jump from 6.5 billion to around 9 billion over the next 50 years. The resources of the earth are depleting very fast. It is ultimate need of the time to ...
COMPARISON OF LATERAL FORCE RESISTING SYSTEMS WITH & WITHOUT RETROFITTED PROVISIONS

Hamza Rehman (NICE SCEE, National University of Sciences and Technology, Islamabad, 2019)

Comparison of different Lateral Force Resisting System with or without braces was done using different tools which includes both physical and software testing of the model. Braces were provided at different orientation in ...
Computation Modeling of Reinforced concrete beams using Fictitious crack model

MUHAMMAD JAHANGIR (NICE SCEE, National University of Sciences and Technology, Islamabad, 2020)
COMPUTER AIDED COST OPTIMIZED DESIGN OF REGULAR RCC BUILDING

Ghullam Hussain (NUST-SCEE, 2016)

This study focuses on preliminary/conceptual design phase, being the most crucial stage to dictate cost of RCC structures. The main objective of the study is to develop a MATLAB model suggesting the most cost-effective ...
Control of lateral drift of medium to high-rise buildings using Concrete Bracings

Unknown author (NUST-SCEE, 2013)

Pakistan lies in one of the seismically active regions of the world. To resist the lateral forces induced by earthquake, usually shear walls are used in medium to high rise buildings in Islamabad. Due to increase in weight, ...

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