Tattukolla Kiran

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• PhD Student at University of Melbourne

Recent years have seen a very significant increase in the development of cement-replacement products, owing to the environmental challenges associated with ordinary Portland cement (OPC). Geopolymer concrete replaces cement with alternative binders such as fly ash and ground granular blast furnace slag (GGBS), and the behaviour in terms of the work...

High-performance steel has emerged as an advanced structural material in the construction practice of industrial buildings, due to its excellent properties. However, fire poses a significant threat to cold-formed steel structures, as they are prone to deform and buckle under the exposure, potentially leading to building collapse. This study aimed t...

Geopolymer concrete (GPC) is an emerging green substitute for conventional cement-based concrete. Due to the eco-friendly benefits of GPC, it possesses superior strength properties. Self-compacting concrete (SCC) is a special concrete, it has the tendency to pass and fill congested areas without the help of vibrators. As the Self-compacting based G...

Fiber-reinforced geopolymer concrete has been attracting attention and interest worldwide due to its sustainable properties. However, few studies have reported the pull-out behaviour of fiber-reinforced geopolymer concrete (GPC) at elevated temperatures. In order to bridge this knowledge gap, a series of detailed investigations aimed to investigate...

The present research investigates the behaviour of sustainable Self-Compacting Concrete (SCC) when subjected to high temperatures, focusing on workability, post-fire impact resistance, and the effects of fire protection coatings. To develop environmentally friendly SCC mixes, Supplementary Cementitious Materials (SCM) such as Fly Ash (FA), Ground G...

Purpose The construction industries at present are focusing on designing sustainable concrete with less carbon footprint. Considering this aspect, a Fibre-Reinforced Geopolymer Concrete (FGC) was developed with 8 and 10 molarities (M). At elevated temperatures, concrete experiences deterioration of its mechanical properties which is in some cases a...

The interconnection between the steel and concrete is frequently weakened by corrosion. Interestingly, it has been observed that nano pozalonic materials offer an economical approach for lowering the permeability of concrete by enhancing its morphological characteristics. This research discusses the impact of nano pozalonic materials on strengtheni...

Cold-formed steel (CFS) sections are light gauge materials widely used to construct industrial structures. CFS construction is gaining more interest among researchers, construction industries, and structural engineers due to its lightweight and cost-effective design. Fire safety in the building is a significant factor to be considered in the design...

Self-Compacting Concrete (SCC) is a special concrete that can flow easily across congested reinforcements. Also, it is easy to work with and does not segregate. The present investigation aims at the design and development of sustainable SCC with the employment of industrial by-products such as Fly Ash (FA), Ground Granulated Blast Furnace Slag (GGB...

Building fires are sometimes unavoidable due to unexpected accidents. During the fire, the structural elements are exposed to temperatures above 1000 °C. Structural concrete loses its strength and stiffness during the heating and cooling cycle. In most cases, during a real fire, the structural elements are cooled by water quenching. It is rare scen...

Geo-polymer concrete (GPC) can be obtained by chemical reactions in industrial products and naturally available alumino silicate sources. The main drawback of GPC is that there are no standard or specific guidelines for mix production. Even though the lack of a proper mix design method limits the geo-polymer acceptance in the industry. In the case...

: Structural concrete has become a highly preferable building material in the construction industry due to its versatile characteristics, such as workability, strength, and durability. When concrete structures are exposed to fire, the mechanical properties of concrete degrade significantly. The research on the residual mechanical properties of conc...

Self-compacting concrete (SCC) is a high-performance concrete widely used as a building material. The present investigation examines the effects of age and cooling type (air-cooled and water-cooled) of SCC after being exposed to elevated temperatures and compares them to those of normal conventional concrete (NCC). Two types of concrete; i.e., NCC...

The increase in the population creates an increased demand for construction activities with eco-friendly, sustainable, and high-performance materials. Insulated concrete form (ICF) is an emerging technology that satisfies the sustainability demands of the construction sector. ICF is a composite material (a combination of expanded polystyrene (EPS)...

The present study aims to evaluate the performance of concrete beams with different Fiber Reinforced Polymer (FRP) and steel bars exposed to elevated temperatures through a detailed experimental investigation. Flexural behavior of beams is analyzed with Carbon Fiber Reinforced Polymer bars (CFRP), Basalt Fiber Reinforced Polymer bars (BFRP), Glass...

Self-Compacting Concrete (SCC) is a green construction material widely used in the construction industry. While normal weight concrete has notable performance under fire conditions, the open literature continues to lack works examining the structural fire performance of SCC elements. Intending to bridge this knowledge gap, the present study aims to...

Purpose Most of the industrial buildings which are designed to moderate loads are constructed using light gauge cold-formed steel (CFS) sections. Residual mechanical properties of CFS sections exposed to elevated temperature need to be investigated as it is necessary to predict the deterioration of elements to avoid failure of the structure or its...

Structural concrete is a widely used building material due to its versatile characteristics including higher compressive strength and longevity. However, when exposed to fire, concrete experiences faster degradation in its mechanical properties and is also susceptible to spalling. To overcome this problem, the possibility of lightweight plaster app...

Clay bricks are one of the most widely used materials in building construction due to their advantages, including local availability, ease of fabrication and cost‐effectiveness. Fire is one of the dangerous hazards that can cause damage the life and property. Lightweight plasters play a vital role in insulating the masonry construction during fire...

This investigation presents the experimental studies on mechanical properties of geopolymer concrete (GPC) developed with the addition of sodium silicate waste sediments (SSW) as coarse aggregates. Conventional crushed granite coarse aggregate (CA) was replaced by SSW from the sodium silicate manufacturing plant. The GPC was developed by replacing...

Concrete and reinforcement steel are essential building materials widely used in composite construction due to their advantages, such as strength, durability and ease of availability. Fire is one of the critical hazards that causes severe damage to the structure and leads to progressive collapse. Due to the intensity of fire exposure, the concrete...

Geopolymer concrete (GPC) is a sustainable construction material developed from industrial waste products which eliminates the use of cement. Recycling the concrete waste for the development of GPC can satisfy the goals of this sustainable development. Appropriate trials were performed to accomplish a perfect blend of the binder, alkali activator (...

Purpose This study aims to develop geopolymer concrete (GPC) using manufactured sand (M-sand) and recycled concrete aggregate (RCA) under different curing conditions. GPC is a sustainable construction material developed with industrial waste products such as fly ash to eliminate the use of cement in the production of concrete. GPC requires heat cur...

This paper presents an experimental and numerical analysis considering the effect of standard fire conditions on the post-fire strength of hot rolled hollow steel sections, where the influence of passive protection, cooling conditions and micro structural changes were also analysed with precision. Square, rectangular and circular shaped specimens w...

Addition of fiber enhances the engineering properties of concrete. Effect of elevated temperatures on the compressive strength and stress–strain relationship of concrete are presented in this paper. The behavioral efficiency of fiber reinforced concrete (FRC) is far superior to that of plain concrete and many other construction materials of equal c...

Geopolymer concrete (GPC) is a sustainable construction material that can be used as a substitute for conventional cement concrete. Several factors influence the performance of GPC such as, the type of binder material used, the molar concentration of the activator solution, and the curing conditions. The main purpose of this work is to develop fibe...

Fire accidents are common in commercial buildings, and their effects cause severe damage to the buildings and structures. Concrete cover and the minimum size of structural elements are to be followed based on guidelines of codes and standards to protect buildings from severe fire exposure. However, the utilisation of advanced high-performance concr...

Interfacial shear stress transfer may occur in structural elements across concrete or between concrete and steel. The fundamental contributing parameters which improve the shear capacities are aggregate grading, compressive strength of concrete, type and area of the interfacial zone, and interfacial reinforcement pattern. During the event of a fire...

Self-Compacting Concrete (SCC) is an emerging building material as it has unique benefits over conventional concrete. SCC is a High-Performance Concrete (HPC) having the filling ability, passing ability and segregation resistance. In addition, SCC does not require vibration. However, to develop SCC, an appropriate mix design has to be carried out f...

Purpose Building elements that are damaged by fire are often strengthened by fiber wrapping techniques. Self-compacting concrete (SCC) is an advanced building material that is widely used in construction due to its ability to flow and pass through congested reinforcement and fill the required areas easily without compaction. The aim of the research...

Structural engineers must be cautious about fire accidents in buildings, as a result critical deterioration occurs in the strength and serviceability of concrete structures. Self-Compacting Concrete (SCC) is an efficient material developed using Supplementary Cementitious Materials (SCM). This research intends to evaluate the effect of mineral admi...

Aim of the research work is to examine the behaviour of Self-Compacting Concrete subjected (SCC) to elevated temperature. This research work examines the effect of water cooling on flexural behaviour of M25 and M40 grade SCC. The results of the investigation will enable the designers to choose the appropriate material for fire safety considerations...

Recent developments in the infrastructure urged the requirement of developing concrete with high performance. This research work presents the development of sustainable High Strength Fiber Reinforced Concrete (HSFRC), and its mechanical properties such as compressive strength, tensile strength and flexural strength compared to conventional High Str...

Development of thermal cracks is inevitable in concrete structures under extreme fire conditions. Intense heat flux on the exposed surface and the thermal incompatibility between the mortar and aggregate phase results in micro-cracks. The geometrical properties of cracks such as width, length, density and pattern are to be quantified accurately to...

Concrete is a building material widely used in construction due to its excellent mechanical properties such as compressive strength and bond strength with steel reinforcement. Strength and durability are the key factors that need to be satisfied in the design of reinforced concrete structures. The objective of this paper is to improve the bond stre...

The post-fire response of building elements on mechanical and durability characteristics plays a vital role in influencing the overall strength and serviceability parameters of the structure. This research work presents the experimental investigations carried out to study the effect of elevated temperature on the durability characteristics of Norma...

The effective implementation of a quality fire safety model of Reinforced Concrete (RC) structures rely on the reliable numerical simulation tools of RC exposed to elevated temperature. To assess the thermal behaviour, models were created for Glass Fibber Reinforced Polymer (GFRP) RC beams exposed to fire loads following ISO 834 standard fire curve...

Self-Compacting Concrete (SCC) being a sustainable high-performance concrete capable of flowing through congested reinforcement and can fill the shuttering without any external energy. The investigation focuses on the effect of waste materials generated from industries on the fresh and mechanical properties of SCC. Experiments were carried out to d...