Hawreen Ahmed
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View article: Evaluating the mechanical behavior of plastic waste modified asphalt using optimized machine learning approaches
Evaluating the mechanical behavior of plastic waste modified asphalt using optimized machine learning approaches Open
The growing environmental challenges associated with plastic waste disposal and the need for sustainable pavement construction practices have prompted significant research interest in incorporating recycled plastics into asphalt mixtures. …
View article: Investigating the synergistic effects of Metakaolin and silica fume on the strength and durability of recycled aggregate concrete at elevated temperatures
Investigating the synergistic effects of Metakaolin and silica fume on the strength and durability of recycled aggregate concrete at elevated temperatures Open
The use of recycled aggregate (RA) as a partial or full replacement of natural aggregate (NA) is a suitable method of concrete production that has positive impacts on the environment. However, recycled aggregate concrete (RAC) has relative…
View article: Sustainable concrete production through the integration of waste foundry sand, fly ash, silica fume and metakaolin
Sustainable concrete production through the integration of waste foundry sand, fly ash, silica fume and metakaolin Open
This exploratory study investigates the use of waste foundry sand (WFS), combined with supplement cementitious materials (SCMs), in concrete production. The Preliminary Investigation is based on three groups, where the first group studies …
View article: Sustainable concrete: investigating the synergistic effects of coconut fiber, wheat straw ash, and silica fume on RAC strength and durability
Sustainable concrete: investigating the synergistic effects of coconut fiber, wheat straw ash, and silica fume on RAC strength and durability Open
As concrete production accounts for a large percentage of worldwide CO 2 emissions, there is a need for alternative sustainable construction materials. Simultaneously, the increasing generation of construction and demolition waste has led …
View article: Performance and sustainability in hybrid concrete: A study of recycled aggregates and activated fly ash
Performance and sustainability in hybrid concrete: A study of recycled aggregates and activated fly ash Open
Construction and demolition waste (CDW), particularly concrete debris, poses significant environmental challenges globally. This study investigates the sustainable use of recycled coarse aggregates (RCA) combined with activated fly ash (AF…
View article: Machine learning prediction and explainability analysis of high strength glass powder concrete using SHAP PDP and ICE
Machine learning prediction and explainability analysis of high strength glass powder concrete using SHAP PDP and ICE Open
Achieving high-strength concrete (HSC) with sustainable supplementary cementitious materials (SCMs) remains a significant challenge in the construction industry. Although glass powder has shown promise as a partial cement substitute, its s…
View article: Optimizing recycled aggregate concrete performance with chemically and mechanically activated fly ash in combination with coconut fiber
Optimizing recycled aggregate concrete performance with chemically and mechanically activated fly ash in combination with coconut fiber Open
As a matter of fact, although RCA is inferior to that of NA (natural aggregate) in terms of performance, RCA is currently being used extensively in concrete production as a sustainable solution due to global increasing construction waste. …
View article: Research Decline and Retraction Surge in Pakistan: A Critical Examination
Research Decline and Retraction Surge in Pakistan: A Critical Examination Open
View article: Evaluating the combined effect of sugarcane bagasse ash, metakaolin, and polypropylene fibers in sustainable construction
Evaluating the combined effect of sugarcane bagasse ash, metakaolin, and polypropylene fibers in sustainable construction Open
The major challenge for the construction industry is to design and produce sustainable construction materials that are efficient in their performance and can be affordable for construction projects. The objective of this study is to determ…
View article: The enhancement of engineering characteristics in recycled aggregates concrete combined effect of fly ash, silica fume and PP fiber
The enhancement of engineering characteristics in recycled aggregates concrete combined effect of fly ash, silica fume and PP fiber Open
In today's world, enhancing the performance of recycled aggregate concrete is an essential need, as it ensures the effective utilization of demolished construction waste. The advantages of fly ash and polypropylene fiber in conventional st…
View article: Enhancing the engineering characteristics of sustainable recycled aggregate concrete using fly ash, metakaolin and silica fume
Enhancing the engineering characteristics of sustainable recycled aggregate concrete using fly ash, metakaolin and silica fume Open
View article: Investigating the Effects of Polypropylene Fibers on the Mechanical Strength, Permeability, and Erosion Resistance of Freshwater and Seawater Mixed Concretes
Investigating the Effects of Polypropylene Fibers on the Mechanical Strength, Permeability, and Erosion Resistance of Freshwater and Seawater Mixed Concretes Open
Seawater mixed (SW) concrete lessens the freshwater (FW) demand and eases the stress on the already depleting FW resources. The use of SW concrete is a sustainable solution that mitigates the environmental impact of concrete production, es…
View article: Synergistic Effect of Micro-Silica and Recycled Tyre Steel Fiber on the Properties of High-Performance Recycled Aggregate Concrete
Synergistic Effect of Micro-Silica and Recycled Tyre Steel Fiber on the Properties of High-Performance Recycled Aggregate Concrete Open
The present research investigates the mechanical and physical properties of recycled aggregate concrete (RAC) modified with micro-silica (MS) and recycled tire steel fiber (RTSF). Natural coarse aggregates (NCA) were completely replaced by…
View article: Effect of binder strengthening using micro-silica on mechanical and absorption characteristics of HPC reinforced with reclaimed jute fibres
Effect of binder strengthening using micro-silica on mechanical and absorption characteristics of HPC reinforced with reclaimed jute fibres Open
The incorporation of dispersed fibres in the binder matrix is proven to be beneficial to the tensile performance of high-performance concrete (HPC). However, the insertion of new/virgin fibres in the ‘concrete matrix’ significantly adds to…
View article: Improving the performance of recycled aggregate concrete using nylon waste fibers
Improving the performance of recycled aggregate concrete using nylon waste fibers Open
View article: Development of Ductile and Durable High Strength Concrete (HSC) through Interactive Incorporation of Coir Waste and Silica Fume
Development of Ductile and Durable High Strength Concrete (HSC) through Interactive Incorporation of Coir Waste and Silica Fume Open
The issue of brittleness and low post-peak load energy associated with the plain HSC led to the development of fiber-reinforced concrete (FRC) by using discrete fiber filaments in the plain matrix. Due to the high environmental impact of i…
View article: Heat-Induced Spalling of Concrete: A Review of the Influencing Factors and Their Importance to the Phenomenon
Heat-Induced Spalling of Concrete: A Review of the Influencing Factors and Their Importance to the Phenomenon Open
Heat-induced spalling in concrete is a problem that has been the subject of intense debate. The research community has, despite all the effort invested in this problem, few certain and definitive answers regarding the causes of and the way…
View article: Assessment of High Performance Self-Consolidating Concrete through an Experimental and Analytical Multi-Parameter Approach
Assessment of High Performance Self-Consolidating Concrete through an Experimental and Analytical Multi-Parameter Approach Open
High-performance self-consolidating concrete is one of the most promising developments in the construction industry. Nowadays, concrete designers and ready-mix companies are seeking optimum concrete in terms of environmental impact, cost, …
View article: Influence of Cracking on the Durability of Reinforced Concrete with Carbon Nanotubes
Influence of Cracking on the Durability of Reinforced Concrete with Carbon Nanotubes Open
This study focuses on the influence of natural and artificially induced cracks on the durability of concrete reinforced with carbon nanotubes (CNT). Pre-cracked concrete mixes, unreinforced or reinforced with 0.1% CNT, are characterized in…
View article: Effect of Varying Steel Fiber Content on Strength and Permeability Characteristics of High Strength Concrete with Micro Silica
Effect of Varying Steel Fiber Content on Strength and Permeability Characteristics of High Strength Concrete with Micro Silica Open
For the efficient and durable design of concrete, the role of fiber-reinforcements with mineral admixtures needs to be properly investigated considering various factors such as contents of fibers and potential supplementary cementitious ma…
View article: Magnesia (MgO) Production and Characterization, and Its Influence on the Performance of Cementitious Materials: A Review
Magnesia (MgO) Production and Characterization, and Its Influence on the Performance of Cementitious Materials: A Review Open
This paper presents a literature review concerning the characteristics of MgO (magnesium oxide or magnesia) and its application in cementitious materials. It starts with the characterization of MgO in terms of production processes, calcina…
View article: Enhancing the Hardened Properties of Recycled Concrete (RC) through Synergistic Incorporation of Fiber Reinforcement and Silica Fume
Enhancing the Hardened Properties of Recycled Concrete (RC) through Synergistic Incorporation of Fiber Reinforcement and Silica Fume Open
Portland cement concrete is fragile in tension and it has numerous negative impacts on the environment. To deal with these issues, both fiber reinforcement and recycled materials can be utilized to manufacture sustainable and ductile concr…
View article: Evaluation of the Ecotoxicological Potential of Fly Ash and Recycled Concrete Aggregates Use in Concrete
Evaluation of the Ecotoxicological Potential of Fly Ash and Recycled Concrete Aggregates Use in Concrete Open
This study applies a methodology to evaluate the ecotoxicological potential of raw materials and cement-based construction materials. In this study, natural aggregates and Portland cement were replaced with non-conventional recycled concre…