تصفح Theme 2: Advances in Infrastructure Sustainability, Renovation, and Monitoring حسب تاريخ النشر
السجلات المعروضة 21 -- 40 من 68
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Utilisation of Waste Plastics Admix with Laterite Soil for Production of Road Pavement Interlocking Blocks
( Qatar University Press , 2023 , Conference Paper)Plastic wastes are non-biodegradable and hence pile up in refuse dumps and streets constituting an eyesore and menace to the environment. Some of them end up in drainages and waterways where they block water passages ... -
Launching a 148m-Long Tunnel Boring Machine from a 15m-Inner Diameter Shaft
( Qatar University Press , 2023 , Conference Paper)The city of Doha has grown and expanded rapidly in the last 20 years, but this growth has strained the country's infrastructure, including its aging sewerage system and treatment facilities. ASHGHAL has therefore launched ... -
Hardened Properties of Self-Compacting Concrete Incorporating Recycled Granite Waste as Fine Aggregate
( Qatar University Press , 2023 , Conference Paper)The present paper investigates the hardened properties of self-compacting concrete by reusing granite waste to replace natural fin aggregates. The reuse of solid wastes as powder or aggregates allows us to produce sustainable ... -
Self-compacting Backfills using Fly Ash and Dredged Marine Sediments for Public Work Applications
( Qatar University Press , 2023 , Conference Paper)Sediment accumulation at the bottom of ports disrupts maritime activities and disturbs the physicochemical balance of water bodies. In France, the maintenance of the 6500-kilometer long coastline would require the extraction ... -
Planning and Implementing of Effective Enabling Works for a Successful TBM Tunnelling Project
( Qatar University Press , 2023 , Conference Paper)The outfall tunnel, which forms part of the Musaimer Pump Station and Outfall project (MPSO), is a 10.2 km long subsea tunnel that extends from the south coast of Doha, starting onshore, and continues under the Arabian ... -
Enhancing the Bond Durability of Basalt Fiber Reinforced Polymer Bars Using Basalt-Macro Fiber Reinforced Concrete
( Qatar University Press , 2023 , Conference Paper)This paper presents a study about the bond durability of basalt fiber reinforced polymers (BFRP) bars embedded in concrete incorporating basalt macro fibers (BMF) when conditioned in harsh saline environment at 60 °C. A ... -
Ashghal Quality Assurance & Quality Control system - QSD Role in Monitoring & Reporting the Quality Performance in Ashghal Projects
( Qatar University Press , 2023 , Conference Paper)Ashghal has established a robust system of quality control and quality assurance for all projects constructed by Ashghal. Ashghal Departments are supervising a sophisticated system of quality control and quality assurance ... -
Theoretical Simulation of Thermal Deformations in Concrete Beams Reinforced with Two Overlapped FRP Bars in Cold Regions
( Qatar University Press , 2023 , Conference Paper)The thermal incompatibility in transverse direction between concrete and fiber reinforced polymer (FRP) bars may cause tensile circumferential cracks within concrete under low temperatures, and consequently, the failure ... -
Widening of an Existing Bridge to Accommodate Two Traffic Lanes - Al Bustan South Project in Qatar
( Qatar University Press , 2023 , Conference Paper)Driven by Qatar National Vision 2030 and catering to the 2022 FIFA World Cup, Qatar is undertaking an extraordinary and ambitious programme of infrastructure development to deliver a world-class new and upgraded road ... -
Backfilling Shaft Surround Using Recycled Concrete Waste Material
( Qatar University Press , 2023 , Conference Paper)The massive development in the State of Qatar to fulfil the Qatar National 2030 Vision requires efforts to direct the construction sector towards reducing economic, social and environmental impacts through the application ... -
Production of Self-healing Concrete using Gum Arabic for Immobilizing of Bacterial Spores on Sand
( Qatar University Press , 2023 , Conference Paper)This paper studies the feasibility of producing self-healing concrete by immobilization of bacteria on the sand. In this study, the Gum Arabic (Acacia Senegal) was used to immobilize bacterial spores and its nutrient ... -
RSM Analysis for Optimum Content of Graphene Nanoplatelets for 3D-Printed Clay Strength
( Qatar University Press , 2023 , Conference Paper)This study applies Response Surface Methodologies (RSM) methods to maximize 3D-Printed clay mechanical properties. Mixes containing different Graphene Nanoplatelets (GNPs) contents were printed and tested in compression ... -
Corrected Rock Fracture Parameters Applied to Qatari Rock Masses
( Qatar University Press , 2023 , Conference Paper)This paper is the continuation of the author's previous publications and an attempt to shed light on some of the presented propositions, therein. In his previous work, the author introduced a novel parameter for borehole ... -
Preliminary Study on the Use of Reclaimed Asphalt in Public Works Authority Road Projects in the State of Qatar
( Qatar University Press , 2023 , Conference Paper)This paper describes the outcomes of a preliminary study focused on the evaluation of four full-scale pavement sections in which reclaimed asphalt (RAP) was used in partial substitution of virgin aggregates during the ... -
Sustainable Alternatives for Concrete by adding Different Types of Natural and Industrial Waste Materials
( Qatar University Press , 2023 , Conference Paper)The construction industry accounts for a high percentage of global energy-related CO2 emissions (37 % in 2021 based on data from United Nations Environmental Program - UNEP) leading to an increasing need for solutions to ... -
Influence of Adding Demolition Wastes on the Mechanical Properties of Concrete in Sultanate of Oman
( Qatar University Press , 2023 , Conference Paper)Nowadays the global trend in construction industry is to reduce the cost, saving energy and preserving the environment. Using other industries' waste material as a construction material is one of several methods followed ... -
Marine Dredging Sediments Valorization in Self-Compacting Concretes
( Qatar University Press , 2023 , Conference Paper)Rock and eroded soil are transported by wind, tide, and human action (development works), and deposited as sediment in ports, estuaries, and rivers. The sediment accumulation at the bottom of ports disrupts maritime ... -
Impact of the Fiber Distribution Characteristics on the Uniaxial Behaviour of Fiber-Reinforced Composites- An Experimental Study
( Qatar University Press , 2023 , Conference Paper)The demand for development of fiber-reinforced composites has enhanced as the practise of integrating fibres into concrete has become prevalent over the past few decades.. The intersection zone where the fiber crossing the ... -
Characterisation of Sewage Sludge and Municipal Solid Waste for Use as Cementitious Materials
( Qatar University Press , 2023 , Conference Paper)Volumes of accumulated solid waste materials of sewage sludge (SS) and municipal solid waste (MSW) in Qatar continue to increase annually with a potentially negative impact on the environment. This paper presents an ... -
Along-Wind Aerodynamic Forces on a Rectangular Plan Building in Vicinity of a Gently Sloped Two-Dimensional Hill
( Qatar University Press , 2023 , Conference Paper)Many engineering applications, such as wind energy distribution for optimum site selection for wind farms, pollutant dispersion, forest fire propagation and wind loads on structures in hilly terrains require a thorough ...