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Now showing items 51-60 of 348
Production of Self-healing Concrete using Gum Arabic for Immobilizing of Bacterial Spores on Sand
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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 ...
Experimental Investigation on the Flexural Capacity of Reinforced Concrete Beams with Treated Wastewater and Recycled Concrete Aggregates
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Qatar University Press
, 2023 , Conference Paper)
Eco-friendly concrete is the most recommended sustainable option to reduce the excessive diminution of concrete natural resources and the high generation of greenhouse gas emissions. Therefore, the present study explores ...
Modeling Thermal Conductivity, Thermal Diffusivity and Specific Heat of Asphalt Concrete Using Beta Regression and Mixture Volumetrics
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Qatar University Press
, 2023 , Conference Paper)
The main objective of this paper is to develop predictive models using Beta regression for laboratory-prepared hot mix asphalt (HMA) specimens' thermal properties, including thermal conductivity (TC), thermal diffusivity ...
Numerical Study on the Pullout Behavior of Steel Fibers in Cement-Based Composites
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Qatar University Press
, 2023 , Conference Paper)
The interaction between steel fiber and surrounding cement-based matrix and concrete materials is crucial in the behavior of Steel Fiber-Reinforced Concrete (SFRC). This interaction is generally measured through a single ...
Sustainability Driven Strategy for Achieving Sustainable Infrastructure: Musaimeer Pumping Station and Outfall Project
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Qatar University Press
, 2023 , Conference Paper)
The increasing emphasis on global sustainability issues such as climate change, loss of biodiversity, deforestation, and water scarcity has provided a strong mandate for the construction industry to incorporate sustainable ...
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 ...
The Use of Demolished Concrete Lumps (DCL) in Rectangular CFSTs Under Flexure
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Qatar University Press
, 2023 , Conference Paper)
This paper investigates the flexural performance of rectangular concrete-filled steel tube (CFST) beams that are partially incorporated with demolished concrete lumps (DCLs). In total, three CFST beams were prepared and ...
Modeling Asphalt Pavement Frictional Properties using Different Machine Learning Algorithms
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Qatar University Press
, 2023 , Conference Paper)
The objective of this work is to use some machine learning algorithms and test its efficiency in developing models to predict Locked Wheel Skid Trailer (LWST) values from Dynamic Friction Tester (DFT) and Circular Texture ...
A Markovian-Genetic Algorithm Model for Predicting Pavement Deterioratio
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Qatar University Press
, 2023 , Conference Paper)
Pavement structures are constantly deteriorating due to many distresses, for instance cracks and rutting that are initiated and expanded. Deterioration models of pavement structures is an important component of pavement ...
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 ...