Browsing Civil and Environmental Engineering by Title
Now showing items 249-268 of 781
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Effect of Alkaline Activators on the Mechanical Properties of Geopolymer Mortar
( Qatar Univesrity Press , 2020 , Conference Paper)"Geopolymerization is a process where silica and alumina rich source materials turn into excellent binding materials by the aid of alkali solutions. Materials such as fly ash are by-products in energy power plants. Fly ... -
The Effect of Aluminium Dross on Mechanical and Corrosion Properties of Concrete
( OMICS International , 2014 , Article)It is the objective of this project is to investigate the mechanical and chemical behaviour of new concrete type obtained by adding aluminium dross which is an impure aluminium mixture that results from metals melting and ... -
Effect of bond enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with externally bonded CFRP sheets
( Springer Nature , 2022 , Article)This paper studied the effect of incorporation of carbon nanotubes (CNTs) in carbon fiber reinforced polymer (CFRP) on strengthening of reinforced concrete (RC) beams. The RC beams were prepared, strengthened in flexure ... -
Effect of calcium nitrate healing microcapsules on concrete strength and air permeability
( ICE Publishing , 2019 , Article)This study investigates the compressive and flexural strengths, flexural modulus and air permeability of concrete samples containing 0.75% by cement weight of modified calcium nitrate self-healing microcapsules. The ... -
Effect of carbon nanotubes on the bonding mechanism of non-corrosive reinforcements to concrete
( Elsevier , 2024 , Article)This study aimed to assess the impact of waterborne pre-dispersed multiwall carbon nanotubes (MWCNTs) at a concentration of 0.2 wt % on the bond strength between concrete and non-corrosive reinforcements, including stainless ... -
The Effect of Change-Order Management Factors on Construction Project Success: A Structural Equation Modeling Approach
( American Society of Civil Engineers , 2022 , Article)Managing change order is a critical area of concern in the construction industry, owing to the resulting disputes, claims, productivity losses, delays, and cost repercussions. There have been various studies proposing both ... -
Effect of corrosion damage on the flexural performance of RC beams strengthened with FRCM composites
( Elsevier Ltd , 2017 , Article)This paper reports on the flexural behavior of corrosion-damaged reinforced concrete (RC) beams strengthened with different fabric-reinforced cementitious matrix (FRCM) composites. Three groups of beams were subjected to ... -
Effect of crushable blockouts on a full-scale guardrail system
( Taylor and Francis Ltd. , 2017 , Article)Since the performance of the guardrail system depends in part on the compatibility of vehicle-to-roadside hardware, it is important to improve the interaction of the vehicle with the guardrail system by adding more compliance ... -
Effect of mixing duration on flexural strength of multi walled carbon nanotubes cementitious composites
( Elsevier Ltd , 2016 , Article)This paper investigates the effect of mixing duration on the flexural strength of multi-walled carbon nanotubes (MWCNTs) reinforced cementitious composites. Each batch containing 0.03%, 0.08%, 0.15% or 0.25% MWCNT to cement ... -
Effect of Pavement Surface Aging on Tire-Pavement Noise: A Case Study in the State of Qatar
( EDP Sciences , 2018 , Conference Paper)The acoustical performance of asphalt pavements changes with time due to combined effects of environmental conditions and various distresses induced by repeated and heavy traffic. This study examined the changes in the ... -
Effect of rail unevenness correlation on the prediction of ground-borne vibration from railways
( DC/ConfOrg , 2015 , Conference Paper)This paper presents the influence of rail unevenness correlation on the predicted track and ground vibration. The study is based on an integrated railway model in the wavenumber-frequency domain with varying complexity ... -
Effect of self-healing calcium nitrate microcapsules on concrete properties
( National Research Council , 2016 , Article)Self-healing concrete with microencapsulated calcium nitrate was investigated. The compressive strength of concrete admixed with microcapsules (as a percentage of the weight of the cement) was tested and compared with that ... -
Effect of surface roughening on concrete/trm bond
( ISEC Press , 2017 , Conference Paper)Textile reinforced mortar (TRM) is applied on the concrete surface with the aim of strengthening reinforced concrete structures. The performance of the strengthened structural system is directly related to the bond between ... -
Effect of the induced dielectrophoretic force on harvesting of marine microalgae (Tetraselmis sp.) in electrocoagulation
( Elsevier , 2020 , Article)In this study, a new electrocoagulation electrode configuration has been investigated in order to induce dielectrophoretic (DEP) force for the enhanced harvesting of marine microalgae (Tetraselmis sp.). Asymmetrical aluminum ... -
Effect of using Cement Kiln Dust as a nano-material on the strength of cement mortars
( Springer Verlag , 2017 , Article)In this experimental study, the effects of using nano-sized Cement Kiln Dust (CKD) as a partial replacement for Ordinary Portland Cement (OPC) on the strength of cement mortars is investigated. The CKD was milled up to 4 ... -
Effect of using multiple fabric plies on the tensile behaviour of carbon textile reinforced mortar
( University of Cantabria - Building Technology R&D Group , 2020 , Conference Paper)Recently, textile reinforced mortar (TRM) has emerged as a viable strengthening material for reinforced concrete (RC) and masonry structures. Understanding the TRM tensile behaviour is important to achieve an accurate ... -
Effect of vehicle safety recalls on the perception towards other vehicles from the same country of origin
( Periodical Offices of Chang- an University , 2019 , Article)A vehicle safety recall significantly impacts the demand for these specific manufacturer vehicles. The effect of this recall on the other manufacturers from the same country of origin (COO) that are not involved in the ... -
Effective framework for change order management using analytical hierarchy process (AHP)
( GaziUniversityEtiMahallesi , 2018 , Article)Construction projects are of very complex nature and come along with an intrinsic but undesirable property of change orders. The purpose of this paper is to propose an effective framework for the change order management ... -
Effectiveness of Fabric-Reinforced Cementitious Matrix in Strengthening Reinforced Concrete Beams
( American Society of Civil Engineers (ASCE) , 2017 , Article)This paper reports on the efficiency of fabric-reinforced cementitious matrix (FRCM) in enhancing the flexural capacity and deformational characteristics of RC beams. In the main experimental part of the paper, 12 RC beams, ... -
Effectiveness of frcm system in strengthening rc beams in shear using hybrid nse/eb technique
( ISEC Press , 2018 , Conference Paper)This paper presents an experimental study on the efficacy of a recently introduced hybrid "near surface embedded/ externally bonded" NSE/EB fabric reinforced cementitious matrix (FRCM). Seven medium scale RC beams, deficient ...