Architecture Commons^™

The Hydration, Microstructure, And Mechanical Properties Of Vaterite Calcined Clay Cement (Vc³), Yaqiang Li, Yue Li, Hongyan Ma, Jiaqi Li

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Limestone (calcite) calcined clay cement (LC3) is a promising low-CO2 binder, but the low activity of calcite cannot compensate the reduction in clinker factor, resulting in low one-day strength and limiting its broad applications. As recent carbon capture and utilization technologies allow scalable production of vaterite, a more reactive CaCO3 polymorph, we overcome the challenge by introducing vaterite calcined clay cement (VC3), inspired by the vaterite-calcite phase change. In the present study, VC3 exhibits higher compressive strengths and faster hydration than LC3. Compared to hydrated LC3, hydrated VC3 exhibits increased amount of hemi- and mono-carboaluminate formation and decreased amount of …

Prediction Of Self-Consolidating Concrete Properties Using Xgboost Machine Learning Algorithm: Part 1–Workability, Amine El Mahdi Safhi, Hamed Dabiri, Ahmed Soliman, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The Interest in Implementing Self-Consolidating Concrete (SCC) in Major Construction Projects Has Increased Significantly in Recent Years. This Paper Reports the Results of an Extensive Survey of Experimental Data of More Than 1700 SCC Mixtures from over 100 Studies Published in the Last Decade. the Survey Included the SCC Mixture Proportioning, Key Fresh Properties Including Flowability, Passing Ability, and Segregation Resistance, as Well as Some of the Derived Properties (E.g., Paste Volume). the Statistical Analysis of the Reported Parameters Showed Wide Variations in Values. the Outcome of the Survey Indicates that SCC Mixture Design and Workability Properties Do Not Systematically …

Design And Performance Of Fiber-Reinforced Shrinkage Compensating Eco-Friendly Concrete, Kamran Aghaee, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Eco-Crete is an ecological and economical concrete that benefits from high packing density of solid materials and reduced paste. Eco-Crete can enhance the service life of structures by reducing the risk of shrinkage cracking. In this study, shrinkage mitigating materials included an expansive agent (EA), a shrinkage reducing admixture (SRA), and a lightweight sand (LWS), as well as steel and synthetic fibers were used to minimize the risk of cracking. A total of 35 fiber-reinforced Eco-Crete mixtures were prepared with 350 kg/m3 of cementitious materials and 55 % substitution of fly ash and slag. Key fresh and mechanical properties in …

Effectiveness Of The Different Eutectic Phase-Change Materials In Cooling Asphalt Pavement, Jiasheng Dai, Feng Ma, Zhen Fu, Jenny Liu, Chen Li, Yingjie Hou, Hanli Wu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Choosing a Phase-Change Material (PCM) Adapted to the Specific Phase-Change Temperature (Tm) Required for Each Temperature Condition is of Utmost Importance in Cooling Pavements. Eutectic Phase-Change Materials (EPCMs) Realize the Customization of the Desired Tm and Reduce the Difficulty of Matching PCMs. This Work Aims to Investigate the Effectiveness of a Group of Binary/ternary EPCMs with Tm Ranging from 30 to 60 ℃ and Melting Enthalpies of Around 200 J/g as Thermal Regulation Components for Different Asphalt. to Achieve This Goal, the Thermal and Rheological Properties of Phase-Change Asphalt Binders (PCAB) Were Evaluated by Differential Scanning Calorimeter, Thermogravimetric, Fourier Transform …

Truck Platooning Reshapes Greenhouse Gas Emissions Of The Integrated Vehicle-Road Infrastructure System, Huailei Cheng, Yuhong Wang, Dan Chong, Chao Xia, Lijun Sun, Jenny Liu, Kun Gao, Ruikang Yang, Tian Jin

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Reducing greenhouse gas emissions has turned into a pillar of climate change mitigation. Truck platooning is proposed as a strategy to lower emissions from vehicles on roads. However, the potential interactive impacts of this technology on road infrastructure emissions remain unclear. Here, we evaluate the decarbonization effects of truck platooning on the integrated vehicle-road system at a large-scale road network level, spanning 1457 road sections across North America. We show that truck platooning decreases emissions induced by truck operations, but it degrades faster the durability of road infrastructure and leads to a 27.9% rise in road emissions due to more …

Assessment Of Top-Down Adaptation Measures To Sea Level Rise Risk In Kafr Elsheikh Governorate, Egypt, Sara Khalil Elmorsy

Mansoura Engineering Journal

Egypt is considered one of the top five countries expected to be most impacted with a 1m SLR by the year 2100. This paper discusses top-down adaptation measures and efforts to protect Kafr Elsheikh Governorate from SLR risk, by reviewing several national environmental plans and frameworks. It reviews how the national adaptation plans are implemented on a local level and the overlaps and gaps between them. It shows many adaptation measures conducted in the area, most of them are to face beach erosion and inundation. It has been noted that there are no studies or governmental efforts to protect the …

Critical Review Of Building Usability In Historic Cairo, Ahmad Salah El-Din, Mohand Ali Foda, Sherif A. Sheta, Lamis El Gizawi

Mansoura Engineering Journal

The value of heritage buildings and their surroundings has developed due to the change of the first functional purpose for which they were built. Many old heritage areas as well as the urban surroundings of the old Seat of Government such as Salah El-Din Citadel in Cairo suffer from neglect and increasing deterioration of its urban settings. The study aims to formulate an integrated urban strategy to help conservation of the historic seats of government buildings and their surroundings to adapt with new functions and developed land use. The selected case of the study is Salah El-Din square in Historic …

Information Management And Bim Standards And Supports Inventory, Ryan Dempsey, Barry Mcauley, David Burke

Tools

The Digital Standards pillar consists of industry experts who champion the benefits of common rules, guidelines, and workflows that facilitate the improvement of information flow and information management across asset life cycles. Digital standards provide a common language that can be translated to technical specifications enabling clients, designers, contractors, and facilities managers, irrespective of their preferred tools, to communicate efficiently and reduce cost, rework, and disputes. Working closely with the Digital Procurement and Digital Education and Training pillars, this pillar is developing and delivering Irish Information Management/BIM (Digital Construction) guidelines for the sector.

This report summarises existing digital construction standards, …

International Information Management And Bim Best Practice Report, Ted Mckenna, Davitt Lamon

Reports

In order to inform the Digital Leadership and Cultural Change pillar of the Build Digital, a study of international best practice in digital adoption within the built environment sector globally was undertaken and is presented here-in. In order to identify key learnings for Ireland in the context of digital transformation, eight countries were included in this study, namely, Denmark, Finland, Netherlands, Germany, United Kingdom (UK), New Zealand, Australia and Singapore. These countries were selected for various reasons, including the level of digital maturity, the scale of the built environment sector and geographic spread. Key data for each country is included …

Digital Construction Annual Survey 2022 Report, Davitt Lamon, Ted Mckenna

Reports

The Annual Survey 2022 was conducted to assess the state of digital transformation in the Irish construction and built environment sector. This report presents the analysis of survey data, with a focus on implications for the Build Digital project and Build Digital’s five pillars: Digital Leadership & Cultural Change, Digital Standards, Digital Education & Training, Digital Procurement, and Sustainability & Circular Economy. Key findings from the survey indicated that a significant number of organisations have started their digital transformation journey, with many identifying themselves as proactive and possessing a clear business-focused strategy. However, a considerable cohort of respondents are keen …

Sustainability And Circular Economy Horizon Scan And Needs Analysis, Sadaf Dalirazar, Mark Kelly, Derek Sinnott, James O'Donnell

Reports

The construction industry plays a crucial role in addressing the climate crisis as it is the largest global consumer of raw materials and contributes significantly to global energy consumption and emissions. Considering the world’s continuous population growth and the imperative to address infrastructure and housing demands the construction sector needs to adopt further sustainable strategies in its activities to reduce the pressure on natural resources. In addition, the Architecture, Engineering, and Construction (AEC) sector is responsible for generating substantial amount of waste known as Construction and Demolition Waste (CDW), which is projected to increase due to the future construction developments. …

The Impact Of Smart Architecture Technologies On The Architectural Education System In Facing Crises, Marwa Ahmed Kamer Eldawla, Azza Sobhi Elsakka

Mansoura Engineering Journal

Countries have been exposed to many crises during the last five years, starting with the spread of the Corona epidemic and the subsequent epidemics in the world, and the recurrence of economic crises and others, which affected the architectural education system and with technological progress in all fields, especially in the field of architecture, it has appeared Smart architecture applications in its various aspects (the environmental aspect - the technical aspect - the economic aspect - the social aspect - the formative aspect), which can be used in the development of the architectural education system (physical equipment - human elements …

Performance Evaluation Of Millimeter Wave – Mimo System Based On Hybrid Precoding And Combining, Youstina.N. Samir, Fayez .W. Zaki, Hala .B. Nafea

Mansoura Engineering Journal

In 5G wireless communication network, the mmwave used in most applications to provides high data rates, low latency, high system capacity, and huge available bandwidths, but in multiuser case in mmwave frequency range occurs high path loss and decreasing the system performance. The efficient way to achieve high performance large antenna arrays is hybrid precoding techniques that shall be applied at the base stations (BS) and Mobile Stations (MS). It's found that the full digital precoding with large antenna arrays consumes high power and high hardware cost. In this paper, the current work presents low complexity hybrid precoding and combining …

Cement-Based Materials With Solid-Gel Phase Change Materials For Improving Energy Efficiency Of Building Envelope, Zhuo Liu, Jiang Du, Ryan Steere, Joshua P. Schlegel, Kamal Khayat, Weina Meng

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

This paper evaluated the cement-based materials incorporated with novel solid-gel phase change materials (PCMs) for improving the energy efficiency of building envelopes. This novel PCM is form-stable, which will not leak as solid-liquid PCMs do and not need encapsulation, and it features high energy-storage capacity. Experimental results showed that the thermal properties of cement-based materials were improved as the increase of PCM content. A 30% replacement of sand by volume with PCM can increase the latent heat of the mixture from around 0 to 7 J/g and decrease the thermal conductivity of PCM mortar based on the generalized self-consistent (GSC) …

Effect Of Type And Quantity Of Inherent Alkali Cations On Alkali-Silica Reaction, Pengfei Ma, Jiaoli Li, Jincheng Bai, Ying Zhuo, Lingyu Chi, Yanping Zhu, Zhenhua Shi, Hongyan Ma, Genda Chen

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this study, the macroscopical expansion induced by alkali-silica reaction (ASR) and its corresponding ASR products are investigated using ordinary Portland cement (OPC) mortar specimens with a gradient of boosted alkalis. Experimental results show that the expansion increases with the concentration of inherent alkalis. Sodium-boosted samples expand approximately three times as much as potassium-boosted samples. ASR gels that are present in aggregate veins are calcium-free and amorphous; the atomic ratios of ASR gels are nearly independent of the type and quantity of alkali cations. Aggregate ASR gel exudation occurs in high (≥2.5 %) sodium cases and produces potential Na-shlykovite. Crystalline …

Building Services Engineering September/October 2023

Building Services Engineering

No abstract provided.

Building Services Engineering November/December 2023

Building Services Engineering

No abstract provided.

Evaluation Of Residual Flexural Behavior Of Corroded Fiber-Reinforced Super Workable Concrete Beams, Jingjie Wei, Nima Farzadnia, Alfred Addai-Nimoh, Kamal Khayat

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This Study Investigates the Effect of Macro Synthetic Fiber (MSF) Volume and Crack Widths on Corrosion of the Reinforcing Bars and Residual Flexural Behavior of Fiber-Reinforced Super-Workable Concrete (FR-SWC) Beams Exposed to Accelerated Corrosion. FR-SWC Beams Prepared with 0, 0.33%, and 0.66% MSF Were Pre-Cracked at 0.2-, 0.4-, and 0.75-Mm Widths Before Corrosion Testing. the Controlled Crack Width Was Initiated in One Set of Beams that Were Then Unloaded. the Crack Width Was Maintained for Another Set of Beams during Corrosion Testing by Inserting a Shim. Test Results Showed that the Use of 0.33% and 0.66% MSF Reduced Crack Development …

Continuous Time Recurrent Network For Human Activity Detection, Abdallah Al Zubi

Durham School of Architectural Engineering and Construction: Dissertations, Thesis, and Student Research

Human activity detection is crucial to personalize the control of the building environment. For example, understanding certain human activities (e.g., walking, sitting, etc.) for an occupant in a building helps provide the proper thermal comfort control. However, these applications require large-scale neural networks that are challenging to implement and train.

In this thesis, we implemented a continuous-time recurrent neural network implementation (CTRNN) network that can solve real-time human activity detection with a smaller-size network. The CTRNN uses differential equations with a time constant to describe the neuron equations. It was implemented and trained for the first time using TensorFlow. Specifically, …

Spatio-Temporal Analysis Mapping Of Air Quality Monitoring In Cairo Using Sentinel-5 Satellite Data And Google Earth Engine, Sara Sameh, Fawzi Zarzoura, Mahmoud El-Mewafi

Mansoura Engineering Journal

Air pollutants including Nitrogen Dioxide (NO2), carbon monoxide (CO), and Sulphur dioxide (SO2) cause serious damage to human health and the environment. This research aims to assess built-up seasonal variations of air pollution maps over Cairo city in Egypt using remote sensing data. LST data was obtained from the MODIS Terra Satellite Data, specifically the MOD11A1 V6 product, from January to December 2022. The Sentinel-5 project utilizes the Tropospheric Monitoring Instrument (TROPOMI) sensor to capture images across different spectral bands, enabling precise monitoring of air pollution levels. The concentration data of NO2, CO, and SO2 were extracted from Sentinel-5P using …

The Indicators Of The Smartness To Assess Egypt's New Administrative Capital As A Smart City, Eman Metwally, Enas Samir, Marwa Ayman

Mansoura Engineering Journal

Smart cities have become a world-leading trend all over the globe, as they can induce an improved environment and a more acceptable quality of life. It is important to realize the main aspects of designing these cities and the variables affecting the extent of the smartness that the new cities can achieve. The indicators of achieving smartness vary from one country to another according to certain influential variables. So, to assess the extent of smartness that the New Administrative Capital “NAC” in Egypt had achieved, the research concluded a literature review for the concept of smart cities and the most …

Revolutionary Artificial Intelligence Architectural Design Solutions; Is It An Opportunity Or A Threat?, Mahmoud Desouki, T. A. El-Haddad, Bahaa El-Boshey

Mansoura Engineering Journal

Architectural design is uniquely complex, time-consuming work, so AI promises major benefits but also risks. Architectural design software programs have recently made an impressive development, especially those that use artificial intelligence. AI could transform design and construction with tools enabling generative design, parametric modeling, simulation, and optimization. However, AI’s impact remains unclear. Adoption depends on architects leveraging AI to augment judgment rather than replace it. Factors limiting AI include limited education/experience, threats to creative skills architects value, and unreliable AI design tools. While many see AI as an opportunity, not an endangerment, optimism and uncertainty prevail. AI may ultimately enhance …

Ehf-Fndm: An Efficient Hybrid Features Fake News Detection Methodology On Social Media, Haidy Samir Fahim, Asmaa Mohamed Al-Saied, Ahmed Shaban Samra, Abeer Twakol Khalil

Mansoura Engineering Journal

People are increasingly using social media to consume and share news. The inherent benefits of social media over traditional news media include its low cost and ease of access. In addition, publishing a news article requires less content censorship on social media. The rapid spread of "fake news" on social media, that is, news that contains intentionally false information, has a significant negative impact on society. For instance, false information about the coronavirus disease "2019" has spread around the world like a virus. Therefore, developing effective methods to detect fake news early has great importance. In this paper, the (Efficient …

Study The Structural Behavior Of Back-To-Back Cold-Formed Steel Columns With Different Types Of Web Stiffeners, Mahmoud Elnagar, Boshra A. El‑Taly, Dalia N. Elmenshawy, Ghada M. Hekal

Mansoura Engineering Journal

Six cold-formed steel columns with lipped channel and different types of web stiffener configurations were experimentally investigated under axial compression forces up to failure. The experimental results were compared with Finite Element; FE analysis using Abaqus program. The behavior characteristics; including the ultimate load, the axial shortening, and the failure mode have been analyzed. The test specimens were brake-pressed from cold-formed steel sheets with nominal thickness of 1.5 mm and then each two identical members were connected back-to-back by selfdrilling screws to form an I-shaped section with edge and web stiffeners. Tests were carried out on short columns with length …

Hydrogen Recovery From Refinery Units Off Gases Using Different Systems, Abdullaha.H. Abdullah, M.M. El-Halwany, Mahmoud H Mahmoud, Mohamed Gar Alalm

Mansoura Engineering Journal

Hydrogen recovery unit is important to remove H2S from the off gases generated from various units in refinery and recovers hydrogen. The recovered hydrogen reduces the quantity of hydrogen needed to be produced from hydrogen production unit required for hydro-treating processes in the refinery. The off gas generated from this unit is used as fuel gas. This is achieved at reasonable cost and with maximum protection to people, equipment, materials, and the environment. Proper operation will ensure that these goals are met. The required purity is (>99.9 mol%).

Evaluation Of Feasibility And Performance Of Foamed Fire-Resistant Coating Materials, Anyou Zhu, Hanli Wu, Yizhuang David Wang, Jenny Liu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A preliminary study found high-performance cement mortar, geopolymer mortar, and magnesium phosphate cement mortar (MPCM) have the potential as new fire-resistant materials. In this study, foam was added to these three fire-resistant materials to further improve their rheological, mechanical, and fire-resistant performance and reduce costs. Systematic design and experimental programs were conducted. The results showed the addition of foam enhanced workability, adhesiveness, and fire resistance, allowing the materials to withstand higher temperatures and further delay heat transfer. A mixture of 70% MPCM and 30% foam was identified as the optimum design, which could withstand 1000 °C with low heat transfer …

Covid-19 Detection Using Machine Learning, Amira M. Dawaba, Hanan M. Amer, Ahmed I. Saleh, M.A. Abo-Elsoud

Mansoura Engineering Journal

At the end of the year 2019, the world was hit by a drastic pandemic known as COVID-19. The lack of treatment has prompted research in all sectors to address it. Contributions in Computer Science mainly include the development of methods for the diagnostic testing, recognition, and assessment of COVID-19 cases. The most widely used techniques in this field are data science and machine learning (ML). This paper provides a new framework for Computer Aided Diagnosis System for Covid-19 (CADS-Covid-19) using the collected blood test data from patients. CADS consists of two main stages, which are: (I) the features selection …

Improving Rheological And Thermal Performance Of Gilsonite-Modified Binder With Phase Change Materials, Farshad Saberi K., Yizhuang David Wang, Jenny Liu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Gilsonite, as a type of natural asphalt binder, has been used to improve the high-temperature performance of regular asphalt binders. However, the addition of Gilsonite may compromise binders' low-temperature thermal cracking resistance. In this research, polyethylene glycol (PEG), as one type of the phase change materials (PCMs), was used as an innovative material to balance the impacts of Gilsonite on high and low performance of asphalt binders. The dosages of Gilsonite and PEG were first determined based on the materials' rheological behaviors at low temperatures. The performance of the PEG-Gilsonite-modified binder was then fully evaluated in terms of the resistance …

Power Allocation Stable Matching User Pairing (Smup) In Noma With Swipt, Bassem M. Saleh, Ahmed Elnakib, Sherif Kishk, Mohamed M. Ashour

Mansoura Engineering Journal

Non-orthogonal multiple access (NOMA) is a potentially spectral efficient approach for beyond-fifth-generation wireless networks. This paper investigates the joint user pairing, and power allocation problem in a cooperative-NOMA (CNOMA) with simultaneous wireless information and power transfer (SWIPT) capabilities. The purpose of this work is to enhance the sum-rate of users with poor channel conditions while guaranteeing residual energy for paired users with good channel conditions as compensation for their cooperation. To overcome this challenge, we divided it into two parts: power allocation (PA) and user pairing (UP). The particle swarm-optimization (PSO) method is utilized to address the PA issue, whereas …

Investigation Of Greening Façade And Retrofitting Strategies On Outdoor Thermal Comfort And Indoor Energy Consumption In New Assiut City, Egypt, Amr Sayed Hassan Abdallah, Randa M. A. Mahmoud

Mansoura Engineering Journal

This study aims to investigate the effect of greening façades and roofs on the outdoor thermal comfort of residences and indoor energy consumption within the context of different retrofitting strategies. The proposed methodology consists of two main stages, first Envi-met will be used to model the base case and study the effect of green walls and roofs on outdoor thermal comfort, then DesignBuilder will be used to estimate the annual energy consumption of the base case and six retrofitting strategies. An investigation was performed for a new residential complex Youth housing sector in New Assiut City as a model of …