Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
Topic Review
Crack Healing Technologies of Asphalt Pavement
Crack healing has been a key area of asphalt pavement research. Energy supply technologies (induction and microwave heating) have demonstrated significant efficacy in enhancing the crack healing capability of asphalt pavement, particularly in microcracks. Crack healing technologies can effectively prolong the service life of asphalt pavement, thereby further reducing the damage to the environment caused by road engineering, reducing energy consumption and CO2 emissions.
  • 772
  • 20 Jun 2023
Topic Review
Prefabrication in Construction Industry
Prefabrication is a well-established method that is widely accepted and executed across many countries around the globe. Much work goes into prefabrication projects that span across several project phases. Some of the most unique and important aspects are acquiring raw materials, manufacturing, transporting, and installing prefabricated elements on a site. Post-occupancy, the study of the on-site performance of end products, validates the achievement of the expected design objectives, furthering the development of the project processes, and also helps identify research voids that must be filled. Technology has a way of expanding as it upgrades itself by virtue of growth in research and development areas. There is an ever-growing demand for the adaptation of new technologies in the prefab industry. Many stakeholders such as the clients, contractors, industry practitioners (e.g., architects/designers), and end-users are involved in this process, and it is important to consider their perspectives.
  • 769
  • 04 Jan 2023
Topic Review
Sustainable Smoke Extraction System
Smoke extraction systems, either static with natural ventilation, or dynamic with mechanical ventilation are required to keep smoke layer at high levels in many tall atria. It is observed that a design fire with high heat release rate (HRR) is commonly used for designing natural vents, but a low HRR is used for mechanical ventilation system. This will not produce a sustainable environment. A sustainable smoke extraction system is proposed by combining natural and mechanical ventilation.
  • 758
  • 24 Jul 2021
Topic Review
New Austrian Tunnelling Method
The New Austrian tunneling method (NATM), also known as the sequential excavation method (SEM) or sprayed concrete lining method (SCL), is a method of modern tunnel design and construction employing sophisticated monitoring to optimize various wall reinforcement techniques based on the type of rock encountered as tunneling progresses. This technique first gained attention in the 1960s based on the work of Ladislaus von Rabcewicz, Leopold Müller, and Franz Pacher between 1957 and 1965 in Austria. The name NATM was intended to distinguish it from earlier methods, with its economic advantage of employing inherent geological strength available in the surrounding rock mass to stabilize the tunnel wherever possible rather than reinforcing the entire tunnel. NATM/SEM is generally thought to have helped revolutionise the modern tunneling industry. Many modern tunnels have used this excavation technique. The works built by the Sequential Excavation Method are very attractive from the economic point of view and reasonable in karst conditions.
  • 756
  • 30 Sep 2022
Topic Review
Guidelines for Measuring Particulate Matter at Construction Sites
PM is a set of air pollutants consisting of solid or liquid particles. These particles are suspended in the atmosphere, but they can also be sedimented on surfaces. Despite a number of differences, PM is mainly classified by its aerodynamic diameter into three groups: (1) fine or breathable particles (PM2.5) with aerodynamic diameter up to 2.5 µm, (2) coarse or inhalable particles (PM10) with an aerodynamic diameter up to 10 µm, and (3) total suspended particles (TSP) that have a wide particle size range, typically with an equivalent aerodynamic cutting diameter of 100 µm.
  • 755
  • 19 Apr 2022
Topic Review
SuPerPave® Recycled Asphalt Mix-Design Guidelines
Superpave® recycled asphalt mix-design guidelines are a reference for engineers and researchers concerned with reusing RAP (Reclaymed Asphalt Pavement) in asphalt concrete mixtures designed according to the Superpave® system.
  • 753
  • 01 Sep 2021
Topic Review
Sense of Gain and Rural Infrastructures
Rural infrastructure is not only the foundation for the development of various rural undertakings but also an integral part of the rural economic system. Its construction and operation are closely related to farmers’ quality of life. However, owing to the urban–rural dual structure in many countries in the world, there is still a big gap between the level of rural infrastructure and that of cities, which affects the interests of farmers and restricts the sustainable development of rural areas. The sense of gain can reveal shortcomings in the rural infrastructure from the perspective of farmers, helping to suggest rapid and accurate improvements according to the farmers’ feelings.
  • 753
  • 24 May 2022
Topic Review
BIM
BIM is defined as the “construction of a model that contains the information about a building from all phases of the building life cycle” and defined by as “a digital representation of physical and functional characteristics of a facility. As such, it serves as a shared knowledge resource for information about a facility forming a reliable basis for decisions during its life cycle from inception onward”.
  • 749
  • 19 May 2022
Topic Review
Innovating the Construction Life Cycle through BIM/GIS Integration
The construction sector is in continuous evolution due to the digitalisation and integration into daily activities of the building information modelling approach and methods that impact on the overall life cycle. This study investigates the topic of BIM/GIS integration with the adoption of ontologies and metamodels, providing a critical analysis of the existing literature. Ontologies and metamodels share several similarities and could be combined for potential solutions to address BIM/GIS integration for complex tasks, such as asset management, where heterogeneous sources of data are involved. 
  • 744
  • 27 Jan 2022
Topic Review
Safety Issues Buckling Steel Structures Improving Historical Methods
Buckling of structural elements is a phenomenon that has great consequences on the bearing capacity of structures. Historically, there have been serious buckling-related structural accidents that have resulted in loss of human lives and high material costs. 
  • 740
  • 28 Mar 2022
Topic Review
Geothermal Energy
Geothermal heat have a widespread diffusion as they are able to deliver relatively higher energy output than other systems for building air-conditioning. The exploitation of low-enthalpy geothermal energy, however, presents crucial sustainability issues. 
  • 733
  • 05 Nov 2021
Topic Review
Sustainable Concrete Quality Management
The development of a concrete mixture design process for high-quality concrete production with sustainable values is a complex process because of the multiple required properties at the green/hardened state of concrete and the interdependency of concrete mixture parameters. A new multi-criteria decision making (MCDM) technique based on Technique of Order Preference Similarity to the Ideal Solution (TOPSIS) methodology is applied to a fuzzy setting for the selection of concrete mix factors and concrete mixture design methods with the aim towards sustainable concrete quality management. Three objective properties for sustainable quality concrete are adopted as criteria in the proposed MCDM model. The seven most dominant concrete mixture parameters with consideration to sustainable concrete quality issues, i.e., environmental (density, durability) and socioeconomic criteria (cost, optimum mixture ingredients ratios), are proposed as sub-criteria. Three mixture design techniques that have potentiality to include sustainable aspects in their design procedure, two advanced and one conventional concrete mixture design method, are taken as alternatives in the MCDM model. The proposed selection support framework may be utilized in updating concrete design methods for sustainability and in deciding the most dominant concrete mix factors that can provide sustainable quality management in concrete production as well as in concrete construction. The concrete mix factors found to be most influential to produce sustainable concrete quality include the water/cement ratio and density. The outcomes of the proposed MCDM model of fuzzy TOPSIS are consistent with the published literature and theory. TheDOE method was found to be more suitable in sustainable concrete quality management considering its applicable objective quality properties and concrete mix factors.
  • 730
  • 26 Oct 2020
Topic Review
Resistance of Concretes to External Chlorides
Corrosion of steel reinforcement due to chloride attack remains a major reinforced concrete durability concern. The problem is prevalent for concrete structures located within marine environments or frost-prone locations where chlorides containing de-icing salts are used. 
  • 728
  • 10 Jan 2023
Topic Review
Application of Waste Powder in Pervious Concrete
According to the literature, the annual global consumption of concrete had reached 25 billion tons in 2009. Cement is an important component of concrete, and the global cement production is approximately 4.1 billion tons per year. However, the production of 1 ton of Portland cement can emit between 730–850 kg of CO2. Waste powder is mainly derived from the waste of industrial production or volcanic activities. If not reutilized, such waste powder will cause serious environmental problems.
  • 724
  • 04 May 2023
Topic Review
Applications of Sustainable Hybrid Energy Harvesting
The potential usage of self-powered wireless sensor (WSN) systems has drawn a lot of attention to sustainable energy harvesting. Hybrid energy harvesting involves collecting energy from multiple sources and converting it into electrical energy using various transduction mechanisms. By properly integrating different energy conversion technologies, hybridization can significantly increase power outputs and improve space utilization efficiency.
  • 719
  • 28 Nov 2023
Topic Review
Power Line Failures/Faults and Wildfire Initiation Mechanisms
Wildfires are one of the most hazardous natural disasters in Australia in terms of fatalities, property damage and financial losses. Events of catastrophic wildfires are recorded across the world including in the United States and Canada. Failures along power distribution infrastructure and network faults have been identified as some of the causes for the initiation of wildfires. Thus, it is critical to better understand the mechanisms and the potential prevention strategies for wildfires caused by power distribution system faults.
  • 717
  • 15 Jun 2023
Topic Review
Durability of Recycled Fine Aggregate Concrete
In recent years, scholars around the world have worked on improving recycle aggregates in concrete and broadening the scope of applications of recycled concrete. The findings of research on the effects of recycled fine aggregates (RFAs) on the permeability, drying shrinkage, carbonation, chloride ion penetration, acid resistance, and freeze–thaw resistance of concrete has been reviewed. The results show that the content of old mortar and the quality of recycled concrete are closely related to the durability of prepared RFA concrete. 
  • 711
  • 28 Mar 2022
Topic Review
Finite Element Modelling and Updating of Cable-Stayed Bridges
Finite element (FE) model updating is a well-recognised approach for Structural Health Monitoring (SHM) purposes, as an accurate model serves as a baseline reference for damage detection and long-term monitoring efforts. One of the many challenges is the development of the initial FE model that can accurately reflect the dynamic characteristics and the overall behaviour of a bridge. Given the size, slenderness, use of long cables, and high levels of structural redundancy, precise initial models of long-span cable-stayed bridges are desirable to better facilitate the model updating process and to improve the accuracy of the final updated model. To date, very few studies offer in-depth discussions on the modelling approaches for cable-stayed bridges and the methods used for model updating. As such, this article presents the latest advances in finite element modelling and model updating methods that have been widely adopted for cable-stayed bridges, through a critical literature review of existing research work.
  • 710
  • 24 Jan 2022
Topic Review
BIM-GIS-IoT-Based System
Integrate Building Information Modeling (BIM)  and Internet of Things (IoT) technologies into a geographic information system (GIS) to achieve scientific and reasonable recycling for excavated soil, which could collaboratively manage information from the government, developers, construction enterprises, transportation companies, and recycling facilities to meet the requirement for the specific communication, analysis, decision-making, and recycling plan preparation of the excavation project. In addition, it provides a systematic method and applies relevant information technology required to recycle the excavated soil effectively in the excavation project. The system is intended to provide a fundamental digital construction model for excavated soil recycling, regardless of whether it is invoked by the existing application software or a program tailored to the demands of a specific organization or stakeholders. It makes excellent use of the rich information stored in digital information models, may create a mapping to the input data required by the application, or automatically convert the basic model to facilitate the specific analysis. This system can not only serve as an excavation project simulation tool before construction, but also serve as a tool to recycle the excavated soil and cost evaluation.
  • 710
  • 19 Apr 2022
Topic Review
Influence of Web Holes on Cold-Formed Steel Members
The use of cold-formed steel (CFS) members in structural engineering has been on the increase recently due to a wide range of benefits. The placement of electrical and/or plumbing installations within the floor or wall thickness requires that members are being manufactured with holes along the web, inevitably affecting their resistance.
  • 708
  • 12 Aug 2022
  • Page
  • of
  • 23
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
ScholarVision Creations
Feedback