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Topic Review
Energy-Efficiency Passive Strategies for Mediterranean Climate
The main objective and function of passive solutions are to contribute to the natural cooling or heating of the building. They are constructive technologies integrated within buildings. The exchange of thermal energy takes place by natural means that, when dimensioned correctly, can significantly reduce a household’s energy bills. Several passive strategies, namely natural ventilation, shading devices, overhangs, and daylighting, associated with the building envelope’s characteristics are important passive design parameters that should be given particular attention to highlighting the potential of buildings for energy efficiency.
  • 1.7K
  • 13 May 2022
Topic Review
Road Infrastructure Maintenance Management
Management of nonurban road network maintenance is a complex management process that requires the inclusion of many technical, economic, and other characteristics of the problem, as well as the continuous application of new knowledge and approaches, to maintenance management. To effectively manage the maintenance of the road network in conditions of limited financial resources, maintenance is examined through three interrelated management functions of planning: implementation, monitoring, and maintenance control. 
  • 1.7K
  • 20 Jun 2022
Topic Review
Framework of Smart Water System
Throughout the past years, governments, industries, and researchers have shown increasing interest in incorporating smart techniques, including sensor monitoring, real-time data transmitting, and real-time controlling into urban water systems. However, the design and construction of such a smart water system are still not quite standardized for practical applications due to the lack of consensus on the framework. The major challenge impeding the wide application of the smart water network is the unavailability of a systematic framework to guide real-world design and deployment. A new and comprehensive smart water framework, including definition and architecture, was proposed in this article. Two conceptual metrics (smartness and cyber wellness) were defined to evaluate the performance of smart water systems. This work calls for broader collaborations in the community of researchers, engineers, and industrial and governmental sectors to promote smart water applications for addressing the increasing water quantity and quality challenges.
  • 1.7K
  • 03 Feb 2022
Topic Review
Using Waste Plastics as Asphalt Modifier
The use of waste products in the production of asphalt binders and asphalt mixtures has become widespread due to economic and environmental benefits. In particular, the use of recycled waste plastic in asphalt binders and mixtures is gaining more attention. Overall, the incorporation of plastic waste into asphalt mixtures can significantly improve high-temperature performance and has potential economic and environmental benefits. The performance of modified asphalt is highly dependent on multiple factors, such as waste sources, waste plastic dosages, blending conditions, and the pretreatment methods for waste plastic.
  • 1.7K
  • 28 Mar 2022
Topic Review
Fiber-Reinforced Polymer Composites in the Construction of Bridges
Fiber-reinforced polymer (FRP) composites are two-phase materials consisting of a base material and filler material. Base material is referred as a matrix or a binder material. This is a polymer (plastic), either thermoset or thermoplastic. Polymer matrices are natural or synthetic. The latter kind is petrochemical-based and includes polyester, polypropylene (PP), polyethylene (PE) and epoxy. Due to its specific mechanical properties, a polymer matrix needs to be reinforced by filler material. FRP composites consist of fibers or other reinforcing material, which provide sufficient strength in one or more directions. 
  • 1.7K
  • 05 May 2022
Topic Review
Historic Timber Structures with Stainless Steel
The use of stainless steel components, particularly in new constructions, has experienced a huge increase in recent times. Stainless steel is now widely used for both non-structural applications and as ribbed reinforcement bars for concrete, members (beams, columns, ties, etc.) in trusses, bridges and buildings. Similar to structural carbon steel, stainless steel elements can be hot rolled and fabricated or cold rolled formed. 
  • 1.7K
  • 28 Mar 2022
Topic Review
Colloidal Silica and Geotechnical Properties of Liquefiable Soils
Colloidal silica (CS) is a kind of nanomaterial used in soil/rock grouting techniques in different branches of civil engineering. CS grout is chemically and biologically inert and, when injected into a subsoil, it can form a silica gel and stabilize the desired soil layer, thus representing an attractive, environmentally friendly alternative to standard chemical grouting techniques.
  • 1.7K
  • 23 Dec 2021
Topic Review
Durability of Foam Concrete
Foam concrete is a type of concrete that is produced by locking air voids in the mortar with the help of a suitable foaming agent and is classified as lightweight concrete. It has low self-weight, minimum aggregate consumption (no coarse aggregate is used), high fluidity, controlled low strength and thermal insulation. The properties of foam concrete are affected by the production method and the materials used. Unlike other porous lightweight concrete, prefabricated foams with foaming agents are added to fresh cement paste and mortar. The air pores brought by the foams constitute 10–90% by volume of the hardened body. This porous structure forms the basis of the mechanical properties, thermal conductivity, acoustic and durability properties of foam concrete. One of the advantages of foam concrete is its weight reduction (up to 80%) compared to conventional concrete. The air bubbles are evenly distributed in the foam concrete body. The pore structure may be affected during the mixing, transportation and placement of fresh concrete, so it should have fixed walls. Air bubbles range in size from approximately 0.1 to 1 mm. The density of foam concrete is mainly affected by the amount of foam and varies between 400 and 1600 kg/m3. It can be used for structural, partitioning, insulation and filling applications with excellent acoustic/thermal insulation, high fire resistance, lower raw material costs, easier pumping and finally no compaction, vibration or leveling.
  • 1.7K
  • 17 Jun 2022
Topic Review
Carbonation and Its Mechanisms in Reinforced Concrete Structures
Reinforced concrete (RC) has been commonly used as a construction material for decades due to its high compressive strength and moderate tensile strength. However, these two properties of RC are frequently hampered by degradation. The main degradation processes in RC structures are carbonation and the corrosion of rebars. The scientific community is divided regarding the process by which carbonation causes structural damage. Some researchers suggest that carbonation weakens a structure and makes it prone to rebar corrosion, while others suggest that carbonation does not damage structures enough to cause rebar corrosion.
  • 1.7K
  • 11 May 2022
Topic Review
Groundwater–Surface Water Interaction
Groundwater and surface water, though thought to be different entities in the past, are connected throughout the different landforms of the world. The interaction between groundwater and surface water (GW–SW) is responsible for a phenomenon like contaminant transport, and understanding it helps to estimate the effects of climate change, land use on chemical behavior, and the nature of water. 
  • 1.7K
  • 18 Apr 2023
Topic Review
Rainfall Threshold
Sediment-related disaster is one of the most significant natural disasters, from the perspective of magnitude, damage and loss to human life and infrastructure, and disruption to socio-economic activities. The rainfall threshold is the condition or amount of rainfall that is likely to initiate sediment-related disasters, it is agreed that the rainfall threshold is the most significant tool to predict impending occurrences.
  • 1.7K
  • 26 Oct 2022
Topic Review
Urban Water Consumption
Urban water (here referred as urban water consumption) is defined by European Environmental Agency as the water abstracted for urban purposes which include domestic uses (households), small industries, municipal services, and public gardening [EEA]. Over the last three decades, the increasing development of smart water meter trials and the rise of demand management has fostered the collection of water demand data at increasingly higher spatial and temporal resolutions, especially for the domestic sector (i.e., household water use). Counting these new datasets and more traditional aggregate water demand data, the literature is rich with heterogeneous urban water consumption datasets. They are characterized by heterogeneous spatial scales—from urban districts, to households or individual water fixtures—and temporal sampling frequencies—from seasonal/monthly up to sub-daily (minutes or seconds).  This entry is based on  the review paper "Urban Water Consumption at Multiple Spatial and Temporal Scales. A Review of Existing Datasets" by Di Mauro et al. 2021 The review analyzes 92 water demand datasets and 120 related peer-review publications compiled in the last 45 years. The reviewed datasets are classified and analyzed according to the following criteria: spatial scale, temporal scale, and dataset accessibility. This research effort builds an updated catalog of the existing water demand datasets to facilitate future research efforts end encourage the publication of open-access datasets in water demand modelling and management research.
  • 1.7K
  • 19 Mar 2021
Topic Review
Mechanical Properties of Geopolymer Concrete
Geopolymer is essentially different from the conventional concrete which consists of hydraulic cement as a binder.
  • 1.6K
  • 12 Sep 2021
Topic Review
Titanium in Civil Engineering
Titanium has exceptional durability, very high specific strength, a thermal expansion coefficient similar to construction materials, low weight density, and its cost has drastically decreased over the last decades. One of the main requirements in conservation engineering is the durability of the retrofit materials and the reversibility of interventions, and a possible interesting solution is the use of titanium alloys coupled with inorganic matrices made of low-cement or lime mortars. Titanium has recently been used to reinforce important masonry and archeological monuments, but little is known about this. Its use is increasing in conservation engineering without adequate knowledge of its characteristics, grades, and properties.
  • 1.6K
  • 13 Jul 2022
Topic Review
Importance of Digitalization in the Construction Industry
The construction industry is among the least digitized industries, and the lack of innovation in construction project management practices has led to decreases in productivity. The European Directives for Public Procurement are pushing the entire construction supply chain towards more radical digital transformations over the next years, and project managers are left with the difficult task to harness ICT for the involvement and management of project stakeholders. This entry is based on the article "Realizing the Need for Digital Transformation of Stakeholder Management: A Systematic Review in the Construction Industry" recently published in the Sustainability journal. 
  • 1.6K
  • 06 Dec 2021
Topic Review
Safety and Barriers
The Architecture, Engineering, and Construction (AEC) industry is one of the most dangerous industries due to its unique nature. Safety is a critical issue in developed and developing countries.  Barriers that hinder the implementation of safety in projects and ways to improve safety performance was illustrated in this entry.
  • 1.6K
  • 20 Apr 2021
Topic Review
Improvement in Durability and Service of Asphalt Pavements
Develop a pavement design procedure that allows calibrating the design variables of asphalt pavements using regionalized conditions, to obtain efficient pavement performance for developing countries with limited resources and data.
  • 1.6K
  • 13 May 2022
Topic Review
Concrete Reinforced with Sisal Fibers
Concrete is a commonly used building material; however, it is subject to abrupt failure and limited energy absorption when yielding. The use of short discrete fibers has displayed a lot of potential in overcoming these issues. Sisal is a natural fiber that is renewable, inexpensive, and readily accessible. SSF is a potential reinforcement for use in concrete because of its cheap cost, low density, high specific strength and modulus, negligible health risk, easy accessibility in certain states, and renewability. 
  • 1.6K
  • 12 Aug 2022
Topic Review
Carbonation of Concrete
As one of the major causes of concrete deterioration, the carbonation of concrete has been widely investigated over recent decades. In recent years, the effect of mechanical load on carbonation has started to attract more attention. The load-induced variations in crack pattern and pore structure have a significant influence on CO2 transport which determines the carbonation rate. 
  • 1.6K
  • 07 Dec 2021
Topic Review
Neelum–Jhelum Hydroelectric Project
During underground construction, the behavior of the ground is influenced by characteristics of the rock mass with situ stresses and ground water, cross section of the excavation area, excavation method, and the rate of excavation. These fundamental features are considered to ensure the support and stability of underground excavations and achieve long-term successful operation. However, the ground composition of the Himalayas hinders tunnel excavation, especially in case of mechanized tunneling; this causes time and cost overruns. This study has reviewed the recently completed Neelum–Jhelum Hydroelectric Project; the project complexities, geological environments involving significant overburden and tectonic stresses, and effects of the excavation method on tunnel stability were analyzed. 
  • 1.5K
  • 22 Mar 2021
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