Nanotechnology Applications in the Construction Industry

2016 ◽  
pp. 111-140 ◽  
Author(s):  
Iman Mansouri ◽  
Elaheh Esmaeili
Keyword(s):  
Construction Industry ◽  
Material Properties ◽  
Construction Materials ◽  
Cementitious Materials ◽  
Extensive Literature ◽  
Current Scenario ◽  
Potential Benefits ◽  
Improved Performance ◽  
Strength And Durability ◽  
Selection Of

Nanotechnology refers to the understanding and manipulation of materials on the nanoscale (<100 nm). This can lead to marked changes in material properties and can result in improved performance and new functionality. Nanomaterials with properties such as corrosion resistance, and strength and durability are of particular interests to construction professionals, because, these properties directly affect the selection of construction materials, erection methods, and on-site handling techniques. Applying nanotechnology to construction, in some cases, may result in visionary and paradigm-breaking advances. The incorporation of nanomaterials can improve structural efficiency, durability and strength of cementitious materials and can thereby assist in improving the quality and longevity of structures. This chapter tries to analyze nanotechnology in the context of construction and explores the current scenario of nanotechnology in the construction industry. In order to identify the potential benefits and existing barriers, an extensive literature review is conducted.

Applications of Nanomaterials in Construction with an Approach to Energy Issue

2011 ◽  
Vol 261-263 ◽  
pp. 509-514 ◽  
Author(s):  
Parisa Ahadi
Keyword(s):  
Renewable Energy ◽  
Energy Conservation ◽  
Construction Industry ◽  
Material Properties ◽  
Construction Materials ◽  
Low Energy ◽  
Energy Issue ◽  
Low Energy Buildings ◽  
High Flexibility ◽  
Key Resources

Construction industry is one of the sectors that would highly benefit from Nanomaterials with new functionalities and enhanced performances. The use of Nanomaterials in this industry should be considered not only for enhancing material properties and functions but also in the context of energy saving. This paper, aims to keep special attention on low energy buildings which utilizes the key resources of energy or construction materials in a more efficient way than the conventional buildings. Using Nanomaterials in these cases include harvest solar or other forms of renewable energy and energy conservation. The paper presents also applications of more efficient and cheaper solar energy collectors with high flexibility, heat absorbing windows, energy coatings and Nanoinsulations. The flexible insulation allowed the panels to be thin enough to fit within the existing window casements without need to modify window and roof fixtures. The NanoHouse represents a successful method of explaining what Nanomaterials are and how they work.

scholarly journals A new area of ​​application and research in bio-processes: Biotechnologies in civil construction

Bionatura ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 1072-1077
Author(s):  
A. Barberán ◽  
D. Chávez ◽  
A. Cajas ◽  
MC Egas ◽  
M. Criollo ◽  
...  
Keyword(s):  
Construction Industry ◽  
New Technologies ◽  
Low Cost ◽  
Construction Materials ◽  
New Methods ◽  
Engineering Discipline ◽  
Concrete Production ◽  
Conventional Production ◽  
Cement And Concrete ◽  
Selection Of

Construction Biotechnology is a new scientific and engineering discipline that has been developing exponentially during the last decade. The main directions of this discipline are 1- the selection of adequate microorganisms, 2- development of micro-processed construction bioprocesses as well as 3- the development of new biotechnologies to produce construction biomaterials. Products resulting in construction biotechnologies are low-cost, sustainable, and environmentally friendly microbial biocements for the improvement of the construction terrain. The bioagents used in construction biotechnologies are pure or enrichment cultures of native microorganisms or microorganisms isolated and activated from the soil. Biotechnologically produced construction materials and microbial mediated construction technologies have many advantages compared to conventional construction materials and processes. The current technological landscape offers an objective vision and perspective of how microbes are used in the construction industry as additives for cement and concrete so that these new technologies be used in different provinces of Ecuador. In that sense, the current situation of cement and concrete production in Ecuador is briefly described to have an overview of the applicability of the new methods based on biogenic materials and the environmental advantages of the creation of construction biomaterials over conventional production.

Evaluation of Critical Factors Influencing Resource Allocation in Indian Construction Projects

2012 ◽  
Vol 174-177 ◽  
pp. 2774-2777
Author(s):  
M. Paranthaman Venkatesh ◽  
S. Muthalvan Renuka ◽  
Balasubramanian Malathi ◽  
C. Umarani
Keyword(s):  
Resource Allocation ◽  
Resource Management ◽  
Construction Industry ◽  
Construction Projects ◽  
Construction Materials ◽  
Extensive Literature ◽  
Critical Factors ◽  
Related Factors ◽  
Total Contribution ◽  
Factors Influencing

The problem of resource allocation in the construction industry is a global phenomenon. Resource allocation plays an important role in Indian construction projects. The effective resource management is a prerequisite for project success. This paper aims to identify the critical factors that influence the resource allocation in Indian construction projects in private and public sectors. From extensive literature survey and based on experts’ opinion, forty four factors influencing resource allocation in Indian construction industry were identified. For the quantitative confirmation of the effectiveness of factors influencing resource allocation during the construction stage of a project, a questionnaire survey was conducted with construction professionals like clients, consultants and contractors. Subsequently the collected data was analyzed using the descriptive statistical method and the factors were measured and ranked under each group with Impact index. The findings reveal that the eleven top most critical factors such as materials selection and changes in types and specifications during construction, improper maintenance of equipment, shortage in construction materials, financing between the owner and contractor, force majeure (Fire, Wind damage, Hurricane, Flood), shortage of labours , poor procurement of materials, skill of labours, available of equipment and poor quality of materials. Results show that there is relatively highest agreement between contractor and consultant of about 66.7%. The resources like manpower, materials and equipment related factors are having a total contribution of about 60% and other groups are having of about 40% in resource allocation. However this paper presents recommendations for a better resource management techniques and procedures which can be adopted during conceptual , detailed planning and execution phases of the construction project.

scholarly journals Analysis of the Behavior of Carbon Nanotubes on Cementitious Composites

2013 ◽  
Vol 2013 ◽  
pp. 1-17 ◽  
Author(s):  
Jorge Fernandes de Morais ◽  
Assed Naked Haddad ◽  
Laia Haurie
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Construction Industry ◽  
Cementitious Materials ◽  
Cementitious Composites ◽  
Science And Engineering ◽  
Nondestructive Tests ◽  
Deformation Properties ◽  
New Material ◽  
Strength And Durability

Nanotechnology has brought significant innovations in science and engineering. Carbon nanotube has been considered a new and outstanding material in nanoscience field with great potential application in the construction industry. The main objective of this study is to analyze the behavior of cementitious materials produced with the insertion of carbon nanotubes of multiple walls in different concentrations and compare their physic-mechanical properties with plain mortar. This research covers the examination of nanoscale cement products and the use of carbon nanotubes to increase the strength and durability of cementitious composites. Three different ratios of carbon nanotubes have been searched: 0.20, 0.40, and 0.60%. To evaluate the mechanical properties of the samples, destructive and nondestructive tests were carried out to obtain compressive strength, tensile strength by diametrical compression, and dynamic modulus of elasticity as well as to determine their deformation properties. Methods of instrumentation such as scanning electron microscopy and porosity were also used in the analysis of microstructure of the materials. The study presents graphs, tables, and figures describing the behavior of CNT added to mortars samples, allowing a better understanding of the use of this new material in the construction industry.

scholarly journals The Role of Blockchain in Improving the Processes and Workflows in Construction Projects

2021 ◽  
Vol 11 (19) ◽  
pp. 8835
Author(s):  
Awsan Mohammed ◽  
Ahmad Almousa ◽  
Ahmed Ghaithan ◽  
Laith A. Hadidi
Keyword(s):  
Construction Industry ◽  
Construction Projects ◽  
Extensive Literature ◽  
Public And Private ◽  
Blockchain Technology ◽  
Information Models ◽  
Building Information ◽  
Research Findings ◽  
Potential Benefits ◽  
Public And Private Stakeholders

Construction is prone to disputes similar to other business dealings. Construction delays are the most common causes of disputes in construction projects. Most of the time, construction projects are delayed not only because of a lack of funding, but also because of disputes between the contractor and the client. Blockchain Technologies (BCT) have the potential to make the construction industry more efficient, inexpensive, or completely automated. In this paper, an extensive literature review is conducted to locate authoritative sources about the most common applications of blockchain technology in the construction industry. The study aims to identify the potential, benefits, challenges, and uses of blockchain in the construction industry. Furthermore, this paper explores the roles of BCTs in improving and enhancing the workflow efficiency of construction projects. In addition, this paper identifies the major causes of disputes and delays in the construction industry. These causes were used as the baseline for identifying the most relevant solutions provided by blockchain technologies to develop a matching model to find applicable solutions from the literature cases to resolve the identified causes of disputes and delays. The research findings indicated that the common cases of BCT including administrative purposes, smart contracts for transactions, permanent transaction records, and permanent ownership records contribute to solving the causes of disputes and delays in construction projects. The findings of this paper recommend that both public and private stakeholders in the construction sector adopt blockchain technologies and blockchain-based Building Information Models (BIMs) to improve construction workflows and processes.

scholarly journals A Review on Application of Formaldehyde in Cement-Based Materials

2021 ◽  
Keyword(s):  
Construction Industry ◽  
Construction Material ◽  
Cementitious Materials ◽  
Flow Strength ◽  
Durability Properties ◽  
Cement Based Materials ◽  
Strength And Durability ◽  
The Impact ◽  
Flooring Materials ◽  
Nose And Throat

Abstract. Formaldehyde is environment contamination, which causes irritation in the eyes, nose, and throat with concentration above 1.0ppm. But still, it is used as a construction material as an admixture and furthermore to make paints, adhesives, pressed wood, and flooring materials, etc. This paper reviews the impact of formaldehyde in the cement on flow, strength, and durability properties. In this most of the researchers studied the water reducing nature of formaldehyde-based cementitious materials (FBCM) because of its repulsive property, that can ensure improved workability and provides good mechanical strength. Finally, the challenges in the application of formaldehyde in cement-based materials are discussed to conclude some future scope in the field of the construction industry to use formaldehyde in cement.

Energy Efficiency Analysis in ERA using NFL-BA Algorithm

2020 ◽  
pp. 340-348
Author(s):  
Palky Mehta ◽  
H. L. Sharma
Keyword(s):  
Cluster Head ◽  
Vital Role ◽  
Wireless Sensor ◽  
Energy Usage ◽  
Cluster Heads ◽  
Comparison Results ◽  
Current Scenario ◽  
Energy Efficiency Analysis ◽  
Selection Of

In the current scenario of Wireless Sensor Network (WSN), power consumption is the major issue associated with nodes in WSN. LEACH technique plays a vital role of clustering in WSN and reduces the energy usage effectively. But LEACH has its own limitation in order to search cluster head nodes which are randomly distributed over the network. In this paper, ERA-NFL- BA algorithm is being proposed for selects the cluster heads in WSN. This algorithm help in selection of cluster heads can freely transform from global search to local search. At the end, a comparison has been done with earlier researcher using protocol ERA-NFL, which clearly shown that proposed Algorithm is best suited and from comparison results that ERA-NFL-BA has given better performance.

scholarly journals Consensus for the General Use of Equine Water Treadmills for Healthy Horses

Animals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 305
Author(s):  
Kathryn Nankervis ◽  
Carolyne Tranquille ◽  
Persephone McCrae ◽  
Jessica York ◽  
Morgan Lashley ◽  
...  
Keyword(s):  
Working Group ◽  
Best Practice ◽  
Treadmill Exercise ◽  
Good Practice ◽  
Belt Speed ◽  
Research Programmes ◽  
Potential Benefits ◽  
Water Treadmill ◽  
Selection Of

Water treadmill exercise has become popular in recent years for the training and rehabilitation of equine athletes. In 2019, an equine hydrotherapy working group was formed to establish what was commonly considered to be best practice in the use of the modality. This article describes the process by which general guidelines for the application of water treadmill exercise in training and rehabilitation programmes were produced by the working group. The guidelines describe the consensus reached to date on (1) the potential benefits of water treadmill exercise, (2) general good practice in water treadmill exercise, (3) introduction of horses to the exercise, (4) factors influencing selection of belt speed, water depth and duration of exercise, and (5) monitoring movement on the water treadmill. The long-term goal is to reach a consensus on the optimal use of the modality within a training or rehabilitation programme. Collaboration between clinicians, researchers and experienced users is needed to develop research programmes and further guidelines regarding the most appropriate application of the modality for specific veterinary conditions.

Attribute Based Selection of Thermoplastic Resin for Vacuum Infusion Process

2011 ◽  
Vol 1 (3) ◽  
pp. 31-52 ◽  
Author(s):  
R. T. Durai Prabhakaran ◽  
Aage Lystrup ◽  
Tom Løgstrup Andersen
Keyword(s):  
Material System ◽  
Mathematical Tool ◽  
Thermoplastic Resin ◽  
Thermoplastic Polymers ◽  
Vacuum Infusion ◽  
Thermosetting Polymers ◽  
Current Scenario ◽  
New Material ◽  
Selection Of ◽  
Vacuum Infusion Process

The composite industry looks toward a new material system (resins) based on thermoplastic polymers for the vacuum infusion process, similar to the infusion process using thermosetting polymers. A large number of thermoplastics are available in the market with a variety of properties suitable for different engineering applications, and few of those are available in a not yet polymerised form suitable for resin infusion. The proper selection of a new resin system among these thermoplastic polymers is a concern for manufactures in the current scenario and a special mathematical tool would be beneficial. In this paper, the authors introduce a new decision making tool for resin selection based on significant attributes. This article provides a broad overview of suitable thermoplastic material systems for vacuum infusion process available in today’s market. An illustrative example—resin selection for vacuum infused of a wind turbine blade—is shown to demonstrate the intricacies involved in the proposed methodology for resin selection.

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