PCM-mortar based construction materials for energy efficient buildings: A review on research trends

2018 ◽  
Vol 158 ◽  
pp. 95-122 ◽  
Author(s):  
V. Venkateswara Rao ◽  
R. Parameshwaran ◽  
V. Vinayaka Ram
Keyword(s):  
Energy Efficient ◽  
Construction Materials ◽  
Research Trends ◽  
Energy Efficient Buildings

scholarly journals Mathematical modelling of renewable construction materials for green energy-efficient buildings at permafrost regions of Russia

2021 ◽  
pp. 100101
Author(s):  
Nikolay Aleksandrovich Tsvetkov ◽  
Aleksandr Vital'yevich Tolstykh ◽  
Andrey Nikolaevich Khutornoi ◽  
Stanislav Boldyryev ◽  
Anna Vladimirovna Kolesnikova ◽  
...  
Keyword(s):  
Mathematical Modelling ◽  
Energy Efficient ◽  
Construction Materials ◽  
Green Energy ◽  
Energy Efficient Buildings ◽  
Regions Of Russia ◽  
Permafrost Regions

scholarly journals The Effect of Density on the Delicate Balance between Structural Requirements and Environmental Issues for AAC Blocks: An Experimental Investigation

2021 ◽  
Vol 13 (23) ◽  
pp. 13186
Author(s):  
Daniele Ferretti ◽  
Elena Michelini
Keyword(s):  
Thermal Conductivity ◽  
Energy Efficient ◽  
Construction Materials ◽  
Mechanical Index ◽  
Material Density ◽  
Safety Issues ◽  
Heating And Cooling ◽  
Energy Efficient Buildings ◽  
Optimum Material ◽  
Energy Efficient Building

Among other construction materials, Autoclaved Aerated Concrete (AAC) offers several advantages to face the pressing need to build more sustainable and energy-efficient buildings. From the building side, the low thermal conductivity of AAC allows the realization of energy-efficient building envelopes, with interesting savings in terms of heating and cooling processes. The equilibrium between structural performances (related to safety issues) and energy efficiency requirements is, however, very delicate since it is strictly related to the search for an “optimum” material density. Within this context, this work discusses the results of wide experimental research, showing the dependency of the most important mechanical properties (compressive strength, elastic modulus, flexural strength and fracture energy) from density, as well as the corresponding variation in thermal conductivity. In order to identify the better compromise solution, a sort of eco-mechanical index is also defined. The big challenge for future researches will be the improvement of this eco-mechanical index by working on pore structure and pore distribution within the material without significantly reducing the density and/or by improving the strength of the skeleton material.

scholarly journals Recent update on the environmental impact of geopolymers

2016 ◽  
Vol 1 ◽  
pp. 17 ◽  
Author(s):  
Guillaume Habert ◽  
Claudiane Ouellet-Plamondon
Keyword(s):  
Energy Source ◽  
Life Cycle ◽  
Environmental Impact ◽  
Energy Efficient ◽  
Major Part ◽  
Building Materials ◽  
Research Trends ◽  
Energy Efficient Buildings ◽  
New Energy ◽  
Alkali Activated

The contribution of building materials’ production to environmental impacts becomes significant in the new energy efficient buildings that are currently built. Among those materials, cement represents a major part of the embodied carbon footprint of buildings. Development of alternatives to traditional Portland cement have emerged over the last decades; however, their environmental assessment over their life cycle have resulted in conflicting results, which give a confusing picture of the strategic path to be followed. This paper focuses on the alkali-activated cement and concrete and points out the variability linked with the choice of energy source for the production of the activators and precursors. A review of existing studies is then performed in order to highlight the main benefits of these alternative cements in terms of reduction of greenhouse gas emissions. Finally, the results presented here highlight further research trends for new cements and concrete.

scholarly journals Recent update on the environmental impact of geopolymers

2016 ◽  
Vol 1 ◽  
pp. 17 ◽  
Author(s):  
Guillaume Habert ◽  
Claudiane Ouellet-Plamondon
Keyword(s):  
Energy Source ◽  
Life Cycle ◽  
Environmental Impact ◽  
Energy Efficient ◽  
Major Part ◽  
Building Materials ◽  
Research Trends ◽  
Energy Efficient Buildings ◽  
New Energy ◽  
Alkali Activated

The contribution of building materials’ production to environmental impacts becomes significant in the new energy efficient buildings that are currently built. Among those materials, cement represents a major part of the embodied carbon footprint of buildings. Development of alternatives to traditional Portland cement have emerged over the last decades; however, their environmental assessment over their life cycle have resulted in conflicting results, which give a confusing picture of the strategic path to be followed. This paper focuses on the alkali-activated cement and concrete and points out the variability linked with the choice of energy source for the production of the activators and precursors. A review of existing studies is then performed in order to highlight the main benefits of these alternative cements in terms of reduction of greenhouse gas emissions. Finally, the results presented here highlight further research trends for new cements and concrete.

THE ASSESSMENT OF NOISE GENERATED BY HEAT PUMPS INSTALLED OUTDOORS

Akustika ◽  
2020 ◽  
pp. 2-7
Author(s):  
Marián Flimel
Keyword(s):  
Present Article ◽  
Energy Efficient ◽  
Heat Pumps ◽  
Assessment Methods ◽  
Secondary Effect ◽  
Renewable Sources ◽  
Time Exposure ◽  
Energy Efficient Buildings ◽  
Important Position

Energy-efficient buildings utilise the potential of renewable sources, among which heat pumps hold an important position. As this technology has a secondary effect on the environment through its noise immission, locations of outdoor units in the exterior should be subjected to the assessment. The present article deals with the options of placing heat pumps in the exterior and the placement assessment methods. The noise burden identification through the assessment of the time exposure is presented in the example of an in situ measurement.

Energy-Efficient Buildings Through Design Automation

2001 ◽  
Author(s):  
Kirk D. McGraw ◽  
Linda K. Lawrie
Keyword(s):  
Energy Efficient ◽  
Design Automation ◽  
Energy Efficient Buildings

scholarly journals Mortars with Recycled Aggregates from Building-Related Processes: A ‘Four-Step’ Methodological Proposal for a Review

2021 ◽  
Vol 13 (5) ◽  
pp. 2756
Author(s):  
Federica Vitale ◽  
Maurizio Nicolella
Keyword(s):  
Building Materials ◽  
Thermal Analyses ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Research Trends ◽  
Mix Design ◽  
Recycled Aggregates ◽  
Design Parameters ◽  
Natural Aggregates ◽  
By Products

Because the production of aggregates for mortar and concrete is no longer sustainable, many attempts have been made to replace natural aggregates (NA) with recycled aggregates (RA) sourced from factories, recycling centers, and human activities such as construction and demolition works (C&D). This article reviews papers concerning mortars with fine RA from C&D debris, and from the by-products of the manufacturing and recycling processes of building materials. A four-step methodology based on searching, screening, clustering, and summarizing was proposed. The clustering variables were the type of aggregate, mix design parameters, tested properties, patents, and availability on the market. The number and the type of the clustering variables of each paper were analysed and compared. The results showed that the mortars were mainly characterized through their physical and mechanical properties, whereas few durability and thermal analyses were carried out. Moreover, few fine RA were sourced from the production waste of construction materials. Finally, there were no patents or products available on the market. The outcomes presented in this paper underlined the research trends that are useful to improve the knowledge on the suitability of fine RA from building-related processes in mortars.

Model of radon entry and accumulation in multi-flat energy-efficient buildings

2021 ◽  
Vol 9 (4) ◽  
pp. 105444
Author(s):  
Ilia Yarmoshenko ◽  
Georgy Malinovsky ◽  
Aleksey Vasilyev ◽  
Aleksandra Onishchenko
Keyword(s):  
Energy Efficient ◽  
Energy Efficient Buildings
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