scholarly journals LEED Study of Green Lightweight Aggregates in Construction

2021 ◽  
Vol 13 (3) ◽  
pp. 1395
Author(s):  
Fahad K. Alqahtani ◽  
Ibrahim S. Abotaleb ◽  
Sara Harb
Keyword(s):  
Sustainable Development ◽  
Construction Industry ◽  
Lightweight Concrete ◽  
Technical Information ◽  
Physical And Mechanical Properties ◽  
Building Design ◽  
Environmental Benefits ◽  
Lightweight Aggregates ◽  
Leed Certification ◽  
Sustainability Performance

Decreasing the demand for natural aggregates is doubly justified by the significant contribution of the construction industry to the unsustainable development path of the natural environment, and the projected global increase of the consumption of construction aggregates. Extensive research has been carried out on the physical and mechanical properties of concrete which incorporates plastic as aggregates; yet, no single study has been able to draw on structured research which demonstrates the improved sustainability performance of plastic-based aggregates to support sustainable development in the construction industry for a project seeking Leadership in Energy and Environmental Design (LEED) certification. The goal of this research is to explore the potential benefits that green processed lightweight aggregates (PLA) can provide to a project seeking LEED certification in accordance with the requirements of LEED v4 for Building Design and Construction. The objectives are to: (1) determine which LEED credit requirements can be met through using the studied material; (2) provide a comprehensive analysis of the applicable attainable LEED credits, given the existing technical information of the selected material, and (3) provide guidelines to maximize further credit attainment. To this end, the findings indicated that the use of PLA as a total replacement for coarse aggregates in lightweight concrete applications would contribute to earning directly up to 8 points (out of 110 total points) towards LEED certification. Such significant number allows for the potential increase of the project’s certification by one level. This is the first study of its kind to investigate the improved sustainability performance of recycled plastic aggregates from a LEED point of view. Moreover, the guidelines provided by the research will enable developers to maximize the financial and environmental benefits of their buildings through the reduced lifecycle cost and the enhanced LEED score. This research should encourage project teams to incorporate the knowledge of sustainable practices, and play an active role in sustainable development.

Utilization of Sugar Sediment Waste for a Low Cost Lightweight Concrete Development with Environmental Impact Reduction

2017 ◽  
Vol 730 ◽  
pp. 369-374
Author(s):  
Atthakorn Thongtha ◽  
Somchai Maneewan ◽  
Chantana Punlek
Keyword(s):  
Construction Industry ◽  
Industrial Waste ◽  
Lightweight Concrete ◽  
Low Cost ◽  
Environmental Benefits ◽  
Health Impacts ◽  
Impact Reduction ◽  
Wide Scale ◽  
Aerated Concrete ◽  
The Cost

Waste sugar sediment was included in the mix of lightweight concrete. The optimum mix that we identified was 10% by weight replacement of lime by sugar sediment. The resultant product exhibited the highest compressive strength of approximately 5.5 N/mm2, and demonstrated that a substantial proportion of the 872 million kgs of waste sugar sediment produced in Thailand per year could be diverted from landfills, providing substantial economic and environmental benefits. Our analysis indicates that about 13 million kgs of lime could be replaced by an equal amount of sugar sediment, 13 million kgs, per year, if the improved composition of lightweight autoclaved aerated concrete is adopted by the construction industry on a wide scale. As the cost of lime is about 2 Baht per kg, and sugar sediment is essentially a free input, an estimated 26,000,000 Baht per year savings is achievable. The economic, environmental and health impacts of reducing this industrial waste going into landfill areas by 13 million kgs per year must also be seen as substantial.

scholarly journals Discussion on Green Building Design

1970 ◽  
Vol 1 (1) ◽  
Author(s):  
Gao Hong
Keyword(s):  
Sustainable Development ◽  
Construction Industry ◽  
Green Building ◽  
Modern Society ◽  
Building Design ◽  
Economic Benefits ◽  
Living Environment ◽  
Green Building Design ◽  
The People

Abstract:  In  order  to continually meet the growing material and cultural needs of the people, leads to increasing scale in construction, to a certain extent, has accelerated the pace of urban construction in China,but also exposed many shortcomings. For example,the energy consumption of the construction industry is too large, it is pernicious to the sustainable development of modern society in China, and the substance of green building is use of energy-saving harmless resources to build a comfortable and healthy living environment,to ensure the quality of living environment and reduce the threat to health of human. With the strength of economic benefits,energy conservation and other advantages, making a major contributions to the economic environment. Therefore, this research will study from the relevant requirements of green building design,in-depth discussion of green building design techniques as a reference for the industry practitioners.

scholarly journals Research on Humanization Design of Green Building Based on Big Data

2018 ◽  
Vol 53 ◽  
pp. 04046
Author(s):  
Niu Fang
Keyword(s):  
Sustainable Development ◽  
Big Data ◽  
Energy Consumption ◽  
Construction Industry ◽  
Large Population ◽  
Green Building ◽  
Building Design ◽  
Current Situation ◽  
Green Design ◽  
Green Building Design

Now people life is becoming better and better, the demand for life also gradually increases. Based on the current situation of China's rising economic strength and large population base, the demand for construction has been expanded. Therefore, the construction industry has brought a lot of pollution and energy consumption. The solution to this problem is to insist on sustainable development, namely green building design. To carry on green design and better safeguard the purpose of the green design and humanized service, based on the powerful weapon Internet, we bring China's powerful weapon for China developed Internet, which is big data.

scholarly journals Evaluation and of University Building Design Effect Based on Multisensor Perception and Data Security

2022 ◽  
Vol 2022 ◽  
pp. 1-9
Author(s):  
Xusheng Xie ◽  
Junling Zhou ◽  
Xin Wen
Keyword(s):  
Sustainable Development ◽  
Economic Development ◽  
Construction Industry ◽  
Information And Communication Technologies ◽  
Smart Cities ◽  
Building Design ◽  
High Energy ◽  
Sensor Data ◽  
Design Effect ◽  
Perception System

The development of the smart cities with new and integrated information and communication technologies has changed the traditional industries’ processes. One of the domains is construction industry which plays an important supporting role for the economic development of a country, but at the same time, the construction industry is also an industry with high energy consumption and high pollution. Therefore, in order to alleviate the contradiction between economic development and resources and the environment, the construction industry must achieve sustainable development and take the road of green construction. In order to carry out the evaluation of the design effect of colleges and universities, this paper introduces the multisensor perception and fuzzy comprehensive evaluation methods. First, through the design and analysis of the sensor perception system used in the building environment, the collection, acquisition, analysis, and processing of complex information of heterogeneous multiterminals are obtained. Secondly, cluster analysis and genetic algorithms are used in the processing and analysis process of building multiterminal sensor data. The security aspect is also taking into account to design the methods. The system test verifies the performance of the university building design effect evaluation model, which can provide a reference for the sustainable development of the construction industry.

Evaluation of applicability of expanded shale to produce lightweight aggregate as a replacement for commercial LECA in constructions

2021 ◽  
pp. qjegh2020-176
Author(s):  
Mehdi Torabi-Kaveh ◽  
Mohammadreza Moshrefyfar ◽  
Jafar Zarezadeh ◽  
Seyed Mohammad Ali Moosavizadeh
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Lightweight Concrete ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Lightweight Aggregate ◽  
Mineralogical Composition ◽  
Lightweight Aggregates ◽  
Porous Microstructure ◽  
Expanded Shale

This study examined the potential of some shales obtained from different formations in Yazd province to produce Lightweight aggregates (LWAs) as natural materials and without the application of additives. Before heating the samples, the materials' usefulness for producing lightweight aggregates was examined by detecting the elemental and mineralogical composition of the shale samples. The presence of aluminosilicates and flux content confirmed and met the required conditions discussed by Riley's theory for the bloating process. Among the studied shale samples, Kharanagh shale samples of Kh1 and Kh2 were found as the most suitable materials to produce highly porous, light and mechanically durable aggregates after heating at the optimum temperature of 1200°C for a heating duration of 10min. The produced LWAs showed low density (for sample Kh1 equal to 0.7gr/cm3 which is close to the commercial LECA), low water absorption (quick water absorption indices of 5.35% and 5.48% for samples Kh1 and Kh2, respectively, which are less than one-third of LECA water absorption), porous microstructure (porous like LECA but with smaller pore size), and good mechanical properties (with aggregate impact and aggregate crushing values less than that of LECA and in the range of values suggested for construction aims). Finally, it was revealed that the produced LWAs have suitable microstructure, physical and mechanical properties, comparable with the commercial ones, which approve their potential for use as construction materials in lightweight concrete and road surface constructions.

scholarly journals Thermal Inertia Characterization of Multilayer Lightweight Walls: Numerical Analysis and Experimental Validation

2021 ◽  
Vol 11 (11) ◽  
pp. 5008
Author(s):  
Juan José del Coz-Díaz ◽  
Felipe Pedro Álvarez-Rabanal ◽  
Mar Alonso-Martínez ◽  
Juan Enrique Martínez-Martínez
Keyword(s):  
Lightweight Concrete ◽  
Thermal Flux ◽  
Experimental Studies ◽  
Thermal Inertia ◽  
Transient State ◽  
Experimental Tests ◽  
Building Design ◽  
Experimental Methodology ◽  
Improve Energy Efficiency ◽  
Concrete Blocks

The thermal inertia properties of construction elements have gained a great deal of importance in building design over the last few years. Many investigations have shown that this is the key factor to improve energy efficiency and obtain optimal comfort conditions in buildings. However, experimental tests are expensive and time consuming and the development of new products requires shorter analysis times. In this sense, the goal of this research is to analyze the thermal behavior of a wall made up of lightweight concrete blocks covered with layers of insulating materials in steady- and transient-state conditions. For this, numerical and experimental studies were done, taking outdoor temperature and relative humidity as a function of time into account. Furthermore, multi-criteria optimization based on the design of the experimental methodology is used to minimize errors in thermal material properties and to understand the main parameters that influence the numerical simulation of thermal inertia. Numerical Finite Element Models (FEM) will take conduction, convection and radiation phenomena in the recesses of lightweight concrete blocks into account, as well as the film conditions established in the UNE-EN ISO 6946 standard. Finally, the numerical ISO-13786 standard and the experimental results are compared in terms of wall thermal transmittance, thermal flux, and temperature evolution, as well as the dynamic thermal inertia parameters, showing a good agreement in some cases, allowing builders, architects, and engineers to develop new construction elements in a short time with the new proposed methodology.

Properties of Artificial Lightweight Aggregates (ALAs) Made of Dredged Soil Mixed with Waste Catalyst Slag

2012 ◽  
Vol 174-177 ◽  
pp. 1079-1085 ◽  
Author(s):  
Si Nae Jo ◽  
Yoo Tack Kim ◽  
Seung Gu Kang ◽  
Chang Sam Kim
Keyword(s):  
Specific Gravity ◽  
Water Absorption ◽  
Lightweight Concrete ◽  
Sintering Temperature ◽  
Thermal Power ◽  
Lightweight Aggregates ◽  
Dredged Soil ◽  
Porous Carriers ◽  
Black Core ◽  
Sintering Method

The artificial lightweight aggregates (ALAs) were manufactured using dredged soil produced at thermal power plant and waste catalyst slag by direct sintering method at 1050~1250°C for 10min. The ALAs of 100% dredged soil showed the black core phenomenon even at the low sintering temperature as 1050°C and become lightened by bloating pores in black core area with sintering temperature. On the other hand, the aggregates with 100% waste catalyst slag did not showed black coring and bloating phenomenon and had the low forming ability and many cracks inside. Adding the dredged soil to the waste catalyst slag decrease the specific gravity by promoting the black coring and bloating inside. The water absorption(%) of ALAs decreased with sintering temperature. The ALAs fabricated in this study showed the specific gravity of 0.8~2.0 and water absorption of 2~16% so it could be applied to various fields such as the lightweight concrete or the field of the porous carriers for purification of a contaminated soil or water.

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