scholarly journals The Influence Of Construction Materials On Sustainable Constructions: A Study In Wolaita Zone, Southern Ethiopia

2021 ◽  
Vol 23 (12) ◽  
pp. 236-242
Author(s):  
AshebirAlyew Mamo ◽  
◽  
AshenafiReta Tessema ◽  
Keyword(s):  
Raw Materials ◽  
Research Result ◽  
Construction Materials ◽  
Likert Scale ◽  
Labor Cost ◽  
Economic Benefits ◽  
Sustainable Construction ◽  
Southern Ethiopia ◽  
Key Factors ◽  
Waste Rate

Studies on sustainable construction materials are on the increase with their Social, Environmental and Economic benefits. The research categorizes the key factors for sustainable construction materials. The method used for the study was that of a survey which depends on a questionnaire with five scale of measurements of Likert scale (1 for “Strongly Insignificant” (SI), 2 for “Insignificant” (IS), 3 for “Neutral” (N), 4 for “Significant” (S) and 5 for “Strongly Significant” (SS)) to create data for the analysis. For the purpose of this study, 18 indicators from the different dimensions summarized from the literature were presented to the respondents in the form of questionnaire, and replies were collected and analyzed using Likert scale on Microsoft Excel. The research result identified 18 underlined keyfactor for sustainable construction materials. Such as, Escalation of material prices, Material and equipment cost, Labor cost, Cost of variation orders, Waste rate of materials, Conformance to specification, Availability of personals with high experience and qualification, Quality of equipment and raw materials, Wastes around the site, Climate condition in the site, Human toxicity, Empowerment & participation, Adaptability, Social value, Life span, Initial cost, Job creation, and Tourism. Commonlythe study recommends that emphasis should be given for the identified key factors especially on the top five ranked key factors for Sustainable Construction Materials.

Sustainable Construction Materials

2019 ◽  
pp. 658-687 ◽  
Author(s):  
R. V. Ralegaonkar ◽  
M. V. Madurwar ◽  
V. V. Sakhare
Keyword(s):  
Smart City ◽  
Raw Materials ◽  
Construction Materials ◽  
Raw Material ◽  
Sustainable Construction ◽  
City Development ◽  
Chemical Test ◽  
Physico Chemical ◽  
Increasing Demand ◽  
By Products

Due to ever increasing demand for the conventional construction materials as well as an increase in agro-industrial by-products it is essential to reuse these materials. As a smart city solution this chapter briefs an overview for the application of alternate raw materials as a principal source for the development of sustainable construction materials. The potential application of the discussed raw materials is elaborated as cementitious material, the aggregates as well as alternative reinforcement material. To understand the process of application, sustainable masonry product development is discussed in detail. In order to evaluate the feasibility of the raw material, the necessary physico-chemical test evaluation methods are also briefed. The developed end product performance evaluation is also discussed by desired tests as recommended by standards. The chapter concludes with a positive note that reuse of agro-industrial by-products is a feasible solution for the smart city development.

scholarly journals Identification of Key Indicators for Sustainable Construction Materials

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Humphrey Danso
Keyword(s):  
Social Indicators ◽  
Construction Materials ◽  
Economic Benefits ◽  
Environmental Indicators ◽  
Three Dimensions ◽  
Sustainable Construction ◽  
Maintenance Cost ◽  
Local Resources ◽  
Key Indicators

Studies on sustainable construction materials are on the rise with their environmental, social, and economic benefits. This study identifies the key indicators for measuring sustainable construction materials. The design used for the study was that of a survey which relied on a questionnaire with five-point Likert scale to generate data for the analysis. For this purpose, 25 indicators from the three dimensions (environmental, social, and economic) identified from the literature were presented to the respondents in a structured questionnaire, and responses were collected and analysed using SPSS. The study identified three key environmental indicators for measuring sustainable construction materials, and these indicators are human toxicity, climate change, and solid waste. Furthermore, adaptability, thermal comfort, local resources, and housing for all were identified as the four key social indicators for sustainable construction materials. In addition, maintenance cost, operational cost, initial cost, long-term savings, and life span were found to be the five key economic indicators for measuring sustainable construction materials. The study therefore suggests that these twelve indicators should be considered in future studies that seek to measure sustainable construction materials.

Green gold of Africa – Can growing native bamboo in Ethiopia become a commercially viable business?

2014 ◽  
Vol 90 (05) ◽  
pp. 628-635 ◽  
Author(s):  
Felix Böck
Keyword(s):  
Building Materials ◽  
Raw Materials ◽  
Construction Materials ◽  
Wood Products ◽  
Raw Material ◽  
Sustainable Construction ◽  
Sustainable Business ◽  
Subtropical Zone ◽  
New Construction ◽  
Increasing Demand

With concerns about climate change and the search for sustainable construction materials, significant attention is now being paid to Africa's natural resources. Ethiopia, known as Africa's political capital, has a rapidly expanding economy with increasing demand for new construction materials. Through public private partnerships projects the country is developing a sustainable business model to promote bamboo as a raw material. The subtropical zone of Ethiopia is home to approximately 65% of Africa's bamboo resources, an area of over 1 million hectares. Bamboo is potentially an ideal source of local, sustainable purpose-engineered building materials for growing cities not only in Ethiopia but across Africa. Production of conventional construction materials such as steel and concrete is expensive, highly energy intensive and unsustainable, requiring large quantities of water and is strongly dependent on imported raw materials. Bamboo is a renewable building material widely cultivated in Ethiopia but not yet utilized in modern construction. Structural Bamboo Products (SBP), similar to engineered wood products, have excellent potential to partially replace the use of more energy-intensive materials. Projects such as African Bamboo are taking steps in managing, cultivating and using Ethiopian bamboo species to help mitigate rapid deforestation in East Africa by creating alternative “wood” sources and sustainable business opportunities.

scholarly journals Iron and Aluminium Production Wastes as Exclusive Components of Alkali Activated Binders—Towards a Sustainable Alternative

2021 ◽  
Vol 13 (17) ◽  
pp. 9938
Author(s):  
Nuno Cristelo ◽  
Fernando Castro ◽  
Tiago Miranda ◽  
Zahra Abdollahnejad ◽  
Ana Fernández-Jiménez
Keyword(s):  
Co2 Emissions ◽  
Building Materials ◽  
Negative Impact ◽  
Raw Materials ◽  
Construction Materials ◽  
Heat Of Hydration ◽  
Sustainable Construction ◽  
Alkaline Solutions ◽  
By Products ◽  
Alkali Activated

The sustainability of resources is becoming a worldwide concern, including construction and building materials, especially with the alarming increase rate in global population. Alternative solutions to ordinary Portland cement (OPC) as a concrete binder are being studied, namely the so-called alkali-activated cements (AAC). These are less harmful to the environment, as lower CO2 emissions are associated with their fabrication, and their mechanical properties can be similar to those of the OPC. The aim of developing alkali-activated materials (AAM) is the maximization of the incorporated recycled materials, which minimises the CO2 emissions and cost, while also achieving acceptable properties for construction applications. Therefore, various efforts are being made to produce sustainable construction materials based on different sources and raw materials. Recently, significant attention has been raised from the by-products of the steelmaking industry, mostly due to their widespread availability. In this paper, ladle slag (LS) resulting from steelmaking operations was studied as the main precursor to produce AAC, combined with phosphating bath sludge—or phosphate sludge (PS)—and aluminium anodising sludge (AS), two by-products of the surface treatment of metals, in replacement rates of 10 and 20 wt.%. The precursors were activated by two different alkaline solutions: a combination of commercial sodium hydroxide and sodium silicate (COM), and a disposed solution from the cleaning of aluminium extrusion steel dies (CLE). This study assesses the influence of these by-products from the steelmaking industry (PS, AS and CLE) on the performance of the alkali-activated LS, and specifically on its fresh and hardened state properties, including rheology, heat of hydration, compressive strength and microstructure and mineralogy (X-ray diffraction, scanning electron microscopy coupled with energy dispersive spectroscopy and Fourier transform infra-red. The results showed that the CLE had no negative impact on the strength of the AAM incorporating PS or/and AS, while increasing the strength of the LS alone by 2×. Additionally, regardless of the precursor combination, the use of a commercial activator (COM) led to more fluid pastes, compared with the CLE.

scholarly journals Construction Waste as a Resource in a Sustainable Built Environment

2020 ◽  
Vol 2020 (08) ◽  
pp. 28-36
Author(s):  
Martina Zbašnik-Senegačnik ◽  
Ljudmila Koprivec
Keyword(s):  
Life Cycle ◽  
Built Environment ◽  
Building Materials ◽  
Waste Treatment ◽  
Raw Materials ◽  
Construction Materials ◽  
Raw Material ◽  
Sustainable Construction ◽  
Construction Waste ◽  
Key Factor

The built environment requires ever-increasing amounts of raw material resources and at the same time bears the responsibility for the resulting waste. Waste is generated throughout the life cycle. In the initial phases it is referred to as industrial waste, while during construction, reconstruction, and demolition it is called construction waste. Construction waste is most voluminous but it also has a great potential in circular economy that aims at the closed loop cycle where already used construction materials and components are recovered as raw materials. Sustainable building principles include four basic strategies, waste avoidance, construction materials and components re-use, continued use, and recycling. The possibility of construction waste treatment and its possible recovery in the building process depends on the type of prevailing materials that are contained in building elements as well as on detachability, separability and inseparability of structural joints and components. The architect plays a responsible role in decreasing the volume of construction waste as the conception of a building represents the key factor in sustainable construction waste management. Planning a construction with a good dismantling potential at the end of the building’s life cycle includes a number of factors such as the choice of building materials with a low environmental impact, the design of detachable composite materials and structures as well as the design of mono material structures. This article focuses on waste resulting from the built environment and discusses architectural concepts with a potential of reducing the volume of construction waste and its potential recovery as a construction resource.

Sustainable Construction Materials

2016 ◽  
pp. 1-37
Author(s):  
R. V. Ralegaonkar ◽  
M. V. Madurwar ◽  
V. V. Sakhare
Keyword(s):  
Smart City ◽  
Raw Materials ◽  
Construction Materials ◽  
Raw Material ◽  
Sustainable Construction ◽  
City Development ◽  
Chemical Test ◽  
Physico Chemical ◽  
Increasing Demand ◽  
By Products

Due to ever increasing demand for the conventional construction materials as well as an increase in agro-industrial by-products it is essential to reuse these materials. As a smart city solution this chapter briefs an overview for the application of alternate raw materials as a principal source for the development of sustainable construction materials. The potential application of the discussed raw materials is elaborated as cementitious material, the aggregates as well as alternative reinforcement material. To understand the process of application, sustainable masonry product development is discussed in detail. In order to evaluate the feasibility of the raw material, the necessary physico-chemical test evaluation methods are also briefed. The developed end product performance evaluation is also discussed by desired tests as recommended by standards. The chapter concludes with a positive note that reuse of agro-industrial by-products is a feasible solution for the smart city development.

Selected Parameters of Mortars Containing Fine-Grain Modification of Glass and Clay Brick

2015 ◽  
Vol 1100 ◽  
pp. 81-86
Author(s):  
Martina Draganovska ◽  
Alena Sicakova
Keyword(s):  
Building Materials ◽  
Fine Particles ◽  
Raw Materials ◽  
Economic Benefits ◽  
Sustainable Construction ◽  
Fine Aggregate ◽  
Clay Brick ◽  
Clay Bricks ◽  
Fine Grain ◽  
Fresh State

Today’s world trend in construction and development of building materials is focused to research and development of material systems with properties resulting from dimensions of the components in the micro and nanoscale. Improved mechanical and physical properties, better durability as well as environmental and economic benefits are expected. Such of improved materials represent significant benefit for sustainable construction. In current world, construction and demolitions waste (C&DW) represents useful source of secondary raw materials for production of new building materials. This paper is engaged to assessment of impact the fine particles obtained by grinding of C&DW to technological and physico-mechanical parameters of mortar. Two types of different C&DW which vary in strength and microstructure were used for the experiment: glass and clay bricks. For the assessment of the properties of mortars with application of those ultrafine materials as filler, recipes with 20 and 60% replacement of natural fine aggregate were prepared and tested. Water demand for specified consistency was tested in the fresh state of mortars, while flexural, compressive and adhesive strength was tested after 2, 7, and 28 days of setting and hardening. Given results show positive or negligibly impaired impact of fine grain modification of glass and clay brick on tested parameters.

scholarly journals Fire-resistant cellulose boards from waste newspaper, boric acid salts and protein binders

2021 ◽  
Author(s):  
Paalo Moreno ◽  
Nicole Villamizar ◽  
Jefferson Perez ◽  
Angelica Bayona ◽  
Jesús Roman ◽  
...  
Keyword(s):  
Flexural Strength ◽  
Boric Acid ◽  
Building Materials ◽  
Mechanical Performance ◽  
Raw Materials ◽  
Construction Material ◽  
Construction Materials ◽  
Sustainable Construction ◽  
Load Bearing ◽  
Protein Binders

Abstract Housing construction consumes more materials than any other economic activity, with a total of 40.6 Gt/year. Boards are placed between construction materials to serve as non-load-bearing partitions. Studies have been performed to find alternatives to conventional materials using recycled fibers, agro-industrial waste, and protein binders as raw materials. Here, fire-resistant cellulose boards with low density and adequate flexural strength were produced for use as non-load-bearing partitions using waste newspapers, soy protein, boric acid, and borax. A central composite design (CCD) was employed to study the influence of the board component percentage on flame retardancy (UL 94 horizontal burning test), density (ASTM D1037-12) and flexural strength (ISO 178–2010). The cellulose boards were characterized by thermal analysis (ASTM E1131-14) and scanning electron microscopy. Fire-resistant cellulose boards were successfully made with low densities (120–170 kg/m3) and flexural strength (0.06–0.64 MPa). The mechanical performance and fire resistance of cellulose boards suggest their suitability for use as building materials. A useful and sustainable construction material with great potential is produced with the valorization of waste materials.

Bamboo Waste-based Bio-composite Substance: An application for Low-cost Construction Materials

2020 ◽  
Vol 4 (1) ◽  
pp. 41-48
Author(s):  
Teodoro Astorga Amatosa ◽  
Michael E. Loretero
Keyword(s):  
Composite Materials ◽  
Sea Water ◽  
Raw Materials ◽  
Low Cost ◽  
Construction Materials ◽  
Single Layer ◽  
High Strength ◽  
Green Technology ◽  
Experimental Medium ◽  
Natural Treatment

Bamboo is a lightweight and high-strength raw materials that encouraged researchers to investigate and explore, especially in the field of biocomposite and declared as one of the green-technology on the environment as fully accountable as eco-products. This research was to assess the technical feasibility of making single-layer experimental Medium-Density Particleboard panels from the bamboo waste of a three-year-old (Dendrocalamus asper). Waste materials were performed to produce composite materials using epoxy resin (C21H25C105) from a natural treatment by soaking with an average of pH 7.6 level of sea-water. Three different types of MDP produced, i.e., bamboo waste strip MDP (SMDP), bamboo waste chips MDP (CMDP) and bamboo waste mixed strip-chips MDP (MMDP) by following the same process. The experimental panels tested for their physical-mechanical properties according to the procedures defined by ASTM D1037-12. Conclusively, even the present study shows properties of MDP with higher and comparable to other composite materials; further research must be given better attention as potential substitute to be used as hardwood materials, especially in the production, design, and construction usage.

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