scholarly journals Development of flame retarded composite fibreboard for building applications using oil palm residue

2019 ◽  
Vol 69 (335) ◽  
pp. 197 ◽  
Author(s):  
T. O. Suoware ◽  
S. O. Edelugo ◽  
B. N. Ugwu ◽  
E. Amula ◽  
I. E. Digitemie

Residential housing is a critical aspect of human living and in developing countries this is a mirage due to high cost of building materials. In order to meet the needs for affordable housing with low cost materials as well as meet required fire safety standards, this research developed flame retarded fibreboards with oil palm residue reinforced in polyester resin, incorporating 0, 12 and 18% flame retardant loading using hand lay-up compression moulding. The fibreboards were tested for impact, thermal and flammability properties. Based on experiments, it was found that 12% aluminum tri-hydroxide fibreboard meets the impact and thermal limitations while the 18% hybrid formulation meets the required fire safety standard for building interior applications which will benefit rural dwellers in Nigeria and in similar climes around the world seeking to substitute conventional materials with the advantage of low cost, easy to process, biodegradable, environmentally benign and flame retarded composite material.

2017 ◽  
Vol 7 (2) ◽  
pp. 1-15
Author(s):  
Mithilesh Pandey ◽  
Yupal Sanatkumar Shukla

Subject area The subject areas are strategic management, international marketing business-to-business marketing. Study level/applicability The study is applicable to undergraduate and postgraduate courses. Case overview Dalmec Industries Manipulators India Pvt. Ltd. was incorporated in 2011 as a private limited company under the Companies Act, 1956. The company was formed to carry on importing machinery and distributing it to the clients. This case focuses on the dilemma faced by the company: whether it should establish a manufacturing unit in India or continue with the current operation procedures. Dalmec has faced various problems in India regarding local players, low-cost material handling equipment and the nascent stage of material handling industry. In Europe and the Middle East, the industries are more focused on safety standards and provide high quality material handling products to their workers, compared to the Indian industries. As local players in material handling sectors price their product very low, to compete with them with quality products is a major challenge for foreign companies. The company needed to build a strong and unique brand for non-European markets. In India, the material handling equipment market is crowded with local players. So, Dalmec needs to establish its reputation as a reliable partner and create a distinct identity. It has to create brand awareness among Indian companies and influence the decision makers of the corporates. The case discusses the impact of Make in India campaign on Dalmec and examines whether the Make in India initiative will prove helpful to Dalmec. Expected learning outcomes This study enables to familiarize students with the expansion strategy of a company; help students understand the international market entry strategies frequently used by multinationals to expand their business.; examine the feasibility of entering into emerging markets like India; and make students understand the relevance of the Make in India campaign for foreign corporate players. Supplementary materials Teaching Notes are available for educators only. Please contact your library to gain login details or email [email protected] to request teaching notes. Subject code CSS 11: Strategy.


2020 ◽  
Vol 1 (2) ◽  
pp. 30-39
Author(s):  
T. O. Suoware ◽  
S. O. Edelugo ◽  
C. O. Amgbari ◽  
F. L. Sorgbara

The high yielding of oil pam fibre reinforced composite (OPFC) to fire has necessitated research to improve and develop fire retardants (FR) to mitigate the spread of fire. Researchers relied on Flame Retardants (FR) classified as either halogenated or non-halogenated based FR to improve the performance of composites with emphasis on flammability properties (FP). The main object of this paper is to evaluate the effect of six non-halogenated FR species in OPFC to meet required fire safety standards for building purposes. The six FR species comprising aluminum tri-hydroxide (ATH), ammonium polyphosphate (APP), Gum Arabic powder (GAP) and carbon black (CB) were processed with OPFC at 0, 15 and 18% loading ratio using hand lay-up compression moulding technique. Specimens cut from the OPFC panels were tested for flammability and thermal properties using thermogravimetric analysis (TGA/DSC Metlar Toledo) and cone calorimeter apparatus respectively. The result obtained for thermal analysis shows that the panel was thermally stable at 391.6OC before degradation began compared to those without FR while peak flammability properties obtained for heat released rates, mass loss rates and smoke production rates showed the OPFC panels rapid fire response were significantly reduced respectively by 67.4%, 50.9% and 37.5% compared to those without FR. It can be concluded that the hybrid FR comprising APP-GAP showed a stable char structure during fire and thus prevented the escape of combustible volatiles which reduced the peak FP values of the OPFC panels. These flammability properties could be said to meet required fire safety standards for building applications.


2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Seyed Ali Zamani ◽  
Robiah Yunus ◽  
A. W. Samsuri ◽  
M. A. Mohd Salleh ◽  
Bahareh Asady

This study aims to produce optimized biochar from oil palm empty fruit bunches (OPEFB), as a green, low cost adsorbent for uptake of zinc from aqueous solution. The impact of pyrolysis conditions, namely, highest treatment temperature (HTT), heating rate (HR), and residence time (RT) on biochar yield and adsorption capacity towards zinc, was investigated. Mathematical modeling and optimization of independent variables were performed employing response surface methodology (RSM). HTT was found to be the most influential variable, followed by residence time and heating rate. Based on the central composite design (CCD), two quadratic models were developed to correlate three independent variables to responses. The optimum production condition for OPEFB biochar was found as follows: HTT of 615°C, HR of 8°C/min, and RT of 128 minutes. The optimum biochar showed 15.18 mg/g adsorption capacity for zinc and 25.49% of yield which was in agreement with the predicted values, satisfactory. Results of the characterization of optimum product illustrated well-developed BET surface area and porous structure in optimum product which favored its sorptive ability.


2021 ◽  
Vol 40 (4) ◽  
pp. 631-638
Author(s):  
T.O. Suoware ◽  
S.I. Umeh ◽  
S.O. Edelugo

Particleboard composites for building application has become very attractive because of their huge benefits which includes but is not limited to low cost, lightweight, durability and environmental benign. However, the vulnerability of these composite types when exposed to fire restricts their use in areas where stringent fire safety conditions may not apply. Experimental determination at bench scale of composite particleboard fire behaviour has shown that the addition of flame retardants (FR) can delay the start and spread of fire. Bench scale data obtained in the cone calorimeter (CC) may not represent accurately a real scale fore behaviour during a fire scenario as documented by various researchers. The convolution model is a significant tool for predicting in real scale, fire behaviour of composites which depends on experimental inputs from CC data. In this paper, particleboards made from wood sawdust reinforced polyester composite were processed with FR at 0, 15 and 18% loading ratio using compression moulding technique. Test specimens cut from the FR-particleboards was exposed in horizontal orientation in the CC at 50kW/m2 to obtain experimental data and these were used as inputs to the prediction model. The predictive tool was used to predict the heat released rate and smoke production rate for the FR-particleboard. The results obtained shows that the FR-particleboard contributes very limited fire in real scale and compares well based on Euro-classification with particleboards from literature.


2020 ◽  
Vol 8 (6) ◽  
pp. 3958-3962

Natural fibers are considered likely to be used in polymer composite materials as reinforcing agents because of their main advantages such as fine strength and rigidity, low cost, environmentally friendly, degradable and renewable material. A study was conducted to assess the impact of properties of bicomposite made from cardanol resin banana fibers. The banana fiber extracted from the banana stem was treated with alkali to enhance the interfacial linkage around fiber and cardanol resin. Biocomposite was manufactured using formaldehyde mixed with cardanol oil to form cardanol resin mixed with banana fiber using compression moulding Techniques with different process factors such as fiber weight (5%, 10%, 15%, 20%, and 25%) different fiber length (5, 10, 15, 20, and 25 in mm) and alkali treatment (varying in 1%, 3%, 5%, 7% and 9%. The developed banana fiber reinforced composite were then characterized by impact testing showing strong significance and association in DOE using 15.2% fiber weight response surface methodology with 15.3 mm fiber length and 4.7% alkaline treated. Thus we examined the effect of the above factors on impact and suggested the best combinations of factors for composite processing


2011 ◽  
Vol 35 (3) ◽  
pp. 222-229
Author(s):  
Petras Grecevičius ◽  
Algimantas M. Olšauskas ◽  
Ramunė Urbonienė

In the last few years, a negative impact on the environmental values of the Lithuanian urban landscape was made by an increasingly growing urbanization: more densely situated buildings, growing areas of solid concrete or other surface, less and less space for greenery. Soon, roofs shall be equipped not only with antennas, but also with solar collectors and small wind turbines. All this will undoubtedly have an impact on the architectural expression of buildings and landscapes and in the near future, the impact will become even more significant. To achieve high aesthetic value and ecological stability of Lithuanian urban landscapes, the necessary number of studies are required as well as regulatory planning and legislative measures to guarantee the high quality of landscapes not only in the coming years, but in the long term as well. Dust and gas polluted air creates major threat to human health in urban areas. Atmospheric air saturated with harmful substances penetrates into residential housing, hospitals, educational institutions and classrooms, and industrial premises. Indoor air is saturated with chemicals and substances, such as xylene, benzene, formaldehyde, ammonia, acetone and others, are released by building materials and furniture. Besides, there is also human and bio-depleted air. Free planting of trees and shrubs, flowers, grass, balcony attached trays, and plants in pots at the premises is no longer sufficient in urban areas.. Drastic architectural and urbanistic measures are required to help people in the city to restore the natural environment. We are children of nature and we have to move closer to it. To hide urban monotony, considerable efforts have to be made: plans – our friends – should take their places on building roofs and walls, balconies and terraces. This article analyses some of sustainable development issues particular to a Lithuanian city and associated with new technologies pertaining to urban landscape, urban spaces and architectural buildings, architecture, and environment. Some preliminary proposals for possible solutions to improve the basic architecture of buildings and townscapes to enrich the life of new high-quality brands are offered. Santrauka Pastaruoju laikotarpiu Lietuvos miestų kraštovaizdyje vis labiau daugėja urbanizacijos ženklų, darančių negatyvų poveikį aplinkos estetinėms vertybėms ir gyvenimo kokybei. Tankėja užstatymas, vis mažiau vietos lieka želdiniams, didėja kietų betoninių ar kt. paviršių plotas. Ant pastatų stogų įrengiami pavieniai saulės kolektoriai, antenos, mažosios vėjo jėgainės ir kt. Augalai išstumiami iš renovuojamų daugiabučių pastatų kiemų prioritetą suteikiant automobiliams. Nebelieka vietos vaikų žaidimų aikštelėms. Pastatų viduje oro kokybė ne geresnė kaip kieme ar gatvėje. Visa tai neabejotinai daro įtaką architektūrinei pastatų bei miestovaizdžių raiškai bei žmonių sveikatai. Ateityje, tankėjant užstatymui miesto centrinėse dalyse, ta įtaka dar labiau didės. Dulkėmis ir dujomis užterštas oras kelia didžiulę grėsmę žmonių sveikatai. Atmosferos oras, prisotintas kenksmingų medžiagų, skverbiasi į gyvenamuosius būstus, ligonių palatas, mokymo įstaigų klases ir auditorijas, gamybines patalpas. Jau nebepakanka laisvus plotus miestuose apsodinti medžiais ir krūmais, gėlėmis, apsėti žole. Būtinos kardinalios priemonės, padedančios žmogui mieste sugrąžinti natūralią gamtinę aplinką. Siekiant aukštos Lietuvos miestų kraštovaizdžių estetinės vertės, ekologinio stabilumo, būtini sisteminiai architektūriniai ir urbanistiniai tyrimai, taip pat pastatų ir kvartalų, pastatų aplinkos projektavimą reglamentuojančios, planavimo bei teisinės priemonės, kurios garantuotų aukštą kraštovaizdžio kokybę ne tik artimiausiais metais bet ir perspektyvoje. Šiame straipsnyje analizuojami kai kurie Lietuvos miestų darnaus vystymosi aspektai susieti su naujų kraštovaizdžio technologijų įtaka urbanizuotų miesto erdvių aplinkai, pateikiami preliminarūs siūlymai, kaip naujus aplinkos elementus kuo tinkamiau išnaudoti gerinant pastatų architektūrą, miesto vaizdą, gyvenimo kokybę.


Author(s):  
Mr. Pravin Shinde

In India the demand for housing is ever increasing and hence there is an increase in demand for building materials. Providing affordable housing is a challenge for developing country like India. India have an shortage of millions houses. Now days, more than 17 million retired shipping containers are stacked on the port worldwide. Container building still facing the various challenges. To avoid this challenges GFRG panels use as a Walls and Roofs of container house. So, Container house using GFRG panels provide an adequate solutions to the various problems. Building materials which are energy efficient strong and durable at an affordable cost are in great demand GFRG panels are of much relevance in India where there is tremendous need for cost effective mass scale and rapid housing. They are not only eco-friendly, but also resistant to termites, heat, rot, corrosion, water and fire. Concrete infill with vertical reinforcement rods enhances its vertical and lateral load capabilities. Comparative studies of GFRG and conventional buildings have been carried out in the present investigation. Rapid wall panel provides speedier construction and leads to environmental protection. Subsequently, it is a perfect option building material to replace bricks or concrete blocks. GFRG wall is a green product which can erect a building fast in prefabricated method. This paper highlights the positive aspects of GFRG panels with respect to Time, cost of construction Strength, affordability, energy efficiency over the conventional construction materials and its suitability in the Indian Housing Scenario. This research aims in providing adequate shelter for all individuals that is one among the recent challenges long faced by the developing countries. Economical plan and development of structures, utilizing green material is an option in contrast to exhaustion of totals and increment in cost of concrete. Glass fiber reinforced gypsum panel (GFRG) is a green material, which is a rapid wall construction method and a cost effective construction process. With the end goal to enhance the productivity, and decrease of waste, the lean the development has been presented as another administration rule for better execution. In India, the usage of lean administration in the development industry is a noteworthy errand. Because of the absence of consideration and uneducated towards the lean administration guideline the proprietor, contractual worker, engineers and so on are as yet creating a stage to actualize this standard in their task. This venture primarily centers on to recognize the potential outcomes of execution of lean administration in the development industry. This paper shows the probabilities of compelling usage of lean administration guideline in the development industry, which can definitely diminish the use of time, increment the nature of work, and benefit rate by wiping out the wastage of materials. It finally, points in giving lodging to all classes of people, in this way enhancing the economy of India. Going through this study, it will explore & analyze some projects and case studies from many points of views, Geometrically, Architecturally, structurally, financially, and of course environmentally. The deployment of containers as building modules has grown in popularity over the past years due to their inherent strength, modular construction, and relatively low cost. Finally, conclusions are going to be drawn on the important worth of lean construction against the traditional practice with consideration for the future benefits within collaborative technological models.


2020 ◽  
Vol 90 (3) ◽  
pp. 30502
Author(s):  
Alessandro Fantoni ◽  
João Costa ◽  
Paulo Lourenço ◽  
Manuela Vieira

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.


Author(s):  
J.R. Caradus ◽  
D.A. Clark

The New Zealand dairy industry recognises that to remain competitive it must continue to invest in research and development. Outcomes from research have ensured year-round provision of low-cost feed from pasture while improving productivity. Some of these advances, discussed in this paper, include the use of white clover in pasture, understanding the impacts of grass endophyte, improved dairy cow nutrition, the use of alternative forage species and nitrogen fertiliser to improve productivity, demonstration of the impact of days-in-milk on profitability, and the use of feed budgeting and appropriate pasture management. Keywords: dairy, profitability, research and development


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