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The purpose of this paper is to study interactions between water‐based polymer isocyanate (WPI) adhesive and bamboo by means of differential scanning calorimetry (DSC).
Abstract
Purpose
The purpose of this paper is to study interactions between water‐based polymer isocyanate (WPI) adhesive and bamboo by means of differential scanning calorimetry (DSC).
Design/methodology/approach
The method of adapting new reference substance replacing aluminium was used due to the special characteristic of WPI adhesive when studying reactions between WPI adhesive and bamboo.
Findings
The methods of changing reference substance could counteract effect of water in the sample on DSC measurement. The results of DSC analysis showed that hardener of WPI adhesive can react with water and also with ‐OH in bamboo and matrix of WPI adhesives. That is to say that a competition exists between urethane formation (covalent bonding of isocyanate with hydroxyl groups in bamboo and matrix in WPI adhesive) and urea formation (isocyanate consumption due to the reaction with water) during the operation of glued bamboo products.
Research limitations/implications
The method of changing reference substance can be used for other DSC samples in which water cannot be conveniently removed, but this method requires that weight of reference substance to be exactly the same as the sample used in DSC measurement. So accuracy of weighing was very important in this DSC measurement.
Practical implications
The method developed in this paper provides a simple and practical solution to studying interactions between WPI adhesive and bamboo by means of DSC.
Originality/value
Changing reference substance was brought forward as a new method of counteracting effect of water in the sample on DSC measurement. The understanding gained through this study could help improve bonding properties of glued bamboo products.
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Sarah Yahia, Marwa Atif Ali and Khaled Mohamed Seddik
This paper aims to produce sustainable sport-hijab or veiling using cotton and bamboo as renewable and eco-material blending with polyester. Due to the unique characteristics of…
Abstract
Purpose
This paper aims to produce sustainable sport-hijab or veiling using cotton and bamboo as renewable and eco-material blending with polyester. Due to the unique characteristics of the knitting fabrics, the research focused on constructing the proposed samples using a circular knitting technique with a French terry structure, to achieve comfort, ease of care, good appearance and sustainability in different climatic conditions.
Design/methodology/approach
The researchers formed three different knitted samples using yarn count 30/1Ne for cotton and bamboo and 70 dens for polyester yarn, using the same blending ratio of 50:50% (cotton/polyester, bamboo/ polyester and cotton/ bamboo). They tested several mechanical and physical properties (weight, thickness, air permeability, water permeability, electrostatic charges, ultraviolet protection factor, stiffness, pilling resistance and bursting strength).
Findings
Using different tools, the researchers statistically analyzed the influence of variables on sample properties, including a Chart line, ANOVA test at p-value = 0.05 and the least significant differences values to identify the effect significantly as well as demonstrate the interaction among the samples at each tested property. Finally, radar chart areas to clarify the preferable sample performance.
Originality/value
The findings declared that blending materials used significantly affected most properties of the produced samples, except for the water permeability and an electrostatic charge. Furthermore, the findings pointed out that blending (cotton or bamboo/polyester) is more efficient and desirable than blending (cotton/ bamboo). Additionally, based on radar charts analysis, the cotton/polyester knitted outperforms other blended materials samples in producing sport-hijab or veiling fabric.
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The consideration of alternative sources of material for construction is imperative to reduce the environmental impacts as two-fifths of the carbon footprint of materials is…
Abstract
The consideration of alternative sources of material for construction is imperative to reduce the environmental impacts as two-fifths of the carbon footprint of materials is attributed to the construction industry. One alternative material with improved biodegradable attributes which can contribute to carbon offset is bamboo. The commercialisation of bamboo in modern infrastructures has significant potential to address few of the Sustainable Development Goals (SDGs) itemised by the United Nations, namely SDG 9 about industry, innovation and infrastructure. Other SDGs covering sustainable cities and communities, responsible consumption and production and climate action are also indirectly addressed when utilising sustainable construction materials. Being a natural material however, the full commercialisation of materials such as bamboo is constrained by a lack of durability. Besides fracture mechanisms arising from load-induced cracks and thermal modification, the durability of bamboo material is greatly impaired by biotic and abiotic factors, which equally affect its natural rate of degradation, hence fracture behaviour. In first instance, this chapter outlines the various factors leading to the durability limitations in bamboo material due to load-induced cracks and natural degradation based on recent findings in this field from the author's own work and from past literature. Secondly, part of this chapter is devoted to a new approach of processing the surge of information about the varied aspects of bamboo durability by considering the powerful technique of artificial intelligence (AI), specifically the artificial neural network (ANN) for prediction modelling. Further use of AI-enabled technologies could have an impactful outcome on the life cycle assessment of bamboo-based structures to address the growing challenges outlined by the United Nations.
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Aidy Ali, Wei Kuan Ng, Faiz Arifin, Kannan Rassiah, Faiz Othman, Shauqi Hazin and Megat Hamdan Megat Ahmad
The purpose of this paper is to investigate the fracture properties of hybrid woven bamboo (WB)/woven e-glass (EG) fiber composites with various layer arrangements. This paper…
Abstract
Purpose
The purpose of this paper is to investigate the fracture properties of hybrid woven bamboo (WB)/woven e-glass (EG) fiber composites with various layer arrangements. This paper utilized a specific type of bamboo species named Gigantochloa Scortechinii (Buluh Semantan).
Design/methodology/approach
In these experiments, unsaturated polyester, woven EG and WB fibers were prepared through the hand lay-up technique. The composite bamboo strips were prepared in 1.5 mm thickness. The strips are woven to make a single layer. The layer was then laminated into several thicknesses. The specimens were then characterized using compact tension fracture tests.
Findings
The fracture toughness of 12–14 MPa was obtained. These findings suggest that this hybrid bamboo composite provides superior fracture strength that is equivalent with steel alloy and is extremely a good alternative for reinforcing fibers to combat fracture failures of materials and structures.
Originality/value
In this paper, experimental determination of newly developed composite made of WB and woven EG is presented.
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Ezra Kassa Hailemariam, Leule Mebratie Hailemariam, Ermias Adane Amede and Denamo Addissie Nuramo
Bamboo is still a traditional material that requires additional development before it can be considered as a modern and reliable alternative to steel, wood, and concrete. When…
Abstract
Purpose
Bamboo is still a traditional material that requires additional development before it can be considered as a modern and reliable alternative to steel, wood, and concrete. When compared to the huge volumes of information available on timber and concrete, bamboo has a little quantity of information. When it comes to estimating bamboo structures, there are not many options. As a result, pinpointing the key qualities and events that aid or impede bamboo's integration into the construction sector is vital.
Design/methodology/approach
Factor analysis (FA) was used for summarizing and reducing data to significant ones in identifying barriers, benefits and potentials of using bamboo materials for construction. In this method, small number of factors was aimed at to explain most of the variances observed in a much larger number of variables. The goal was to identify not-directly-observable barriers and opportunities based on a larger set of observable or measurable indicators identified from literature. It attempted to identify underlying challenges and potentials that lay the patterns of bamboo material usage in the construction sector.
Findings
From the results of FA, six specific components with loadings greater than 0.5 were kept for both the barrier and the advantages of using bamboo Lack of awareness on bamboo material, Unorganized supply chain, Exclusion from standards, Outperformance of industrial products, Lack of innovation and institutional support and Bamboo's mechanistic limitation was considered to be the root causes of all barriers. On the other end, structural suitability of bamboo, viable timber alternative, meeting sustainability's demand, attractive economic model, cost effective material, positive social implications were labeled as benefits of bamboo. Finally, major recommendation regarding research, facility, institutionalizing and resource management were forwarded.
Originality/value
Ethiopia is a major bamboo producer in Africa. The bamboo sector, on the other hand, remains a part of the undeveloped and informal rural economy, preventing it from reaching its full potential. Despite technological advancements, bamboo is not commonly used in construction. As a result, using bamboo as a building material is frowned upon. In order to take effective action to accommodate bamboo as an alternative building material, significant challenges, benefits, and potential of the material must be stated with this purpose in mind.
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Shih-Hsuan Chiu, Ivan Ivan, Cheng-Lung Wu, Kun-Ting Chen, Sigit Tri Wicaksono and Hitoshi Takagi
Stereolithography is a well-established technique for producing complex part for rapid prototyping purpose by using UV or laser as a source for curing process. This technique has…
Abstract
Purpose
Stereolithography is a well-established technique for producing complex part for rapid prototyping purpose by using UV or laser as a source for curing process. This technique has been implemented in a lot of industrial sectors. However, the parts fabricated by this technique exhibit low mechanical and thermal properties hindering a fast-growing application. The purpose of this paper is to propose a new method of digital light rapid prototyping (DLRP) system and investigate the effect of the addition of bamboo fiber with surface modification on improvement of mechanical properties of urethane diacrylate/bamboo composite.
Design/methodology/approach
Test specimens were fabricated using aliphatic urethane diacrylate photopolymer as matrix material and bamboo fiber as reinforce material. Adhesion between matrix and reinforce materials is a big issue in compositing, especially when handling bamboo as hydrophilic material and urethane diacrylate as hydrophobic material. To overcome this problem, two surface modifications of bamboo fiber, alkali treatment and silane treatment, were implemented.
Findings
As a result, bamboo fiber can increase mechanical properties of urethane diacrylate photopolymer fabricated by rapid prototyping system.
Originality/value
In this paper, the authors investigate the effect of the addition of bamboo powder with surface modification on mechanical properties. Test specimens were fabricated using aliphatic urethane diacrylate photopolymer as matrix material and bamboo powder as reinforce material.
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Arun Jyoti Nath and Ashesh Kumar Das
The present study seeks to evaluate the role of village bamboo management in the rural landscape of North East India in global climate change mitigation.
Abstract
Purpose
The present study seeks to evaluate the role of village bamboo management in the rural landscape of North East India in global climate change mitigation.
Design/methodology/approach
A set of 100 home gardens and 40 bamboo groves were selected from Irongmara and Dargakona village, in Cachar district, Assam, North East India through random sampling. Sampling was done mostly for smallholders. Culm growth, carbon storage, carbon sequestration and carbon in litter floor mass and soil of bamboo growing areas in homegarden was explored from 2003‐2007.
Findings
Culm growth extension revealed the brief periodicity of culm growth in a single growth period. Of the total carbon storage soil contributed 84.6 per cent of the total (50.1 Mg ha−1) followed by carbon in above ground vegetation 15 per cent (9 Mg ha−1) and carbon in litter floor mass 0.4 per cent (0.2 Mg ha−1).
Practical implications
Bamboo plantation development and its management in home gardens has social, ecological and economical benefits for the rural life in North East India and its promotion can become an effective choice for climate change mitigation strategy.
Originality/value
Bamboo forms an important component in the traditional home garden system of North East India where the practice of bamboo cultivation and management provides an important sink for CO2. Village bamboos play an important role in local economics, societies and environments and, considering its potential to mitigate global climate change, the authors recommend the promotion of bamboo in agroforestry expanding practices and rehabilitation of degraded lands. Management of village bamboos in rural landscape is highlighted in context to environmental sustainability and as a sink measure under the Clean Development Mechanism (CDM) of Kyoto Protocol.
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Tong Wang, Jing Di and Hongliang Zuo
In view of the defects of glued wood beams, a new composite member – reconstituted bamboo board reinforced glued wood beams is proposed to improve the bearing capacity of glued…
Abstract
Purpose
In view of the defects of glued wood beams, a new composite member – reconstituted bamboo board reinforced glued wood beams is proposed to improve the bearing capacity of glued wood beams.
Design/methodology/approach
The bending test studied the ordinary glulam beams and the reinforced glulam beams with different layer numbers and different layer thicknesses by comparing with six kinds of glulam beams strengthened with bamboo scrimber and one kind of ordinary glulam beams and used the method of third-point stepwise loading on the glulam beams strengthened with bamboo scrimber.
Findings
The bamboo scrimber improved the bending behavior of the ordinary glulam beams. The 10 mm bamboo scrimber layer can meet the requirements of the maximum ultimate bending capacity and minimize the defects. So 10 mm bamboo scrimber layer was the optimal thickness. During the loading process, the strain change of the normal section of the reconstituted bamboo board reinforced glued wood beam basically conforms to the plane section assumption.
Originality/value
The bending rigidities of the glulam beams strengthened with bamboo scrimber increased up to 28.25%, 8.53% and 76.67%, and the ultimate bending capacity increased from 83.44% to 99.34% with the increase of the bamboo scrimber plate layers (the replacement rate). The ultimate bending capacities and the bending rigidities of the glulam beams strengthened with bamboo scrimber increased to 52.32%∼60.18% and 90.07%∼99.34% with the changing of the bamboo scrimber thicknesses from 7.1 mm to 25 mm.
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Nachiappan Sukumar, Mekonnen Bayeleyegn and Sampath Aruna
Recently, composites have concerned considerable importance as a potential operational material. Lots of work have been carried out to enhance the mechanical properties of…
Abstract
Purpose
Recently, composites have concerned considerable importance as a potential operational material. Lots of work have been carried out to enhance the mechanical properties of composites. The main aim of this paper is to develop bamboo mat as reinforcing material with bagasse fiber as filler using epoxy resin matrix composite.
Design/methodology/approach
In this research, the effect of fiber surface treatments on mechanical properties of epoxy resin composite with bagasse as filler has been developed and investigated. The extracted bamboo fibers were treated with NaOH to improve the surface roughness fiber. Using treated and untreated bamboo fiber handwoven mat has been produced to be used as reinforcement and bagasse fiber has been converted into powder to be filled as filler. Composite material is fabricated using bamboo fiber and bagasse fiber as filler with epoxy resin as a matrix using hand layup technique.
Findings
Then, tensile, flexural and compressive strength and water absorption tests were conducted on sodium hydroxide treated and untreated fiber composites. The test results comparing with and without alkali treated composites show that there was significant change in their strength and water absorption properties on alkali treated fiber.
Originality/value
This study is an original research paper.
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This chapter examines the bamboo-based livelihoods of the tribal artisans of Tripura and studies entrepreneurship, through the perspective of innovative small and medium…
Abstract
This chapter examines the bamboo-based livelihoods of the tribal artisans of Tripura and studies entrepreneurship, through the perspective of innovative small and medium enterprises, as a way to achieve sustainable development. Under a cluster-based approach of the Tripura Bamboo Mission, this chapter intends to understand how tribal entrepreneur’s belief in sustainability motivates them to develop and enhance livelihood opportunities. It is in addressing this basic question of an entrepreneur’s ‘drive’ in achieving sustainable livelihood that the development goals are met.
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