Performance of natural polymers for stabilizing earth blocks

Udawattha, Chameera; Silva, Devinda Eranga De; Galkanda, Himahansi; Halwatura, RU

doi:10.1016/j.mtla.2018.07.019

Cited by 13 publications

(13 citation statements)

References 19 publications

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“…As a fiber, sugarcane fiber was selected. Sugarcane fiber is generated as an waste product in sugar manufacturing industry [23].…”

Section: Methodsmentioning

confidence: 99%

Analysis the Performance of Chemical and Physical Additives to Reduce Shrinkage of Drinking Water Treatment Sludge (DWTS)

Galkanda¹,

Halwatura²

2020

IJESD

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Water is one of the basic human needs and the country has the main responsibility to confirm their citizens' provision to safe water. Most of the countries in the world supply treated water to the country through water treatment plants. In drinking water treatment plants, solid sludge is generated at the end of the water treatment process as a waste product which is now becoming a global problem. In previous studies, shrinkage was identified as the major problem of drinking water treatment sludge (DWTS), accrued when use it as a raw material. This study was conducted to analyze the performance of both chemical and physical additives, to identify the possible additive to overcome the shrinkage of DWTS. In the study eight mixtures were prepared by adding Styrene Acrylic Binder as the chemical additive and sand and sugarcane fiber as physical additives separately and together and volumetric shrinkage of each mix was measured weekly. According to the results of this study it was concluded as, shrinkage of DWTS can be reduced by adding physical additives. Physical additives perform more effectively than chemical additives in the reduction of shrinkage of DWTS. Further studies are required to find the optimum mixing ratios of physical additives to optimize the performances.Index Terms-Chemical additives, drinking water treatment sludge (DWTS), physical additives, shrinkage.

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“…As a fiber, sugarcane fiber was selected. Sugarcane fiber is generated as an waste product in sugar manufacturing industry [23].…”

Section: Methodsmentioning

confidence: 99%

Analysis the Performance of Chemical and Physical Additives to Reduce Shrinkage of Drinking Water Treatment Sludge (DWTS)

Galkanda¹,

Halwatura²

2020

IJESD

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“…Udawattha et al [87] evaluated the performance of natural polymer addition (5, 10, 15 and 20wt%) to earth blocks as a stabiliser. Seven natural polymers such as pines resin (PR), dawul kurudu (DK), bael resin (BS), sugarcane bagasse (SB), agarwood resin (AWR), wood apple resin (WAR) and jack resin (JR) were collected from vernacular polymer technologies of Sri Lanka.…”

Section: Bottom Ashmentioning

confidence: 99%

“…Besides for higher lime ratio, unreacted lime caused the formation of portlandite which increased the porosity and caused the reduction of mechanical resistance. On the other hand, Udawattha et al [87] reported that thicker natural polymers (Pine resin, Dawul kurudu, sugarcane resin) created better bonds between soil particles than very lightweight natural polymers (Bael resin, Jack wood resin, Agarwood resin, wood apple resin). Also, in most of the studies, the compressive strength generally improved with the addition of cement or other binders.…”

Section: Effects Of Agro Wastes On the Compressive And Flexural Strength Of Unfired Earth Blocksmentioning

confidence: 99%

“…11 shows that granulated blast furnace slag (0.37W/mK) blended samples exhibited the best performance followed by calcium carbide residue (0.47W/mK), recycled aggregate (0.61W/mK), glass fibre reinforced polymer waste (0.68W/mK) and fly ash (0.78W/mK). [87], Corn husk ash [90], d-Sugarcane bagasse, Dawul kurudu, Pines gum, Jack resin [87], e-Sawdust, Tobacco residue, Grass [84], Wood apple resin [87], Seaweed [105], f-Straw (Wheat, Barley), Lavender [62], Corn cob [73], g-Rice husk [77], Agarwood resin [87], Grounded olive stone [88], Processed waste tea [108], h-Hemp, Flax [72], Corn plant [88], i-Cassava peel [91], j-Grewia optiva [29], Jute [71], k-Wood aggregate/fibre [82], Cassava powder [92], l-Pinus roxburghii [29], Fescue [88], Eucalyptus pulp [93], Wheat hay [95], m-Palm bark [78], n-Sisal [92], Oil palm fruit bunch [94], o-Kenaf [96], p-Coconut coir [65], Pig hair [110], q-Fonio [63], r-Banana [69], s-Oil palm fruit [65], Corn silk [89], Pineapple leaf [94], Henequen [98], Sheep wool [111], t-Date palm [99], [100]. Ceramic waste [137] Molybdenum tailing …”

Section: Effects Of Non-agro Wastes On the Thermal Conductivity Of Unfired Earth Blocksmentioning

confidence: 99%

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Application of agro and non-agro waste materials for unfired earth blocks construction: A review

Jannat

Hussien

Abdullah

et al. 2020

Construction and Building Materials

108

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The production process of conventional building materials consumes a high amount of energy which has a negative impact on the environment. The use of locally available materials and upgradation of traditional techniques can be a good option for sustainable development. Consequently, earth has attracted the attention of the researchers as a building construction material for its availability and lower environmental impact. On the other hand, in developing countries waste disposal from the agricultural and industrial sectors raises another serious concern. The scientists have introduced such waste additives into the earth matrix to improve its performance. Therefore, the present paper reviews the state-of-the-art of research on the effects of these various agro and non-agro wastes in the production of unfired earth blocks. This study is divided into three sections: The first section outlines the different types of waste materials and earth blocks considered in the selected papers. The second part deals in depth with the test results of the different properties (density, water absorption, compressive strength, flexural strength and thermal conductivity) of unfired earth blocks containing waste materials. The last section analyses and compares the results with the current earth-building construction standards. The literature survey presents that the waste materials have a clear potential to partly replace earth by complying with certain requirements. Moreover, the application of such wastes for the development of building construction materials provides a solution that decreases energy usage as well as contributes to effective waste management. Future research on establishing guidelines and standards for the development and production of these sustainable unfired earth building materials is recommended.

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“…It is considered renewable materials in which proteins such as collagen, gelatin, hyaluronic acid, silk and zein, and polysaccharides such as starch, sodium alginate, cellulose, chitosan; terpenes in the case of natural rubber and lipids. 4,5 The technological properties of natural polymers are numerous, allowing its application in many areas. Among these properties are biocompatibility, biodegradability, atoxicity, low cost, renewability, and availability.…”

Section: Introductionmentioning

confidence: 99%

Effect of crosslinker and nanostructure on adsorption and release of paraquat herbicide from different natural hydrogel nanocomposites

Fernandes

Yonezawa

Moura

et al. 2020

IJAMB

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Hidrogéis compostos em polímeros naturais que tenham sido usados em diferentes setores devido a suas propriedades de biocompatibilidade, biodegradabilidade, custo relativamente baixo e atoxicidade. O objetivo deste estudo foi preparar hidrogéis de alginato / amido reticulados com diferentes ícones (Mn 2+ , Zn 2+ ou Ca 2+ ), incluir zeólito ou nanoclay, e avaliar o efeito do reticador e nanoestrutura na adsorção e comportamento de seleção do herbicida paraquat. Os hidrogéis e seus nanocompósitos foram preparados por imersão de soluções de alginato / amido, alginato / amido / nanoclay ou alginato / amido / zeólita em recipientes que recebem uma solução reticuladora (MnCl 2 , ZnCl 2ou CaCl 2 ) a 25 ° C. Todos os hidrogênios apresentaram boa capacidade de adsorção, principalmente os hidrogênios nanoestruturados com nanoclay e zeólito. Como recursos polares, selecione alta interação com moléculas de paraquat. O comportamento da liberação também foi muito interessante, sendo que a quantidade de solução de formação de nanocompósitos de hidrogel pode controlar a liberação de paraquat, que tipos de materiais podem ser usados como veículos de transporte no sistema de liberação controlada.

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Performance of natural polymers for stabilizing earth blocks

Cited by 13 publications

References 19 publications

Analysis the Performance of Chemical and Physical Additives to Reduce Shrinkage of Drinking Water Treatment Sludge (DWTS)

Analysis the Performance of Chemical and Physical Additives to Reduce Shrinkage of Drinking Water Treatment Sludge (DWTS)

Application of agro and non-agro waste materials for unfired earth blocks construction: A review

Effect of crosslinker and nanostructure on adsorption and release of paraquat herbicide from different natural hydrogel nanocomposites

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