Investigation on elements and their fraction of housing construction cost

Nanayakkara, N.H.V.T.N.; Udawattha, Chameera; Halwatura, RU

doi:10.1109/mercon.2017.7980495

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…Mud concrete block is a building material invented by the University of Moratuwa, Department of Civil Engineering. The concept is to use available soil and mix them with 6% of cement and used alternative to the brick and cement blocks, mostly available in the market [1][2][3][4][5]. The concept is to aggregate 'Concrete' made using earth/soil.…”

Section: Mud Concrete Blockmentioning

confidence: 99%

Alternative Stabilizer for Mud Concrete

Udawattha¹,

Halwatura²

2018

Cement Based Materials

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Cement is one of the key stabilizers for earth constructions since Roman civilization. The invention of cement was one step in the human civilization. However, cement has many issues especially when it comes to the environmental conservation. The production of cement creates a lot of carbon dioxide and destroys the natural setting to some extent due to the high consumption of clay and lime. Therefore, this study was conducted to alter the cement in mud concrete block. The study started with an inventory of alternative stabilizers that can be found in nature as well as in the human production. And then, the chemical patterns of those stabilizers were carefully identified to alter the typical Portland cement. Several mix proportions were tested and developed to alter the cement and found that the following materials can be developed to alter cement. A natural stabilizer such as tree resins, latex rubber stabilizer, waste ash, rice husk ash and many other ashes can be developed to chemically stabilize the earth blocks. However, out of the invented stabilizers, fly ash and rice husk ash have the high potential to replace cement.

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Section: Mud Concrete Blockmentioning

confidence: 99%

Alternative Stabilizer for Mud Concrete

Udawattha¹,

Halwatura²

2018

Cement Based Materials

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“…The superstructure load transferring through columns and shear walls can be reduced considerably by replacing interior walls with lightweight materials [9]. Then, the sizes of the structural elements of the superstructure and also sub-structure could be reduced [10].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Investigation of the Suitability of Coir Fibre and Thermoplastic Waste as a Construction Material

et al. 2021

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Waste polyethylene creates serious environmental and social problems in Sri Lanka. The amount of waste polyethylene increases daily, further aggravating environmental and social issues. Finding out the most suitable solution for this is a vital requirement. This research focuses on investigating the possibilities to convert this waste polyethylene as a sustainable construction material by combining it with readily available coconut fibre. A preliminary investigation was carried out on thermoplastic/coconut fiber composites to evaluate their suitability in the construction industry. Composite sheets, 2.5 mm and 3.2 mm thick, were developed by varying coir fibre weight with a suitable polymer matrix using a hot press machine. In this step, mechanical properties of the composite material were measured through tensile and bending tests. The tests were carried out complying with ASTM D3039 and ASTM D790, respectively. The surface morphology of coir fiber and the fractured surface of failure material were investigated through Scanning Electron Microscopy (SEM). Maximum tensile strength was observed as 6.75 N/mm 2 when the coir wt. fraction is inbetween 20-30% by total weight. The maximum bending strength was 29.85 N/mm 2 when the coir fraction is almost 25% by total weight. The corresponding mechanical properties are compared with the available materials in the industry.

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