Engineering Properties of Micro Concrete Roofing Tiles

Jayasinghe, C; Silva, M. H. P. J. De; Dissanayake, D.M.M.P.; Fernando, C. T. K. I.

doi:10.4038/engineer.v39i3.7191

Cited by 3 publications

(2 citation statements)

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“…In a study conducted by Ndigui and Uphie (1999) on natural river sands from Monatele, the water absorption test yielded an average value of 7.03%, indicating high-quality roofing tiles with regards to water absorption. Similarly, Jayasinghe et al (2006) examined the engineering properties of MCR tiles from Sri Lanka, with the water absorption test revealing an average water absorption of 8.63%. A low water absorption is an indication that MCR tiles are less absorptive and more durable, while MCR tiles with high water absorption are susceptible to damage (Abdullah et al, 2015).…”

Section: Water Absorption Testmentioning

confidence: 99%

Physical and geotechnical characterization of Bambui River sands, Northwest Region Cameroon to produce sustainable micro-concrete roofing tiles

Zoum,

Aye,

Ndimungiang

et al. 2024

EUR J SUSTAIN DEV RES

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The importance of sustainable construction practices is notably significant in developing nations like Cameroon, where there is a strong need for cost-effective, long-lasting, and environmentally conscious building materials. In the Northwest Region of Cameroon, the Bambui River sands have attracted interest as a potential source for producing sustainable micro-concrete roofing (MCR) tiles. This study aims to conduct a thorough assessment of the physical and geotechnical properties of the Bambui River sands to determine their suitability for producing sustainable MCR tiles. Seven representative sand samples were gathered from various locations along the Bambui Riverbed and analyzed at the local materials promotion authority. The physical characterization involved particle size analysis and sand equivalent testing on the river sands. Following this, the geotechnical characterization included testing MCR tiles produced from the river sands for flexural strength, permeability, water absorption, and impact resistance. The results of the physical characterization revealed the sands contain a mixture of coarse, medium, and fine grains. The sand equivalent tests indicated that the sands were clean, with values ranging from 83.87% to 97.14%. The manufacturing of MCR tiles from the Bambui River sands adhered to recommended standard procedures. The resultant MCR tiles exhibited promising geotechnical characteristics through various tests, such as flexural strength, permeability, water absorption, and impact resistance. Specifically, the flexural strength, average water absorption, and impact resistance (measured by ball drop height) were recorded at 10.68 MPa, 10.70%, and 900 mm, respectively. These outcomes suggest that the Bambui River sands are well-suited for producing sustainable MCR tiles.

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Section: Water Absorption Testmentioning

confidence: 99%

Physical and geotechnical characterization of Bambui River sands, Northwest Region Cameroon to produce sustainable micro-concrete roofing tiles

Zoum,

Aye,

Ndimungiang

et al. 2024

EUR J SUSTAIN DEV RES

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“…Recycled plastic roofing tiles will be used as a roofing material. [83]. Tiles of 8 mm will be used for the designed house.…”

Section: Modular Housing Constructionmentioning

confidence: 99%

Suitability of Modular Technology for House Construction in Sri Lanka: A Survey and a Case Study

Munmulla,

Hidallana-Gamage,

Navaratnam

et al. 2023

Buildings

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Prefabricated volumetric modular building construction is an emerging technology in many countries used to develop the construction industry through its value-added benefits. The adoption of these novel technologies in the Sri Lankan construction industry has been relatively slow compared with other developing countries, delaying the development of the construction industry and the attainment of the added benefits of these technologies. Therefore, this study aims to identify the suitability of modular construction for the Sri Lankan construction industry via a survey and case study. A questionnaire survey was developed and distributed to assess and identify the benefits of implementing the concepts and constraints in Sri Lanka. Then, the construction cost of a proposed single-story house delivered through conventional and modular practices was compared. The survey results showed that introducing a modular concept to the industry is suitable and would benefit the Sri Lankan construction industry. Further, survey participants believed that the economic benefits brought in by modular construction are significantly more important than environmental and social benefits when selecting modular construction. The case study on a single-story affordable modular house showed a 32% reduction in total construction costs and a 36% reduction in labour costs compared to conventional house construction. Further, costs for total modular construction and labour were 32% and 36% less than those of conventional construction costs and labour costs. Moreover, a 16% reduction in embodied energy was observed when compared with conventional construction. Therefore, the modular concept could be used to construct affordable houses and will be cost-effective with the correct choice of material.

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Semi-Tiered Housing for Laterite Earth Sloping Lands—a Sustainable Solution With Alternative Materials and Methods

Jayasinghe¹,

Jayasinghe²,

Kariyawasam³

et al. 2018

Journal of Green Building

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Increased demand for affordable housing and the limited availability of flat terrain for its construction are two major problems facing the provision of houses of acceptable quality in many countries around the world. There is limited research integrating the utilization of a stepped approach to sloping terrain with appropriate housing models to minimize slope instability potential. This paper introduces a new semi-tiered housing model where the footprint of the house is located on tiers prepared with short vertical cuts of 1.5–2m. Such vertical cuts are found to be stable with laterite soil which is a commonly available type of soil in the tropics. The excess soil generated from cut material was transformed into cement stabilized rammed earth, which is a cost effective material with low embodied energy. This is an ideal candidate for the construction of retaining walls and foundations, and such applications are demonstrated with adequate details. Further, many other types of sustainable building materials are highlighted with a case study of this housing model in a scheme of 13 housing units in Sri Lanka. The attention to detail required in construction and the applicability of alternative building materials and methods to improve the sustainability of such houses have been discussed in detail. These semi-tiered houses have the potential to address many of the current construction challenges.

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Engineering Properties of Micro Concrete Roofing Tiles

Cited by 3 publications

References 0 publications

Physical and geotechnical characterization of Bambui River sands, Northwest Region Cameroon to produce sustainable micro-concrete roofing tiles

Physical and geotechnical characterization of Bambui River sands, Northwest Region Cameroon to produce sustainable micro-concrete roofing tiles

Suitability of Modular Technology for House Construction in Sri Lanka: A Survey and a Case Study

Semi-Tiered Housing for Laterite Earth Sloping Lands—a Sustainable Solution With Alternative Materials and Methods

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