Potential of salvaged steel fibers for reinforcement of unfired earth blocks

Eko, Robert Medjo; Offa, Engelbert Dieudonné; Ngatcha, Thierry Yatchoupou; Minsili, Lezin Seba

doi:10.1016/j.conbuildmat.2011.11.050

Cited by 48 publications

(19 citation statements)

References 4 publications

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“…Other researchers have reported similar decreasing trends in strength of earthen blocks after exceeding certain fiber content thresholds. These include 2.0% salvaged steel fibers [71], 0.75% sisal fiber [21], and 1.5% barley straw [49]. The coefficient of variation reported in this study was between 6.80% and 25.58%.…”

Section: Influence Of Fiber Content On Strengthmentioning

confidence: 75%

Fiber Reinforced Compressed Earth Blocks: Evaluating Flexural Strength Characteristics Using Short Flexural Beams

2021

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There are ongoing research efforts directed at addressing strength limitations of compressed earth blocks (CEB) that inhibit their deployment for structural applications, particularly in areas where masonry systems are regularly subjected to lateral loads from high winds. In this paper, the authors focus specifically on the extent to which polypropylene (PP) fibers can be used to enhance the flexural performance of CEB. Cementitious matrices used for CEB production exhibit low tensile and flexural strength (brittle) properties. This work investigates plain (unreinforced) and fiber-reinforced specimens (short flexural beams) with fiber mass content of 0.2, 0.4, 0.6, 0.8, and 1.0% and ordinary Portland cement (OPC) content of 8%. The influence of the inclusion of fiber was based on tests conducted using the Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (ASTM C1609). Material properties that were quantified included first-peak strength, peak strength, equivalent flexural strength, residual strength, and flexural toughness. There was an observed improvement in the performance of the soil-fiber matrixes based on these results of these tests. It was also observed that when the fiber content exceeded 0.6% and above, specimens exhibited a deflection- hardening behavior; an indication of improvement in ductility. An equivalent flexural strength predictive model is proposed.

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Section: Influence Of Fiber Content On Strengthmentioning

confidence: 75%

Fiber Reinforced Compressed Earth Blocks: Evaluating Flexural Strength Characteristics Using Short Flexural Beams

2021

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“…Several other agricultural waste fibres such as jute, barley straw [5,6], and date palm [7] have been investigated for its performance in soil building blocks. Industrial wastes such as saw dust, steel fibre [8], coal by-products [9], blast-furnace slag [10], natural and phosphogypsum [11], rubber [12] and plastic [13] have also been studied to improve the performance of soil building blocks. Animal wastes such as cow dung, wool [14], flora fibres such as hibiscus cannabinus fibre [15] have also been used as reinforcement in soil blocks.…”

Section: Introductionmentioning

confidence: 99%

Physical, Mechanical and Durability Properties of Soil Building Blocks Reinforced with Synthetic Fibre

Selsiadevi¹,

Sujatha²

2018

IJET

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Earth construction is the most economic way to solve housing problems, particularly in case of low cost building, with the limitation of resources. The simplicity in production of earth blocks justifies by the availability of soil as raw material and by the less energy in production. Generally, fibre inclusion increases the strength and performance of the earth blocks. Synthetic fibre such as AR glass fibre, polypropylene fibre were used and investigated experimentally with different percentages of fibre 0.25 %, 0.50 %, 0.75 % and 1 % by weight of earth. A sequence of test was conducted with and without addition of fibre to soil building blocks. Physical properties, mechanical properties and durability properties specifically density test, water absorption by capillarity test, linear shrinkage, compressive test, indirect tensile stress, wearing test and erosion test were conducted and compared with different fibre ratio to determine the optimum fibre content in each mix order to produce blocks that will provide the maximum strength.

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“…Eko et al [127] explored the utilisation of salvaged steel fibre (1.7, 2, 2.7vol%) from used tires for reinforcement of unfired earth blocks. The fibre lengths used in the experiment were 20, 35, and 50mm with a radius of 1.59mm.…”

Section: Unfired Earth Blocks Construction Incorporating Nonagro Wastesmentioning

confidence: 99%

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

110

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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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Potential of salvaged steel fibers for reinforcement of unfired earth blocks

Cited by 48 publications

References 4 publications

Fiber Reinforced Compressed Earth Blocks: Evaluating Flexural Strength Characteristics Using Short Flexural Beams

Fiber Reinforced Compressed Earth Blocks: Evaluating Flexural Strength Characteristics Using Short Flexural Beams

Physical, Mechanical and Durability Properties of Soil Building Blocks Reinforced with Synthetic Fibre

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

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