Compression Behaviour of Polypropylene Fibre Reinforced Cellular Light Weight Concrete Masonry Prism

Vijayalakshmi, R.; Srinivasan, Ramanagopal

doi:10.2478/ceer-2020-0011

Cited by 7 publications

(6 citation statements)

References 13 publications

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“…Use of microfibres can arrest the cracking at a micro level and enhance the pre-cracking behaviour of masonry prisms, while macro fibres induce ductile behaviour in the post-peak region by arresting the structural cracking. Post-peak residual strength and ductile behaviour of LWC masonry can, therefore, be attained by the addition of fibres [18,19]. Review of previous literature indicates that there is very limited information on the mechanical properties of natural fibre reinforced LWC blocks of a density range between 800-900 Kg/m3.…”

Section: Research Motivation and Objective Of The Studymentioning

confidence: 99%

Experimental Investigation Into Banana Fibre Reinforced Lightweight Concrete Masonry Prism Sandwiched with GFRP Sheet

Vijayalakshmi¹,

Srinivasan²

2020

Civil and Environmental Engineering Reports

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This paper presents the stress-strain behaviour of Natural Banana microfibre reinforced Lightweight Concrete (LWC) prisms under axial compression. The compressive strength of masonry is obtained by testing stack bonded prisms under compression normal to its bed joint. LWC blocks of cross-sectional dimensions 200 mm x 150 mm were used to construct the prism with an overall height of 630 mm. Three series of specimens were cast; (a) prism without Banana fibre (control), (b) prism with Banana microfibres, (c) prism with Banana microfibres sandwiched with Glass Fibre Reinforced Polymer (GFRP) sheets. Natural Banana fibres were used as structural fibre reinforcement at different volume fractions (VF). The results indicate that the presence of fibres helps to improve the strength, stiffness, and ductility of LWC stack bonded prisms under compression. The test results also indicate that banana fibre reinforcement provides an improved crack bridging mechanism at both micro and macro levels. The GFRP sandwiched prism specimens exhibited excellent ductility and load-carrying capacity resulting from improved plastic deformation tolerance under compression and bonding between the LWC block and GFRP sheet.

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Section: Research Motivation and Objective Of The Studymentioning

confidence: 99%

Experimental Investigation Into Banana Fibre Reinforced Lightweight Concrete Masonry Prism Sandwiched with GFRP Sheet

Vijayalakshmi¹,

Srinivasan²

2020

Civil and Environmental Engineering Reports

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“…A variety of synthetic fiber and plant fibers such as polyolefin, glass, carbon, polypropylene, banana fiber, sisal fiber, caryota fiber, roselle fiber, jute fiber, and coconut fiber are used as reinforcement in concrete nowadays to improve the mechanical strength and ductility characteristics of both normal and light weight aggregate concrete [6], [7], [8], [9], [10], [11]. Even though synthetic fibers have better thermal resistance, mechanical strength and durability, when compared to natural fibers, plant fibers are much preferred nowadays, due to their low cost and highly renewable nature [12], [13], [14], [15]. Using steel fibers of different aspect ratios and origins helps enhance the mechanical properties of concrete [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of biomass ash and coconut shell in scrap steel fiber reinforced concrete

Vijayalakshmi¹,

Balamurugan²,

Selvam³

et al. 2023

Građ materijali i konstrukcije

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To develop a sustainable concrete solution, the aggregates and cement in the concrete mixture were partially replaced with Cocos nucifera endocarp (coconut shell) aggregate and biomass ash (sugarcane bagasse ash) respectively. The fresh and hardened properties were studied for three types of mixes (i) the concrete mix with 10-30% replacement of cement with bagasse ash (BA), (ii) Bagasse ash concrete mix with scrap steel fiber and (ii) Bagasse ash concrete with scrap fiber and 10 - 50% coconut shell aggregate. The fresh property of concrete is positively influenced by the addition of bagasse ash. With the addition of scrap fibers and coconut shell the workability reduces by 47% when compared to the control mix. The slump values recorded for all the mixes were within the permissible limit. The density of concrete decreases with the inclusion of bagasse ash and coconut shell which helps reduce the dead weight of structural elements. The mechanical property of concrete increased by 5%, 6% and 8% in compression, split and flexure modes respectively, for 10% bagasse ash steel fiber reinforced concrete. Replacement of gravel with coconut shell affects the strength properties, but all the values were within the permissible limit for structural concrete application. The SEM image analysis showed that the porosity increased with coconut shell content. From the fresh and hardened concrete test results, it was observed that the coconut shell, bagasse ash and scrap fiber can be effectively used as substitutes for concrete ingredients to develop a sustainable fiber reinforced concrete solution.

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“…As a result, plant fibres are favoured, as they are low-cost, readily available, and entirely regenerative, resulting in a long-term sustainable concrete solution [7]. Many studies have recently been conducted to investigate the performance of natural and synthetic fibres in lightweight concrete [8,9]. This section highlights a few of the research findings.…”

Section: Introductionmentioning

confidence: 99%

Study on the performance of GFRP strengthened, fiber reinforced lightweight foam concrete

Vijayalakshmi¹

2022

Građ materijali i konstrukcije

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Regular clay bricks and concrete blocks are replaced with light-weight fibre-reinforced foam concrete modules. For light weight foam concrete, various natural and synthetic fibes are employed as micro- and macro-fibre reinforcement. Three distinct fibres were used as fibre reinforcement in this study, and their strength qualities were investigated. As microfibre reinforcement, synthetic-polypropylene fibre, natural-Jute fibre, and banana micro fibres were used at volume fractions ranging from 0.22 to 0.55 percent in the foam concrete mix. The compression behaviour of stack bonded masonry prisms was investigated in the first phase of the experiment. The second phase of research focused on the microfibre-reinforced prism, which was reinforced with multiple layers of GFRP sheets. Both jute and banana fibres added as microfiber reinforcement to the matrix, impart ductility to the brittle masonry unit and reduce the sudden failure mode of the Fibre-Reinforced Lightweight Foam Concrete (FRLWC) prism. The insertion of GFRP sheets between the masonry layers provides additional stiffness and ductility to the FRLWC masonry prism, which greatly improves the post-cracking behaviour. When compared to a standard LWC prism, failure patterns show that both synthetic and natural fibre-reinforcement provide improved fracture bridging mechanisms, which is mostly owing to the arresting of cracks by micro polypropylene, jute, and banana fibres. The GFRP layers provided between the masonry units prevented the formation of major crack planes.

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Compression Behaviour of Polypropylene Fibre Reinforced Cellular Light Weight Concrete Masonry Prism

Cited by 7 publications

References 13 publications

Experimental Investigation Into Banana Fibre Reinforced Lightweight Concrete Masonry Prism Sandwiched with GFRP Sheet

Experimental Investigation Into Banana Fibre Reinforced Lightweight Concrete Masonry Prism Sandwiched with GFRP Sheet

Influence of biomass ash and coconut shell in scrap steel fiber reinforced concrete

Study on the performance of GFRP strengthened, fiber reinforced lightweight foam concrete

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