Mechanical performance and durability of banana fibre and coconut coir reinforced cement stabilized soil blocks

Materialia ◽  
2021 ◽  
pp. 101309
Author(s):  
Kirupairaja Thanushan ◽  
Navaratnarajah Sathiparan
Keyword(s):  
Mechanical Performance ◽  
Banana Fibre ◽  
Stabilized Soil ◽  
Reinforced Cement ◽  
Coconut Coir

scholarly journals A Comparative Study on the Influence of Banana and Coconut Fibre on Stabilized Soil Blocks

2020 ◽  
Author(s):  
Kirupairaja Thanushan ◽  
Sathiparan Navaratnarajah
Keyword(s):  
Agricultural Waste ◽  
Environmental Issue ◽  
Environmental Concerns ◽  
Acid Attack ◽  
Waste Products ◽  
Freeze Thaw ◽  
Banana Fibre ◽  
Stabilized Soil ◽  
Coconut Coir ◽  
Coconut Fibre

Abstract Agricultural waste disposal is among the environmental concerns in many countries. Finding economical uses for this waste by incorporating it in a product is the approach often used to overcome the environmental issue. Banana fibre and coconut coir are major agricultural waste products in Sri Lanka and fewer amounts of these are converted into usable products. Manufacturing cement-stabilized soil blocks incorporating these waste materials can reduce the environmental impact. The present research studied the post-peak behavior and durability of banana fibre and coconut coir-strengthened cement-stabilized soil blocks. Banana fibre-reinforced and coconut coir-reinforced blocks were tested for compression, flexural bending, water absorption, sorptivity and resistance against chemicals, wet-dry weathering and freeze-thaw weathering. The banana fibre showed better post-peak behavior in compression and coconut coir showed better post-peak behavior in flexural. Both fibre reinforcements improved the block’s durability against the acid attack, alkaline attack, wet-dry weathering and freeze-thaw weathering. Moreover, the specimen reinforced with coconut fibres was found to exhibit better durability compared to the specimen reinforced with banana fibres.

Air-cured banana-fibre-reinforced cement composites

1994 ◽  
Vol 16 (1) ◽  
pp. 3-8 ◽  
Author(s):  
W.H. Zhu ◽  
B.C. Tobias ◽  
R.S.P. Coutts ◽  
G. Langfors
Keyword(s):  
Cement Composites ◽  
Banana Fibre ◽  
Reinforced Cement

Review of Mechanical Properties and Durability of PVA Fiber Reinforced Cement Based Composite Materials

2013 ◽  
Vol 804 ◽  
pp. 8-11 ◽  
Author(s):  
Xiao Bing Dai ◽  
Peng Zhang ◽  
Ji Xiang Gao
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
High Performance ◽  
Mechanical Performance ◽  
Construction Materials ◽  
Fiber Reinforced ◽  
Practical Engineering ◽  
Reinforced Cement ◽  
Pva Fiber ◽  
Structure Engineering

As a kind of high performance cement based construction materials, because of good mechanical performance and durability, PVA fiber reinforced cement based materials have been paid more and more attention in the field of civil structure engineering. To grasp the characteristics of PVA fiber reinforced cement based composite materials and promote a better application of PVA fiber reinforced cement based composite in practical engineering, a series of research works on the mechanical properties and durability of PVA fiber reinforced cement based composite were introduced systematically.

scholarly journals Effects of pH and Fineness of Phosphogypsum on Mechanical Performance of Cement–Phosphogypsum-Stabilized Soil and Classification for Road-Used Phosphogypsum

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1021
Author(s):  
Bo Peng ◽  
Zhongchang Yang ◽  
Zhengwen Yang ◽  
Jingwen Peng
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Unconfined Compressive Strength ◽  
Mechanical Performance ◽  
Ph Value ◽  
Cementitious Materials ◽  
Relational Analysis ◽  
Effects Of Ph ◽  
Stabilized Soil ◽  
Grey Relational

This article investigates the effects of phosphogypsum (PG) pH and particle fineness on the mechanical properties of cement–PG-stabilized soil. Using solutions of calcium hydroxide (Ca(OH)2) and sulfate (H2SO4) to adjust pH value of PG from 2 to 8. The key pore size used to characterize PG fineness was determined to be 200 μm based on the Grey relational analysis (GRA), and the fineness of PG was controlled from 12.31% to 56.32% by grinding different time. Cement–PG cementitious materials (CPCM) and cement–PG-stabilized soil with different mixture ratios were formed at an optimum moisture content; following this, the unconfined compressive strength and California bearing ratio values of the samples were tested. Results show that the increased pH or the decreased fineness leads to continuous increases in the unconfined compressive strength of CPCM and cement-PG stabilized soil as well as the CBR value of cement–PG-stabilized soil. However, once PG pH value exceeded 5 or fineness was less than 20%, the mechanical properties of cement–PG-stabilized soil remained stable. A classification standard for road usage PG was established based on the analyses regarding cement-PG stabilized soil’s mechanical properties, which has great significance of selecting or disposing road-used PG.

Hybrid Fibre-Reinforced Cement Composite

2012 ◽  
Vol 730-732 ◽  
pp. 343-348
Author(s):  
Elisabete R. Silva ◽  
Humberto E. Ferreira ◽  
Jorge F.J. Coelho ◽  
João C. Bordado
Keyword(s):  
Mechanical Performance ◽  
Fibre Length ◽  
Cement Composite ◽  
Crack Arrest ◽  
Cement Matrix ◽  
Interfacial Zone ◽  
Hybrid Fibre ◽  
Mechanical Behaviours ◽  
Reinforced Cement ◽  
Cement Matrices

This paper reports the results of a series of experiments carried out to investigate the effectiveness of newly hybrid polyethylene/polypropylene (PP/PE) fibres inclusion in the mechanical performance of cement matrices, with regard to fibres properties and content. The results indicate that, compared with plain cement matrix, the PP/PE fibre-reinforced cement matrices (FRC) revealed improvements on their mechanical performance. Increases of 37 ± 1% on compressive (40.2 MPa) and flexural strengths (8.1 MPa) were obtained for 24 mm fibre length composites containing a rather low fibre’s content (1 wt.%). These mechanical improvements were achieved after optimisation of the mortar workability by the addition of a superplasticizer. FRC mechanical behaviours also evidenced that despite the compressive strengths increasing with fibre length, a flexural strength effect is only noticeable for a 24 mm length fibre-reinforced composite and for fibres volume higher than 2.9 %. Morphological observations showed a strong interaction between fibres and cement matrix, evidenced a crack arrest role (bridge effect) on fibre/cement interfacial zone and revealed a typical multiple fracture cracking mechanism.

Nanomechanical Performance of Interfacial Transition Zone in Fiber Reinforced Cement Matrix

2018 ◽  
Vol 760 ◽  
pp. 251-256 ◽  
Author(s):  
Vojtěch Zacharda ◽  
Petr Štemberk ◽  
Jiří Němeček
Keyword(s):  
Elastic Modulus ◽  
Transition Zone ◽  
Cement Paste ◽  
Steel Fiber ◽  
Mechanical Performance ◽  
Creep Compliance ◽  
Interfacial Transition Zone ◽  
Cement Matrix ◽  
Average Value ◽  
Reinforced Cement

This paper shows a micromechanical study of interfacial transition zone (ITZ) around steel fiber in cement paste. It investigates microstructure and mechanical performance of the ITZ by a combination of nanoindentation and scanning electron microscopy (SEM). The investigated specimens were made from cement CEM I 42.5R paste with dispersed reinforcement in the form of steel fiber TriTreg 50 mm. The SEM demonstrated larger porosity and smaller portion of clinkers in the ITZ. Nanoindentation delivered values of elastic modulus, hardness and creep parameters around the fiber. An average value of elastic modulus in ITZ was at the level of 67% in comparison with cement bulk and the width of ITZ was about 40 µm. The value of hardness was found to be 60% of the average hardness of the bulk cement paste. The measured load-displacement curves were used for calculation of creep indentation parameter (CIT) and the creep compliance function. An average value of the creep compliance in the ITZ was found to be two times higher than in the cement bulk.

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