Effect of Coconut Coir Uniformity on Strength of Unfired Soil Lime Bricks

2014 ◽  
Vol 887-888 ◽  
pp. 819-823
Author(s):  
Heru Purnomo ◽  
R.G. Raka Basmara Putra ◽  
R. Mochammad Syaifulloh ◽  
Iwan Sulistyawan ◽  
Essy Arijoeni Basoenondo ◽  
...  
Keyword(s):  
Fiber Length ◽  
Natural Fibers ◽  
Fiber Reinforcement ◽  
Experimental Investigations ◽  
Treated Fiber ◽  
Time Relation ◽  
Coconut Coir ◽  
Coconut Fibers

The paper discusses strength-time relation of unfired bricks reinforced with and without natural fibers. Untreated and treated coconut fibers with three different lengths (1 cm, 2.5 cm and 4 cm) were prepared for soil lime bricks reinforcements. The effects of 4% uniform 2.5 cm fiber reinforcement was compared to the effects of 4% non-uniform fiber reinforcement, which constitutes a fiber mix between 1/3 part each of 1 cm, 2.5 cm and 4 cm fiber length. Absorption of brick was also evaluated. Experimental investigations reveal that for all type of bricks, up to 90 days compressive strengths decrease a little but bending strengths rapidly decrease with time. The results show that unfired bricks added with uniform treated fiber resulted in better strength performances compared to those added with uniform untreated, non-uniform untreated and non-uniform treated fibers, and also to those without fibers.

Effect of Age on Strength of Unfired Soil Lime Bricks Containing Non Uniform Coconut Fibers

2013 ◽  
Vol 423-426 ◽  
pp. 1096-1100 ◽  
Author(s):  
Heru Purnomo ◽  
R.G. Raka Basmara Putra ◽  
R. Mochammad Syaifulloh ◽  
Iwan Sulistyawan
Keyword(s):  
Fiber Length ◽  
Natural Fibers ◽  
West Java ◽  
Treated Fiber ◽  
Time Relation ◽  
Effect Of Age ◽  
Fiber Addition ◽  
Coconut Fibers

In some provinces in Indonesia, like West Java, fired clay and unfired soil lime bricks co-exist as non standard bricks. Low rise buildings and rural houses in Indonesia are often constructed with non-standard bricks. The paper discusses strength-time relation of unfired bricks reinforced with and without natural fibers. Untreated and treated coconut fibers with three different lengths (1 cm, 2.5 cm and 4 cm) were prepared for bricks reinforcements. The effects of 4% non-uniform fiber addition, which constitutes 1/3 part each of 1 cm, 2.5 cm and 4 cm average fiber length, was investigated. Absorption of the bricks was evaluated. For all type of bricks, up to 90 days compressive strengths are almost stable but bending strengths rapidly decrease with time. The results show that unfired bricks added with treated fiber resulted in better performances compared to those added with untreated fibers and without fibers.

scholarly journals A REVIEW ON MECHANICAL PROPERTIES OF NATURAL FIBRE REINFORCED CONCRETE FOR RIGID PAVEMENTS

2021 ◽  
pp. 266-270
Author(s):  
M.Venkata Naga Prasad ◽  
Dr.J.Sridhar
Keyword(s):  
Low Cost ◽  
Natural Fibers ◽  
Natural Fibre ◽  
Cement Matrix ◽  
Rigid Pavements ◽  
Steel Bars ◽  
Coconut Coir ◽  
The Impact ◽  
Coconut Fibers

This study focuses on fiber reinforcement, specifically the use of jute and coir as a fiber reinforcing material in concrete. Natural fibers have been used to provide substantial toughness and strength in a very fragile cement matrix composite. It is necessary to make effective changes in this regard. Uses a very alkaline cement matrix to achieve durability. It is preferable to have a chemical composition that is clear. Reinforce the cement and change the surface of the fibers composite. The usage of jute fiber in this article is discussed. Concrete and the impact it has on the characteristics of the concrete it produces, for example this is an attempt to review the work that has just been completed. In the discipline, as well as to establish a foundation for future study in that case. It is critical to create low-cost building and reinforcing techniques that are suited for developing countries. If agricultural by-products like coconut coir can be used to replace steel bars as reinforcement, building costs can be reduced. Down significantly the purpose of this study is to evaluate the characteristics of coconut fibers. Species produced in India and their uses in many fields of engineering, notably civil engineering enhancing the long-term durability of concrete and mortar using engineering as a building material with the addition of coconut fibers the overall objective is to look into the possibility of utilizing domestic resources. Wastes for construction on a tiny scale a review of several researchers’ experiences utilizing is presented in this publication. The performance of coconut coir as a reinforcing component is explored in depth.

scholarly journals Effect of Coconut Fiber Length and Content on Properties of High Strength Concrete

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1075 ◽  
Author(s):  
Waqas Ahmad ◽  
Syed Hassan Farooq ◽  
Muhammad Usman ◽  
Mehran Khan ◽  
Ayaz Ahmad ◽  
...  
Keyword(s):  
High Strength Concrete ◽  
Fiber Length ◽  
Natural Fibers ◽  
Construction Materials ◽  
High Strength ◽  
Coconut Fiber ◽  
Strength Concrete ◽  
Super Plasticizer ◽  
Scanning Electron ◽  
Coconut Fibers

Recently, the addition of natural fibers to high strength concrete (HSC) has been of great interest in the field of construction materials. Compared to artificial fibers, natural fibers are cheap and locally available. Among all natural fibers, coconut fibers have the greatest known toughness. In this work, the mechanical properties of coconut fiber reinforced high strength concrete (CFR-HSC) are explored. Silica fume (10% by mass) and super plasticizer (1% by mass) are also added to the CFR-HSC. The influence of 25 mm-, 50 mm-, and 75 mm-long coconut fibers and 0.5%, 1%, 1.5%, and 2% contents by mass is investigated. The microstructure of CFR-HSC is studied using scanning electron microscopy (SEM). The experimental results revealed that CFR-HSC has improved compressive, splitting-tensile, and flexural strengths, and energy absorption and toughness indices compared to HSC. The overall best results are obtained for the CFR-HSC having 50 mm long coconut fibers with 1.5% content by cement mass.

Effect of Coconut Fibers Addition to early Age Unfired Soil Lime Bricks Strength

2013 ◽  
Vol 594-595 ◽  
pp. 471-476 ◽  
Author(s):  
Heru Purnomo ◽  
Dedi Priadi ◽  
Gilles Ausias ◽  
Thibaut Lecompte ◽  
H. Riana Lumingkewas ◽  
...  
Keyword(s):  
Fiber Length ◽  
Natural Fibers ◽  
Fiber Content ◽  
Early Age ◽  
West Java ◽  
Performance Quality ◽  
Potential Loss ◽  
Low Performance ◽  
Fiber Addition ◽  
Coconut Fibers

Low rise buildings and rural houses in Indonesia are often constructed with non-standard bricks. In some provinces, like West Java, fired clay and unfired soil lime bricks co-exist as non standard bricks. These bricks are traditionally produced in home run plants with little adherance to appropriate mix designs. These unfired soil lime bricks enter the market within 2 weeks of production, which inflicts potential loss to the buyers due to their low performance quality. The paper discusses strength improvements of these early age unfired bricks by adding natural fibers. Untreated coconut fibers with three different lengths (1 cm, 2.5 cm and 4 cm) were prepared for bricks reinforcements. The effects of 2%, 4% and 6% fiber addition to the strength of bricks were investigated. The bricks reinforced with 4% fiber content resulted in better strengths compared to those reinforced with other percentage of fibers. The effect of fiber length uniformity to the bricks strength was also evaluated. A 4% non-uniform fiber addition, which constitutes 1/3 part each of 1 cm, 2.5 cm and 4 cm average fiber length, was investigated. The results show that unfired bricks added with uniform fiber resulted in better performances compared to those added with non-uniform fibers. Higher compressive and bending strengths, compared to those strengths of unfired plain soil lime bricks and traditional soil lime bricks, could be achieved through fiber addition.

A Computer Simulation Approach for Engineering Air-Jet Spun Yarns

1997 ◽  
Vol 67 (3) ◽  
pp. 223-230 ◽  
Author(s):  
Rangaswamy Rajamanickam ◽  
Steven M. Hansen ◽  
Sundaresan Jayaraman
Keyword(s):  
Computer Simulation ◽  
Computer Simulations ◽  
Fiber Length ◽  
Experimental Investigations ◽  
Simulation Approach ◽  
Air Jet ◽  
Fiber Fineness ◽  
Spun Yarns ◽  
Yarn Count ◽  
Wrap Angle

A computer simulation approach for engineering air-jet spun yarns is proposed, and the advantages of computer simulations over experimental investigations and stand-alone mathematical models are discussed. Interactions of the following factors in air-jet spun yarns are analyzed using computer simulations: yarn count and fiber fineness, fiber tenacity and fiber friction, fiber length and fiber friction, and number of wrapper fibers and wrap angle. Based on the results of these simulations, yarn engineering approaches to optimize strength are suggested.

Experimental study on effect of fiber length and fiber content on tensile and flexural properties of bamboo fiber/epoxy composite

2019 ◽  
Vol 15 (5) ◽  
pp. 947-957 ◽  
Author(s):  
Giridharan R. ◽  
Raatan V.S. ◽  
Jenarthanan M.P.
Keyword(s):  
Mechanical Properties ◽  
Fiber Length ◽  
Epoxy Composite ◽  
Natural Fibers ◽  
Weight Ratio ◽  
Fiber Content ◽  
Bamboo Fiber ◽  
Flexural Properties ◽  
Fiber Reinforced ◽  
Content Type

Purpose The purpose of this paper is to study the effects of fiber length and content on properties of E-glass and bamboo fiber reinforced epoxy resin matrices. Experiments are carried out as per ASTM standards to find the mechanical properties. Further, fractured surface of the specimen is subjected to morphological study. Design/methodology/approach Composite samples were prepared according to ASTM standards and were subjected to tensile and flexural loads. The fractured surfaces of the specimens were examined directly under scanning electron microscope. Findings From the experiment, it was found that the main factors that influence the properties of composite are fiber length and content. The optimum fiber length and weight ratio are 15 mm and 16 percent, respectively, for bamboo fiber/epoxy composite. Hence, the prediction of optimum fiber length and content becomes important, so that composite can be prepared with best mechanical properties. The investigation revealed the suitability of bamboo fiber as an effective reinforcement in epoxy matrix. Practical implications As bamboo fibers are biodegradable, recyclable, light weight and so on, their applications are numerous. They are widely used in automotive components, aerospace parts, sporting goods and building industry. With this scenario, the obtained result of bamboo fiber reinforced composites is not ignorable and could be of potential use, since it leads to harnessing of available natural fibers and their composites rather than synthetic fibers. Originality/value This work enlists the effect of fiber length and fiber content on tensile and flexural properties of bamboo fiber/epoxy composite, which has not been attempted so far.

Eco-Friendly Reinforced Composites Made from Tamarindus Indica with Epoxy and Bisphenol Resin

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
G. Manikandan ◽  
V. Jaiganesh ◽  
R. Ravi Raja Malarvannan ◽  
M. Vinothkumar
Keyword(s):  
Natural Fiber ◽  
Natural Fibers ◽  
Future Generation ◽  
Extraction Process ◽  
Fiber Reinforced Composites ◽  
Experimental Investigations ◽  
Reinforced Composites ◽  
Tamarindus Indica ◽  
Fiber Reinforced ◽  
Load Carrying

For future generation, to keep the world green, the cognizance on natural fiber increases. The natural fiber-reinforced composites have an advantage of being lightweight, renewable, biodegradable, and cheap, eco-friendly. So there is a need to investigate the potential of natural fibers and their composites, which can be used in highly demanding situations. An attempt has been made in present work to explore the possible use of a variety of wild grown fibers in nature in the development of new composites for load carrying structures. This article is detailed about the extraction process of natural fibers and characterization of natural fiber-reinforced composites. The reinforced composites made by the use of Tamarindus Indica (Tamarind) fibers with epoxy and bisphenol resin. The experimental investigations of the natural fiber composites were carried out by means of Scanning Electron Microscope and the mechanical properties such as tensile, flexural, compression and hardness properties of the composites without chemically treated fibers were reported.

scholarly journals The Influence of the Addition of Plant-Based Natural Fibers (Jute) on Biocemented Sand Using MICP Method

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4198 ◽  
Author(s):  
Md Al Imran ◽  
Sivakumar Gowthaman ◽  
Kazunori Nakashima ◽  
Satoru Kawasaki
Keyword(s):  
Fiber Length ◽  
Natural Fibers ◽  
Construction Materials ◽  
Soil Improvement ◽  
Fiber Content ◽  
Microbial Interactions ◽  
Engineering Properties ◽  
Precipitation Trend ◽  
Calcareous Sand ◽  
Jute Fibers

The microbial-induced carbonate precipitation (MICP) method has gained intense attention in recent years as a safe and sustainable alternative for soil improvement and for use in construction materials. In this study, the effects of the addition of plant-based natural jute fibers to MICP-treated sand and the corresponding microstructures were measured to investigate their subsequent impacts on the MICP-treated biocemented sand. The fibers used were at 0%, 0.5%, 1.5%, 3%, 5%, 10%, and 20% by weight of the sand, while the fiber lengths were 5, 15, and 25 mm. The microbial interactions with the fibers, the CaCO3 precipitation trend, and the biocemented specimen (microstructure) were also evaluated based on the unconfined compressive strength (UCS) values, scanning electron microscopy (SEM), and fluorescence microscopy. The results of this study showed that the added jute fibers improved the engineering properties (ductility, toughness, and brittleness behavior) of the biocemented sand using MICP method. Furthermore, the fiber content more significantly affected the engineering properties of the MICP-treated sand than the fiber length. In this study, the optimal fiber content was 3%, whereas the optimal fiber length was s 15 mm. The SEM results indicated that the fiber facilitated the MICP process by bridging the pores in the calcareous sand, reduced the brittleness of the treated samples, and increased the mechanical properties of the biocemented sand. The results of this study could significantly contribute to further improvement of fiber-reinforced biocemented sand in geotechnical engineering field applications.

Comparative Study of Sound Absorption Coefficients of Coir/Kenaf/Sugarcane Bagasse Fiber Reinforced Epoxy Composites

2017 ◽  
Vol 730 ◽  
pp. 48-53 ◽  
Author(s):  
Elammaran Jayamani ◽  
Soon Kok Heng ◽  
Muhammad Khusairy bin Bakri ◽  
Sinin Hamdan
Keyword(s):  
Absorption Coefficient ◽  
Sugarcane Bagasse ◽  
Sound Absorption ◽  
Transfer Functions ◽  
Natural Fibers ◽  
Epoxy Composites ◽  
Sound Absorption Coefficient ◽  
Coconut Coir ◽  
Impedance Tube Method ◽  
Bagasse Fiber

This research focuses on the sound absorption coefficient of three different natural fibers reinforced epoxy composites. The natural fibers used are coconut coir, kenaf, and sugarcane bagasse. All of these fibers were mixed with epoxy resin and hardener with a ratio of 4:1. The mixtures were then poured into a circular mold and compressed by using compression molding technique. It was left for curing for 24 hours at standard room temperature. The results were obtained using the two-microphone transfer functions impedance tube method according to ASTM E1050-12. It is found that as the fiber loading increased, the sound absorption coefficient of the composites increased. 20wt% Coconut coir epoxy composites and 20wt% kenaf fiber epoxy composites have the highest sound absorption coefficient with almost similar sound absorption of 0.078 at 5000Hz. While, 20wt% sugarcane bagasse epoxy composites have sound absorption of 0.075 at 5000Hz.

The Effect of Nano Cement on the Compressive Strength of Coconut Fibers Reinforced Concrete Composite

2020 ◽  
Vol 831 ◽  
pp. 110-114
Author(s):  
Riana Herlina Lumingkewas ◽  
Sigit Pranowo Hadiwardoyo ◽  
Abrar Husen ◽  
Saepudin
Keyword(s):  
Compressive Strength ◽  
Reinforced Concrete ◽  
Specific Gravity ◽  
Natural Fibers ◽  
Research Needs ◽  
Coconut Fiber ◽  
Ordinary Concrete ◽  
Fiber Concrete ◽  
Coconut Fibers

The development of nanotechnology continues to grow. The use of nanocement in concrete is expected to reduce the number of pores and improve hydration in concrete and provide more strength to the concrete. The use of natural fibers, in this case, coconut fiber can prevent cracks in concrete and make fiber concrete more ductile than ordinary concrete. The effect of using nanocement on coconut fiber concrete on the strength of the concrete to be studied. Methodology to complete the research objectives, use nanocement used in concrete, which has added coconut fiber. Tests reviewed the value of slump and specific gravity. Then, testing the compressive strength at 7, 24, 28 days. The results obtained were an increase of 48.19% in the strength of concrete. Further research needs to review on mixing nanocement with other natural fibers.

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