Tensile Characteristics of Coconut Fibers Reinforced Mortar Composites

2013 ◽  
Vol 651 ◽  
pp. 269-273 ◽  
Author(s):  
Riana H. Lumingkewas ◽  
Heru Purnomo ◽  
Gilles Ausias ◽  
Dedi Priadi ◽  
Thibaut Lecompte ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Failure Strain ◽  
Natural Fibers ◽  
Tensile Tests ◽  
Special Treatment ◽  
Microstructural Properties ◽  
Coconut Fiber ◽  
Strength Behavior ◽  
Treatment Water ◽  
Coconut Fibers

Natural fibers such as coconut fibers are numerous in Indonesia. The tensile strength of coconut fibers produced in this country is among the highest of natural fibers ones. This paper is to determine the tensile strength of coconut fibers with or without special treatment (water washing dry) and assessment the ability of coconut fiber for reinforcement in mortar composites. Experimental observations on coconut fibers and mortars carried out. There were tensile tests and scanning electron microscopy (SEM) providing microstructural properties of coconut fibers. The results showed that the coconut fibers treatment increases tensile strength and provides higher failure strain values. It showed that coconut fibers largely improved tensile strength behavior of mortar composites. To a conclusion, the coconut fibers are able to be used as reinforcement for ductile mortar composites.

Effect of Fibers Content on the Tensile Properties of Coconut Fibers Reinforced Cement Mortar Composites

2013 ◽  
Vol 742 ◽  
pp. 92-97 ◽  
Author(s):  
Riana H. Lumingkewas ◽  
Gilles Ausias ◽  
Thibaut Lecompte ◽  
Arnaud Perrot ◽  
Irwan Katili ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Failure Strain ◽  
Cement Mortar ◽  
Natural Fibers ◽  
Tensile Behavior ◽  
Fiber Content ◽  
Mass Ratio ◽  
Coconut Fiber ◽  
Reinforced Cement ◽  
Coconut Fibers

The coconut fiber presents higher ductile properties than other natural fibers. In previous studies, it demonstrated than Indonesian coconut fibers presents an improved tensile strength and failure strain after washed with water and dried. The coconut fibers have the potential to reinforce material for construction, especially in earthquake areas such as tropical countries. The purpose of this research is to assess the benefit brought by coconut fibers content on the tensile behavior of mortar composite. Splitting tensile strengths were measured and microstructure observed using scanning electron microscopy (SEM). The influence of fiber content (expressed by a mass ratio fiber/cement) is investigated. The results show that a fiber content of 5% allows a 10 times higher deflection and presents a 1.5 times higher tensile strength than mortar without fiber. Further studies will focus on the bond strength between the fiber and the cement mortar matrix.

Effect of Fibers Length and Fibers Content on the Splitting Tensile Strength of Coconut Fibers Reinforced Concrete Composites

2017 ◽  
Vol 748 ◽  
pp. 311-315 ◽  
Author(s):  
Riana H. Lumingkewas ◽  
Abrar Husen ◽  
Rendy Andrianus
Keyword(s):  
Tensile Strength ◽  
Fiber Length ◽  
Plain Concrete ◽  
Fiber Content ◽  
Splitting Tensile Strength ◽  
Mass Ratio ◽  
Coconut Fiber ◽  
Strength Behavior ◽  
Fiber Concrete ◽  
Coconut Fibers

Tests on the Indonesian coconut fiber showed that, compared to the results of previous studies, tensile strength and tension failure improved after the fiber was washed with water and dried. This study aims to obtain the effects of fiber length and fiber content on splitting tensile strength behavior of the concrete composite reinforced with coconut fiber. Experimental observations were carried out on the splitting tensile strength of coconut fibers as determined by the fiber content (1, 2, 3, and 4 % by a mass ratio of fiber per cement) and the length of the fibers (5, 20, 40 mm) in the concrete. The results show that a coconut fiber length of 5 mm and a fiber content of 3 % in fiber concrete composite gives the composite 1.28 times higher splitting tensile strength than plain concrete. The density of the fiber concrete composite decreases with the addition of coconut fiber content.

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.

MECHANICAL PROPERTIES OF COCONUT FIBER-REINFORCED CONCRETE

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Gino Ng ◽  
Girum Urgessa ◽  
Yared Shifferaw ◽  
Harianto Hardjasaputra
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Flexural Strength ◽  
Natural Fibers ◽  
Fiber Reinforced Concrete ◽  
Sustainable Construction ◽  
Fiber Reinforced ◽  
Coconut Fiber ◽  
Concrete Plates ◽  
Coconut Fibers

The use of natural fibers in concrete has significantly increased in recent years as a result of the push for sustainable construction. Coconut fibers, also known as coir fibers, have been used as natural fibers in concrete, particularly in some parts of Asia. This paper presents an experimental study that investigates the use of coconut fibers in concrete. Two baseline concrete mix designs were selected based on design standards with a water-cement ratio of 0.4 and 0.5 respectively. For each baseline mix design, four 20 cm x 20 cm x 1 cm concrete plates were constructed by varying the percentage of coconut fibers by weight of cement. The fiber contents studied are 0%, 0.1%, 0.175%, and 0.25%. The concrete plates were then tested to determine the mechanical properties of the coconut fiber-reinforced concrete and comparisons were made with the mix designs with 0% coconut fiber content. The results show that adding coconut fibers increases the flexural strength of concrete plates. This is particularly beneficial for low scale construction applications such as those in concrete tile production. For both mix designs, adding 0.25% of coconut fibers increased the flexural strength of the concrete plates by 90% when compared to concrete with no coconut fibers.

scholarly journals Effect of Mercerization and Acetylation on Properties of Coconut Fiber and its Influence on Modified Bitumen

2014 ◽  
Vol 5 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Ivy A. W. Tan ◽  
W. H. WU ◽  
Ron A. Chan ◽  
Leonard L. P. Lim
Keyword(s):  
Softening Point ◽  
Agricultural Waste ◽  
Natural Fibers ◽  
Chemical Characterization ◽  
Coconut Fiber ◽  
Modified Bitumen ◽  
Chemical Treatments ◽  
Chemically Treated ◽  
Enhanced Properties ◽  
Coconut Fibers

 Coconut fiber, one of many types of natural fibers, is an agricultural waste which is left unutilized after the coconut fruits and juice are extracted. In this research, the effect of the different chemical treatments on the morphological, chemical and physical properties of coconut fiber and its influence on the properties of the modified bitumen were studied. The mercerization effectively altered the surface morphology and reduced the diameter of the coconut fiber. The waxy layer present on the surface of the coconut fiber was significantly reduced after mercerization. Acetylation reported minor reduction on the waxy layer and did not cause any significant changes on the diameter of the coconut fiber. The chemical characterization reported that the hemicelluloses were present only on the surface of the natural coconut fiber whereas the peak of Fourier Transform Infrared spectra associated with the presence of waxes was observed for natural and chemically treated coconut fibers. The bitumen modified with chemically treated coconut fibers exhibited lower penetration values and higher softening point. From the analyses of penetration value, softening point and penetration index, the bitumen modified with 10% NaOH and 50% CH3COOH treated coconut fibers resulted in enhanced properties for paving binders to be used in warmer region.

scholarly journals Analisa Pengaruh Penggunaan Serat Serabut Kelapa dalam Presentase Tertentu pada Beton Mutu Tinggi

2015 ◽  
Vol 6 (2) ◽  
pp. 208 ◽  
Author(s):  
Eduardi Prahara ◽  
Gouw Tjie Liong ◽  
Rachmansyah Rachmansyah
Keyword(s):  
Tensile Strength ◽  
Concrete Beams ◽  
High Strength ◽  
Strong Relationship ◽  
Test Results ◽  
Coconut Fiber ◽  
Additional Material ◽  
Strength Concrete ◽  
Cylinder Compression ◽  
Coconut Fibers

The use of additional material as ingredients in the manufacture of concrete mixes is increasingly growing. The material used is also increasingly varied, depending on the expected results. This research aims to know the influence of the addition of coconut fibres material with percentage of 1,5 %, 2 %, 2,5 %, and 3 % as an alternative to the strength of high-quality concrete. Research methods done by producing cylindrical and beam concrete samples for testing against the force then conducted concrete. Furthermore, the analysis has been done and the results of testing and comparing the respective strength of the composition of concrete produced. Based on the test results of data concrete cylinder compression strength and tensile strength concrete beams, it was concluded that the increasing of compressive strength up to 9% can be reached by use of additional material coconut fibers 1,5%and increasing of tensile strength up to 19,7% can be reached by use of additional coconut fiber 2%. Therefore, the additional coconut fibers on concrete mixture has strong relationship to increase tensile strength of high strength concrete.

Tensile Test of High Strength Thinner Curaua Fiber Reinforced Polyester Matrix Composite

2016 ◽  
Vol 869 ◽  
pp. 361-365 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Noan Tonini Simonassi ◽  
Rômulo Leite Loiola ◽  
Michel Picanço Oliveira
Keyword(s):  
Tensile Strength ◽  
Natural Fibers ◽  
High Strength ◽  
Tensile Tests ◽  
Fiber Composites ◽  
Matrix Composites ◽  
Lignocellulosic Fibers ◽  
Lignocellulosic Fiber ◽  
Polyester Matrix ◽  
Curaua Fibers

In recent years natural fibers, especially those lignocellulosic extracted from plants, have gained attention owing to their engineering performance as polymer composite reinforcement. It was found that some of these lignocellulosic fibers, such as the curaua, ramie and sisal may reach tensile strength above 1000 MPa in association with very thin diameters. Therefore. the objective of the present work was to fabricate polyester matrix composites with the highest tensile strength possible, by reinforcing with the thinnest continuous and aligned curaua fibers. Tensile tests results of composites reinforced with 30% volume of these thinnest curaua fibers showed a tensile strength of 135 MPa, which corresponds to one of the highest strength attained for lignocellulosic fiber composites.

scholarly journals Determination and Review of Physical and Mechanical Properties of Raw and Treated Coconut Fibers for Their Recycling in Construction Materials

Fibers ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 37
Author(s):  
Huyen Bui ◽  
Nassim Sebaibi ◽  
Mohamed Boutouil ◽  
Daniel Levacher
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Natural Fibers ◽  
Construction Materials ◽  
Physical And Mechanical Properties ◽  
Coconut Fiber ◽  
Vegetable Fibers ◽  
Durability Properties ◽  
The Past ◽  
Coconut Fibers

In order to reduce the dependency on conventional materials and negative environmental impacts, one of the main responsibilities of the construction field is to find new eco-friendly resources to replace the traditional materials partially. Natural fibers were known as potential candidates for the reinforcement of structures in civil engineering by virtue of their advantages. Among the different kinds of vegetable fibers, coconut fiber has been exploited in a limited way over the past few years. This paper aims at evaluating the different properties of local coconut fibers (Vietnam). Several laboratory tests provide geometrical, physical, mechanical properties and durability properties that are compared with literature results obtained from similar natural fibers. The local coconut fibers tested demonstrated properties suitable for reinforced mortars. With adequate control of their preparation, they could be reused in the manufacture of mortars in the construction.

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.

scholarly journals Promoting natural fiber from bark of Hibiscus tiliaceus as rope to reduce marine pollution from microplastic fiber yield from synthetic rope

2020 ◽  
Vol 158 ◽  
pp. 04007
Author(s):  
I Wayan Surata ◽  
Tjokorda Gde Tirta Nindhia ◽  
Dwiki Marsetio Widagdo
Keyword(s):  
Tensile Strength ◽  
Natural Fiber ◽  
Failure Strain ◽  
Marine Pollution ◽  
Uv Light ◽  
Natural Fibers ◽  
Single Fiber ◽  
Marine Area ◽  
Fiber Yield ◽  
Naoh Solution

Synthetic ropes are popular for application in marine boat as docking, anchor, tow, and sailing. The advantages of synthetic ropes are waterproof, strong and durable, can be designed for sinks or floats and able to stretches. Synthetic ropes are stronger, more resistant to rotting than ropes created from natural fibers. Synthetic ropes also possess certain disadvantages of slipperiness, and can be damaged more easily by UV light. Synthetic ropes is recognizes as a source of microplastic fiber pollutant in marine area. In this work a bark of Hibiscus tiliaceus three is introduced as candidate source of natural fiber for rope to reduce number of microplastic fiber pollutant from synthetic rope. The bark was taken from a trunk with diameter around 20 cm. The bark was immersed in water for 7 days and subsequently was soaked in 5% NaOH solution for 2 hours. Fiber obtained then was dried. It was prepared 7 valid single fiber samples. The average of tensile strength of single fiber obtained by using this method is found around 44.604 MPa. The average of Modulus elasticity E is found 365.864 MPa. The failure strain is found 11.6 %.

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