scholarly journals The Analysis of Size and Arrangement Effects of Petung Bamboo Split Fiber to the Matrix Interface Bond with Laminated Bamboo Split Fiber as Construction Materials for Wooden Vessels

2020 ◽  
Vol 9 (3) ◽  
pp. 3432-3438
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Shear Test ◽  
Strength Test ◽  
Matrix Interface ◽  
Compressive Test ◽  
Laminated Bamboo ◽  
The Matrix ◽  
Interface Bond Strength ◽  
Interface Bond

Bamboo is an extraordinary natural material. Bamboo can grow quickly, is cheap and widely available. The material property is light but harder and stronger than wood or glass fiber composites. The purpose of this study was to determine the effect ofarrangement and size of petung bamboo split fiber to the matrix interface bond of laminated bamboo split fiber. The benefits of this study can contribute knowledge and innovation to the development of science in the field of vessel material technology in education field, especially in the field of shipping. This research was carried out by compressive test, tensile test, and shear test to the matrix interface bond of laminated bamboo and petung bamboosplit fiber with the tangential and radial test directions (x, y, and z axis) using the ASTM D143 standard.After testing, it can be concluded that the tensile strength and compressive strength of the brick arrangement is better, while for the shear strength, it is better in the parallel arrangement, furthermore the thicker the bamboo split size, the greater the stress value. The average results obtained for tensile test is 44 kg/cm2 , the shear test is 38,5 kg/cm2 , and the compressive test is 341,05 kg/cm2 . The average compressive strength of these results can be classified into Strong Class III on BKI (Indonesian Classification Bureau) of Wooden Ships. The direction of the best tensile strength test is on the Y axis, the direction of the best shear strength test is on the Z axis, and the direction of the best compressive strength is on the X axis. The higher the glue Interface value for each cm2 , the greater the interface bond strength due to the need of glue in mm/cm2 is higher, on the contrary the lower the glue Interface value in each cm2 , the lower the interface bond strength due to the need of glue in mm/cm2 is lower.

scholarly journals Effect of Fibre Hybridisation on Mechanical Properties of Cementitious Composites

2019 ◽  
Vol 9 (2) ◽  
pp. 1573-1579
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Cementitious Materials ◽  
Strength Test ◽  
Supplementary Cementitious Materials ◽  
Modulus Of Rupture ◽  
Low Velocity Impact ◽  
Split Tensile Strength ◽  
Steel Fibres ◽  
The Matrix

Conventional cement based composites have constituent materials such as Portland cement, supplementary cementitious materials, fine sand, super-plasticizer and water. To achieve high performance, these composites needs high cement content in it which will cause high cost of production. Addition of supplementary cementitious materials as partial substitutes for cement will help in reducing the cost. In this study, a pre-characterized mix proportion of cementitious composite, in which 30% of cement was substituted with lime powder. To enhance the ductility of the composite, the matrix is reinforced with 2% (by volume of composite) of crimped steel fibres. Further, hybridisation of metallic and non-metallic fibres is done in this study to bring the self-weight of the mix down and to reduce the chances of degradation due to the corrosion of fibres. Fibre hybridisation was done by replacing 25%, 50%, 75% and 100% by volume of steel fibres with poly propylene (PP) fibres. The characterisation of the fibre reinforced composites was done by assessing their workability by conducting flow test, compressive strength test, split tensile strength test, flexure test and low velocity impact test. It was observed that, the mix with 100% of steel fibres replaced with PP fibres exhibited better workability. It was also observed that, compressive strength, split tensile strength, modulus of rupture and impact resistance were maximum for the mix reinforced with steel fibre alone and the strengths got reduced gradually due to hybridisation of fibres. Based on the requirement of strength, a combination of steel and PP fibres can be used for reinforcing the matrix, which will help in improving ductility, reducing self-weight. By this, the matrix can be made more resistant to corrosion and can be used in structures especially in the marine environment.

The effect of ageing duration on the mechanical properties of Al alloy 6061-garnet composites

2001 ◽  
Vol 215 (2) ◽  
pp. 113-119
Author(s):  
S C Sharma
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Al Alloy ◽  
Destructive Testing ◽  
Transmission Electron ◽  
Heat Treated ◽  
The Matrix ◽  
Reinforcing Particle ◽  
Alloy 6061

A well-consolidated composite of Al alloy 6061 reinforced with 4, 8 and 12 wt% garnet was prepared by a liquid metallurgy technique, the composite was heat treated for different ageing durations (T6 treatment), and its mechanical properties were determined by destructive testing. The results of the study indicated that, as the garnet particle content in the composites increased, there were marked increases in the ultimate tensile strength, compressive strength and hardness but there was a decrease in the ductility. There was an improvement in the tensile strength, compressive strength, and hardness with ageing due to precipitation. Precipitation in Al alloy 6061, with and without garnet particulate reinforcement, was studied using transmission electron microscopy. The fracture behaviour of the composites was altered significantly by the presence of garnet particles and the crack propagation through the matrix, and the reinforcing particle clusters resulted in final fracture.

scholarly journals PENGARUH PENGGUNAAN LIMBAH PLASTIK POLYPROPYLENE (PP) SEBAGAI CAMPURAN AGREGAT KASAR TERHADAP KUAT TEKAN DAN TARIK PADA BETON FC’ 25 MPA

2019 ◽  
Vol 3 (2) ◽  
pp. 81-89
Author(s):  
Angga Pirman Firdaus ◽  
Jonbi
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Strength Test ◽  
Plastic Waste ◽  
Concrete Mixture ◽  
Strength Testing ◽  
Concrete Compressive Strength ◽  
Tensile Strength Test ◽  
Compressive Strength Test ◽  
Waste Mixture

Indonesia ranks second in the world's largest plastic waste producer after China. Each year, Indonesia can contributeup to 187.2 million tons of plastic waste, while China reaches 262.9 million tons of plastic waste. Based on the data, one way to utilize plastic waste by using plastic waste as a mixture of concrete, where the plastic used is polypropylene (PP) plastic with different percentage of concrete mixture, the test includes compressive strength test and tensile concrete. The results of concrete compressive strength testing with polypropylene (PP) plastic waste mixture of 5%, 10% and 15% at age 28 in aggregate aggregate mixture decreased by 5.15%, 6.89% and 13.53%. As for the result of concrete tensile strength test with polypropylene (PP) plastic waste mixture of 5%, 10% and 15% at age 28 in crude aggregate mixture decreased 17,61%, 24,13% dan 23,24%.

Experimental Study on Axial Tensile Strength of Low Volume Fraction of Ternary Hybrid Fiber Reinforced Concrete

2014 ◽  
Vol 906 ◽  
pp. 329-334
Author(s):  
Yu Ting Zhu ◽  
Dong Tao Xia ◽  
Bo Ru Zhou
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Steel Fiber ◽  
Polypropylene Fiber ◽  
Strength Test ◽  
Splitting Tensile Strength ◽  
National Standard ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Advantages And Disadvantages

In this paper, according to the national standard and testing methods,the direct tension strength,splitting tensile strength and cubic compressive strength test were carried out for 8 different groups of hybrid fiber (containing steel fiber, macro-polypropylene fiber and dura fiber) reinforced HPC specimens.The results showed that when the volume proportion of ternary hybrid fiber was less than 1%, there was not obvious influence for the concrete compressive strength, but the splitting tensile strength increased by 26% ~ 69%; the ratio between splitting tensile strength and compressive strength for HFRC increased to 1/12~1/9. When added 0.7% steel fiber, 0.19% macro-polypropylene fiber and 0.11% dura fiber, the confounding effect was the best. Based on the advantages and disadvantages of tensile splitting strength and direct tensile strength test and the results of tests, the concept of equivalent tensile strength and calculative formula was put forward .

scholarly journals PENGARUH PENAMBAHAN SERAT KULIT PINANG DAN SERBUK KAYU TERHADAP KUAT TARIK BELAH BETON (Kajian Terhadap Ukuran Agregat Maksimal 10 mm)

2019 ◽  
Vol 9 (1) ◽  
pp. 15-22
Author(s):  
Era Rizky Hasanah ◽  
Agustin Gunawan ◽  
Yuzuar Afrizal
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Test Specimen ◽  
Strength Test ◽  
Wood Powder ◽  
Normal Concrete ◽  
High Compressive Strength ◽  
Tensile Strength Test

Concrete has a high compressive strength, but it is low to tensile strength. The pinang skin fiber and wood powderuse to increase the tensile strength. The purpose of this research is to know the effect of addition toward tensile strength and addition percentage variation in concrete that will get the highest tensile strength.The cylindrical specimens with size of 30 cm high and 15 cm diameter to 20 specimens, they are 4 sample of normal concrete and 16 sample of variation oncrete. The addition of pinang skin fiber and wood powder with variation of 0.25%, 0.5%, 0.75%, and 1% of the weight volume of the specimen with used 50% pinang skin fiber and 50% wood powder.The mixture of concrete uses water cement ratioof 0.5 and 60-100 mm slump.The test specimen is immersed for 26 days and the concrete tensile strength test conducted after the concrete at 28 days adding 7 days for drying.The result of this research shows that the variation concrete of 0.25% and 0.5% have increased of tensile strength than the normal concrete as 12.272% and 4.369%. Beside that for the variation concrete of 0.75% and 1% have decreased as 5.044% and 11.929%. The increase of tensile strength value of optimal concrete is found in variation 0.25% that is 12.272% from normal concrete.

scholarly journals Effect of nanosilica on the mechanical and microstructural properties of a normal strength concrete produced in Nigeria

2020 ◽  
Vol 39 (3) ◽  
pp. 710-720
Author(s):  
I.M. Adamu ◽  
J.M. Kaura ◽  
A. Lawan ◽  
A. Ocholi
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Strength Test ◽  
Supplementary Cementitious Materials ◽  
Hydration Reaction ◽  
Optimal Dosage ◽  
Microstructural Properties ◽  
Conventional Concrete ◽  
Compressive Strength Test ◽  
Normal Strength

The failure of conventional concrete to have classical mechanical properties, reduced permeability and lead to sustainability in concrete production called for the use of supplementary Cementitious Materials (SCM) in concrete to improve its performance. This study investigates the effect of adding optimal dosage of an SCM called nanosilica (nS) on the tensile and compressive strengths, microstructural properties and cement hydration reaction for grade 30 concrete. The optimal dosage of the nS was determined to be 1.5% by weight of cement using compressive strength test. The influence of optimal nS dosage on the concrete properties was investigated using compressive strength test, splitting tensile strength test, Scanning Electron Microscopy (SEM) and Energy Dispersion Spectroscopy (EDS). Results revealed that optimal nS addition led to 30% and 23.3% respective increase in compressive and tensile strengths of conventional concrete at 7days of curing. SEM micrographs show better packing density in the nano-concrete at 90days of curing. EDS shows that addition of optimal nS dosage in concrete led to formation of more C-S-H gels at 90days curing period, and a corresponding reduction in Ca/Si ratio of the nano-concrete to 0.89; a ratio that is very close to that of 14Ǻ tobermorite reported in literature. The optimal nano-concrete can be used where strength improvement, especially at early age and reduction in concrete permeability are requirements. Keywords: Compressive strength, Tensile strength, Normal strength nano-concrete, SEM, EDS.

scholarly journals PERANCANGAN ALAT UJI TARIK MORTAR MENGGUNAKAN TENAGA PENGGERAK MOTOR LISTRIK

2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Sarito Sarito ◽  
Muhtarom Riyadi ◽  
Handi Sudardja
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Building Material ◽  
Civil Engineering ◽  
Strength Test ◽  
Fine Aggregate ◽  
Trial Period ◽  
Tensile Strength Test ◽  
Engineering State

ABSTRACTMechanic characteristics of hard mortar are: compressive strength, flexural strength, tensile strength, and adhesion power. In the meantime, at Building Material Laboratory of Civil Engineering, State Polytechnic of Jakarta, test of tensile strength and adhesion power of mortar cannot be conducted because of the absence of the test equipment.This research aims to provide electric motor-powered equipment for tensile strength test of mortar in order to complete the equipment at Building Material Laboratory of Civil Engineering, State Polytechnic of Jakarta. The particular aim of the research is to make prototype of mortar tensile strength test equipment.In this research a prototype of motor-powered mortar tensile strength test equipment and the specimens, to test the performance of the equipment, were prepared. By examining the obstacles and shortcomings, this equipment is a development of the previous research by Muhtarom Riyadi and the team, 2015. The specimens, as the sample to test the equipment, were prepared by the ratio of one part of cement and three part of fine aggregate, with the total number of the specimens of 50 pieces.By analyzing the result of observation in trial period, the equipment could function as it should be. The magnitude of maximum tensile strength that causes the mortar specimens to break depends on the quality, age, and tensile area of mortar, which magnitude can be observed in manometer or scale with the unit of kilogram.Keywords: equipment, tensile, mortar, electric motorABSTRAKSifat mekanis mortar keras antara lain kuat tekan, kuat lentur, kuat tarik dan daya lekat. Sementara ini di Laboratorium bahan bangunan Jurusan Teknik Sipil Politeknik Negeri Jakarta untuk uji kuat tarik dan daya lekat mortar belum bisa dilaksanakan karena belum adanya peralatan untuk melakukan pengujian.Penelitian ini bertujuan untuk membuat alat uji tarik mortar menggunakan tenaga penggerak motor listrik guna melengkapi peralatan yang diperlukan di Laboratorium bahan bangunan Jurusan Teknik Sipil Politeknik Negeri Jakarta. Target khusus yang ingin dicapai adalah membuat prototype alat uji tarik mortar.Dalam penelitian ini akan dibuat prototipe alat uji tarik mortar menggunakan tenaga motor listrik dan cetakan benda ujinya, sekaligus untuk menguji kinerjanya. Alat ini merupakan pengembangan oleh peneliti yang terdahulu Muhtarom Riyadi dan anggotanya, 2015), dengan mencermati kendala dan kekurangannya maka penelitian ini merupakan penyempurnaan penelitian sebelumnya Sebagai sampelnya dibuat benda uji tarik mortar dengan perbandingan 1 bagian semen berbanding 3 bagian pasir, sedangkan jumlah benda uji dibuat sebanyak 50 buah.Hasil pengamatan selama uji coba maka alat alat uji tarik mortar menggunakan tenaga penggerak motor listrik dapat berfungsi sebagaimana mestinya. Besarnya gaya tarik maksimum yang menjadikan benda uji tarik mortar putus tergantung dari mutu mortar, umur serta luas penampang tarik yang nilainya dapat diamatai pada manometer atau timbangan berat dengan satuan kilogramKata kunci : Alat, uji, tarik, mortar, motor listrik

scholarly journals KARAKTERISTIK SELF COMPACTING CONCRETE (SCC) TANPA CURING

2018 ◽  
Author(s):  
erniati
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Fresh Concrete ◽  
Strength Test ◽  
Splitting Tensile Strength ◽  
Good Resistance ◽  
Self Compacting Concrete ◽  
Compressive Strength Test ◽  
Resistance Durability

Self Compacting Concrete (SCC) is one solution to get concrete construction which it has good resistance. Durability of concrete was obtained by the good concrete compaction to be done by a skilled workforce. However, one of the negligence that often occur in the field ie after casting they was ignoring curing of the hardening concrete. This study discusses the workability of fresh concrete and mechanical properties (compressive strength and splitting tensile strength) on SCC without curing. Testing of the concrete workability based on EFNARC standard. The mechanical properties test based on ASTM standards. The method Compressive strength test based on ASTM standards 39 / C 39M - 12a, whereas splitting tensile strength accordance standard ASTM C496 / C496M-11. The results of the study indicate that the SCC without curing effect on the reduction in compressive strength at ages 1, 3, 7, 28, and 90 days in a row at 4.11 MPa (16.1%); 4.90 MPa (13.9%); 6.64 MPa (13.1%); and 6, 72 MPa (12.75%). Splitting tensile strength decreased respectively by 0.1 MPa (3.25%); 0.26 MPa (7.99%); 0.4 MPa (9.52%); and 0.39 MPa (9.16%).

scholarly journals Evaluation of physical-mechanical properties of self-adhesive versus conventional resin cements

2020 ◽  
Vol 19 ◽  
pp. e208204
Author(s):  
Maria Helena Rossy Borges ◽  
Carmen Gilda Tavares Dias ◽  
Cristiane de Melo Alencar ◽  
Cecy Martins Silva ◽  
Renata Antunes Esteves
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Testing Machine ◽  
Strength Test ◽  
Resin Cement ◽  
Resin Cements ◽  
Tensile Strength Test ◽  
Diametral Tensile Strength ◽  
One Way Anova

Aim: The purpose of this study was to compare the microhardness, diametral tensile strength, compressive strength and the rheological properties of self-adhesive versus conventional resin cements. Methods: Specimens of a conventional (RelyX ARC) and 3 self-adhesive (RelyX U200, Maxcem Elite, Bifix SE) types of resin cements were prepared. The Knoop test was used to assess the microhardness, using a Microhardness Tester FM 700. For the diametral tensile strength test, a tensile strength was applied at a speed of 0.6 mm/minute. A universal testing machine was used for the analysis of compressive strength and a thermo-controlled oscillating rheometer was used for the Rheology test. One-way ANOVA and Tukey’s test (α=0.05) were used for data analysis. Results: According to microhardness analysis, all the cements were statistically similar (p>0.05), except for Maxcem that presented lower hardness compared with the other cements in relation to the top surface (p<0.05). In the diametral tensile strength test, Relyx U200 and RelyX ARC cements were statistically similar (p>0.05), presented higher value when compared to the Maxcem and Bifix cements (p<0.05). The compressive strength of RelyX ARC and Maxcem Elite cements was statistically higher than RelyX U200 and Bifix cements (p<0.05). Regarding the rheology test, Maxcem Elite and RelyX ARC cements showed a high modulus of elasticity. Conclusions: The self-adhesive cements presented poorer mechanical properties than conventional resin cement. Chemical structure and types of monomers employed interfere directly in the mechanical properties of resin cements.

Effect of Mixing Steel Dust and Shred-Like Steel Fibres on the Properties of Concrete

2019 ◽  
Vol 7 (1) ◽  
pp. 24-29
Author(s):  
A. Ajwad ◽  
N. Khadim ◽  
Abdullah ◽  
U. Ilyas ◽  
M. U. Rashid ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Coarse Aggregate ◽  
Strength Test ◽  
Hardened Concrete ◽  
Normal Concrete ◽  
Steel Fibres ◽  
Coarse Aggregates ◽  
Mix Proportion ◽  
Steel Dust

In this research, fine and coarse aggregates present in the concrete are replaced with steel dust and shred-like steel fibres, respectively in different ratios and its effect on the properties of concrete is studied. Eight batches of concrete were mixed, each with the mix proportion of 1:2:4 and water cement ratio of 0.52. Batch A was of normal concrete. In batches B, C, and D, 5%, 10%, and 15% of sand was replaced with steel dust. In batches, E, F, and G, 2%, 5%, and 8% of coarse aggregate were replaced with steel fibres. In the last batch H, both 5% of sand and 5% of coarse aggregate were replaced with steel fine and steel fibres respectively. British as well as American standards were followed during the research. Slump test was performed in a fresh state of each mix to find the effect of these replacements on workability. 12 cubes of 150mm x 150mm x 150mm for compressive strength test and 12 cylinders of 150mm diameter and 300mm height of each, for tensile strength test were made for each batch to check these strength after 3, 7, 14, 28 days. It was found that the workability of fresh concrete decreases while density of fresh as well as hardened concrete increases with these replacements. It also results in an increase in initial compressive strength and a decrease in final compressive strength as compared to those of normal concrete. As far as tensile strength is concerned an increase in initial as well as final strength was observed.

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