Performance Improvement of Tetraethylorthosilicate Consolidated Andesite Rock by Adding Titanium Tetraisopropoxyde and Silica Particles

2020 ◽  
Vol 21 (1) ◽  
pp. 24
Author(s):  
Nahar Cahyandaru ◽  
Endang Tri Wahyuni ◽  
Nuryono Nuryono
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Rheological Property ◽  
Performance Improvement ◽  
Rice Husk Ash ◽  
Young Modulus ◽  
Silica Particles ◽  
Weight Percentage ◽  
Gelling Time ◽  
Percentage Ratio

A study to improve the performance of andesite mortar and rock consolidated with tetraethylorthosilicate (TEOS) sol and a solvent of ethanol in the presence of titanium tetraisopropoxyde (TTIP) and silica particles has been conducted. The improvements include minimizing the shrinkage using silica particles from rice husk ash, rheological property suitability of the consolidant, and mechanical properties of the consolidated mortar and rock. The effect of TTIP concentration, ethanol volume, and addition of the silica particles on rheological properties of TEOS-based consolidant, and also mechanical properties of the consolidated mortar and rock were evaluated. The results showed that the increase of TTIP content in the consolidant shortens the gelling time, and the weight percentage ratio of TTIP:TEOS:ethanol of 5%:55%:40% was the optimum composition for the consolidation. Consolidation of andesite block using that composition significantly increased the compressive strength up to 57.61% (0.58 kgf/mm2). The addition of 2% of silica particles into the consolidant decreased the gel shrinkage and increased the Young modulus of the mortar. The presence of water in the andesite matrix reduced the consolidation performance, and 0.5% was the maximum percentage of water content acceptable for the consolidation.

scholarly journals A Study on Mechanical Properties of Al7068 Based Metal Matrix Composite Reinforced with Rice Husk Ash (RHA) and Silicon Carbide (SiC)

2021 ◽  
Vol 7 (09) ◽  
pp. 71-78
Author(s):  
Syed Akbar Ali and B.S Motgi
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Compressive Strength ◽  
Powder Metallurgy ◽  
Rice Husk ◽  
Metal Matrix ◽  
Rice Husk Ash ◽  
Structural Behavior ◽  
Weight Percentage ◽  
Powder Metallurgy Route

This paper deals with the fabrication of Al-7068 composites manufactured by powder metallurgy route reinforced with different weight percentages of rice husk ash (RHA) and SiC. A low pressure of 400mpa was applied for compacting the composites and sintered at a temperature of 720°C for three hour. SEM and EDX analysis was done to study the micro-structural behavior. Hardness and compression test were carried out. The hardness has been improved by adding the weight percentage of SiC but seems to be crash by adding the weight percentage of Rice Husk Ash (RHA). The compressive strength was found to be varying.

Use of Water Glass from Rice Husk and Bagasse Ashes in the Preparation of Fly Ash Based Geopolymer

2019 ◽  
Vol 798 ◽  
pp. 364-369 ◽  
Author(s):  
Khemmakorn Gomonsirisuk ◽  
Parjaree Thavorniti
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Rice Husk ◽  
Ball Mill ◽  
Water Glass ◽  
Rice Husk Ash ◽  
Raw Materials ◽  
Agricultural Waste ◽  
Preparation Process

The aim of this work is to study the feasibility of preparation of fly ash based geopolymer using sodium water glass from agricultural waste as alternative activators. Rice husk ash and bagasse ash were used as raw materials for producing sodium water glass solution. The sodium water glass were produced by mixing rice husk ash and bagasse ash with NaOH in ball mill and boiling. The prepared sodium water glass were analyzed and used in geopolymer preparation process. The geopolymer paste were prepared by adding the obtained water glass and NaOH with fly ash. After cured at ambient temperature for 7 days, mechanical properties were investigated. Bonding and phases of the geopolymer were also characterized. The geopolymer from rice husk ash presented highest compressive strength about 23 MPa while the greatest for bagasse ash was about 16 MPa.

scholarly journals Effects on Mechanical Properties of Recycled PET in Cement-Based Composites

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Liliana Ávila Córdoba ◽  
Gonzalo Martínez-Barrera ◽  
Carlos Barrera Díaz ◽  
Fernando Ureña Nuñez ◽  
Alejandro Loza Yañez
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Compressive Strength ◽  
Compressive Strain ◽  
Young Modulus ◽  
Silica Sand ◽  
Chemical Compositions ◽  
Particle Sizes ◽  
Recycled Pet ◽  
Scanning Electron

Concretes consisting of portland cement (OPC), silica sand, gravel, water, and recycled PET particles were developed. Specimens without PET particles were prepared for comparison. Curing times, PET particle sizes, and aggregate concentrations were varied. The compressive strength, compressive strain at yield point, and Young modulus were determined. Morphological and chemical compositions of recycled PET particles were seen in a scanning electron microscopy. Results show that smaller PET particle sizes in lower concentrations generate improvements on compressive strength and strain, and Young’s modulus decreases when the size of PET particles used was increased.

scholarly journals Effect of Short Fiber Reinforcement on Mechanical Properties of Hybrid Phenolic Composites

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Sembian Manoharan ◽  
Bhimappa Suresha ◽  
Govindarajulu Ramadoss ◽  
Basavaraj Bharath
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Loss Modulus ◽  
Basalt Fiber ◽  
Barium Sulphate ◽  
Dynamic Mechanical Properties ◽  
Damping Factor ◽  
X Ray ◽  
Weight Percentage ◽  
Dynamic Mechanical

Fiber plays an important role in determining the hardness, strength, and dynamic mechanical properties of composite material. In the present work, enhancement of viscoelastic behaviour of hybrid phenolic composites has been synergistically investigated. Five different phenolic composites, namely, C1, C2, C3, C4, and C5, were fabricated by varying the weight percentage of basalt and aramid fiber, namely, 25, 20, 15, 10, and 5% by compensating with barium sulphate (BaSO4) to keep the combined reinforcement concentration at 25 wt%. Hardness was measured to examine the resistance of composites to indentation. The hardness of phenolic composites increased from 72.2 to 85.2 with increase in basalt fiber loading. Composite C1 (25 wt% fiber) is 1.2 times harder than composite C5. Compression test was conducted to find out compressive strength of phenolic composites and compressive strength increased with increase in fiber content. Dynamic mechanical analysis (DMA) was carried out to assess the temperature dependence mechanical properties in terms of storage modulus (E′), loss modulus (E′′), and damping factor (tan δ). The results indicate great improvement of E′ values and decrease in damping behaviour of composite upon fiber addition. Further X-ray powder diffraction (XRD) and energy-dispersive X-ray (EDX) analysis were employed to characterize the friction composites.

Water Absorption and Mechanical Properties of Cements Based on Poly (Methyl Methacrylate) (PMMA) as Function of Hydroxyapatite (HA) Content

2008 ◽  
Vol 396-398 ◽  
pp. 493-496
Author(s):  
D. Ionita ◽  
G. Tihan ◽  
A.T. Marques
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Methyl Methacrylate ◽  
Water Absorption ◽  
Mechanical Characterization ◽  
Setting Time ◽  
Young Modulus ◽  
Point Of View ◽  
Maximum Strength ◽  
Poly Methyl Methacrylate

The purpose of this study is the obtaining of different orthopedic materials and chemical and mechanical characterization. The chemical tests used were setting time, water absorption and from the point of view of mechanical properties the Young modulus, compressive strength, and maximum strength. Also, the surface of orthopedic bioceramics materials was characterized by porosity test.

Mechanical Properties of Reinforced Polymer Concrete with Three Types of Resin Systems

2022 ◽  
pp. 1-24
Author(s):  
Mostafa Hassani Niaki ◽  
Morteza Ghorbanzadeh Ahangari ◽  
Abdolhossein Fereidoon
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Impact Strength ◽  
Flexural Strength ◽  
Polyurethane Foam ◽  
Basalt Fiber ◽  
Polymer Concrete ◽  
Weight Percentage ◽  
Reinforced Polymer

This paper studies the mechanical properties of polymer concrete (PC) with three types of resin systems. First, the effect of 0.5 wt% up to 3 wt% basalt fiber on the mechanical properties of a quaternary epoxy-based PC is investigated experimentally, and the best weight percentage of basalt fiber is obtained. The results show that adding basalt fiber to PC caused the greatest enhancement within 10% in compressive strength, 10% in flexural strength, 35% in the splitting tensile strength, and 315% in impact strength. In the next step, the effect of nanoclay particles on the mechanical properties of basalt fiber-reinforced PC (BFRPC) is analyzed experimentally. Nanoclays increase the compressive strength up to 7%, flexural strength up to 27%, and impact strength up to 260% but decrease the tensile strength of the PC. Field-emission scanning electron microscopy (FESEM) analysis is performed to study the fracture surface and morphology of various concrete specimens. In the last step, we consider the effect of two other different resin systems, rigid polyurethane and rigid polyurethane foam on the mechanical properties of reinforced polymer concrete. A comparison study presents that the epoxy PC has a higher specific strength than the polyurethane and ultra-lightweight polyurethane foam PC.

Effect of Thermal Expansion and Sonication on Mechanical Properties and Adhesive Toughness Measurement of Polymer/Graphene Composite

2017 ◽  
Vol 889 ◽  
pp. 14-18 ◽  
Author(s):  
Nurul Idani Che Berhanuddin ◽  
Syaiful Azmirul Mohd Rozlan ◽  
Izzuddin Zaman ◽  
Mohammad Sukri Mustapa ◽  
Mohd Ezree Abdullah ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Expansion ◽  
Low Cost ◽  
Testing Machine ◽  
Young Modulus ◽  
Expanded Graphite ◽  
Maximum Load ◽  
Weight Percentage ◽  
Facile Fabrication ◽  
Toughness Measurement

Graphite has attracted both academia and researchers due to its outstanding properties such as having strength 200 times stronger than steel, great efficiency of heat and electricity conduction, low cost and also facile fabrication. In this study, two facile approaches of producing nanosize graphite were performed; thermal expansion and sonication. Graphite that was produced are used as reinforcement in epoxy composite for adhesive applications. In order to determine the mechanical properties of the composite, tensile test was performed using Dumbbell shape of sample. The outcome of the test shows that 1 wt% of expanded graphite produce the highest value of Young Modulus which is 18 MPa. It was also found that adding more expanded graphite increased the ductility of composite by lowering epoxy brittleness. As for adhesive testing, double cantilever beam was used using Universal Testing Machine where the result shows that 1 wt% of expanded graphite demonstrates the highest value of adhesive toughness which is 9398 J/m2. The result of porosity-density indicates that porosity of composites will affect the mechanical properties. From the overall results, it is conclude that smaller weight percentage of expanded graphite produces better composite while for sonication process shows no difference at all. Thus demonstrates that time of dispersion does not give significant effect on the maximum load and stress of the composites.

scholarly journals Mechanical Performance Efficiency and Wear Coefficient of PLA-HAZrO2 in Bones Replacements

2019 ◽  
Vol 35 (3) ◽  
pp. 1062-1066
Author(s):  
Fadhil K. Farhan ◽  
Jafer F. Odah ◽  
Ahmed Namah Mohamed
Keyword(s):  
Mechanical Performance ◽  
Ceramic Powder ◽  
Young Modulus ◽  
Ultrasonic Waves ◽  
Homogeneous Distribution ◽  
Mechanical Mixing ◽  
Weight Percentage ◽  
Pin On Disc ◽  
Biphasic Ceramic ◽  
Percentage Ratio

In the current study, biological polymer base polylactic acid (PLA) composites subsidized with biphasic ceramic powder (HAZrO­2) was prepared and developed using active mechanical mixing method. Hydroxyapatite (HA) with size of 52nm was mixed with zirconium dioxide with size of 42 nm at 1:1 mixing proportion via ceramic ball mill (350 rpm for four hours). The prepared sample was mixed with polymeric powder at (0%, 2%, 4%, 6% and 8%) weight percentage ratio. Afterwards, fluidic mixing and ultrasonic waves methods were used to synthesize the final nanocomposites. Pin-On-Disc method was used to measure wear and the results outputted high advisable nanocomposites with reactance to the cankering compared to PLA alone. Vickers microhardness investigations appear demonstrably acceptable and with exponential enhancement with the incrementing percentage ratio of reinforcing materials. In addition, Young modulus and the absorption energy tests (using Charpy method) showed a high improvement in the mechanical properties of the reinforced n-HAZrO2 powder. All the results were obtained depending on the homogeneous distribution of the nanopowder using both Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) techniques.

Comparative Study between SiC Reinforced Al 64430 Metal Matrix Composites and RHA Reinforced Al 64430 Metal Matrix Composites

2015 ◽  
Vol 1119 ◽  
pp. 234-238 ◽  
Author(s):  
Meena Laad ◽  
Vijaykumar S. Jatti ◽  
Satyendra Yadav
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Metal Matrix Composites ◽  
Rice Husk ◽  
Metal Matrix ◽  
Rice Husk Ash ◽  
Agricultural Waste ◽  
Industrial Applications ◽  
Matrix Composites ◽  
Weight Percentage

The excellent mechanical properties of Aluminium Metal Matrix Composites find applications in a variety of engineering applications in the automotive, aerospace and heavy machinery industries. This study aims at synthesis and characterization of Al 64430 reinforced with SiC particles and Rice Husk Ash (RHA). Rice husk ash is an agricultural waste which is produced in millions of tons worldwide. Aluminium was used as the base metal. With liquid metallurgy technique the metal matrix composites were prepared. The MMCs were synthesized with 3 % weight percentage RHA in Al metal matrix and the mechanical properties such as hardness, tensile strength and structural properties of MMCs were studied. The microstructure of the synthesized composites was examined by optical emission microscope and XRD. The Vicker’s microhardness test was performed on the composite specimens from base of the cast. The synthesized MMCs were found to have increased tensile strength, hardness, increased ultimate strength. The density of MMCs was observed to be decreased. This study indicates that RHA can be used as reinforcement material to synthesize light weight composites with increased hardness, tensile strength, Young’s modulus for various industrial applications.

Mechanical Properties of Dental Nanocomposites Reinforced with Polyhedral Oligomeric Silsesquioxane(POSS)

2009 ◽  
Vol 79-82 ◽  
pp. 345-348 ◽  
Author(s):  
Xiao Rong Wu ◽  
Wei Li Xie ◽  
Yi Sun ◽  
Shou Hua Sun
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Spectroscopic Technique ◽  
X Ray Diffraction ◽  
Flexure Strength ◽  
X Ray ◽  
Weight Percentage ◽  
The Matrix ◽  
Double Bond Conversion ◽  
Oligomeric Silsesquioxane

The objective of this study was to incorporate POSS-MA into the polymeric matrix to develop a new kind of nanocomposite. The effect of different weight percentage of POSS incorporated into the matrix on the mechanical properties was also evaluated. Infrared spectroscopic technique and X-ray diffraction were used to characterize their microstructures and double bond conversion. With only 2wt% POSS added, the nanocomposite’s flexural strength increased 15%, compressive strength increased 12%, hardness increased 15% and uncommonly, even the toughness of resins obviously increased. With 5wt% POSS polymerized, compressive strength increased from 192MPa to 251MPa and compressive modulus increased from 3.93GPa to 6.62GPa, but flexure strength began to decline from 87MPa to 75MPa. The nanocomposites incorporated with POSS showed greatly improved mechanical properties, and increased wear resistance and service life. The mechanism of reinforcement was also discussed.

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