Effect of Silica-Based Wastes on Wear Rate and Hardness Properties of Epoxy Composites as a Construction Material

2021 ◽  
Vol 895 ◽  
pp. 31-40
Author(s):  
Rusul Jaber Ghayyib ◽  
Awham Jumah Salman ◽  
Zahraa Fakhri Jawad ◽  
Zainab S. Al-Khafaji
Keyword(s):  
Wear Resistance ◽  
Fly Ash ◽  
Wear Rate ◽  
Polymer Composites ◽  
Silica Fume ◽  
Construction Material ◽  
Epoxy Adhesive ◽  
Glass Addition ◽  
Mineral Additive ◽  
Minimum Wear

In this study, polymer composites were manufactured with epoxy-based resin and wastes as a mineral additive. The wastes including a high content of silica (Silica fume, glass and fly ash) powder were used as fillers for an epoxy adhesive to improve its wear resistance properties. They were supplemented to mixes in various ratios via substituting the resin from 0 to 20% by weight. Tests of wear rate and hardness were conducted upon all-polymer composites at all fillers ratios. Results indicated that the epoxy hardness increased with increasing the filler addition. Consequently, the addition of wastes that include silica raised the wear resistance of polymer composites; nevertheless, it caused the composites harder materials. The wear rate decreased with increasing the silica fume, glass, and fly ash addition. In the case of fly ash addition, the minimum wear rate was at 15%, and after this percentage, the wear rate increased. However, in the case of glass addition, the minimum wear rate was at 10%, and after this percentage, the wear rate increased.

Effect Multiple Addition (TiO2 and Fly Ash) on Wear Behavior and Hardness of 2024 Al Alloy

2021 ◽  
Vol 1039 ◽  
pp. 201-208
Author(s):  
Ruaa A. Salman ◽  
Naser K. Zedin
Keyword(s):  
Wear Resistance ◽  
Fly Ash ◽  
Wear Rate ◽  
Wear Behavior ◽  
Weight Percent ◽  
Al Alloy ◽  
Sliding Speed ◽  
Multiple Addition

This research is devoted to study the effect of addition (2%) TiO2 with different weight percent of fly ash particulate (0, 2, 4, 6%) to 2024 Al alloy on the wear behavior and hardness. The alloy was fabricated by the liquid metallurgy method. The results founds that the wear rate decreased from 0.55 with 0% fly ash to 0.18 at addition percentage of 6% fly ash. Also, the results reveal increasing the samples wear rate with increasing the load and loaded time. The rate of wear was decreased with increasing the sliding speed. Also, the values of hardness increased from 120VH to 160VH with rising the fly ash from 0% to 6%. Keywords: Fly Ash addition, TiO2, 2024 Al Alloy, Wear Resistance, Hardness.

Anti-Irradiation and Wear Resistance of Polyimide Composites

2017 ◽  
Vol 267 ◽  
pp. 253-257
Author(s):  
Jing Fu Song ◽  
Gai Zhao ◽  
Qing Jun Ding ◽  
Jin Hao Qiu
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Polymer Composites ◽  
High Performance ◽  
Atomic Oxygen ◽  
Proton Irradiation ◽  
Nano Particles ◽  
Space Environment ◽  
High Performance Polymer ◽  
The Individual

Space exploitation and development need high-performance polymer based tribo-materials in order to reduce the weight and improve the reliability of mechanical moving components. However, the wear resistance of polymer composites will decrease after space irradiation. In order to improve the anti-irradiation and wear resistance, the high performance polyimide (PI) composites reinforced with aramid fibers (AF), filled with polytetrafluoroethylene (PTFE) and Al2O3were designed and prepared using hot press sintering. The effect of the individual atomic oxygen or proton irradiation as well as both on the tribological properties of the PI composites were systematically investigated against Si3N4 ball on a ball-on-disk test rig under simulating space environment system, and coefficient of friction and wear rate were considered as responses. The worn surfaces of the composites were observed by scanning electrical microscopy to reveal wear mechanisms of the materials’ damage. Experimental results indicated that the wear rate of the PTFE/AF/PI greatly increased after atomic oxygen and proton irradiation due to oxidation degradation effect on the polymer matrix. However, filling Al2O3 nano-particles into polyimide matrix can improve the wear resistance because of oxidation layer, gradually formulated during the process of atomic oxygen irradiation, which can protect the polymer composites and avoid further oxidation. This study will expect to provide the helpful guidance for designing high performance polymer based frictional materials in the application of space science.

scholarly journals Sulfate attack and embedded steel corrosion resistances of volcanic-aggregate concrete with fly ash and silica fume

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Abaho G. Gershome ◽  
Jean de Dieu Mutabaruka ◽  
Leopold Mbereyaho
Keyword(s):  
Corrosion Resistance ◽  
Fly Ash ◽  
Silica Fume ◽  
Construction Material ◽  
Construction Materials ◽  
Steel Corrosion ◽  
Sulfate Attack ◽  
River Sand ◽  
Concrete System ◽  
Supplementary Cementing Materials

Construction materials are increasingly on high demand in the developing world. The construction industry has a challenge of discovering, new  alternative construction materials to conventional materials which are locally available materials in environmentally friendly manner. The  experimental tests are conducted on volcanic concrete system to analyze its properties especially corrosion resistance potential for its applicability in construction. The major aim is to investigate its suitability and corrosion resistance potential especially when used in construction of structures with embedded steel. The test results of the material show that volcanic concrete system with 30% fly ash and 10% silica fume cementing materials is an alternative green construction material. Permeability properties are reduced by 8% and 24% with 30% fly ash and 10% silica fume respectively. Tests also indicate that Compressive strength, Corrosion potential and polarization resistance in volcanic concrete system with supplementing  cement materials has more potential to resist sulfate attack when compared with conventional volcanic concrete systems. The supplementary cementing materials (SCM) reduce the pore system and hence decrease the ingress of corrosive ions an  water in concrete. Corrosive ions, moisture and air would initiate corrosion to the embedded steel in concrete leading to reduced service life such structures. Key word: Supplementary Cementing Materials, Sulfate attack, volcanic concrete system, Granite powder, river sand, Corrosion of embedded steel

scholarly journals Geopolymer Brick by using Flyash, GGBS, Silica Fume and Kadapa Slab Dust

2019 ◽  
Vol 8 (3) ◽  
pp. 2541-2545
Keyword(s):  
Sustainable Development ◽  
Compressive Strength ◽  
Fly Ash ◽  
Water Content ◽  
Silica Fume ◽  
Building Material ◽  
Construction Material ◽  
Base Material ◽  
Material Combination ◽  
Building Component

Brick is the former construction material, a standard-sized non load bearing building component. The ancient bricks manufactured by clay, earth or mud. By 2007 the new ‘fly-ash’ brick made up of cement and flyash which is reliable, weather & acid resistant. The cement is a hugely used building material and liberates CO2 leading to pollution. To minimize pollution and a step to advancement in sustainable development. The current research results to geo polymer brick, where the cement is replaced with GGBS, silica fume and Kadapa slab dust. For bonding, polymers were used with limited water content. Hence produced brick is a hybrid geo polymer brick with multi material combination. Fly ash 75%- GGBS 25% as a base material. GGBS is partially replaced with silica fume and Kadapa slab dust by 2 to 5%. Evaluated through compressive strength results in which we found three optimum proportions such as FA 75%-GGBS22%-SF3% & 75% FA-22% GGBS -3% KSP

Optimization of Friction Stir Processing Parameters for the Development of Cu-W Surface Composite

2019 ◽  
Vol 969 ◽  
pp. 864-869
Author(s):  
Ramavath Bheekya Naik ◽  
G. Madhusudhan Reddy ◽  
S. Kanmani Subbu ◽  
R. Arockia Kumar
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Friction Stir Processing ◽  
Volume Fraction ◽  
Wear Behavior ◽  
Pure Copper ◽  
Taguchi Optimization ◽  
Friction Stir ◽  
Surface Composite ◽  
Minimum Wear

The present work focusses on improving the surface wear resistance of commerical pure copper by reinforcing tungsten particles through friction stir processing. Particularly this work adopts Taguchi’s experimental design to achieve minimum wear rate for Copper-Tungsten surface composite by optimizing the process parameters. The rotational and traverse speeds of tool and volume fraction of reinforcement (i.e. tungsten) are the chosen parameters for minimizing the wear rate. Taguchi L9 orthogonal array was used to design the experiments. The surfaces of the processed specimens were investigated by optical microscopy for the distribution of tungsten particles and sliding wear behavior was studied by conducting pin-on-disc method. It was observed from the optical micrographs that the reinforcement evenly dispersed in the processed zone. The measured hardness was 85% higher than the base metal for the specimen exhibited minimum wear rate. The effects of all three parameters on wear rate were studied. The minimum wear rate was achieved by using rotational and traverse speeds of tool, 1200rpm and 60mm/min, respectively. The amount of reinforcement required to achieve maximum wear resistance was 10%. Variance analysis showed that amount of reinforcement played a key role in determining the properties than the other parameters. Keywords: Cu-W composite, high strength high conductivity alloy, friction stir processing, Taguchi optimization

scholarly journals EXPERIMENTAL STUDY OF HIGH STRENGTH CONCRETE OF M90 GRADE USING UNPROCESSED FLY ASH AND SILICA FUME

2021 ◽  
Vol 6 (5) ◽  
Author(s):  
Ajit R. Sapkal ◽  
Alankar V. Jadhav ◽  
M.V. Nagendra
Keyword(s):  
Carbon Dioxide ◽  
Fly Ash ◽  
Silica Fume ◽  
High Strength Concrete ◽  
Construction Material ◽  
High Strength ◽  
Cementitious Materials ◽  
Mineral Admixtures ◽  
The Sustainable Development ◽  
Strength Concrete

– Concrete is the most widely used construction material in overall world due to its various advantages in the infrastructural industries. The production of cement causes atmospheric and environmental pollution by emitting carbon dioxide into the atmosphere. Pozzolonic by products from electrical industries are supplimentory cementitious materials such as GGBS, fly ash, slag, Rice Husk are utilized in recent years as cement alternative material for growing HSC with progressed workability, energy and durability with decreased permeability. High strength concrete (HSC) is made with adding mineral admixtures like silica fume, fly ash in the concrete. Using cementitious materials such as unprocessed fly ash and silica fume in the High strength concrete mix gives benefits in various ways. Also these materials reduces emission of carbon dioxide in the atmosphere. So that, It gives an environment friendly concrete for the sustainable development. Preparing high strength concrete by using these cementitious materials with super plasticizers gives required strength.

scholarly journals Trial to Determine Durability and Serviceability for Swine Farm in Thailand

2018 ◽  
Vol 206 ◽  
pp. 02001 ◽  
Author(s):  
L Lapcharatsangroj ◽  
U-tapao Chalida
Keyword(s):  
Fly Ash ◽  
Acid Solution ◽  
Silica Fume ◽  
Animal Feed ◽  
Construction Material ◽  
Swine Farm ◽  
Conventional Concrete ◽  
The Face ◽  
Key Issues ◽  
Low Wear

In agricultural construction, the most frequently used construction material is concrete. In particular swine farm, traditional concrete flooring system in the business is conventional concrete. However, the conventional concrete floor has several key issues on its surface. They are easily to be spalled and cracked, pig scour, rough areas, and low wear resistance of acid from animal feed. This research involves study in the ratio between Portland cement and supplementary materials (fly ash and silica fume) that is the most resistant to abrasion. Concrete samples were cured in water for 28 days, then submersed in lactic acid solution at 30 °C (pH 2-3). After exposure to the acid solution, every 7, 14, 28, and 56 days, the samples will be test for attrition on the face of concrete in accordance with ASTM C944 to simulate the acceleration reaction refer to animal behaviour and corrosion from acid of feed. From experiment, it was found that increasing the volume of fly ash and silica fume can increase concrete resistance to corrosion due to acid derived from feed.

COMPRESSIVE STRENGTH AND THERMAL CONDUCTIVITY OF WATER AND AIR CURED PORTLAND CEMENT-FLY ASH-SILICA FUME MORTARS

2018 ◽  
Vol 17 (9) ◽  
pp. 2023-2030
Author(s):  
Arnon Chaipanich ◽  
Chalermphan Narattha ◽  
Watcharapong Wongkeo ◽  
Pailyn Thongsanitgarn
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Fly Ash ◽  
Portland Cement ◽  
Silica Fume

Increasing in wear resistance of excavating machine elements

2020 ◽  
pp. 306-308
Author(s):  
V.S. Bochkov
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Abrasive Wear ◽  
Thermomechanical Treatment ◽  
Cold Work ◽  
Hadfield Steel ◽  
Outer Side ◽  
Viii And Ix ◽  
Machine Elements ◽  
The Impact

The relevance of the search for solutions to increase the wear resistance of bucket teeth of excavating machine type front shovel is analyzed. The reasons for the wear of the teeth are considered. It is determined that when excavating machines work for rocks of VIII and IX categories, impact-abrasive wear of the inner side of the teeth and abrasive external wear occurs. It is proved that the cold-work hardening of Hadfield steel (the teeth material), which occurs during the excavating machine teeth work in the rocks of VIII and IX categories, reduces the impact-abrasive wear rate on the inner side of the teeth and does not affect the abrasive wear of the outer. The methods for thermomechanical treatment of the outer side of the excavating machine tooth is proposed. It can increase the wear resistance of Hadfield steel (110G13L) up to 1.7 times and lead to the self-sharpening effect of the tooth due to equalization of the wear rate of the outer and inner parts of the tooth. The efficiency factor of thermomechanical treatment to reduce the of abrasive wear rate of Hadfield steel is experimentally proved.

Sign in / Sign up

Export Citation Format

Share Document