scholarly journals Performance of Crumb Rubber Incorporated Ferro Geopolymer Panels under Flexure

2019 ◽  
Vol 8 (4S2) ◽  
pp. 127-133
Keyword(s):  
Fly Ash ◽  
Flexural Strength ◽  
Construction Material ◽  
Research Work ◽  
Base Material ◽  
Crumb Rubber ◽  
Absorption Capacity ◽  
Industrial Wastes ◽  
Partial Substitution ◽  
Metal Mesh

This research work presents the overview of geopolymer mortar application into the ferro cement panel with the incorporation of crumb rubber and Nano fly ash. The geopolymer mortar is prepared by using industrial wastes as a base material such as fly ash and ground granulated blast furnace slag (GGBFS) which generally helps to reduce the level of CO2 emission. Also, the recycled tyre crumb rubber is utilized as a sustainable innovative construction material which is used a partial substitution for sand upto 5% for enhancing the ductility without any strength degradation. These reduces land fill problems and ground water quality degradation problems. Crumb rubber has the ideal capacity to absorb energy from static and other kind of loads. The geopolymer binder preparation is done by utilizing material such as fly ash, GGBFS, alkaline liquid made of NaOH and Na2SiO3 , Nano fly ash. The Nano fly ash is used as an additive which helps in increasing the strength and durability of the element by its pore filling capability. This project aims to enhance the strength of fly ash based geopolymer mortar with the help of GGBFS incorporation. The molarity of alkaline activator, solution to binder ratio and silicate to hydroxide ratio is fixed as 12, 0.4 and 1.5 throughout the process. The mortar cubes and panels were heat cured under hot air oven at 80ᵒ C for 48 hours. The mechanical behavior of geopolymer mortar is assessed by compressive strength test water absorption test. The panel is made of high strength geopolymer mortar and expanded metal mesh with chicken mesh for obtaining higher energy absorption capacity with good deforming ability and less crack pronouncement. The investigation involves finding the initial crack load, ultimate failure load and residual flexural strength ratio. The results show that the tyre inclusion enhances the flexural strength of the ferro geopolymer panel by means of its ductile enhancing capacity

A study on industrial-scale waste utilization in construction material production: the use of fly ash in GRP composite pipe

2020 ◽  
Vol 70 (340) ◽  
pp. 234
Author(s):  
A. Beycioğlu ◽  
H. Mis ◽  
E. D. Güner ◽  
H. Güner ◽  
N. Gökçe
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Construction Material ◽  
Construction Materials ◽  
Waste Utilization ◽  
Industrial Wastes ◽  
Glass Fiber Reinforced ◽  
Axial Tensile ◽  
Long Term Performance ◽  
Term Performance

This study presents a new approach to the utilization of industrial by-products in construction materials by using fly ash (FA) in the production of glass fiber-reinforced polyester (GRP) pipe. The FA was substituted by 10% and 20% (by weight of sand) in the mixtures to produce GRP pipes of 350 mm in diameter and 6 m in length for testing. Stiffness modulus (SM), axial tensile strength (ATS), and hoop tensile strength (HTS) tests were conducted on the produced GRP pipes and their elasticity modulus (EM) values were also calculated. To observe the microstructure of the GRP pipes and the interfacial transition zone of the layers, SEM and microscopic analyses were performed. Furthermore, a strain-corrosion test was conducted to obtain information about long term-performance of samples. The results showed that the FA-filled GRP pipes were found to meet the requirements of the related standards, and that the use of FA in the GRP pipe industry may be an important alternative approach to the utilization of industrial wastes via effective recycling mechanisms.

MECHANICAL PERFORMANCE OF ROLLER COMPACTED RUBBERCRETE WITH DIFFERENT MINERAL FILLER

2017 ◽  
Vol 79 (6) ◽  
Author(s):  
Musa Adamu ◽  
Bashar S. Mohammed ◽  
Nasir Shafiq
Keyword(s):  
Fly Ash ◽  
Flexural Strength ◽  
Silica Fume ◽  
Mechanical Performance ◽  
Fine Sand ◽  
Crumb Rubber ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Mineral Filler ◽  
Scrap Tires

The rate of waste tire generation globally continues to escalate due to increase in vehicle usage. Scrap tires continue to pose serious environmental, health and aesthetic problems. Due limitation in the recycling of scrap tires, one of the most viable solution is to used crumb rubber from scrap tire as partial replacement to fine aggregate in concrete industry. This is rationalized as the production of concrete hit more than 3.8 billion cubic meters annually, therefore, it could provide a solution on conservation of natural aggregate and as well as improve properties of concrete. However, the major setback in the use of crumb rubber in concrete is loss in strength.  In this paper, crumb rubber was used to partially replaced fine aggregate at 0%, 10%, 20% and 30% by volume in roller compacted concrete for pavement applications to produce roller compacted rubbercrete (RCR) to improve its flexural strength and ductility. Several trials were done to achieve the combined grading as recommended by ACI 211.3R, and finally a combination of 55% fine aggregate, 40% coarse aggregate and 5% fine sand as mineral filler was used. In order to mitigate the effect of strength loss, silica fume and fly ash were used to replace natural fine sand as mineral fillers. The Results showed that fresh density, compressive, splitting and flexural strengths decreases with increase in partial replacement of fine aggregate with crumb rubber. However using silica fume as a mineral filler was successful in mitigating loss in compressive, tensile and flexural strengths for up to 20% crumb rubber replacement level, while fly ash as a mineral filler mitigated loss in strength for up to 10% crumb rubber compared natural fine sand mineral filler. The flexural strength was found to increase with 10% crumb rubber for all type of mineral filler

scholarly journals Effect of the Addition of Agribusiness and Industrial Wastes as a Partial Substitution of Portland Cement for the Carbonation of Mortars

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7276
Author(s):  
Wilfrido Martinez-Molina ◽  
Hugo L. Chavez-Garcia ◽  
Tezozomoc Perez-Lopez ◽  
Elia M. Alonso-Guzman ◽  
Mauricio Arreola-Sanchez ◽  
...  
Keyword(s):  
Portland Cement ◽  
Research Work ◽  
Test Chamber ◽  
Bottom Ash ◽  
Concrete Structures ◽  
Industrial Wastes ◽  
Partial Substitution ◽  
Green Materials ◽  
Front Advance ◽  
Durability Of Concrete

The present research work shows the effect on the carbonation of Portland cement-based mortars (PC) with the addition of green materials, specifically residues from two groups: agricultural and industrial wastes, and minerals and fibres. These materials have the purpose of helping with the waste disposal, recycling, and improving the durability of concrete structures. The specimens used for the research were elaborated with CPC 30R RS, according to the Mexican standard NMX-C-414, which is equivalent to the international ASTM C150. The aggregates were taken from the rivers Lerma and Huajumbaro, in the State of Michoacan, Mexico, and the water/cement relation was 1:1 in weight. The carbonation analyses were performed with cylinder specimens in an accelerated carbonation test chamber with conditions of 65 +/− 5% of humidity and 25 +/− 2 °C temperature. The results showed that depending on the PC substitutions, the carbonation front advance of the specimens can increase or decrease. It is highlighted that the charcoal ashes, blast-furnace slags, and natural perlite helped to reduce the carbonation advance compared to the control samples, consequently, they contributed to the durability of concrete structures. Conversely, the sugarcane bagasse ash, brick manufacturing ash, bottom ash, coal, expanded perlite, metakaolin, and opuntia ficus-indica dehydrated fibres additions increased the velocity of carbonation front, helping with the sequestration of greenhouse gases, such as CO2, and reducing environmental pollution.

scholarly journals A study based upon the effect of polyvinyl alcohol fiber, iron slag and fly ash over the strength aspects of geo-polymer concrete

2021 ◽  
Vol 889 (1) ◽  
pp. 012051
Author(s):  
farhan Maqbool ◽  
Jagdish Chand
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Polyvinyl Alcohol ◽  
Room Temperature ◽  
Research Work ◽  
Polymer Concrete ◽  
Result Section ◽  
Polyvinyl Alcohol Fiber ◽  
Iron Slag

Abstract In this research work fly ash, iron slag and polyvinyl alcohol fiber was utilized to enhance the strength parameters of the concrete. Fly ash and iron slag were used as replacement of the cement and polyvinyl alcohol fiber was used as an additive at 0 %, 2 %, 3 % and 4 %. After this several samples were casted and then verified for numerous test. Compressive strength test was executed and it finds out that concrete containing Polyvinyl Alcohol fibers (with different curing methods) was showing increasing strength as compared to concrete deprived of Fiber. Specimens of oven cured samples shown a large increase in strength as compared to room temperature curing as shown in the result section. Compressive strength increases up to three percent of adding Polyvinyl Alcohol fiber after that strength decreasing. Flexure strength was carried on the Geo-Polymer concrete with different curing techniques and result show’s an impressive increase in flexural strength, but room temperature cured specimens show lesser growth as compared oven cured specimens. But not lower than concrete which didn’t have Polyvinyl Alcohol fiber in it. Flexural strength increases up to three percent of adding Polyvinyl Alcohol fiber in both the curing techniques and decreases at four percent as shown in the result section. Split tensile test was also carried out for both the curing techniques oven curing and room temperature curing. The samples which were cured in oven curing show impressive growth in strength. Maximum split tensile strength attained at three percent of adding Polyvinyl Alcohol fiber. With the help of UPV, it was found that the concrete that makes with the help of a Polyvinyl Alcohol Fiber is of good quality as shown in results.

scholarly journals Durability Experiences on the Traditional and SCM Founded Blended Concrete

2021 ◽  
pp. 1-4
Author(s):  
Eti Tirumala Chakrapani ◽  
◽  
A M N Kashyap ◽  
G Anjaneyulu ◽  
M R Manikanta ◽  
...  
Keyword(s):  
Fly Ash ◽  
Environmental Sustainability ◽  
Blast Furnace Slag ◽  
Construction Material ◽  
Industrial Wastes ◽  
Raw Material ◽  
Granulated Blast Furnace Slag ◽  
Chemical Admixtures ◽  
Cement Manufacture ◽  
Furnace Slag

Concrete might be the maximum substantially used construction material in the global with approximately six billion tones being produced each year. It is best subsequent to water in phrases of in keeping with-capita consumption. However, environmental sustainability is at stake both in terms of damage due to the extraction of raw material and CO2 emission all through cement manufacture. This brought pressures on researchers for the discount of cement intake by means of partial substitute of cement by using supplementary materials. These materials may be obviously happening, industrial wastes or by way of-products that are less energy extensive. Fly ash and Ground Granulated Burnt Slag (GGBS) are selected specifically based totally on the standards of fee and their long lasting qualities., Not best this, Environmental pollution also can be decreased to a point due to the fact the emission of dangerous gases like carbon monoxide & carbon dioxide are very restricted. These substances (referred to as pozzalonas) when combined with calcium hydroxide, reveals cementitious compositions. Most commonly used pozzalonas are fly ash, silica fume, met kaolin, ground granulated blast furnace slag (GGBS). This wishes to look at the admixtures performance whilst combined with concrete so as to ensure a discounted existence cycle fee. The present research consists of three phases and reports the specializes in investigating characteristics of M35grade concrete .In the 1st phase the behavior of standard and SCM concrete (7.5%FA and 7.5%GGBS) of M35 grade specimens with different percentages of chemical admixtures curing with acids such as HCL. 2nd phase the same grade of specimens curing with Alkaline such as NaOH and in the 3rd phase the same grade of specimens curing with sulphate solution MgSO4 and finally assess the losses of mechanical properties and durability considerations of the concrete due to these conditions were reported.

scholarly journals An Investigation on Durability and Ductulity of Concrete using Fly Ash and Fibre Glass

2020 ◽  
Vol 6 (7) ◽  
pp. 170-174
Author(s):  
Eedi Divya , Ch Bhaskara Teja
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Glass Fibers ◽  
Research Work ◽  
Fibre Glass ◽  
Durability Properties ◽  
Cement Manufacturing ◽  
The Look ◽  
Energy Plants

Concrete enterprise is dealing with the environmental impact, via the emission of CO2 while cement manufacturing. Cement partly replaced with pozzolanic waste fabric like fly ash reduces the freeing of CO2. Fly ash is made of thermal energy plants. Due to the usage of glass fibers to standard concrete has a big compressive strength and flexural Strength. This research work deals the look at of different grades (M30, M40) of GFRC by means of partial substitute of cement with fly ash. In keeping with mix proportions, standard sizes of specimens are casted that allows you to locate the durability properties, ductility and flexural power? Durability properties are performed with the aid of checking out the specimens for sulphate and acid assaults. Whereas ductility and flexural energy is received from pressure-pressure curves. And acquired results are as compared to traditional concrete. Its miles been determined from this research is that, ductility, sturdiness and flexural electricity is higher for GFRC than traditional concrete.

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

Long-Term Durability Studies on Chemically Treated Reclaimed Asphalt Pavement Material as a Base Layer for Pavements

2017 ◽  
Vol 2657 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Anand J. Puppala ◽  
Aravind Pedarla ◽  
Bhaskar Chittoori ◽  
Vijay Krishna Ganne ◽  
Soheil Nazarian
Keyword(s):  
Fly Ash ◽  
Asphalt Pavement ◽  
Construction Material ◽  
El Paso ◽  
Base Material ◽  
The United States ◽  
Base Layer ◽  
Reclaimed Asphalt Pavement ◽  
Reclaimed Asphalt

For several years reclaimed asphalt pavement (RAP) material has been used as a construction material in hot-mix asphalt (HMA) to reduce material costs and stabilize pavements. Of the 45 million tons of RAP produced every year in the United States, only 33% is being used in HMA. Recent studies have demonstrated that RAP can be used effectively in base layers when it is blended with aggregate base materials and stabilized with cement or fly ash additives. This adoption in the pavement base layer helps maximize the reutilization of RAP material and minimize its disposal in landfills, thereby making it an environmentally friendly practice. However, studies reported so far addressed only the strength and stiffness characteristics of stabilized RAP in base layers in the short term, and not many studies have addressed its long-term behavior. In this study the long-term durability of untreated as well as stabilized specimens was tested by conducting standard durability testing to replicate the moisture fluctuations in the field from seasonal variations. In addition, leachate studies were conducted to examine the effect of rainfall infiltration on the leachability of the cement or fly ash stabilizer from stabilized RAP mixtures. Durability studies revealed a very low volumetric change and good retaining strength at the end of three, seven, and 14 cycles for RAP material from the El Paso, Texas, area, and leachate tests proved that the leaching of cement or fly ash stabilizer from RAP mixes cannot be considered to be a concern for long-term performance. However, approximately 2 years of field infiltration were replicated in the laboratory in this study. Of the several RAP mixtures studied, the mixture composed of 60% RAP and 40% base material with 2% cement was identified as an effective long-term-performing mixture.

scholarly journals Corrosion Behaviour of High-Strength Al 7005 Alloy and Its Composites Reinforced with Industrial Waste-Based Fly Ash and Glass Fibre: Comparison of Stir Cast and Extrusion Conditions

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3929
Author(s):  
Praveen Kumar Swamy ◽  
Shantharaja Mylaraiah ◽  
Manjunath Patel Gowdru Chandrashekarappa ◽  
Avinash Lakshmikanthan ◽  
Danil Yurievich Pimenov ◽  
...  
Keyword(s):  
Fly Ash ◽  
Corrosion Rate ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Research Work ◽  
Glass Network ◽  
High Strength ◽  
Stir Casting ◽  
Extrusion Process ◽  
Industrial Wastes

The stringent demand to develop lightweight materials with enhanced properties suitable for various engineering applications is the focus of this research work. Industrial wastes such as fly ash (FA) and S-glass-fibres (GF) were used as reinforcement materials for high-strength alloy, i.e., Al 7005. Stir casting routes were employed for fabricating the four samples, Al 7005, Al 7005 + 5% GF, Al 7005 + 6% FA and Al 7005 + 5% GF + 6% FA. The extrusion process with different extrusion ratios (ER: 5.32:1, and 2.66:1) was used to examine the properties of all four samples. Extruded samples with ER: 5.32: 1 resulted in equiaxed grains with refined structure compared to stir casting parts. The effect of the extrusion process and the addition of reinforcements (GF and FA) on the gravimetric, electrochemical, and electrochemical impedance corrosion behaviour of Al 7005 composites in 1M HCl (Hydrochloric acid) solution were investigated. The results of all three corrosion methods showed that Al 7005 + 6% FA exhibited higher corrosion resistance. Corrosion rate of Al 7005, Al 7005 + 5% GF, Al 7005 + 6% FA and Al 7005 + 5% GF + 6% FA is found equal to 3.25, 2.41, 0.34, and 0.76 mpy, respectively. The FA particles remain inert and act as a physical barrier with corrosive media during the corrosion test. GF undergoes fibre degradation or disrupts the continuity of the glass network as a result of fibre leaching, which increases the corrosion rate in the sample. The gravimetric study showed that the corrosion rates decreased with an increase in extrusion ratio, which might be due to corrosion passivation increases and improved properties. The scanning electron microscopy reveals that corrosion fits, flakes and micro-cracks were observed more in the as-cast composites than that of extrusion composites, promoting the corrosion rate.

Mechanical Properties of Cement Composites with Alternative Binders

2015 ◽  
Vol 1106 ◽  
pp. 37-40 ◽  
Author(s):  
Karel Šeps ◽  
Iva Broukalová
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Flexural Strength ◽  
Portland Cement ◽  
Compression Strength ◽  
Raw Materials ◽  
Partial Substitution ◽  
Cement Composites ◽  
Flexural Tests ◽  
Recycled Material

The paper refers to previous research in the field recycling and reuse of secondary raw materials. It deals with utilization of micro-grounded recycled material and fly-ash as a partial substitution of Portland cement in cementitious composites. Six sets of test specimens with varying recipe were prepared for testing of mechanical properties. Flexural strength was tested on specimens 40x40x160 mm and then compression strength was measured on fragments from flexural tests. Results of tests are presented and discussed.

Sign in / Sign up

Export Citation Format

Share Document