scholarly journals Utilization of Red Mud-Fly Ash Reinforced with Cement in Road Construction Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Sarath Chandra K ◽  
Krishnaiah S ◽  
Kibebe Sahile
Keyword(s):  
Fly Ash ◽  
Red Mud ◽  
Industrial Waste ◽  
Construction Material ◽  
Road Construction ◽  
Dry Weight ◽  
Strength Properties ◽  
Environmental Threat ◽  
The Right ◽  
The Impact

Industrialization is the key to the growth of any country’s economy. However, on the other hand, the production of industrial waste is increasing enormously, which adversely impacts the environment and natural resources. Red mud is also a widespread industrial waste produced during aluminium extraction from bauxite ore in Bayer’s process. Red mud is a highly alkaline material that creates a massive environmental threat in nature. To reduce the impact of this solid waste material, the ideal method is to use it in construction works with appropriate stabilization. This study envisages the strength properties of red mud with fly ash and cement to use it as a road construction material in the subgrade. The influence of fly ash and cement on improving the strength properties of red mud was studied in detail by replacing red mud with 10%, 20%, and 30% with fly ash and 1%, 3%, and 5% of cement to its dry weight. The CBR (California bearing ratio) value was increased from 1.58% to 11.6% by stabilizing red mud with fly ash and cement, which can be used as a road construction material. The UCS (unconfined compressive strength) of red mud was increased from 825 kPa to 2340 kPa upon curing for 28 days with the right mix of fly ash and cement. Along with the strength properties, the chemical analysis of leachate for the best suitable mix was performed according to the TCLP method to understand the hazardous materials present in the red mud when it is injected as ground material. Both strength properties and the leachate characteristics prove that the red mud with suitable fly ash and cement is an excellent material in road constructions.

scholarly journals ANALYSIS INFLUENCE OF CEMENT OF THE ASPHALT PAVEMENT DEMOLITION MATERIAL ON ROADS SEMARANG-DEMAK-INDONESIA

2017 ◽  
pp. 73-78
Author(s):  
P. Pratikso ◽  
A. Purwanto ◽  
S. Sudarno
Keyword(s):  
Compressive Strength ◽  
Technology Development ◽  
Cement Content ◽  
Asphalt Pavement ◽  
Construction Material ◽  
Road Construction ◽  
Dry Weight ◽  
Natural Material ◽  
Road Infrastructure ◽  
Asphalt Cement

Natural resources such as natural material such as stone, sand, asphalt which has long been used by humans for road construction because of the limited experience any material taken will collide with the preservation of the environment so that the construction work of road infrastructure obstacles and ultimately can lead to the work stalled road infrastructure. To overcome these problems it is necessary to the implementation of the technology development of road infrastructure by using recycled (recycling). The purpose of this study is to determine levels of cement that can be used for the top layer foundation (base course) with recycled materials mixed asphalt cement / Cement Treated Recycling Base (CTRB) on road rehabilitation Semarang - Demak and to determine the uncondifined compressive strength that occurs so that the material can be reused as construction material pavement layer. This study uses an experimental method in the laboratory with a cylindrical specimen diameter of 7 cm height of 14 cm made of asphalt pavement scratching Semarang-Demak roads with cement content variation 0%, 1.5%, 3%, 4.5%, 6% and 7.5% is used for testing the uncondifined compressive strength / (UCS) at the age of 7 days, 21 days, 14 days and 28 days. The results show that the addition of cement content will increase the value of the dry weight insignificantly, but will rise UCS value significantly and utilization of scratching asphalt cement with added material from these laboratory experiments can increase the carrying capacity CTRB construction. Levels of cement that meets the requirements of Unconfined Compressive Strength (UCS) for the construction of Cement Treated Recycling Base (CTRB) is between 6% to 7.5%. According to the results of research it is economically to used cement content at average of 6.75% for road rehabilitation works Semarang - Demak has met the required UCS test.

A critical review on tribological properties, thermal behavior, and different applications of industrial waste reinforcement for composites

2020 ◽  
pp. 146442072097243 ◽  
Author(s):  
Swati Gangwar ◽  
Vimal Kumar Pathak
Keyword(s):  
Fly Ash ◽  
Red Mud ◽  
Industrial Waste ◽  
Hybrid Composites ◽  
Industrial Wastes ◽  
Reinforced Composites ◽  
Manufacturing Costs ◽  
Comprehensive Review ◽  
Marble Dust ◽  
Future Potential

Industrial wastes such as marble dust, fly ash, and red mud have progressed as an environmental hazard that needs to be disposed or utilized for minimizing the ecological pollution problems and manufacturing costs. Over the years, there is an increasing interest among researchers in utilizing these industrial wastes as reinforcement for developing economic and lightweight monolithic or hybrid composites. In the same context, this paper presents a comprehensive review on the aspects of tribology and thermal performance of industrial waste such as marble dust, fly ash, and red mud as reinforcement for different monolithic and hybrid composites. The review also describes different applications for industrial waste material reinforced composites. Finally, the paper concludes with authors’ perspective of the review, conclusion summary, and future potential of industrial waste filled composites in different industries for obtaining a sustainable and cleaner environment.

scholarly journals Utilization of Industrial Waste Pulp And Palm Oil on Growth and Results of Corn (Zea mays L) On Peat

2020 ◽  
Author(s):  
mulono apriyanto bin sugeng rijanto
Keyword(s):  
Fly Ash ◽  
Palm Oil ◽  
Industrial Waste ◽  
Dry Weight ◽  
Randomized Design ◽  
Straight Line ◽  
Maize Varieties ◽  
Main Plot ◽  
Completely Randomized Design ◽  
Plot Design

This study aims to determine the merits of various industrial waste pulp and palm oil as well as getting the most appropriate formulation ongrowth and yield of maize varieties Earth-3 and NK-212 in peatlands. Research using split plot design using the design of completely randomized design(CRD) and each treatment was repeated 3 times. Varieties as the main plot consists of: (V1): Varieties of Earth-3, (V2): Varieties of NK-212. Treatmentsubplot, consisting of six formulations ameliorant, namely: F1 (60% OPEF + 20% GPB + 10% Dregs + 10% Fly ash), F2(60% OPEF + 10% GPB + 20%Dregs + 10% Fly ash ), F3(60% OPEF + 10% GPB + 10% Dregs + 20% Fly ash), F4(40% OPEF + 30% GPB + 10% Dregs + 20% Fly ash), F5(40%OPEF + 20% GPB + 30% Dregs + 10% Fly ash) and F6(40% OPEF + 10% GPB + 20% Dregs + 30% Fly ash). The data obtained were stat isticallyanalyzed using analysis of variance (ANOVA) followed by HSD test at 5% level.The results showed that various formulations of industrial waste pulp andpalm oil gave similar results to the root dry weight, dry weight of straw, hay root ratio, the diameter of the cob, corncob, corncob without the husk and dryseed weight. It can be seen from the cob generated a large and long and close cob husk well (± 98%), beans straight line with a number of seed rows15-16 rows, as well as a uniform crop diversity, is in conformity with the description.

Utilization of Industrial Waste Pulp And Palm Oil on Growth and Results of Corn (Zea mays L) On Peat

2019 ◽  
Author(s):  
mulono apriyanto bin sugeng rijanto
Keyword(s):  
Fly Ash ◽  
Palm Oil ◽  
Industrial Waste ◽  
Dry Weight ◽  
Growth And Yield ◽  
Randomized Design ◽  
Straight Line ◽  
Maize Varieties ◽  
Main Plot ◽  
Plot Design

This study aims to determine the merits of various industrial waste pulp and palm oil as well as getting the most appropriate formulation on growth and yield of maize varieties Earth-3 and NK-212 in peatlands. Research using split plot design using the design of completely randomized design (CRD) and each treatment was repeated 3 times. Varieties as the main plot consists of: (V1): Varieties of Earth-3, (V2): Varieties of NK-212. Treatment subplot, consisting of six formulations ameliorant, namely: F1 (60% OPEF + 20% GPB + 10% Dregs + 10% Fly ash), F2(60% OPEF + 10% GPB + 20% Dregs + 10% Fly ash ), F3(60% OPEF + 10% GPB + 10% Dregs + 20% Fly ash), F4(40% OPEF + 30% GPB + 10% Dregs + 20% Fly ash), F5(40% OPEF + 20% GPB + 30% Dregs + 10% Fly ash) and F6(40% OPEF + 10% GPB + 20% Dregs + 30% Fly ash). The data obtained were statistically analyzed using analysis of variance (ANOVA) followed by HSD test at 5% level.The results showed that various formulations of industrial waste pulp and palm oil gave similar results to the root dry weight, dry weight of straw, hay root ratio, the diameter of the cob, corncob berkelobot, corncob without the husk and dry seed weight. It can be seen from the cob generated a large and long and close cob husk well (± 98%), beans straight line with a number of seed rows 15-16 rows, as well as a uniform crop diversity, is in conformity with the description.

scholarly journals Efficacy of Class C Fly Ash as a Stabilizer for Marginal Residual Soil

2020 ◽  
Vol 5 (1) ◽  
pp. 97-104
Author(s):  
M Umar ◽  
H. M. Alhassan
Keyword(s):  
Fly Ash ◽  
Road Construction ◽  
Strength Properties ◽  
Ash Content ◽  
Engineering Properties ◽  
Dry Density ◽  
Residual Soil ◽  
Compression Tests ◽  
Two Samples ◽  
Class C

Two laterites samples known for their deficiency in road construction were used to assess the efficacy of Class C fly ash in improving their engineering properties. The two samples were taken from Danbare and Dausayi localities within Kano Metropolis and the fly ash was sourced from the Nigerian Coal Corporation, Enugu. Preliminary tests on the two samples confirmed their deficiency for use in road construction. The processed fly ash was blended with the laterite samples at 0, 3, 6, 9, 12, 15 and 18%. Hence, the treated soil samples were tested for plasticity, compaction and strength properties. Results obtained revealed reduction in plasticity properties as the fly ash contents increased. Similarly, Maximum Dry Density (MDD) decreased as the fly ash content increased while the Optimum Moisture Content (OMC) of the treated soils increased for the two samples. Peak CBR values of 16 and 35% were obtained at 9 and 15% fly ash contents for samples 1 and 2, respectively. The unconfined compression tests showed considerable improvement in strength properties higher than the values of the natural soils. The peak 7 days strength of 630 and 1410 kN/m2 were observed at 12% and 15% fly ash content for samples 1 and 2, respectively.

The removal of As(V) ions by lime-modified fly ash and reuse of the exhausted adsorbent as an additive for construction material

2020 ◽  
Author(s):  
Milica Karanac ◽  
Maja Đolić ◽  
Vladimir Pavićević ◽  
Aleksandar Marinković
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Low Cost ◽  
Construction Material ◽  
Thermal Power ◽  
Construction Materials ◽  
Practical Applications ◽  
The Impact ◽  
By Products ◽  
Modified Fly Ash

<p>Coal thermal power plants (TPP) actively generate numerous solid combustion by-products, including fly ash and bottom ash. These TPP by-products have already found use in a variety of civil engineering applications, such as a substitute for sand and gravel in structures, as well as a binding component in certain types of cement (generally, concrete and masonry). Furthermore, such by-products have become a subject of increasing interest in environmental engineering as a low-cost and effective adsorbent for the removal of organic pollutants and heavy metals from wastewaters.</p><p>In order to minimize the impact of material cost, novel solutions for the development of a high capacity and long-term adsorbent have provided a high performance adsorbent for practical applications. This study is focused on the use of modified fly ash (MFA) activated by lime (Ca(OH)<sub>2</sub>) as an effective and low-cost adsorbent for the removal of As(V) ions. The adsorption capacity of the MFA adsorbent was found to be 35.40 mg g<sup>-1</sup>, while the kinetic and thermodynamic parameters indicated a spontaneous and endothermic process. Due to the low desorption potential of the exhausted adsorbent (MFA/As(V), their effective further material reuse was established to be feasible. The reuse of the exhausted adsorbent was obtained through pozzolanic MFA particles and Ca(OH)<sub>2, </sub>thereby formulating a construction material of a cementitious calcium-silicate hydrate. The toxicity leaching test (TCLP) and mechanical properties of the new construction material containing exhausted MFA (CM-MFA/As(V)) confirm its safe use in the laboratory as well as its semi-industrial application.</p><p>The specific objectives of this study have been: (i) to improve the adsorption performance of the MFA; (ii) to evaluate the material’s equilibrium, as well as the process’ kinetic and thermodynamic aspects, including  estimating its limiting step; and (iii) to investigate the possible reuse of the exhausted adsorbent in the production of construction materials. The kinetic data were successfully fitted by a pseudo-second-order equation and the Weber-Morris model. The metal-desorption experiments performed on the exhausted FA and MFA indicate a low recovery of the selected pollutants.</p><p>The major outcome of this study, indicates that double-valorization of fly ash opens new directions for waste management toward reuse in effective practical applications; i.e., for actual water –purification systems, as well as in the production of construction material.</p>

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