scholarly journals Feasibility Of Making Concrete Using Lignite Coal Bottom Ash As Fine Aggregate

2015 ◽  
Vol 61 (3) ◽  
pp. 19-30 ◽  
Author(s):  
T. S. Thandavamoorthy
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Bottom Ash ◽  
Fine Aggregate ◽  
Sulphate Attack ◽  
Normal Concrete ◽  
River Sand ◽  
Natural Sources ◽  
Coal Bottom Ash ◽  
Lignite Coal

AbstractConcrete is generally produced using materials such as crushed stone and river sand to the extent of about 80-90% combined with cement and water. These materials are quarried from natural sources. Their depletion will cause strain on the environment. To prevent this, bottom ash produced at thermal power plants by burning of coal has been utilized in this investigation into making concrete. The experimental investigation presents the development of concrete containing lignite coal bottom ash as fine aggregate in various percentages of 25, 50, and 100. Compressive, split tensile, and flexural strength as part of mechanical properties; acid, sulphate attack, and sustainability under elevated temperature as part of durability properties, were determined. These properties were compared with that of normal concrete. It was concluded from this investigation that bottom ash to an extent of 25% can be substituted in place of river sand in the production of concrete.

scholarly journals Penggunaan Abu Dasar Batubara Sebagai Pengganti Sebagian Agregat Halus pada Campuran Latasir B Terhadap Karakteristik Marshall

2015 ◽  
Vol 12 (2) ◽  
Author(s):  
Roza Gusman
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Bottom Ash ◽  
Coal Ash ◽  
Asphalt Mixtures ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Coal Bottom Ash ◽  
Alternative Material ◽  
Total Proportion

Penggunaan Abu Dasar Batubara Sebagai Pengganti Sebagian Agregat Halus pada Campuran Latasir B Terhadap Karakteristik MarshallBasic Use of Coal Ash to Replace Some Fine Aggregate on Characteristics of Mixed Latasir B MarshallRoza Gusman1 & Alik Ansyori21,2Jurusan Teknik Sipil Fakultas Teknik – Universitas Muhammadiyah MalangAlamat korespondensi : Jalan Raya Tlogomas 246 Malang 65144AbstractCoal bottom ash is the residue from the burning of coal in thermal power plants. The use of coal bottom ash as an alternative material mix pavement is one way to take advantage of these residues. This study aimed to determine the effect of the use and the quantity of coal bottom ash as partial replacement of fine aggregate characteristics that meet the requirements for mixed marshall latasir B. Partial replacement of fine aggregate with coal bottom ash is made with a variation of 5%, 10%, 15%, 20%, 25%, 30%, and 35% of the total proportion of fine aggregate. Results of the study note that the use of coal bottom ash generally improves the quality mix latasir B. Latasir mixture B which has the characteristics of the best marshal is on the basis of coal ash content of 17.2%.Keywords: latasir B asphalt mixtures, coal bottom ash, marshall characteristics. AbstrakBottom ash batubara adalah residu dari pembakaran batubara di pembangkit listrik termal . Penggunaan batubara bawah abu sebagai alternatif campuran bahan perkerasan adalah salah satu cara untuk mengambil keuntungan dari residu tersebut . Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan dan kuantitas bawah abu batubara sebagai pengganti parsial karakteristik agregat halus yang memenuhi persyaratan untuk campuran marshall latasir B. pengganti parsial agregat halus dengan bottom ash batubara dibuat dengan variasi 5 % , 10 % , 15 % , 20 % , 25 % , 30 % , dan 35 % dari total proporsi agregat halus . Hasil penelitian mencatat bahwa penggunaan bottom ash batubara umumnya meningkatkan kualitas campuran latasir B. Latasir campuran B yang memiliki karakteristik marshal terbaik adalah berdasarkan kadar abu batubara dari 17,2 % .Kata kunci : campuran aspal B latasir , bawah batubara abu , karakteristik marshall .

scholarly journals AN EXPERIMENTAL STUDY ON EFFECTIVE UTILIZATION OF BOTTOM ASH (ENNORE) AS FINE AGGREGATE IN CONCRETE UNDER FLEXURE

2017 ◽  
Vol 5 (6) ◽  
pp. 152-158
Author(s):  
Kai Kannan ◽  
R Vijaya Kumar
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Bottom Ash ◽  
Project Work ◽  
Fine Aggregate ◽  
Thermal Power Plants ◽  
Split Tensile Strength ◽  
Effective Utilization ◽  
Compressive Strength Of Concrete ◽  
Day By Day

Since  the  construction  industry  is  developing  very  fast  the  requirement  of  concrete  and  their constituent  materials are also increasing day by day. Hence the need becomes in evitable to find various alternate means for the aggregate and accordingly the researchers are going on in this way. But the availability of fine aggregate becomes difficult day by day.  Hence the need arises to find alternative for the fine aggregate. The material which is known as bottom ash is available ash waste by-product material from the thermal power plants.  In  India  most  of  the  thermal  power plants  use  wet  system  for disposal of ash. Bottom ash will be generated as a residue after burning pulverised coal at boiler cyclone and collected from bottom ash hopper located under boiler structure. In this project work the material bottom ash is experimentally analysed and studied for its suitability as replacement as fine aggregate up to (0% to 50%). So far few researchers analysed its suitability as FA by finding the compressive strength of concrete. But  in  this  project  work the  split  tensile  strength  of  concrete  and  flexural  strength  of concrete were analysed by replacing bottom ash as fine aggregate.

Application of Coal Bottom Ash Zeolite on Lignin and Methylene Blue Adsorption

2019 ◽  
Vol 948 ◽  
pp. 26-32
Author(s):  
Galuh Yuliani ◽  
Siska Mutiara ◽  
Agus Setiabudi
Keyword(s):  
Methylene Blue ◽  
Fly Ash ◽  
Power Plants ◽  
Thermal Power ◽  
Bottom Ash ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Methylene Blue Adsorption ◽  
X Ray ◽  
Coal Bottom Ash

The amount of coal combustion byproducts, such as fly ash and bottom ash, generated by coal-based thermal power plants has been increasing at an alarming rate, hence creating huge problems on their treatments and disposals. One of the promising approaches for proper utilization of these byproducts is the conversion of fly ash and bottom ash to zeolites. In this research, zeolites wereprepared from coal bottom ash (RBA) by relatively simple and cheap conversion process using NaOH at 90°C for 24h. Prior to this, the RBA was pretreated using H2SO4 for 4h. The resulted zeolite was characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). XRD results confirmed the formation of sodium aluminosilicate hydrate predominated upon the bottom ash and NaOH 5M ratio of 1:8. XRF results also indicated the domination of Al2O3 and SiO2 in the zeolite composition. FTIR spectra showed characteristic zeolite peaks at 900-1100, 400-500 and 550-660 cm–1forSi-O, Al-O, and Si-O-Al absorptions, respectively. The synthetic zeolite was then applied as an adsorbent for lignin and methylene blue in aqueous solutions. It was found that the Qmax for lignin and methylene blue was16.13 mg/g and 34.13 mg/g, respectively. When fitted using Langmuir and Freundlich isotherm models, the methylene blue adsorption data fitted Langmuir isotherm while those of lignin fitted Freundlich isotherm. It was concluded that the chemical interaction between zeolite and methylene blue may lead to the chemisorption mechanism to prevail.

scholarly journals Behavior of RC Beam under Monotonic and Cyclic Loading using Waste Materials as Fine Aggregate

2019 ◽  
Vol 8 (6) ◽  
pp. 2021-2027
Keyword(s):  
Thermal Power ◽  
Bottom Ash ◽  
Reinforced Concrete Beam ◽  
Absorption Capacity ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Rc Beam ◽  
River Sand ◽  
Manufactured Sand ◽  
Granite Powder

Crusher sand or Manufactured sand (M-Sand) obtained from stone aggregate quarries is widely used as fine aggregate in concrete to avoid the depletion of natural river sand. To avoid air and land pollution due to direct dumping of wastes in open land area from granite processing industries and thermal power stations, the behavior of reinforced concrete beam without waste (RC beam) and with waste (RCW beam) materials like granite powder (10%) and bottom ash (10%) as combined partial replacement for M-Sand was carried out. The parameters like load carrying capacity, ductility, energy absorption capacity and stiffness degradation were evaluated. The behavior of all the parameters of both the beams was similar and there was slight decrease (10%) in strength parameters due to increase in fine pore particles. Hence, the granite powder and bottom ash can be used as partial replacement for fine aggregate in building constructions

scholarly journals Investigative Analysis on The Properties of Concrete Replacing Fine Aggregate with Bottom ASH and Quarry Dust

2019 ◽  
pp. 22-44
Author(s):  
D. R. Sasirekha ◽  
S. Thejaswini
Keyword(s):  
Fly Ash ◽  
Bottom Ash ◽  
Coal Ash ◽  
Present Condition ◽  
Sustainable Construction ◽  
Fine Aggregate ◽  
River Sand ◽  
Conventional Concrete ◽  
Coal Bottom Ash ◽  
Quarry Dust

In present condition to full-fill the demand of sustainable construction, concrete made with different materials is the best choice for the construction industry. Generally, we use materials which are required for conventional concrete and addition to those we replace the low-cost materials such as bottom ash in this project we replace the coal bottom ash & quarry dust to the fine aggregate by variable percentages. Coal bottom ash is the by-product of coal combustion. The rock detritus filled in the fishers of coal become separator from the coal during pulverization. In the furnace, carbon, other combustible matter burns, & the non-combustible matter result in coal ash. The coal ash collector from the electro static precipitators is called fly ash. coal bottom ash constitutes about 20% of coal ash and the result is fly ash. The perfect substitute for reverse sand is quarry dust it is the one of the ingredients in manufacture of concrete the crusher dust is known as quarry dust can be used as alternative material to the river sand. quarry dust possesses similar properties as that of river sand, hence accepted as a building material. The aggregate replaced with concrete in various percentages as both BA and QD (10%,20%&30%). All replacements where done to the m30 grade of concrete. the concrete has been replaced by coal bottom ash accordingly to the percentage, and fine aggregate has been replaced by quarry dust in percentage. concrete mixtures where produced, tested & compared in terms of compressive strength, tensile, flexural strength are evaluated. The curing of cubes, cylinders, & beams is 7days 28days & 90days.

scholarly journals The Effect on Strength of Concrete by Partial Replacement of Cement and Fine Aggregate with Flyash, Granite Powder and Plastic Fibres

2019 ◽  
Vol 8 (4) ◽  
pp. 3516-3519
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Power Plants ◽  
Thermal Power ◽  
Raw Material ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Normal Concrete ◽  
Split Tensile Strength ◽  
Granite Powder

The rapid growth of the population leads to a requirement of infrastructure this leads to scarcity of raw material for construction such as cement and sand. The other hand pollution growing due to thermal power plants, granite polishing unit and plastic waste this need to be removed. This gives an idea of using this compound as a raw material in concrete making. This concept found to effective minimizes disposal of fly, granite power and plastic wastes, and leads towards Green Building Concepts. In this investigation of M25 grade normal concrete is made by cement, sand, and aggregate which is tested and compared by special concrete. The concrete mix is prepared as per 10262 -2019 by adding replacing small amount of Fly ash in place of cement OPC 53 grade, and fine aggregate is prepared by partial replacing with granite powder (0%,10%,20%,30%)and another mix is prepared by adding 0.5 nylon fiber, partial replacement of fine aggregate with granite powder (0%,10%,20%,30%)specimens are casted . The casted specimens are tested for split tensile strength and compressive strength 7, 14 and 28 day’s respectively and these results also compared with each other. I t is observed that compressive strength and split tensile of concrete at 28days of curing show max value when compared with normal concrete. When the percentage of granite powder increases to 30% it shows that a decrease in both split tensile strength of concrete and compressive strength. When we added fiber to the concrete there is an increase in compressive strength and split tensile strength but there is a not much increase in compressive strength but increase in split tensile strength

scholarly journals Influence of Bottom Ash Replacements as Fine Aggregate on the Property of Cellular Concrete with Various Foam Contents

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Patchara Onprom ◽  
Krit Chaimoon ◽  
Raungrut Cheerarot
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Nonlinear Regression ◽  
Power Plants ◽  
Bottom Ash ◽  
Fine Aggregate ◽  
River Sand ◽  
Nonlinear Regression Models ◽  
High Degree ◽  
Cellular Concrete

This research focuses on evaluating the feasibility of utilizing bottom ash from coal burning power plants as a fine aggregate in cellular concrete with various foam contents. Flows of all mixtures were controlled within 45 ± 5% and used foam content at 30%, 40%, 50%, 60%, and 70% by volume of mixture. Bottom ash from Mae Moh power plant in Thailand was used to replace river sand at the rates of 0%, 25%, 50%, 75%, and 100% by volume of sand. Compressive strength, water absorption, and density of cellular concretes were determined at the ages of 7, 14, and 28 days. Nonlinear regression technique was developed to construct the mathematical models for predicting the compressive strength, water absorption, and density of cellular concrete. The results revealed that the density of cellular concrete decreased while the water absorption increased with an increase in replacement level of bottom ash. From the experimental results, it can be concluded that bottom ash can be used as fine aggregate in the cellular concrete. In addition, the nonlinear regression models give very high degree of accuracy (R2>0.99).

Identification of waste management strategies and waste generation factors for thermal power plant sector wastes in Turkey

2018 ◽  
Vol 37 (3) ◽  
pp. 210-218
Author(s):  
Cansu Demir ◽  
Ülkü Yetiş ◽  
Kahraman Ünlü
Keyword(s):  
Waste Management ◽  
Power Plants ◽  
Production Systems ◽  
Thermal Power ◽  
Management Strategies ◽  
Bottom Ash ◽  
Thermal Power Plants ◽  
Waste Generation ◽  
Turkish Republic ◽  
Process Modification

Thermal power plants are of great environmental importance in terms of the huge amounts of wastes that they produce. Although there are process-wise differences among these energy production systems, they all depend on the logic of burning out a fuel and obtaining thermal energy to rotate the turbines. Depending on the process modification and the type of fuel burned, the wastes produced in each step of the overall process may change. In this study, the most expected process and non-process wastes stemming from different power generation processes have been identified and given their European Waste Codes. Giving priority to the waste minimization options for the most problematic wastes from thermal power plants, waste management strategies have been defined. In addition, by using the data collected from site visits, from the literature and provided by the Turkish Republic Ministry of Environment and Urbanization, waste generation factor ranges expressed in terms of kilogram of waste per energy produced annually (kg/MWh) have been estimated. As a result, the highest generation was found to be in fly ash (24–63 for imported coal, 200–270 for native coal), bottom ash (1.3–6 for imported coal, 42–87 for native coal) and the desulfurization wastes (7.3–32) produced in coal combustion power plants. The estimated waste generation factors carry an important role in that they aid the authorities to monitor the production wastes declared by the industries.

scholarly journals Utilizing Coal Bottom Ash from Thermal Power Plants in Vietnam as Partial Replacement of Aggregates in Concrete Pavement

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Nu Nguyen Thi ◽  
Thinh Phi Hong ◽  
Son Bui Truong
Keyword(s):  
Power Plants ◽  
Cement Content ◽  
Thermal Power ◽  
Bottom Ash ◽  
Concrete Pavement ◽  
Partial Replacement ◽  
Technical Requirement ◽  
Thermal Power Plants ◽  
Rural Roads ◽  
Flexural Tensile Strength

In Vietnam, a large amount of coal bottom ash (CBA) is being discharged from thermal power plants and has been making serious environmental pollution. It is essential to utilize the CBA to reduce environmental pollution. So, this paper presents a series of experimental studies in the laboratory using CBA as a partial replacement of aggregates in concrete pavement for rural roads. In mixing concrete, the CBA is utilized to replace 15, 30, and 100% aggregates. The design of the composition must achieve the technical requirement of M-30 grade of concrete. A total 351 of specimens were tested on workability of fresh concrete, abrasion, compressive strength, and flexural tensile strength in order to achieve the technical requirement of concrete pavement for rural roads. Based on the experimental results, in order to achieve the required compressive strength, An Khanh CBA concrete uses more content of cement and water than control concrete; Cao Ngan CBA is only utilized to replace 15% aggregates, and Cao Ngan CBA concrete also uses more cement and water than control concrete. It also shown that the amount of water and cement content depend on types of CBA and the water amount and cement content of CBA concrete are larger than those of control concrete. The advantage of mixture CBA concrete is abrasion, and flexural tensile strength achieved the value as per the technical requirement.

scholarly journals Coal Bottom Ash as Partial Replacement of Fine Aggregate in Asphaltic Concrete

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
H. Mohammed
Keyword(s):  
Fixed Bed ◽  
Bottom Ash ◽  
Partial Replacement ◽  
Fine Aggregate ◽  
Asphaltic Concrete ◽  
Air Voids ◽  
Coal Bottom Ash ◽  
Asphalt Mix ◽  
Materials Used ◽  
Marshall Stability

The effect of coal bottom ash (CBA) on the characteristics of asphaltic concrete was investigated with a view to assess its suitability as a partial replacement of fine aggregate. Coal procured from Lafia-Obi coal mines was burnt in a fixed bed combustor until a sand size residual was produced. The properties of the materials used for the study were characterize using standard procedures. The CBA was introduced in the asphalt mix at an increasing rate of 10, 15, 20 and 25% content by weight of the fine aggregate and test samples of asphaltic concrete were prepared. The samples were subjected to Marshall stability test. Results showed that the specific gravity and absorption test for granite dust were 2.45 and 0.25%, respectively, while those of the CBA were 2.86 and 0.58% respectively. The result of stability, flow, bulk density, voids filled in bitumen (VFB), air voids (VA) and voids in mineral aggregate (VMA) of the asphaltic concrete at 0% CBA were 12.02 kN, 3.04 mm, 2.491g/cm3, 66.0%, 4.3%, 12.7% respectively; while the values at 20% CBA content were 16.97 kN, 3.51mm, 2.514g/ cm3 , 71.2%, 3.4%, 11.9% respectively. The result showed that coal bottom ash in asphaltic mix improved its properties.

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