Improvement of engineering properties of pond ash based CLSM with cementless binder and artificial aggregates made of bauxite residue

Consequent upon increased generation of electricity through thermal route involving combustion of pulverized coal/ignite, concurrent generation of fly ash/pond ash in bulk quantities is a matter of serious concern not only because of issues associated with its disposal and utilization, but also because of its threat to public health and ecology. Though a lot of research has been carried out for the effective utilization of flyash like its use in construction industry etc, little literature is available on pond ash utilization particularly its use as a constituent material for concrete in construction industry. Hence pond ash - a waste material, if supplements shortage of fine aggregate (river sand) in mortar and concrete, reduces the demand for disposal of thermal power plant waste, reduces its environmental impact with proper utilization of huge quantity of waste in construction industry. Researches are being carried out worldwide which shows the suitability of Pond Ash as FA. This paper summerises various characteristics of Pond Ash as fine aggregate in concrete with its engineering properties such as its shape, gradation, texture, physical, chemical and also morphological aspects when used in concrete

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SUITABILITY OF RED MUD IN SUBGRADE USING RBI GRADE 81

Proceedings of International Structural Engineering and Construction ◽

10.14455/isec.res.2017.218 ◽

2017 ◽

Vol 4 (1) ◽

Author(s):

Kamal Singh ◽

Hari Lal Tiwari

Keyword(s):

Red Mud ◽

Aluminum Industry ◽

Bauxite Residue ◽

Liquid Limit ◽

Engineering Properties ◽

Optimum Dose ◽

Plastic Limit ◽

Rbi Grade 81

The waste generated by aluminum industry is known as bauxite residue or red mud. By nature, the red mud is toxic which creates problem for disposal. Due to the alkaline nature it is unsuitable for construction and vegetation. Every year more or less 75 million tons of red mud is generated worldwide. RBI grade 81 is a powdered cementitious stabilizer. It improves the engineering properties of several types of soils. This paper presents investigation carried out for better understanding on effect of RBI Grade 81 on red mud properties to be used in subgrades. It is found that with optimum dose of RBI grade 81 as 4%, liquid limit decreases and plastic limit increase. MDD values decrease slightly but the CBR value of the red mud increase with addition of RBI grade 81.

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Effect of pond ash and steel fibre on engineering properties of concrete

Ain Shams Engineering Journal ◽

10.1016/j.asej.2015.03.009 ◽

2016 ◽

Vol 7 (1) ◽

pp. 89-99 ◽

Cited By ~ 9

Author(s):

B.R. Phanikumar ◽

A. Sofi

Keyword(s):

Steel Fibre ◽

Engineering Properties ◽

Pond Ash

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Engineering properties of cement mortar with pond ash in South Korea as construction materials: from waste to concrete

Open Engineering ◽

10.2478/s13531-012-0068-3 ◽

2013 ◽

Vol 3 (3) ◽

Cited By ~ 7

Author(s):

Sang Jung ◽

Seung-Jun Kwon

Keyword(s):

South Korea ◽

Cement Mortar ◽

Setting Time ◽

Bottom Ash ◽

Construction Materials ◽

Engineering Properties ◽

Strength Development ◽

Concrete Aggregate ◽

Freezing And Thawing ◽

Pond Ash

AbstractAmong the wastes from coal combustion product, only fly ash is widely used for mineral mixture in concrete for its various advantages. However the other wastes including bottom ash, so called PA (pond ash) are limitedly reused for reclamation. In this paper, the engineering properties of domestic pond ash which has been used for reclamation are experimentally studied. For this, two reclamation sites (DH and TA) in South Korea are selected, and two domestic PAs are obtained. Cement mortar with two different w/c (water to cement) ratios and 3 different replacement ratios (0%, 30%, and 60%) of sand are prepared for the tests. For workability and physical properties of PA cement mortar, several tests like flow, setting time, and compressive strength are evaluated. Several durability tests including porosity measuring, freezing and thawing, chloride migration, and accelerated carbonation are also performed. Through the tests, PA (especially from DH area) in surface saturated condition is evaluated to have internal curing action which leads to reasonable strength development and durability performances. The results show a potential applicability of PA to concrete aggregate, which can reduce consuming natural resources and lead to active reutilization of coal product waste.

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Engineering properties of hydrated lime – pond ash treated peat soil

10.1063/5.0073240 ◽

2021 ◽

Author(s):

Zeety Md. Yusof ◽

Nor Hazwani Md Zain

Keyword(s):

Peat Soil ◽

Hydrated Lime ◽

Engineering Properties ◽

Pond Ash

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Characterization of pond ash-bentonite mixes as landfill liner material

Waste Management & Research ◽

10.1177/0734242x20918013 ◽

2020 ◽

Vol 38 (12) ◽

pp. 1420-1428

Author(s):

Suryaleen Rout ◽

Suresh Prasad Singh

Keyword(s):

Hydraulic Conductivity ◽

Void Ratio ◽

Liquid Limit ◽

Engineering Properties ◽

Basic Material ◽

Shape Parameters ◽

Liner Material ◽

Pond Ash ◽

Landfill Liner

Characterization of pond ash-bentonite mixes is made to assess their suitability as liner material for waste disposal facilities by examining the relevant index and engineering properties. Further, a comparative assessment is made between sand-bentonite and pond ash-bentonite mixes for the range of bentonite content varying from 0 to 30% by weight at an interval of 5% to ensure an effective substitution of sand with pond ash. Addition of bentonite to sand or pond ash significantly influences the plasticity, strength and permeability properties. Besides, the shape parameters of the coarser fraction and morphology of compacted mixes also influence the engineering properties. A multiple linear regression equation is suggested to predict the hydraulic conductivity of these mixes by considering the basic material properties such as liquid limit, plasticity index and void ratio as an input variable with a correlation coefficient of 0.92 between the measured and predicted hydraulic conductivity values. At comparable conditions, compacted pond ash-bentonite mixes exhibit higher strength but also higher permeability than sand-bentonite mixes. Pond ash-bentonite and sand-bentonite mixes met the liner requirements when compacted with modified Proctor compaction effort at a minimum bentonite content of 20% and 15%, respectively.

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A Review on Utilization of Fly- Ash and Pond-Ash as a Partial Replacement of Cement in Concrete Mix Design

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/ijsrset196270 ◽

2018 ◽

pp. 413-418

Author(s):

Harshkumar Patel ◽

Yogesh Patel

Keyword(s):

Fly Ash ◽

Electricity Generation ◽

Power Plants ◽

Renewable Energy Sources ◽

Thermal Power ◽

Strength Test ◽

Partial Replacement ◽

Pond Ash ◽

Research Activities ◽

Ash Disposal

Now-a-days energy planners are aiming to increase the use of renewable energy sources and nuclear to meet the electricity generation. But till now coal-based power plants are the major source of electricity generation. Disadvantages of coal-based thermal power plants is disposal problem of fly ash and pond ash. It was earlier considered as a total waste and environmental hazard thus its use was limited, but now its useful properties have been known as raw material for various application in construction field. Fly ash from the thermal plants is available in large quantities in fine and coarse form. Fine fly ash is used in construction industry in some amount and coarse fly ash is subsequently disposed over land in slurry forms. In India around 180 MT fly is produced and only around 45% of that is being utilized in different sectors. Balance fly ash is being disposed over land. It needs one acre of land for ash disposal to produce 1MW electricity from coal. Fly ash and pond ash utilization helps to reduce the consumption of natural resources. The fly ash became available in coal based thermal power station in the year 1930 in USA. For its gainful utilization, scientist started research activities and in the year 1937, R.E. Davis and his associates at university of California published research details on use of fly ash in cement concrete. This research had laid foundation for its specification, testing & usages. This study reports the potential use of pond-ash and fly-ash as cement in concrete mixes. In this present study of concrete produced using fly ash, pond ash and OPC 53 grade will be carried. An attempt will be made to investigate characteristics of OPC concrete with combined fly ash and pond ash mixed concrete for Compressive Strength test, Split Tensile Strength test, Flexural Strength test and Durability tests. This paper deals with the review of literature for fly-ash and pond-ash as partial replacement of cement in concrete.

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