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Journal Article
Journal: Geoenergy
Published: 08 October 2024
Geoenergy (2024) 2 (1): geoenergy2024-004.
...A. Kozlowski; T. Peshkur; J. C. Renshaw; K. J. Dobson; F. Taylor Pulverized fly ash (PFA) is commonly used as a supplementary cementitious material (SCM) in cement and is permitted for use in cements and grouts used for the encapsulation of low-level nuclear waste. However, with a global decrease...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 13 September 2024
Lithosphere (2024) 2024 (3): lithosphere_2023_160.
... during the mining process. A plane-strain model was constructed for this experiment based on coal seam conditions. The geometric similarity ratio of the model was 1:120, from which the other similarity constants were derived. The similar materials selected for the model were sand and coal ash...
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Journal Article
Published: 01 September 2024
Jour. Geol. Soc. India (2024) 100 (9): 1338–1346.
...Mingqing Huang; Qiwei Zheng; Qingling Liu; Zhong Gao ABSTRACT Waste rocks and tailings are widely applied materials in underground metal mines to backfill mined-out areas. To test the effect of low calcium fly ash on slurry fluidity and long-term strength of cemented paste backfill, orthogonal...
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Journal Article
Published: 10 November 2023
Quarterly Journal of Engineering Geology and Hydrogeology (2024) 57 (1): qjegh2023-057.
...Kang Zhao; Qizheng Huang; Jun Wu; Yajing Yan; Jian Yang; Fujin Ning; Xiangqing Tian; Lang Liu; Yongbo Ji Abstract To reduce the economic cost of backfilling a mine, layers of cemented materials with different ash sand ratios are often used to backfill the void. In this study, we explored the damage...
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Journal Article
Published: 01 August 2023
Jour. Geol. Soc. India (2023) 99 (8): 1121–1130.
...Sathiyamoorthy G.; Vasudevan S.; Balamurugan P.; Selvaganapathi R. Abstract Research on finding the trace element in the fly ash material becomes imposing due to environmental effect. Coal fly ash formed from the burning of coal by thermal power plants are huge and it has been a big problem in its...
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Series: Geological Society, London, Special Publications
Published: 10 May 2023
DOI: 10.1144/SP532-2022-267
EISBN: 9781786209641
.... Laurentia Orthograptus ruedemanni Dolgeville F1301_2.8 Recollected Manheim ash North Creek, New York 451.62 inherited 0.11/0.24/0.53 1.1 0.37 7/7 Macdonald et al. 2017 App. Laurentia Orthograptus ruedemanni Dolgeville Manheim ash North Creek, New York 451.26 0.11/0.25/0.53 2.0...
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Series: Geological Society, London, Special Publications
Published: 13 April 2023
DOI: 10.1144/SP520-2021-201
EISBN: 9781786209535
... with water from a crater lake or from the syn-eruptive interaction of hot material with snow/ice cap), or lahars generated by rainfall-driven ash mobilization either while an eruption is ongoing or by rainfall remobilizing tephra deposits several years after an eruption. Fig. 2. ( a ) Primary...
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Journal Article
Published: 01 April 2023
Jour. Geol. Soc. India (2023) 99 (4): 487–494.
...Sujesh Sahay; Jayanta Kumar Pati; Anuj Kumar Singh; Ambalika Niyogi; Munmun Chakarvorty; Kuldeep Prakash; Mrigank Mauli Dwivedi Abstract The eruptions from Kelud (Kelut) volcano, Indonesia on 13 to 14 February, 2014 ejected huge amount of volcanic ash to an altitude of more than 26 km and spread...
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Journal Article
Published: 01 January 2023
Jour. Geol. Soc. India (2023) 99 (1): 37–46.
... of overburdens and fly ash in huge quantities. These became severe threat to the environment during backfilling via leaching of contaminants and forming acid mine drainages. To understand the chemical characteristics of overburden, seven locations from the Ib valley coalfield were sampled. Also, a fly ash sample...
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Journal Article
Journal: Geosphere
Published: 04 November 2022
Geosphere (2022) 18 (6): 1926–1957.
.... Pyroclastic deposits occur in four main facies: (1) lapilli- and blockdominated beds, (2) thinly bedded lapilli tuff, (3) laminated and cross-laminated ash, and (4) massive lapilli ash/tuff. Lapilli- and block-dominated beds are found mostly within several hundred meters of the crater and transition outward...
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Journal Article
Journal: GSA Bulletin
Published: 21 October 2022
GSA Bulletin (2023) 135 (7-8): 1635–1651.
... study was conducted at two areas near legacy UNEs: one near Barnwell and one near Disko Elm ( Fig. 1 ). Both sites lie within the Miocene Southwest Nevada Volcanic Field, which includes silicic ash-flow tuffs, bedded tuffs, and rhyolitic lava from the Calico Hills Formation (from the Silent Canyon...
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Journal Article
Published: 01 April 2022
Jour. Geol. Soc. India (2022) 98 (4): 460–466.
... some strategic REEs to fulfil its demand. It’s high time to explore alternative sources to meet its demand and coal ash from Thermal Power Stations (TPS) can be a very good alternative resource. In the present study, coal and coal fly ash (CFA) from seven Indian TPSs have been evaluated for estimation...
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Journal Article
Published: 01 April 2022
Jour. Geol. Soc. India (2022) 98 (4): 505–515.
... values and depict the dominance of vitrite microlithotype indicating coal formation under fluvial control. They are bituminous in rank having low moisture and relatively high ash content along with moderately high sulphur, depicting marine influence in a near shore depositional environment. The organic...
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Journal Article
Published: 01 March 2022
Jour. Geol. Soc. India (2022) 98 (3): 387–394.
... beginning and the problems have been exaggerated with the increasing density of the population ( Dasgupta and Dutta 2005 , Bhattacharya et al. 1997 ). This area has been affected intensely due to prolonged (more than 245 years) excavation. Coal mines are the source of fly ash, coal dust, suspended...
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Journal Article
Journal: GSA Bulletin
Published: 02 February 2022
GSA Bulletin (2022) 134 (9-10): 2267–2279.
... of persistent wetness in the Mono Basin, which is a hydrologically closed depression that sits at the west-central edge of the Basin and Range. The most recent emergence of persistent wetness in the Mono Basin is stratigraphically correlated with the depositional age of Ash 19—a rhyolitic ash bed...
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Journal Article
Published: 01 November 2021
Jour. Geol. Soc. India (2021) 97 (11): 1468.
... places. Barakar Formation. Exposed in northeast of Chandra village contains coal seam of around 1.50 m thick is exposed in a nala section. Analysis results show that coal present in the area contains high volatile matters (21.65% to 31.10 %) and high ash yield which varies from 12.12 % to 51.90...
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Journal Article
Published: 22 September 2021
Environmental & Engineering Geoscience (2022) 28 (2): 215–231.
...James H. May; Wayne C. Isphording; David Patrick; David R. Williamson; James E. Lyles, Sr. ABSTRACT Calcium bentonite mined in Smith County, Mississippi, has been reported in numerous publications to be derived from the weathering of volcanic ash. These interpretations were based on the bentonite...
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Series: Geological Society, London, Memoirs
Published: 27 May 2021
DOI: 10.1144/M55-2018-49
EISBN: 9781786209863
... material was either in the form of dispersed clasts in sediments or primary deposits. At Leg 183 drill sites 1139–1140 basaltic and felsic ash occurs as disseminated shards and discrete felsic tephra layers along with variably altered basalt lavas and pillow basalts. Leg 183 (Sites 1135–42...
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Journal Article
Published: 13 March 2021
Quarterly Journal of Engineering Geology and Hydrogeology (2021) 54 (4): qjegh2020-142.
...E. Ramanjaneya Raju; B. R. Phanikumar; M. Heeralal Abstract This note presents the effect of lime, cement, fly ash and ground granulated blast furnace slag (GGBS) on free swell index (FSI), liquid limit (LL), plasticity index (PI), compaction characteristics, hydraulic conductivity ( k...
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Journal Article
Published: 01 February 2021
Italian Journal of Geosciences (2021) 140 (1): 108–120.
...Redi Muci; Klodian Skrame; Oltion Fociro; Marco Mancini; Iolanda Gaudiosi; Maurizio Simionato ABSTRACT The study analyses the effects of two chemical agents – cement and fly ash – in changing the swelling potential and the strength parameters of an expansive clay soil collected from Currila area...
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