The Non-Carbon Kaolinite; Part Substituent of Cement in Concrete

Harichandan, Barun; Mishra, Siba Prasad; Kumar, Deepak; Sahu, Deepak Kumar; Mishra, Saswat

doi:10.9734/cjast/2022/v41i131643

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…The mining (coal, stone, or Karstic) causes UG voids (man-made or natural), relatively adjacent to the earth's crust surface. The areas in Raniganj, Jharna, Bailadila, Talcher, Sukinda mines, and Rajgamar coal mines of Korba [44,45].…”

Section: Subsidence In Mining Areas: Mining Activity Inmentioning

confidence: 99%

The Geohazard as Land Subsidence in Anthropocene, India

Mishra

2023

JGEESI

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Land subsidence events, natural or anthropogenic, will be future national challenges for India. The positioning of the Indian plate in the globe, and human activities on the frustum compel land subsidence everywhere, on mountains, in deltas, riverbeds and in settlements. Many mega deltas of the globe including India are sinking, shrinking, and subsiding which shall invite catastrophes. The present search uses the available datasets in print media, books, information technology and electronic media. The survey responses sourced from websites were physically ground verified, etc. Considering Bhuban data, Arc GIS software and Microsoft Excel, India's hazard, organic and inorganic maps are prepared to alert our forthcoming ancestors. Using those maps the zonal map of geo-hazards in various states of India can be prepared and future action plans can be shorted out. Studies reveal that geo-hazards in various zones of India are different. Hazards on mountains are land slide, torrential rain, and land subsidence, whereas the calamities along the coasts, and deltas are cyclones, coastal erosions, floods, and deltaic subsidence. With surging human activities, the frequency and intensity of geo-hazards are swelling presently. It is high time to plan to appease the vulnerability of the rising devastation to attain sustainability of SDG Targets 11.5, and 13 which will moderate the adverse effects of such disasters.

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Section: Subsidence In Mining Areas: Mining Activity Inmentioning

confidence: 99%

The Geohazard as Land Subsidence in Anthropocene, India

Mishra

2023

JGEESI

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“…The reuse and valorization of the ferrochrome or chrome tailings have proved to replace about 50% of fine aggregates in cement concrete, in making bricks, filling pits, and also in road construction like ground granulated blast furnace slags, (GGBS) and red mud [3,14,15,16].…”

Section: Review Of Literaturementioning

confidence: 99%

The Strategies of Chromite Terrace in Sukinda Valley, India: An Appraisal

Mishra

Samal²,

Sohel³

et al. 2022

JSRR

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Iron chrome oxide (FeCr 2O4), is a commercially viable and major ingredient of stainless steel. The Odisha state in India possesses 98% of the pre-Cambrian India’s Chromite ore deposits in Sukinda valley, Jajpur District. To meet the present escalating demand for chromium in steel industries, it is urged to extract more chrome ore to satiate domestic needs. The depletion of chrome deposits, rise in demand, fewer chrome mines, and less conversion from tailings increase of more toxic hexavalent chrome ion level in the geo-bio hydrosphere, shall aggravate health concerns for the people, fauna, and flora in Sukinda Ultramafic Complex (SUC). The present quest is a collection of chromite ores and tailings. A chemical study is done by using the X-ray fluorescent spectrometer. An insitu/GIS study of the Sukinda ultramafic complex by using Arc-GIS, and ERADAS software has been done to originate hydrology, aspect, and hill-shade map of the valley. The literature, and as an inhabitant of the area helped in preparing the strategic plan through Environmental Impact Assessment and Environmental Management Plan. CR (III) is a dietary requirement. The anthropogenic activities and atmospheric exposure have converted Cr (III) to Cr (VI) in SUC and have surpassed the recommended values. The noxious Cr (VI) in the geo-bio-hydrosphere shall invite health and environmental concerns in the future. The aboriginals of SUC are economically burdened with food insecurity, poor livelihood, health, and of formal societal values. The Sukinda Valley ore samples contain 50% chromite ore is economic. But the >7% of CR (III) ore in the tailings and overburden shall warrant the future expected exorbitant Cr (VI) in the geo-bio-hydro environment of Sukinda valley.

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Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete

Fode,

Jande,

Kivevele

2024

Advances in Civil Engineering

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Construction industries are rapidly growing, sacking high amounts of concrete which has a highly dense microstructure with excellent mechanical properties, more durable, and highly eco-friendly materials. Hence, many of the researchers are interested in solving this problem with replacing concrete by natural pozzolana (NP) which is a supplementary cementitious material mostly from volcanic sources having much active silica content that can improve the durability and mechanical properties of concrete. However, it is not well-known which common optimum replacement range can give the most desirable concrete properties. So, the present study sought to review the effects of replacing NP from volcanic sources on the durability, physical, mechanical, and microstructural properties of concrete, also, to identify the most common dose of a positive effect as a replacement in concrete. The review shows that many of NP used by different literature from different places satisfy ASTM replacement standard in concrete, especially, based on its chemical compositions. Also, the review observed that employing NP in concrete significantly improves concrete workability, lengthens setting time, and reduces bulk density, porosity, water absorption, and chloride ion migration by making denser concrete microstructure. In general, adding 5%–20% of NP in concrete significantly improves compressive strength, split tensile strength, and flexural strength. Specifically, most of the studies found 15% replacement of NP having volcanic sources can give optimum strength. Besides these, most of the studies indicated that the improvement of the strength was more visible at the concrete age of 7–28 days.

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The Non-Carbon Kaolinite; Part Substituent of Cement in Concrete

Cited by 3 publications

References 10 publications

The Geohazard as Land Subsidence in Anthropocene, India

The Geohazard as Land Subsidence in Anthropocene, India

The Strategies of Chromite Terrace in Sukinda Valley, India: An Appraisal

Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete

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