Experimental investigation for partial replacement of fine aggregates in concrete with sandstone

Chandar, Karra Ram; Gayana, B.C.; Sainath, V.

doi:10.12989/acc.2016.4.4.243

Cited by 15 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers found that crushed stone sand may be utilized as an inexpensive and easily accessible alternative to river sand, which can help reduce the environmental damage caused by river sand extraction. Chandar et al 26) reached out after researching sandstone as a partial substitute for fine particles in concrete. The results of the sieve analysis indicated an S-curve that corresponds to a well-graded aggregate for sandstone that may be substituted for fine aggregates.…”

Section: Fig 3: Study Area Mapmentioning

confidence: 99%

Finding Alternative to River Sand in Building Construction

Singh¹,

Singh²,

Kumar³

et al. 2022

Evergreen

View full text Add to dashboard Cite

Due to the increasing expansion of infrastructure, there is a very high worldwide demand for river sand in the modern era. India's annual demand for river sand is 60 million metric tons. In metropolitan cities, the need for river sand is about 1 kilogram per person per day. The rapid extraction of river sand is producing detrimental effects on the environment. The main objective of the research is to determine the impact of rapid sand mining on river bank erosion and accretion and to find substitute materials for river sand. The River bank variations were measured for 1990-2000, 2000-2010, 2010-2020, and 1990-2020, and the corresponding erosion and accretion maps were created. These materials (copper slag, quarry dust, foundry sand, and sawdust) are used as an alternative to river sand to produce concrete mix. These alternatives substituted river sand from 10% to 60% in the mix proportion of M25 grade concrete to obtain the optimum compressive strength. These alternatives were also subjected to physical testing to determine their similarities to river sand. A Scanning Electron Microscope was used to analyze the hardened concrete's microstructure. The hardened concrete (River sand Substituted) is also analyzed to determine the changes in the internal structure of the concrete after 14 and 28 days.

show abstract

Section: Fig 3: Study Area Mapmentioning

confidence: 99%

Finding Alternative to River Sand in Building Construction

Singh¹,

Singh²,

Kumar³

et al. 2022

Evergreen

View full text Add to dashboard Cite

show abstract

“…The workability acquired for concrete for 30% replacement was found to be very 1ow. However, the modified concrete was found to be applicable for binding, shallow sections and pavement using pavers K. Ram Chandar,(2016) [4], studied gradation results marked on a semi-log plot with respect to percentage passing on (Y-axis ) and sieve size on logarithmic axis (xaxis) interpreted S-curve conforming to well-graded aggregate for sandstone. The fineness modulus of the sandstone obtained as 2.25 and found it to be substitution of fine aggregate.…”

Section: Brief Review Of the Past Workmentioning

confidence: 99%

“…The external dumps always possess treat to nearby habitants that necessitates rehabilitation of villagers to a safe place which adds to additional capital investment. 4. Overburden dumps pollutes the environment, flora fauna of species nereby area adjacent to the mine…”

Section: 12demerits Of Overburdenmentioning

confidence: 99%

Study of Mechanical properties of Sand extracted from Overburden of WCL Mines – the Effective Sustainable Sand Solution

B.V.Bahoria¹

2021

TURCOMAT

View full text Add to dashboard Cite

Ecological environment concerns are being raised against exploitation of natural resources. The lack of consensus are mostly related to preserve soil beds from erosion and the fact of having natural sand as a filter media for ground water. For a period of time, coal industry in India is facing shortage of river sand due to new mining laws and its increasing demand in infrastructure expansion. The present study concentrates on study of extraction of sand from the overburdens of opencast mines of Coal fields and its feasibility as a fine aggregate in concrete. The surcharge soil spread over in mines needs to be removed for separation of coal to an external dump till ample space is produced for back filling by obtaining of land nearby coal carrying area. Moreover surcharge waste needs to be managed at the time of closure of mine for land acquisition. In present project study of physical properties of extracted sand from overburden and natural sand from river bed is compared and effort is made to utilize the waste generated in tones into sustainable sand solution.

show abstract

“…This research finds that the lower stiffness of sandstone particles in high‐performance reinforced concrete (RC) beams led to excessive deflection under service loads. Recently, a few studies 17,18 attempted to use coal mine overburden material (CMOB) as potential replacements for natural fine aggregates. CMOB is mined during the extraction of coal from open‐pit mines.…”

Section: Introductionmentioning

confidence: 99%

Variability of coal mine overburden incorporated concrete and its effect on the seismic safety of reinforced concrete building

Jena,

Zade,

Sarkar

2024

Structural Concrete

View full text Add to dashboard Cite

Improved utilization of coal mine overburden material (CMOB)‐incorporated concrete in the construction sector can contribute to developing a more sustainable built environment if the results of proven research on the behavior of structures constructed of CMOB‐incorporated concrete are applied. Even though there have only been a few studies on CMOB‐incorporated concrete, no research has been done on how this type of concrete can be used in structures. In particular, researchers have not paid much attention to the fact that the strength properties of CMOB‐incorporated concrete tend to be very variable, even though this variability is needed for a wide range of structural applications (such as limit state design formulation, reliability‐based structural analysis, etc.). For the first time, this research provides quantitative estimates of the variability in compressive‐, flexural‐, and splitting tensile strengths of cured concrete using varying amounts of a CMOB sample as fine aggregate. Taking into account the suggested distribution model, the research also provides a reliability‐based seismic risk assessment of a standard CMOB‐incorporated framed building. The failure probability and dispersion in the drift demand were found to be the same for the frames modeled with CMOB and standard concrete (natural sand); the results demonstrate that CMOB samples can be safely used for earthquake‐resistant constructions.

show abstract

Experimental investigation for partial replacement of fine aggregates in concrete with sandstone

Cited by 15 publications

References 15 publications

Finding Alternative to River Sand in Building Construction

Finding Alternative to River Sand in Building Construction

Study of Mechanical properties of Sand extracted from Overburden of WCL Mines – the Effective Sustainable Sand Solution

Variability of coal mine overburden incorporated concrete and its effect on the seismic safety of reinforced concrete building

Contact Info

Product

Resources

About