Concrete Made with Iron Ore Tailings as a Fine Aggregate: …
When compared to reference concrete, the TS shown by the concrete with iron ore tailings aggregate improved by 4.8% with age . However, because of the greater fines content, the concrete with iron ore tailings aggregate would need more water to mix, which weakens the link between the aggregate and cement paste, and lowers the TS .
Study on the Durability of High-Content Oil Shale Concrete
This study evaluated the potential and environmental benefits of using oil shale residue as a replacement for fine aggregate in concrete through a series of …
Sandstone cutting waste as partial replacement of fine aggregates …
Extraction and mining of natural aggregates are rapidly increasing to cater to the demand for production of concrete, which further resulting in depletion of resources, causing accumulation of stone wastes and slurry wastes. ... While comparing to conventional fine aggregates, densities of concrete samples containing sandstone …
Study on the physical, mechanical and mineralogical …
Moreover, the dredged marine sand sediments have considerable economic and environmental advantages when employed as a substitute material for natural fine aggregates in concrete production. This study emphasis on the physical, mechanical and mineralogical characteristics of concrete replaced with dredged marine sand as fine …
Iron Ore Tailings as Partial Replacement for Fine Aggregate in Concrete
Normal River sand is one of the major components of concrete, generally termed fine aggregate. A large volume of sand is needed annually for construction work globally. Mining or extraction of sand from the river bed, ocean beds, beaches, and inland
Experimental investigation for partial replacement of …
Opencast mining contributes to the maximum production and productivity of many minerals, but it ... Experimental investigation for partial replacement of fine aggregates in concrete with sandstone .
Alternative fine aggregates in production of sustainable concrete …
Construction sector is mainly liable for waning of natural resources and environmental imbalances due to its unplanned mining activities. The massive use of concrete due to boom in various infrastructure development has led to over-extraction of river sand from the riverbed.
(PDF) The Suitability of Using Laterite as Sole Fine Aggregate …
The suitability or otherwise of laterite as the sole fine aggregate in concrete would depend on the amount of fine particles present in the laterite ... Mining of river and quarry sands is ...
A systematic comparison of performance of recycled concrete fine …
Natural river sand is preferred as fine aggregate. A large percentage of concrete comprises fine aggregates and hence river sand is over-mined due to …
Recycling of Mine Wastes in the Concrete Industry: A Review
Much scientific research has been conducted recently on the use of mining wastes in concrete in different forms (fillers, fine and coarse aggregates) destined for a variety of concrete usages.
Cleaner production of concrete by using industrial by-products as fine
Excessive river sand mining for use as fine aggregate in concrete is accountable for the deterioration of the river bed. Furthermore, floods due to changes in the directions of river flow and effect on biological diversity are major threats caused by …
High-strength concrete with different fine aggregate
High-strength concrete (HSC) has undergone many developments based on the studies of influence of cement type, type and proportions of mineral admixtures, type of superplasticizer and the mineralogical composition of coarse aggregates.
Iron Ore Tailings as Partial Replacement for Fine …
partially fine aggregates in concrete production. Iron ore tailings (IOT) are one of the mining wastes obtained from ... and cost of fine aggregate, and have sustainable mining
Effect of iron ore tailings as partial replacement to fine …
A study on durability and strength properties of high strength concrete with partial replacement of iron ore tailings with fine aggregates Article Jun 2022 N. …
Cleaner production of concrete by using industrial by-products as fine
To meet the demand of concrete in the construction industry, river sand mining increased drastically in the last few decades. Sand in the river bed is responsible for maintaining environmental equilibrium [1]. Excessive river sand mining for use as fine aggregate in concrete is accountable for the deterioration of the river bed.
(PDF) Use of Mining Waste as a Partial Replacement in Concrete …
Then the dried material was sieved before used as a fine sand aggregate in the experiment. Concrete specimens by replacing the fine aggregate from 0% to 50% with a 10% increment in marble powder ...
Utilisation of iron ore tailings as aggregates in concrete
tailings are segregated properly, both fine and coarse aggregates for concrete can be obtained. Therefore, if the iron ore mining companies in WA could incorporate comprehensive utilisation of the tailings in their operation, it could lead to cleaner production and sustainable development in their
Geomaterials as construction aggregates: a state-of-the-art
Modes of aggregates end-use Concerning the mode of utilization, aggregates are principally used either in a bound state (concrete) or unbound. …
Partial replacement of fine aggregate by steel slag and …
The main objective of the present study is to find out a suitable, effective and alternative material for partial replacement of fine and coarse aggregate, to find out possible utilization of waste materials in construction industry that in turn considerably minimize the usage of fine and coarse aggregate and ultimately reduce construction …
Characterisation of Iron Ore Tailings as Fine Aggregates …
Construction industry consumes bulk volume of natural resources. Fine aggregate is one such essential ingredient for construction materials such as concrete, mortar, masonry units etc. The properties of mortar and concrete largely depend on the quality of fine aggregate used. Natural river sand is widely used as fine aggregate.
Use of Coal Waste as Fine Aggregates in Concrete Paving …
The aim of this work was to study the use of coal waste to produce concrete paving blocks. The methodology considered the following steps: sampling of a coal mining waste; gravity separation of the fraction with specific gravity between 2.4 and 2.8; comminution of the material and particle size analysis; technological characterization of …
Reducing Environmental Degradation from Construction Activities…
Fine aggregates (sand) ... the use of the MRW in place of conventional aggregate will reduce aggregate mining and its associated environmental impacts ... Recycled aggregate concrete (RAC) becomes ...
Concrete containing low-sulphide waste rocks as fine and …
The present work elucidates this matter by investigating the reuse potential of low-sulfide mining waste-rock as fine and coarse aggregates for the manufacture of concrete. Accordingly, the study focuses on assessment of waste rocks reuse in concrete according to the valorization guidelines of non-hazardous inorganic wastes as …
The Potential Use of Waste Rock from Coal Mining for the
Elastic Modulus of Concrete. The effect of aggregate on elastic modulus was also studied using the testing equipment shown in Fig. 8 to evaluate the possibility of using aggregate from coal mining waste in producing concrete.
Sandstone cutting waste as partial replacement of fine aggregates …
The mining wastes in different sizes, either in the form of coarse aggregates, fine aggregates or powders, as a substitute of the natural aggregates or cement, in the manufacturing of more sustainable mortars of concretes, can be used.
What Aggregates & Industrial Minerals Do For You
7,205 tons of coarse and fine aggregate are used in concrete for each mile of a two-lane concrete highway (24' wide and 12" deep). One mile of a four-lane interstate highway used about 38,000 tons of aggregates. Aggregates make up more than 94% of asphalt and 80% of concrete pavements.
Chapter 10 Sand: The Fine Aggregate
Aggregates are essential to build and/or maintain infrastructural facilities that are intended for the overall development of a region. Developed countries need to sustain their level of productivity; whereas developing countries …
The Effect of Aggregate Properties on Concrete
Lightweight aggregate concrete may be more influenced by the compressive strength of the aggregates. ... This surface moisture on the fine aggregate creates a thick film over the surface of the particles pushing them apart and increasing the apparent volume. This is commonly known as bulking and can cause significant errors in proportioning volume.
Sand: The Fine Aggregate
Aggregate materials like sand, gravel, and crushed stone occupy a substantial volume of concrete used in constructions. The demand for high quality …
Comprehensive Guide to Fine Aggregates: Types, …
What are fine aggregates? Fine aggregates are natural sand particles or crushed stone particles smaller than ¼ inch, used in construction to fill voids between coarse aggregates and in mortar and concrete mixes. What are the main types of fine aggregates based on origin? Fine aggregates are classified into pit sand, river sand, …