In the meantime, the river sand acquired from waterway beds has been utilized primarily in the process of fine aggregate in the production of concrete. Because the supply of River sand is insufficient and its continuous supply is uncertain, use of Manufactured Sand (M-Sand) and Quarry Dust Sand as a substitute for
This research elucidates the idea of eco-friendly concrete and highlights the benefits attainable from its effective practice towards sustainable construction materials. The design mix employed a water/cement ratio of 0.5, a concrete mix ratio of 1:2:4, varying percentages of 2.5 mm seashells, 4.75 mm river sand as fine aggregates, and granite …
Ecological resources are constantly consumed to produce concrete, resulting in environmental damage. This is also one of the issues for environmental sustainability. This study discovers a replacement material of river sand and stone aggregates produced from sustainable utilization of renewables to save the environment. Manufactured sand …
Manufactured sand (M Sand), offshore sand, sea sand, quarry dust, and demolition waste have been identified as the most common substitutions for river sand. M Sand and …
Researchers agree that waste quarry dust at 20% (Imran and Muthu, 2018) sand replacement can increase the compressive and flexural strength of concrete by 10% and splitting tensile strength by 15% ...
WebPrimary aggregate substitutes: concrete sand, round (SR), concrete sand, broken (SB), marble (MA), amphibolite (AM), granodiorite (GD); basalt (BA); …
The percentage passing 150 microns of manufactured sand is relaxed to 20% (while that of natural sand is limited to 10%). As per design and economics, crushed sand can be used to partially or fully replace river sand from a concrete mix. The Availability of crushed sand is not a concern as it can be manufactured from rocks in any season.
Concrete production consumes large amounts of fresh water and river sand [1]. However, ... The CPWS was used to partially substitute river sand and stone dust at 5, 10, 15 and 20% in sandcrete ...
These changes can play a useful role in some applications, in particular for the production of lightweight concrete. The replacement of sand by waste PET decreases the water absorption of mortar from 9.05% to 6.73% as the plastic aggregate content increases from 0% to , which also has positive practical significance.
The consumption rate of fine aggregate has become very high due to the excessive usage of concrete and mortar in infrastructure developments (Sankh et al. 2018). The demand for river sand has been ...
Quarry dust can be partially used as an alternative to river sand, as fine aggregate in concrete production. It is basically a by-product of stone crushers produced during the crushing and screening process of coarse aggregates. The replacement of river sand with quarry dust enhances the compressive strength of the concrete to a limited extent.
Concrete with walnut shells and Steel Slag (SS) as replacement of coarse aggregate and sand respectively reported that workability reduces when replacement is at 10% due to high water absorption property in steel as FA [6]. The increase in substitution of sand with Waste Foundry Sand (WFS) resulted in decreased slump.
It is a suitable type of material to substitute river-sand in the production of low-density concrete due to its low specific density, ranging from 1.39 to 2.22 g/cm 3 …
river sand in the production of concrete, using compressive strength and flexural strength tests as basis for assessment. 1.3 ROBO Sand: ROBO sand is an ideal substitute to river sand. It is manufactured just the way nature has done for over a million years. ROBO sand is created by a rock-hit-
The good quality materials, especially river sand is in great demand for sustainable infrastructural development. Use of sustainable approach to making resources efficient concrete is emphasised at both production and demolition stages (Sankh et al., 2014; Pilegis et al., 2016; Kumar et al., 2018).
Abstract. Ecological resources are constantly consumed to produce concrete, resulting in environmental damage. This is also one of the issues for environmental …
CPS contains mechanical and chemical properties that allow it to be utilized in concrete as a substitute for cement or sand, depending on the application. ... TS at 7 days and 14 days is 33% and 23% lower than reference TS at 60% replacement of CPS instead of natural river sand. However, TS of concrete at 28 and 90 days of curing is 6% and …
This research appraised the effects of recycling senilia senilis waste seashells as a full or partial substitution for natural coarse aggregate (granite) in eco-friendly concrete production. The design mix employed a 1:2:4 concrete mix ratio for M25 grade, a w/c ratio of 0.5, river sand as fine aggregate, ordinary Portland cement (OPC) as a binder, and …
The sand is usually excavated from river beds or river bank by digging. The natural sand deposits are getting depleted by continuous digging causing damage to the environment in many ways. As the supply of suitable natural sand near the point of consumption is becoming exhausted, the shortage of good natural sand for concrete production is ...
He observed that 15% partial replacement was the optimum dosage. To address the cement/concrete industry's environmental and economic challenges, Malik et al. (2013) used waste glass as a partial replacement for fine aggregates (sand) in concrete. Several samples were made by replacing sand with glass contents of 10%, 20%, 30%, …
Effects of elevated temperature and water quenching on strength and microstructure of mortars with river sand substitutes. Constr. Build. Mater., 114 (2016), pp. 688-698. ... Research on River Sand Substitutes for Concrete Production and Cement Sand Mortar Production (Phase two) Final Report, Version, 1 (2016), p. …
The abrasion resistance and the strength properties of concrete having 40 MPa compressive strength at 28 days made with 4.75 mm nominal size natural sand and 12.50 mm nominal size coarse aggregate with used foundry sand as a partial substitute to river sand at 0, 5, 10, 15, and 20% were investigated by Singh and Siddique and …
Michael et al. have studied the various river sand substitute for concrete production in Asian countries and concluded that manufactured sand is better substitute for river sand. Sankh gives a review of the different alternatives to natural sand in preparation of mortar and concrete. ... Review and exploration of river substitutes for …
... More alternative by-product materials are used to substitute the use of cement, natural sand, and rocks for concrete to …
The technical feasibility is conducted for three classes of concrete, i.e., C32/40, C40/50, and C50/60 produced with GF with varying fines content which is defined as the percentage of particle size finer than 62.5 μm (10%, 16%, and 22%) and percentage substitution (0%, 30%, 50%, 75%, and ). The technical feasibility of producing …
Granite granules are the waste product obtained while cutting granite which is cost effective and sea sand is abundantly available in coastal areas when compared to river sand. This full replacement can be used in Plain Cement Concrete (PCC). Concrete cube is cast to test the compression strength for M5 grade concrete (since it is for PPC).
It is a suitable type of material to substitute river-sand in the production of low-density concrete due to its low specific density, ranging from 1.39 to 2.22 g/cm 3 (Table 1). The morphology of CBA may be rounded or spherical, angular, or irregular, with high porosity and rough surface roughness ( Fig. 4 ), according to scanning electron ...
Using X-ray diffraction techniques and mineral composition analysis recently also showed similar results [18] [19] [20]. However, the surface structure of sea sand is different from river sand ...
The present study emphasizes the combined use of quarry waste ( substitute for river sand) and fly ash (0, 10, 20, 30 and 40% substitute for cement) for sustainable masonry block production. The physical, mechanical, and durability properties of cement blocks made using fly ash and quarry waste underwent a thorough investigation.
This pdf document provides a comprehensive review on the technical aspects of aggregate used in concrete and mortar production, such as grading, shape, texture, strength, durability, and environmental impact. It also compares the performance and suitability of different types of aggregate, such as river sand, crushed rock fines, and manufactured …