river sand substitute for concrete production
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- river sand substitute for concrete production
2.2.3. Mix design and concrete preparation. The ashes, SCB FA and SCB BA, were added as a replacement of sand in percentages of substitution of 10%, 20% and 30% (weight of sand). For all the ashes assessed, the water in the mixes designs was estimated considering the possible binder capacity of the ashes.
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The lack of river sand has led to the use of sea-sand and crushed stone fines in many countries, with the use of sea-sand in the UK being an example [4].More than 90% of the world's dredged sea-sand has been used as a raw material in the construction industry, with over 45% of the dredged sea-sand being used as fine aggregate for …
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The CBA used in the reviewed studies has similar fineness modulus (FM) to that of river sand, approximately 1.6–2.2, making it a suitable substitute for fine aggregates (Youcai and Sheng, 2017).The significant presence of silica and alumina in CBA allows its use as an OPC replacement and potentially a constituent in geopolymer concrete.
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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 …
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This study uses M-sand as fine aggregate and CS coarse aggregate in place of river sand (R-sand) and crushed stone aggregate (CSA) for concrete production, respectively. To prove that M-sand and …
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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% ...
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Expensive and scarcity of river sand which is one of the constituent material used in the production of conventional concrete was reported recently in India [12]. Therefore in order to overcome the stress and demand for river sand, red earth soil, lateritic soil and quarry dust have been identified and evaluated to provide an alternative in ...
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The paper presents results of study on concrete using quarry dust to replace sand at levels of 0%, 25%, and by weight. Design mixes were prepared to achieve concrete grades C25, C30, C35, C40 ...
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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 quarry dust...
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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-
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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.
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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 …
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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.
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Construction industries consume a large part of the natural resources in the production of concrete. Utilization of the waste in concrete has gained interest due to the development in the construction structure and depletion of natural resources. ... Poornima et al. found the effect of dolomite as a substitute for the river sand in mortar. The ...
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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.
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M sand is a form of artificial sand, manufactured by crushing large hard stones, mainly rocks or granite, into fine particles, which is then washed and finely graded. It is widely used as a substitute for river sand for construction purposes, mostly in the production of concrete and mortar mix.
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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 ...
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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 …
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According to the CEDD (2009), the natural river sand used in Hong Kong has been mainly imported from mainland China and in 2009, it was reported to be 1,800,000 (tonnes). Figure 1 shows that almost 24% of the river sand imported was used for concrete production. China is the major supplier of river sand to Hong Kong.
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The primary substitute for mining natural sand is crushed rock, for which there are abundant geological resources. 68 The use of other substitutes such as recycled construction and demolition waste, municipal solid-waste incineration slag, or blast furnace slag (a by-product of steel production) is likely to expand in response to efforts for ...
به خواندن ادامه دهیدThese 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.
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Demerits like the presence of high percentage of salt in marine sand, a large amount of dust in quarry sand and loosely packed particles in dune sand make them unfit for production of concrete. Therefore, river sand is still used extensively in construction leading to its massive depletion, change in river course, disappearing of beaches ...
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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 …
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A comparative life cycle impact assessment study of four concrete mixes with different GF replacement levels is conducted by considering the cradle-to-gate boundary for the Singapore scenario. The results turn out that around 20% environmental impact reduction can be realized via the replacement of 25.6%−50% NS with GF.
به خواندن ادامه دهیدThe obtained results clearly suggest that glass sand cannot be used to produce eco-friendly concrete by using more than 50% glass sand as a substitute for natural sand in order to ensure the production of moderate strength concrete …
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Sea sand was partially replaced in river sand (0% to ) for each proportion of Fine Aggregates (FA) cement concrete blocks were cast and tested for …
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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).
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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).
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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
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