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The Concrete is a mixture which generally consists of cement, fine aggregate, coarse aggregate and water. Natural river sand is the most commonly used material as fine aggregate in concrete.
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The natural river sand has been used as a fine aggregate in concrete construction for several decades. In spite of the abundance of sand on the earth's surface, it is a finite natural resource that can soon be depleted. ... This resulted in no ASR expansion when smaller size glass particles were used to replace natural sand in concrete ...
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River sand, also known as natural sand, is a vital material used in various construction applications. Its unique properties make it a preferred choice for builders …
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Natural river sand is the most commonly used material as fine aggregate in concrete. It has been already proved that the conventional ... discussed for M30 grade concrete with natural sand and ...
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Mining of natural river sand affects river banks and is banned in many countries. Earlier studies suggested recycled aggregates as an alternative to river sand. Although studies on the use of recycled fine aggregates have been reported, a systematic review on the comparison of recycled aggregates with other alternative fine aggregates …
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Concrete is the most widely used and versatile material of construction all over the world. All these years, natural river sand is being used as fine aggregate, by the Sri Lankan concrete industry.
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To solve the problem of the proportional design of cement concrete prepared by using manufactured sand instead of river sand, a new method of manufactured sand concrete …
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1. Introduction. Urbanization and growing populations have accelerated the development of human infrastructure, as well as the reliance and demand on concrete and steel bars [1].River sand and freshwater are typically used in the making of concrete [2].In some coastal cities and island areas, river sand for construction is in short supply due …
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1. Introduction. The construction industry has a profound effect on the environment, accounting for more than 50% of the exploitation of natural resources [1], such as coarse and fine aggregates, and is responsible for 39% of carbon dioxide (CO 2) emissions [2].To address this issue, researchers have explored alternative materials, …
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Considering the shortage of natural river sand and freshwater for concrete production, this study proposes that sea sand and seawater can be directly used in the manufacture of compression ...
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mates, river sand account s for more than 60% of th e total sand used in concrete production worldwide [13] . In Africa, river sand is the m ost common source of sand for concrete produ c-
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Studies conducted on the utilization of Used Foundry Sand (a byproduct of the foundry industry) at 20% give on par results compared to natural sand in concrete [13] [14] [15][16]. Currently, these ...
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Parashar et al. used WFS as a partial replacement for natural river sand in concrete, employing varying percentages (0%, 10%, 20%, 30%, and 40%). The results showed that substituting WFS for natural sand reduces the compressive strength of concrete.
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The increasing annual emissions of iron ore tailings have proved a great threat to the natural environment, and the shortage of natural river sand, as well as the pursuit of sustainable development materials, provides motivation to reuse iron ore tailings as a fine aggregate in concrete. Due to the significantly different properties of iron …
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The global utilization of natural river sand is very high due to the extended use of concrete. At the construction fields one of the major issue is unavailability of …
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So far, the inherent deficiencies of natural river sand are extensively used for the modification of concrete properties by incorporating manufactured sand as a partial replacement for river sand. It can also be concluded that the M-sand can be utilized as an efficient fine aggregate in concrete in order to meet the global scarcity of river ...
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When sea sand is used in place of river sand, the splitting tensile strength of concrete may be somewhat reduced compared to traditional concrete [95]. Wegian et al. found that mixing seawater can increase compressive and tensile strength after 14 days, but these strengths decrease between 28–90 days [35]. Bhuvaneswari1 et al. substituted ...
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For M40 grade concrete, WFS is used in place of natural river sand. in varied amounts (10 percent, 20 percent, 30 percent). • Concrete that uses WFS in place of some sand has up to a 30% increase in mechanical and fresh properties. A marginal reduction of strength at the 40% replacement level. •
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Using alternative material to a natural river sand in concrete can provide solutions to demand and sudden price hikes [5, 9]. Quarry dust is a rubbished substance formed …
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1. Introduction. Rapid urbanization made concrete the most widely used construction material worldwide. As the major fine aggregate of commercial ready-mix concrete, the natural river sand resource is therefore depleting [1], [2].On the other hand, the fine fraction of the recycled concrete aggregate derived from construction and …
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As depicted in Fig. 5 and Table 7, steel slag fine aggregate, as compared to natural river sand, performs better in the test and can be used to cover up to 30% of the natural river sand as a fine aggregate. As compared to natural river sand, slag sand performs better following a 28-day curing period; however, it does not achieve the same …
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Natural river sand is the most commonly used material as fine aggregate in concrete. One of the important requirements of concrete is that it should be durable …
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A B S T R A C T Concrete being most extensively used construction material all over the globe has resulted in the over-exploitation of natural resources such as river-sand and gravels.
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Sand is often utilized as a fine aggregate in concrete, contributing 22 to 62% of the total mass. The quantity and features of sand in concrete have an impact on its workability, mechanical characteristics, and durability. Effective replacements are needed as natural silica sand becomes scarcer. By incorporating these by-products into …
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Most of these studies investigated mechanical properties of concrete and show that GMT can substitute natural river sand (NRS) up to 30% in a mortar typically consisting of cement and sand. These studies showed that the compressive strength can decrease beyond 30% of substitution; but other characteristics like water retention can …
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The shrinkage reducing agent (SRA) was the most effective shrinkage reducing method for river sand concrete, while for iron tailings sand concrete, super absorbent polymer (SAP) and controlled ...
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In addition to mortar and plastering, river sand is used for concrete. The Sand provides an aggregate, which can be combined with water, cement, and other materials to form concrete. ... The Sand provides a natural-looking aesthetic, which is perfect for use in rock gardens and for providing structural support for flower and vegetable beds. The ...
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Also called natural sand, river sand is categorized as fine sand and is usually found near streams and river banks. The softness of river sand allows for its usage in …
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More alternative by-product materials are used to substitute the use of cement, natural sand, and rocks for concrete to reduce emissions [1] and preserve natural supplies [2].
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The increasing annual emissions of iron ore tailings have proved a great threat to the natural environment, and the shortage of natural river sand, as well as the pursuit of sustainable development materials, provides motivation to reuse iron ore tailings as a fine aggregate in concrete. Due to the …
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