##tihuan2##Due to the high costs of traditional concrete materials in Nigeria, such as river sand, there is an increasing demand to explore alternative materials like laterite for fine aggregates. Although ...
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##tihuan2##This paper is completed by the formulation of three types of concrete with a constant w/c ratio of 0.54: A concrete with gneiss aggregates (CSGG), a mixed concrete composed of river sand and ...
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##tihuan2##day‟s river erosion and other environmental issues have led to the scarcity of river sand. The reduction in the sources of natural sand and the requirement for reduction in the cost of concrete production has resulted in the increased need to find new alternative materials to replace river sand so that excess river erosion is prevented
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##tihuan2##Potential primary sand sources crushed and round river concrete quartz …
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##tihuan2##Its fine texture and natural color make it attractive and easy to work with. It can be used as backfill material or to fill gaps and cracks in various surfaces. River sand can also be used to build level foundations and fill in yards' low spots. Concrete sand. Concrete sand is an essential component of many construction projects.
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##tihuan2##Manufactured sand, commonly known as M sand, has gained prominence as a viable substitute for river sand. In this blog, we will delve into M sand vs river sand and understand their characteristics and highlight their differences. ... Ready Mix Concrete (RMC) and white cement in India. It is also one of the leading cement producers globally.
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##tihuan2##This chapter presents a study aimed at investigating the utilization of steel slag as a partial replacement of natural river sand as a fine aggregate in concrete production. ... Table 5 Design mix for FA slag sand and natural river sand ... and Hisham Qasrawi et al. shows that the loss of workability is due to the substitution of sand with a ...
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##tihuan2##The aim of this study is to analyze the probability of using crushed stone dust as a substitute of fine aggregate (i.e. River Sand) in concrete at 3 MTPA Integrated Steel Plant Project by TATA Steel, Kalinganagar, …
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##tihuan2##Construction industries around the world are facing many difficulties in obtaining good-quality fine aggregates for concrete and mortar due to a shortage of river sand.
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##tihuan2##To substitute river sand, the concrete mix M4 (51% beach sand + 49% quarry powder) was discovered to be the best. It has a compressive durability t of 39.7 ± 0.20 MPaf. Quarry powder has been shown to boost the compressive durability of concrete. Mix M4 has split tensile durability of 3.9 ± 0.15 MPa and flexural durability of …
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##tihuan2##Concrete mix design for river sand Cement Fine aggregate Coarse aggregate Water Admixture Per Cum 0.21 Cum 0.56 Cum 0.66 Cum 152.50litres 0.90Litres Per 50kg 50kg (1 Bag) 168 kg 182 kg 25 liters 150 ml A) Using River Sand Concrete mix design for Crushed sand Cement Fine aggregate Coarse aggregate Water …
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##tihuan2##Waster Foundry Sand upto 30% substitution is considered as ideal …
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##tihuan2##Concrete mix design Concrete mix design used in this study for control specimen closely followed the mix design used by Pioneer North Queensland (PNQ) for their commercial concrete plant (as shown in Table 2). The mix design was designed for a characteristic strength of 32 MPa at 28 days.
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##tihuan2##Six self-compacting concrete (SCC) mixes were made by partially substituting river sand with IF at 5%, 10%, 15%, and 20% and the mix without IF (0% IF) served as the control. The water-binder (w/b) ratio of 0.45 was adopted for all mixes.
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##tihuan2##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. Alternate options for River sand Erosion ...
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##tihuan2##Increasing th e r eplacement ratio of river sand in concrete mix-ture to more th an 25% and 35% for normal and high strength con-crete, respectivel y, leads to decrease in the mechanical properties .
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##tihuan2##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.
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##tihuan2##Key Words: M-Sand, N-Sand, Alternative of river sand, PSD of M-sand INTRODUCTION Concrete is combination of two types of material, one is binding material and second
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##tihuan2##Also the properties M-sand properties are very much similar to river sand. Along with Specific Gravity, Water absorption and silt and clay content, particle size distribution of M-sand are compatible for use in construction as river sand. Henceforth M-sand is a suitable substitute for river sand at reasonable cost.
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##tihuan2##This investigation used sawdust to substitute river sand in the concrete mix proportions of 5%, 10%, 15%, and 20% by weight. The impact of compressive strength, workability, and density was investigated by changing the amount of sand replacement with sawdust. Concrete cubes of 100 mm × 100 mm × 100 mm were produced for …
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##tihuan2##Table 2 presents the cube compressive strength of concrete mixes containing 5%, 10%, 15%, 20% and 30% of coir pith as partial fine aggregate subjected to standard water curing and self-curing. From the results, it is clear that the conventional concrete mix achieved the required target strength at all days of curing. Concrete mixes containing …
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##tihuan2##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, …
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##tihuan2##Some regions have overused river sand, affecting the stability of riverbanks and raising environmental issues. ... from 5 to 15% substitution with sand caused reduction in workability from 50 to 30 mm. ... reported that when glass waste powder is used as the fine aggregate a range of 10–30% in nominal mix concrete, the concrete's spilt ...
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##tihuan2##Therefore, on considering the uncertainty on the concrete mix analysis in this study, other aggregates can also be considered for sustainable consumption. ... Arulmoly, B.; Konthesingha, C. Pertinence …
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##tihuan2##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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##tihuan2##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 ... A slight decrease in water absorption was found in a concrete mix with 20 % of CS as sand replacement, as shown in Fig. 9. This was attributed to the low water absorption of CS (0.18–0.36 % ...
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##tihuan2##2.1. Regulatory Framework for the Investigations. The production of concrete, the design and construction of concrete parts, the determination of properties and application rules in construction are regulated in the standard TCVN 7570:2006 "Aggregates for concrete and mortar—Specifications" [].The main requirements for …
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##tihuan2##A brief review has been carried out to identify the alternatives suggested by researchers, merits and demerits of substitutions, availability of standards, and previous studies on the effects of replacing river sand with alternatives in concrete and mortar. Manufactured sand (M Sand), offshore sand, sea sand, quarry dust, and demolition …
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##tihuan2##Request PDF | On Nov 22, 2012, Chun-pong Sing and others published Review and exploration of river sand substitutes for concrete production in Asian countries | Find, read and cite all the ...
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