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 …

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 .

Three kinds of concrete (ordinary concrete, concrete with iron tailings sand (ITS), and concrete with ITS modified by polypropylene fibers) were exposed to drying-wetting cycles in 5% Na2SO4 ...

The replacement of sand with stone dust at various ratios in medium-grade concrete showed an increase of up to 40 and 29% in compressive and up to 53 and 32% in flexural strengths for 7- and 28 ...

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 …

3.1 Cheaper Alternatives to Concrete. Concrete is known for being a reliable building material, but it can also be expensive. If you're working on a budget, there are plenty of cheaper alternatives to concrete that can help you save money without sacing durability.. Gravel: One of the most popular cheap concrete alternatives, gravel is easy …

2) The Mix design with of river sand has achieved [3] Ilangovana, R. Mahendrana, N. and Nagamanib, K. compressive strength of 28.10 Mpa, Crushed Sand gives (2008), 'Strength and durability properties of concrete 0.65 MPa higher than that of river sand. containing crush sand as fine aggregates', ARPN Journal 3) The improved properties ...

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 …

Using different pro portion of this robo sand along with sand the required concrete mix can be obtained. Replacement of natural fine aggregate with artificial fine aggregate by 0%, 10%, 20%, 50%, 70, and also finding ... viable substitute for river sand, he said it could be used in reinforced concrete, brick work. Explaining the efficacy ...

The replacement of sand with stone dust at various ratios in medium-grade concrete showed an increase of up to 40 and 29% in …

The exhaustion of major sources of natural sand (NS) around the globe, compounded with environmental and ecological considerations, has motivated the use of alternative materials for sustainable concrete construction (Xiao et al. 2012; Thomas et al. 2013; Guo et al. 2018; Strukar et al. 2019).At the same time, a huge amount of granite …

Table 3: Specific Gravities of cement, M sand, River sand and 10mm & 20mm coarse aggregates MATERIAL OBSERVED AVERAGE SPECIFIC GRAVITY CEMENT 3.15 M SAND 2.65 RIVER SAND 2.64 10mm AGGREGATE 2.71 20mm AGGREGATE 2.72 3.2 Sieve Analysis and Clay and Silt content of Aggregates The gradation test or sieve …

In order to mix, set, lay, and harden concrete, water serves as a lubricant. The majority of studies on using crushed sand as an alternative for some sand of river in concrete focuses on concrete grades up to M40. However, there is a dearth of material on HPC using higher grade. Stone dust

proportion with crusher stone dust with higher compressive strength than the established mix design M 25 using river sand. KEYWORDS: fine aggregate, Mix design, M25 grade concrete, admixtures, compressive strength. I. INTRODUCTION Concrete is the most ordinarily used artificial construction material on earth, composed of cement (commonly …

Urbanization processes in Asia are still ongoing; thus, aggregate demand is expected to increase in following years. Even though construction and demolition waste is a source for secondary building materials in industrialized countries, it is not yet an alternative construction material source in Vietnam as the urbanization process is still ongoing. …

River-sand mining has risen dramatically in the last few decades to fulfil the need for concrete in the building sector. The sand in a river's bed preserves its …

The mix ratio adopted to prepare concrete is 1:1.5:3 with a water-to-cement ratio of 0.55 natural sand used as a fine aggregate in concrete and the same was partially replaced with sawdust at ...

cement mortar and concrete. Now a days, river sand becomes scarce and costly too, which is one of the very important ingredient ... substitute for river sand in cement mortar and concrete, to overcome the environmental problems created due to over mining. ... In this work, cement mortar mix with 1:4 and 1:6 was selected for 0, 20, 40, 60, 80 ...

The challenging issue of demand for sand in concrete can be addressed by exploring alternative materials. Mechanism sand [12], aeolian sand [13], waste foundry sand [14], construction demolition waste [15], industrial by-products (such as coal ash, aged clay tailings, copper tailings) [16], [17], [18], and sea sand [19] are among the …

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 …

The goal of this project is to employ grit to find alternatives to river sand. The study came to the conclusion that using grit in construction is more cost-effective since it provides the highest level of usage, despite the fact that it is a frequent industrial waste. ... The concrete mix batched by volume is the proportion of each constituent ...

Cement, fine and coarse aggregate, and water are all utilised in the making of concrete. In today's world a natural river sand is being exploited due to high expansion of construction industry, hence affecting the natural resources. Quarry dust could be substituted for natural river sand.

partial replacement for Sand in concrete. Attempts have been made to study the properties of concrete and to investigate some ... environmentally friendly substitutes for cement and river sand that are preferably byproducts. Fly ash (pulverized fuel ... the water addition to the dry mix[5]. IV. FLY-ASH A. Origin of the Fly-ash:

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.

material used for preparation of mortar and concrete and which plays a major role in mix design. Now a day's erosion of rivers and considering environmental issues, there is a …

mortars for the compressive strength test to find the best mix ratio of sand for construction purposes. Finally those results were compared with strength of concrete for which river sand was used. Keywords: Compressive strength, Concrete, Mortar, River sand Substitutes finer aggre 1. Introduction

1. Concrete Production. River sand is a key ingredient in concrete production, serving as a fine aggregate that binds with cement, water, and other additives to form a solid and durable construction material. 2. Mortar Mixes. River sand is also used in mortar mixes to provide workability, cohesion, and strength to the mixture.

the water-cement ratio and workability of the concrete mix, necessitating adjustments in the mix d esign[32]. ... alternative to river sand in concrete production[42].

The increasing demand for river sand, driven by infrastructure development, poses environmental challenges. The study aims to address the depletion of river sand by integrating sea sand as a fine aggregate in the production of Self-Compacting Concrete (SCC) through a Systematic Literature Review. Furthermore, it includes an in-depth …

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.