Application of Granite Fines to Substitute Sand in Concrete Production
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 …
A critical review and gap analysis on the use of coal …
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 …
(PDF) Recycled aggregates in concrete production: …
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.
Quarry Dust as an Efficient Substitute for Sand
replacement of sand with quarry dust. This experimental study presents the variation in the strength and durability propertie s of. concrete when replacing sand by quarry dust from 0% to 5 0% in ...
Impact & Alternatives of River Sand
River Sand or the Bajri we refer to the sand that is used for construction purposes. Today it is the most required material. ... 1.5 million of C&D waste if recycled can significantly substitute the demand for natural sand in Delhi. Recycled sand and aggregate from C&D waste are said to have 10-15 percent lesser strength than normal …
Review and exploration of river sand substitutes for concrete
... The demand for fine aggregates in concrete production is constantly increasing, and natural sand supplies can no longer meet the rising demands of the …
Partial Replacement of River Sand w ith Robo Sand in …
This research is aimed at determining the suitability of ROBO sand to replace river sand in the production of concrete, using compressive strength and flexural strength tests as b asis for assessment. ISSN: 2350 -0328 ... ROBO sand is an ideal substitute to river sand. It is manufactured just the way nature has done for over a million
Partial replacement of sand with marble waste and scoria for …
Global production of concrete is about 12 billion tons a year corresponding to almost 1 m 3 per person per year making it one of the largest users of natural resources in the world [].It is predicted that concrete usage will increase to more than 7.5 billion m 3 (about 18 billion tons) a year by 2025 [].. Recently, the increasing consumption of …
Suitability of Ambo Sandstone Fine Aggregate as an …
[4]. Relative to this, searching a source of new substitute of fine aggregate for concrete production, which can be replaced naturally or river sand is significant.
Study shows coal-based product could replace sand in concrete …
Cement production, a key component of concrete, accounts for 8% of worldwide carbon dioxide emissions. Moreover, sand mining, largely unregulated, poses severe threats to river and coastal ecosystems. According to a 2022 United Nations report, this escalating demand for sand, coupled with population growth and urban expansion, …
Recent Trends in Replacement of Natural Sand With
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 ...
Standing Committee on Concrete Technology Annual …
announced in 2009 to gradually reduce the annual export quota of river sand to Hong Kong and. other places. According to the data provided by CEDD, the consumption of river sand for concrete production in. Hong Kong decreased from 640,000T in 2008 to 160,000T in 2018 which is about 75% drop. (The Quantity of Natural Sand from Mainland used in ...
Replacement of River Sand with Quarry Dust in …
One such material is River Sand, which is used as a fine aggregate in concrete production. This has resulted increased use of quarry dust as a substitute to river sand, as a fine aggregate.
Investigation on the feasibility of using completely …
In light of the unsustainable provision of river sand in Hong Kong and the limitations of existing river sand substitutes, Hong Kong urgently needs to discover new river sand substitutes to meet the growing demand for …
Alternative fine aggregates in production of sustainable concrete …
Feasibility assessment and application of sea sand in concrete production: A review. 2024, Structures. Show abstract. ... sand significantly impact the performance of SWSSC and are a crucial factor in determining whether it can serve as a substitute for river sand in concrete. These characteristics include the particle size …
EVALUATION OF THE POTENTIAL OF SEA SAND AS AN ALTERNATIVE TO RIVER SAND
types, mixed sea sand and river sand (1:1) compared to river sand and quarry dust. Crushing strength vs grain size of the different fine agg regates. Journal of Geologica l Society of Sri Lanka ...
Quarry Dust: An Excellent Substitute for Manufactured Sand …
Since there is depletion of river sand, an attempt has been made in this paper to study the possibility of utilizing manufactured sand as fine aggregate. Further, quarry dust, an industrial waste material, has been used as a substitute for manufactured sand for the production of ed concrete.
Sustainable Alternate Materials for Concrete Production …
Natural resources are being continuously extracted for the production of concrete which leads to degradation of the ecosystem. This is also a challenge for sustainability to save Nature. This study seeks to identify a suitable replacement material for river sand and stone aggregate for the sustainable utilization of renewable sources. …
International Concrete Abstracts Portal
Date: 9/1/2020. This study investigates the feasibility of using induction furnace slag as a substitute for river sand/manufactured sand (M-sand) in the production of concrete. The properties of concrete made with slag fine aggregate is compared with concrete made of river sand and M-sand. Experimental studies have been carried out on concretes ...
Research on River Sand Substitutes for Concrete Production and
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 …
Sustainable integration of coal mine overburden as a substitute …
A large volume of crushed CMOB can be used [18] as a substitute for river sand in concrete production, which will help conserve natural resources in addition to waste disposal. However, for the actual use of this waste material in concrete construction to begin or increase sufficiently, extensive research on this material is necessary which ...
Pertinence of alternative fine aggregates for concrete and …
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 …
Life Cycle Assessment of River Sand and Aggregates …
New assessment based on satellite images of sand mining operations in Mekong fluvial system of Cambodia revealed that rates of extraction have increased from 24 in 2016 to. 59 Mt in 2020 at a rate ...
Research on River Sand Substitutes for Concrete …
in the production of concrete and cement-sand mortar • The Construction Industry Council has launched a research project entitled "Research on River Sand Substitutes for Concrete Production and Cement Sand Mortar Production". • To identify alternative materials to supplement river sand, the research will go through two phases
Investigation on Utilizing of Steel Slag as a Partial
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. It is difficult to produce iron in a blast furnace without first producing steel by-products,...
Analysis of the Compressive Strength of Concrete with Quarry Dust, Sand
Based on economic analysis and results of tests, river sand replaced with 20% CGF is recommended for use in the production of concrete for use in rigid pavement.
Suitability of Quarry Dust as Partial Replacement Material for Sand …
It was established that, comparatively to normal concrete at 28 days, the compressive and tensile strengths of concrete with mine-tailings and river sand increased from 27MPA to 37.5 MPA, and from ...
Life Cycle Assessment of River Sand and Aggregates Alternatives in Concrete
The brick grains absorb a lot of water. Anyhow, the German standard only permits a maximum of 30% brick content. Magmatic and metamorphic rocks (with the exception of amphibolite) can be used as manufactured aggregates, replacing natural sand …
River Sand
Keywords: concrete, natural river sand, substitutes 1 BACKGROUND Quality of concrete production is highly dependent on the constituents and their optimum ratio. Fine sand and coarse aggregates generally occupy 60% to 75% of the concrete volume and thus strongly influence its hardened properties, mixture proportion and economy.
Executive Summary
there is an acute shortage of river sand, which has been commonly used as fine aggregate in concrete and mortar. In view of such situation, the Construction Industry Council has …