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Concrete plays a major role in the construction industry. Natural sand is a prime material used for the preparation of concrete and also plays an important role in Mix Design. Now a 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
Locally available river sand have density 1710 kg/m3 is used and specific gravity is 2.65 and finance of modulus of river sand is 5.24. m /crush sand used as partial replacement of fine sand in construction line and the density of M /crush sand is 1750 kg/m3, specific gravity and fineness of modulus is found to be 2.73 and 4.66 respectively.
Granular soils range in particle size from .003" to .08" (sand) and .08" to 1.0" (fine to medium gravel). Granular soils are known for their water-draining properties. Characteristics Sand and gravel obtain maximum density in either a fully dry or saturated state. Testing curves …
India email 2 Structural Engineer, The objective of this study is to investigate the influence of partial replacement of natural river sand by quarry dust in different percentages and to study the effect of replacement of cement by fly ash in the preparation of self compacting 383-1970 (Reaf. 2007) from a Cone crusher. 4.Water
Sand is used as fine aggregate in concrete. Natural river sand is the most preferred choice as a fine aggregate material. River sand is a product of natural weathering of rocks over a period of millions of years. It is mined from the river beds and sand mining has disastrous environmental consequences. River sand is becoming a
Sand Replacement Method is also known as Sand Cone Method. The apparatus used in this field density test consists of a sand pouring cylinder, with pouring cone at its base. There is a shutter between the cylinder and the cone.
May 12, 2014· Before we get into the advantages and disadvantages of manufactured sand, what exactly is manufactured sand? Manufactured sand is sand produced by crushing rocks, quarry stones or larger aggregates pieces into sand-sized particles. Natural sand, on the other hand is the naturally formed sand extracted from river beds.
Silica sand, also known as quartz sand, white sand, or industrial sand, is made up of two main elements: silica and oxygen. Specifically, silica sand is made up of silicon dioxide (SiO2). The most common form of SiO2 is quartz – a chemically inert and relatively hard mineral.
Fig 2:Compaction curve of Crusher dust 2.2 Sand: Sand was collected from river Nagavali,Srikakulam, Andhra Pradesh. The collected sand was dried and subjected for various geo-technical characterizations such as gradation, compaction characteristics, strength, permeability etc., and the test results are shown in table-2 and Fig 3 &4. 0 10 20 30
Jan 01, 2018· The deficit of natural sand arise the need of alternative materials for replacement of natural sand. This experimental study explores in detail the crushed stone dust which is locally available industrial solid waste material in India as alternative material to natural sand that is being conventionally used as fine aggregate in cement concrete.
partial or full replacement to river sand is the need of the hour as a long term solution in Indian concrete industry until other suitable alternative fine aggregate are developed. In the present study, a comparison of the Compressive strengths of River Sand and M-sand is done with the hundred percent replacement of river sand by M sand. Index
Lot of research has been done regarding the crusher dust as alternative materials for river sand. Misra (1984) studied the effect of complete replacement of sand by stone dust in the cement
Sep 01, 2016· The effects on each of these properties were examined by changing the percentage replacement of Natural River sand (NS) with crushed rock sand (CRS). An optimization study was performed to study the effect on the properties of concrete when paste content was held constant and the fly ash was considered to be powder instead of aggregates.
India, the use of slag - a waste from steel industry, fly ash - a waste from thermal power plants, crushed over-burnt bricks and tiles - waste from clay brick and tile industry, in plain cement concrete as an alternative to sand/natural aggregate, subject to fulfilling the requirements of the Code. This Code, further, encourages use
The River sand lifting from river bed, impact the environment in many ways: Due to digging of the sand from river bed reduces the water head, so less percolation of rain water in ground, which result in lower ground water level. The roots of the tree may not be able to get water. The rainwater flowing in the river contents more impurities.
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A huge quantity of concrete is consumed by global construction industry. In India, the conventional concrete is mostly produced by using natural sand obtained from the riverbeds as fine aggregate. The advantage of natural sand is that the particles are cubical or rounded with smooth surface texture. The grading of natural sand is always not ideal.
India, demands comparatively greater cost at around two to three times the cost for crusher waste even in places where river sand is available nearby. The function of the fine aggregate is to assist in producing workability and uniformity in the mixture. replacement of sand from 0% to in step of 10%.
Feb 29, 2016· Higher concrete strength compared to river sand used for concreting. Lesser concrete compared to M Sand. Silt Content. Zero silt. Minimum permissible silt content is 3%. Anything more than 3% is harmful to the concrete durability. We can expect 5 - 20% slit content in medium quality river sand. Over Sized Materials. 0%. Since it is artificially
India Rivers Week 2020 North India Sand Mining Overview Compiled by: Bhim Singh Rawat, Himanshu Thakkar Some alternatives to use of river sand include M-Sand: Manufactured sand and also recycling construction waste, in addition to sustainable use of river sand. The crusher …
In the crusher machine after crushing of stone the product retained known as crushed stone dust. If can be used as a fine aggregate in cement concrete as a replacement of sand it may be replace fully or partially as a percentage of 20%, 40%, 50%, 60%, 80% of gives the higher strength as that of sand gives with the help of suitable admixtures.
Asst. professor, Dept. of civil engg., IFET college of engg., India 3. ABSTRACT The use of quartz sand as replacement for sand is an economical solution for making the concrete resistant to weathering. The paper presents a concrete mix design procedure for partial replacement of sand with quartz sand.
Scarcity of good quality Natural River sand due to depletion of resources and restriction due to environmental consideration has made concrete manufactures to look for suitable alternative fine aggregate. One such alternative is “Manufactured sand”. Though manufactured sand has been in use in concrete manufacturing in India, the percentage of its contribution is still very negligible in
Sand is a granular material composed of finely divided rock and mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt.Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.. The composition of sand varies, depending on the
RoboSand TM is the environment friendly solution that serves as a perfect substitute for the fast depleting and excessively mined river sand, which is so essential for percolating and storing rain water in deep underground pockets and protects the ground water tables.
Makurdi river sand and CGF grading curves shows that both of them belong to zone c of fine aggregate based on . Makurdi river sand and CGF have specific gravity and finesse modulus values of 2.60; 2.54 and 3.16; 2.79, respectively. Figure 1. Particle Size Distribution of CGF, River Sand and Gravel
Jan 20, 2017· M Sand or Manufactured sand is an Eco-friendly & economical alternative for river sand, which has become widely popular for use in all constructional purposes. It is manufactured by crushing huge rocks & boulders to fine sand particles. Three different types of m sand are manufactured which fulfill the Indian Standards set by the BIS.
Oct 01, 2015· The decision was taken so that Bhopal bench’s orders are not contradictory with that of principle bench. Earlier, NGT central zone bench had ordered for stay on river bed sand mining till
Nov 22, 2019· Replacement of River Sand by M Sand Concrete. Dr. M. Kannan. HOD CIVIL-PITS. Paul Imbrish. Dept of CIVIL-PITS. Fantin Jesanth. A. Dept of CIVIL-PITS. Abstract:- Manufactured sand is a term used for aggregate material s less than 4.75mm and which are processed for from crushed rock or gravel. due to booming of construction activities in our country, natural sand resources are …
May 28, 2020· Alcofine and zinc oxide were added to the mixture at 10% and 2% by weight of cement, respectively. Manufactured Sand was used as a partial replacement for river sand at 25%, 50%, 75% and . The compressive strength, split tensile strength and flexural strength of the concrete were determined after standard curing regimes.
Overview of River Sand and River Sand Substitutes • The local construction industry in Hong Kong, like many other places, has been using river sand for many decades. • In fact, the experience of most concrete/mortar producers in Hong Kong is based mainly on the use of river sand. With river sand changed to river
Crusher stone dust can be an economic alternative to the river sand. Crusher stone dust is produced during crushing of stones into aggregates of desired size say 10mm, 20mm etc. These dusts are generally used in making blocks or land filling. It has potential to be used as partial replacement of natural river sand in concrete.
The sand is being tested for different properties like specific gravity, bulk density etc., In accordance with IS:2386-1963. The fine aggregate distribution of the examination or particle size demonstrates that it is near evaluating zone II or IS:383-1970. 3.3.1 RIVER SAND (RS) The natural fine aggregate is the river sand …
Jul 28, 2016· The concept of replacement of natural fine aggregate by quarry dust which is highlighted in the study could boost the consumption of quarry dust generated from quarries. By replacement of quarry dust, the requirement of land fill area can be reduced and can also solve the problem of natural sand scarcity. The availability of sand at low cost as a fine aggregate in concrete is not suitable and
Apr 21, 2021· Reason 2: River sand mining causes tailings. In the process of mining river sand, it often produces a large amount of tailings which is not used reasonably. Especially in small mines, the tailings are piled up at random, occupying land and polluting the environment. Reason 3: …
The results of mix design indicate that crushed sand can also make as good a concrete as that made of natural sand.The compressive strength obtained is same as of normal mixes.In fact use of crushed sand will become inevitable in near future because of dwindling sources of natural sand.
Mar 01, 2017· In that from 3 different crusher the crush sand is use i.e. we have to made 3 blocks of each, And start from 0% then increment of 10% is carry out such that up to replacement of natural sand with artificial sand. it means that we have to prepare 99 block for …
Concrete of M25 grade was designed for a w/c ratio of 0.48 for the replacement of 10% coarse aggregate with recycled coarse aggregate and replacement of 50, 60 and 70% of fine aggregate (sand
Aug 10, 2020· Bring river sand for plastic brick. IS2386 (Part- I) The more you collect the more plastic you will divert from the landfill or clean up out of the environment. 2.2 Fixing the Proportion of Sand and Plastic For the fabrication of plastic sand bricks, plastic and sand are …
Nov 10, 2014· Artificial Sand Making Machines, Jaw Crushers, Cone Crushers, Special VSI Crusher, Plaster Sand Making Machines, Manufacturer, Supplier, Exporter, India
Aug 20, 2014· The percentage of copper slag used for replacement of river sand are 0, 25, 50 and 75 %. Cement sand mortar joint thickness of 10 and 15 mm. Plaster ability of use of copper slag for partial replacement material for river sand. Use of copper slag as replacement material for river sand in cement concrete (0, 25, 50, 75 and 100 %)