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FS is a viable means of producing economical self-compacting concrete SCC by using FS substitution however, further research is needed to develop the optimum FS proportion . The substitution of foundry sand in concrete reduces the voids in concrete and has helped to spread the CSH gel widely in the concrete .Discover More
Most of the states in our country have banned sand quarrying from the river beds, causing a scarcity of natural river sand for the construction sector. Manufacture sand M-sand is one of the alternate solutions to replace the river sand R-sand in concrete. The main aim of the present study is to evaluate the durability parameters of concrete with M-sand when compared to that of concrete ...Discover More
In the present investigation workability, strength and durability of concrete with manufactured sand as replacement to natural sand in proportions of 0, 20, 40, 60 and 100 is studied.Discover More
2019-4-8in concrete production as well as quality control of fine aggregate containing a large amount of silt fines. KeyWords Silt Fine, Fine Aggregate, Concrete, Durability 1. Introduction Sand and stone aggregate is the basic material used for concrete mixtures. A2009 report by Taiwans Bureau of Mines declares that Taiwan consumed 75 million tonsDiscover More
In this paper, influence of micro-fines on the manufactured sand and influence of manufactured sand containing micro-fines on concrete is studied. Using the MB value of manufactured sand to control the content of micro-fines in manufactured sand. The experimental results show that if MB value is less than 1.0, content of micro-fines is less than 15, concrete keeps a high level of compressive ...Discover More
2020-7-20Considering, the acute shortage of river sand, huge short coming on quality of river sand, high cost, greater impact on road damages and environmental effects, The Construction Industry shall start using the manufactured sand to full extent as alternative, reduce the impacts on environment by not using the river sand.Discover More
2015-4-29of manufactured sand depend upon the source of its raw material, i.e., parent rock. Hence the selection of the quarry is very important to quality fine aggregate. Mahendra R Chitlange et al. 2010 experimentally proved that due to addition of steel fiber to natural sand concrete and manufactured sand concrete there is aDiscover More
2013-3-21The results of sand and mortar testing were used in the development of the subsequent testing phase, examining the effects of manufactured sand properties on concrete water demand utilizing full-scale concrete mixtures. A statistically based water demand model was developed for conventional strength concrete.Discover More
2018-6-27Manufactured Sand. Approaches have been made to Standards Australia to rewrite the Concrete Aggregate specification, AS 2758.1. However, although all major quarrying companies have made significant progress in using manufactured sand, there is little common agreement on which tests might be applied to the product orDiscover More
2020-7-18The net cost of Concrete reduces when FM of sand increases. It reduces by about 6.5 for an increase of FM from 2.0 to 3.0. As the fineness modulus of Sand increases, the CostBenefit Ratio reduce by a very large factor. This is 29 when FM changes from 2.0 to 3.0. That means we can get large advantage by using concrete having Coarse Sand.Discover More
2017-4-7DOI 10.21884IJMTER2016.3006.DCKF9 44 EXPERIMENTAL INVESTIGANTION ON DURABILITY PARAMETERS OF CONCRETE USING GGBS AND ROBO SAND Bheemanna Nalvadgi1, Dr.Baswaraj Gadgay2 and Dr.Shreenivas Reddy S3 1,2,3 Dept. of Construction Technology, VTU PG Centre Kalaburagi AbstractConcrete performs a very major role in construction field.This presentDiscover More
2017-5-6using conventional natural and manufactured ne aggregates, including granulated slag, it is possible to produce concrete with good workability and compressive strengths in the range of 130160 MPa without the need for complex mixing or curing regimes. Although research on different RS replacements, such as manufactured sand RS 12,Discover More
2015-6-30water. The only effect noticeable in using sea water for plain concrete mixing is the increased laitance which forms consisting mainly of magnesium hydroxide preoipitaded from the sea water. Limestone which is a calcium and magnesium carbonate may be safely used as aggregate in concrete for these substances are very stable.Discover More
Many researches showed that manufactured sand is a best alternative for natural sand in terms of strength and durability and the concrete mix with 60 replacement has given good durable properties . Hudson, 1997, conducted a study using natural and crushed sand to compare the resistance and characteristics of concrete with high fine material 6 .Discover More
2018-7-9significance of using the manufactured sand for replacing the natural sand in concrete. It includes the literature about mix design, fresh concrete properties, strength, durability aspects, micro structures and the structural behaviour of concrete with the replacement of fine aggregate by manufactured sand. 2.2 QUARRY FINES FROM VARIOUS ROCKSDiscover More
2014-4-4Factors Affecting Workability of Concrete A concrete is said to be workable if it is easily transported, placed, compacted and finished without any segregation. Workability is a property of freshly mixed concrete, and a concrete is a mixture of cement, aggregate, water admixture. Due to this all the properties of concrete, whether in freshDiscover More
Manufactured sand offers viable alternative to natural sand and it is purposely made fine aggregate produced by crushing and screening or further processing. This experimental investigation was performed to evaluate the grading and strength properties of M20 grade of concrete mixes, in which natural sand was replaced with manufactured sand.Discover More
2019-3-31Concrete using FNS as a partial replacement for sand has exhibited improved mechanical properties, such as compressive strength, tensile strength and modulus of elasticity, as compared to those of the control specimens Sakoi et al., 2013. However, full replacement of sand by FNS has reduced strength due toDiscover More
2020-7-19Common river sand is expensive due to excessive cost of transportation from natural sources. Also large-scale depletion of these sources creates environmental problems. As environmental transportation and other constraints make the availability and use of river sand less attractive, a substitute or replacement product for concrete industry needs to be found.Discover More
This research was conducted to establish the effects of fly ash and used foundry sand on strength and durability of concrete. Two series Series 1 and Series 2 of experiments were performed. All concrete mixtures were produced for and at the production plant of an architectural precast concreteDiscover More
2018-3-17of Manufactured sand M-sand has been increasing due to the scarcity of good quality natural river sand. Adams Joe, M. et al . 2013, experimentally investigated the effect of addition of M-sand by replacing river sand in high performance concrete. By replacing 50 of M-sand, gave maximum strength and durability criteria thanDiscover More
2017-6-5concrete incorporating with alccofine and fly ash have higher strength and also alccofine has increased the durability of concrete have reduced the chloride diffusion. The compressive strength achieved by using Alccofine 8 fly ash 20 is 54.89 Mpa at 28 days and 72.97 Mpa at 56 days.Discover More
2020-7-19The process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design. The proportioning of ingredient of concrete is governed by the required performance of concrete in 2 states, namely hellipDiscover More