A coarse aggregate and a cement addition in structural concrete design b.And valorising waste as an alternative source of raw materials, is a priority target for sustainable growth in developed societies.Materials performance recycled concrete a b s t r a c t.
As the mix prepared contains e-waste and coarse aggregate, the corresponding weights per meter cubic of concrete for different proportions are represented in table 2.Proportions of materials for different combinations the coarse aggregate used in this study is the combination of e-waste and the coarse aggregate.
Results revealed that with 40 replacement of conventional coarse aggregate by coconut shell, 7 days compressive strength of concrete decreased by 62.6 whereas decrease in 28 days compressive strength was only 21.40 replacement makes the concrete lighter by 7.
Use of waste in concrete research efforts has been done to match societys need for safe and economic disposal of wastematerials.The use of waste materials saves natural resources and dumping spaces, and helps to maintain aclean environment.The current concrete construction practice is thought unsustainable because, not only it isconsuming.
Aggregate coarse aggregate.Concrete is the mixture of various materials coarse aggregate, fine aggregate, cement water, each of them is mixed in various proportions to achieve specific strength.Cement being the most important material plays an important role in the manufacturing of concrete.Waste glass in the form of fine.
Building and emironment.181 190 pergamon press ltd.Printed in great britain i i i i360 1323,80,0901 0181 s02.Ixio alternative materials for concrete mersey silt as fine aggregate p.Banfill the possible use of mersey silt as a fine aggregate for concrete.
Alternative aggregate materials for concrete.It aimed to utilize the mangima stone as alternative coarse aggregates in the concrete.The objectives included the following 1 to determine the physical properties of mangima stone 2 to utilize the mangima stone wastes as alternative coarse aggregates in concrete and 3 to determine the.
Preparation of concrete, crushed coarse aggregate.Cai caii and coconut shell coarse aggregate.Csa coarse aggregate of type i- crushed hard basalt chips of maximum size 10 mm were used in the concrete mixes.Coarse aggregate of type ii- crushed hard basalt chips of maximum size 20 mm were used in the concrete mixes.
Fine aggregate selection plays vital role in concrete performance and its cost.Lately the need for replacing sand with alternative materials have picked governing serious environmental impact of dredging sand from river bed, also there is huge demand and supply gap in major cities.
Natural coarse aggregate replacement 10, 15 and 20 by pelletized cut rubber and with three concrete mixes 10, 15 and 20 with the surface modified shredded rubber tire particles.Related literature waste tires generated in the new england states are for the most part managed within new england region.
Pelletized cut rubber an alternative coarse aggregate for concrete mixture research about the characteristics of the main materials b discussion and more info sintered calcined clay as an alternative coarse aggregate.Research on coarse aggregate alternatives the alternative materials for coarse aggregate in concrete the cement commonly used is.
It is advisable to not replace gravels with other consituents as possible as you can.Ofcourse coarse aggregates can be replaced with broken concrete debris however we are compromising the quality of resultant concrete upto some level that doesnt.
This paper present review on usage of alternate materials in concrete which includes upcoming changes in concrete technology that paves the way to utilise some of the alternative materials that.
The manufacture of coarse aggregate by crushing rock ballast causes environmental pollution.Now a day there is a scarcity of coarse aggregate due to increase in cost and infrastructural growth.This mainly directed towards exploring the possibilities of making effective use of alternative materials.The rubber aggregates.
Brick aggregate concrete also performs well or even better than natural aggregate concrete under high temperature fouad et al.All these studies justified the use of crushed brick as an alternative source of coarse aggregate in concrete.However, there is hardly any literature on use of brick aggregate in pervious concrete.
The test results indicated that recycled coarse aggregate concrete rac showed a lower performance than crushed stone aggregate concrete cac because of the adhered mortars in ra.However, it was obvious that the addition of nf in rac mixes was much more effective in enhancing the performance of the concretes due to the crack bridging effect.
Successful uses of alternative materials in concrete technology, and in particular the use of recycled concrete rc aggregate as a coarse aggregate fraction in non-structural and structural concrete.Many researchers have dedicated their work to describe the properties of these kinds of aggregate, the minimum requirements for.
Coarse aggregates are any particles greater than 0.19 inch, but generally range between 38 and 1.5 inches in diameter.Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder.Natural gravel and sand are usually dug or dredged from a pit, river, lake, or seabed.
These paper present results of experimental investigations carried out to evaluate effects of replacing aggregate coarse and fine with that of slag on various concrete properties.The basic objective of this study was to identify alternative source of good quality aggregates which is depleting very fast due to the fast pace of construction activities in india.
This paper deals with the possibility of using fresh concrete waste as recycled aggregates in concrete.An experimental program based on two variables proportion of fine aggregates replacement and proportion of coarse aggregates replacement was implemented.The proportions of replacement were 0, 50, and 100 by mass of aggregates.
From the study, one can conclude that, cupola slag can be used as coarse aggregate effectively in structural as well as in plain concrete and suggest such various other alternative materials prove very effective to slowing down of climate changes and preserving natural resources and environment.