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waste resources used in cement production coarse aggregate content CA kg/m 3 and curing time t Days and to nd out if there is a direct relationship between the compressive strength
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Oct 28 2021The test findings revealed the concrete mix made with 10% dolomite quarry waste displayed mechanical strength comparable to the control concrete mix The concrete compressive strength and elastic modulus decreased slightly by % and % respectively at the 10% substitution of natural river sand
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Specifications for coarse aggregate are included in IS physical properties have been determined as per IS coarse aggregate is free from clayey matter silt and organic impurities etc The coarse aggregate is also tested for specific gravity and it is Fineness modulus of coarse aggregate is
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The aggregate percentage % was divided into % coarse aggregate crushed lime stone and % fine aggregate based on the optimization of packing density of normal weight fine and coarse aggregates used for the control mix The target cube compressive strength was 50 MPa 7000 psi and total slump flow was 500 mm 20 in spread
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limestone quarries The concrete are made using varying contents of lateritic and lime stone filler as fine aggregate The quantity of laterite is varied from 0% to 100% against lime stone filler at intervals of 25% Samples of concrete and cylinders are made in three different grades namely M15 M20 and M25 It was found that water/cement ratio produced higher compressive
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Key points • Aggregate is a term for any particulate material It includes gravel crushed stone sand slag recycled concrete and geosynthetic aggregates Aggregate may be natural manufactured or recycled • Aggregates make up some 60 80% of the concrete mix They provide compressive strength and bulk to concrete
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pressive strength increased considerably with ceramic coarse aggregates over the control or normal concrete the more the percentage of the gravel size materials are replaced by the ceramics Figs 5 and 6 show the same graphs but with the size in the ordinate axis compressive strength/compressive strength for normal concrete Split tensile
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COARSE AGGREGATE Coarse Aggregate is the strongest and least porous component in concrete It reduces drying shrinkage and other dimensional changes due to moisture For optimum compressive strength with high cement and lower water cement ratio size of coarse aggregate must be used FINE AGGREGATE
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Figure 2 Recycled Coarse Aggregate Total 75 8 x 4 Cylinders are cast for this research where fifteen are used for tensile strength test Using recycled coarse aggregate with fresh aggregate in several proportions cylinders are performed for compressive and tensile strength of concrete Five categories fresh % 5% % 10% of
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While investigating the strength properties of E waste plastic concrete Needhidasan et al studied the effect of shredded E waste on concrete performance The replacement ratios of plastic waste ranged from 0 to 20% by volume of coarse aggregate It was examined that the decline in compressive strength CS and flexural strength FS occurs with the rise of E waste but the tensile strength
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From the results show that compressive strength of concrete with quarry dust as aggregates is the highest with MPa with density kg/m 3 This show ceramic waste and quarry dust can be alternative aggregate for comparable properties Access through your institution Add to Cart
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Using recycled coarse aggregate RCA instead of natural coarse aggregate NCA to produce recycled coarse aggregate concrete RAC can alleviate the environmental problems caused by the demolition of buildings and reduce the dependence on natural resources In order to improve the inherent defects such as low compressive strength and elastic modulus of RAC silica fume SF was used to
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The lower density of concrete with plastic aggregates can be explained by the lower specific gravity of waste plastic Islam et al 2024 Rahmani et al 2024 Saikia and Brito 2024 Ferreira et al 2024 Compressive strength of concrete The 28 day compressive strength of investigated concrete specimens were presented in Figure 2 It was
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The potential of recycled ceramic waste as a substitute for coarse aggregates in concrete has been investigated The recycle ceramic waste as aggregate was used Concrete mixes with a 28 days characteristic strength of 20 MPa had prepared using water/cement ratio of and The strength development of the concrete mixes containing
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% of quarry dust considered for laboratory analysis in Slump test water absorption test and compressive strength of the hardened concrete admixture After 7 days of curing at maximum load N/mm2 was recorded for the control specimen as compressive strength while the cube with 80 % dust recorded N/mm2 at maximum load as average
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This paper analyzed the cube compressive strength of concrete containing recycled aggregate as part of coarse aggregates and rubber particles as part of fine aggregate simultaneously The effect of content of both aggregates on concrete compressive strength was studied 25 sets of samples were made with a constant water/cement ratio of
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Lawrancepur near Attock was used as fine aggregates The coarse aggregates were supplied from Margallah hills crushers The finess modulus of sand was verified to ASTM C136/C136M 19 [22] while the water absorption and specific gravity were according to ASTM C128 15 [23] The specific gravity of coarse aggregates was as per recommendations of ASTM
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by replacing fine and coarse aggregate with quarry dust and recycled aggregate in percentages varying from 0% 10% 20% 30% 40% and 50% by weight organized as A1 A2 A3 A4 A5 A6 respectively The test results obtained from fresh and hardened concrete tests shows clearly that more than 40% replacement causes decrease in strength and workability of concrete hence the percentage of mix
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With a circular economy in the spotlight wood waste has emerged as an important secondary raw material Bearing this in mind a comprehensive experimental study was carried out to evaluate the feasibility of using concrete compositions containing wood chips and sawdust for structural and non structural building applications First the mineral and wood aggregates used in the composite design
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The fine aggregate used in this study is Quarry rock dust a by product of stone crusher industry was procured from a local stone crusher Kandra Gudur AP India As a fine aggregate quarry dust provides volume to the mix It imparts workability homogeneity and uniformity to the mortar/concrete mix The sodium hydroxide is in flakes and pellets
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The comparable strength property was obtained for an aggregate made of % quarry dust and % activated fly ash Hence the aggregates with this proportion were used to prepare the concrete specimens The concrete was cast by varying the coarse aggregate replacement ratio of 0% 25% 50% 75% and 100% A few specimens were tested without
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coarse rubber chips in concrete lowered the compressive strength Objectives • Performance evaluation of waste tyre and tube rubber as a partial replacement for fine and coarse aggregates in cement concrete • Recommendations use of scrap rubber as a partial replacement for stone aggregate in Civil engineering applications Methodology
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The compressive strength of plastic based lightweight concrete decrease significantly due to replacement of high compressive strength conventional CA and FA with plastic aggregates For instance 62% to 82% reduction in compressive strength was noticed by replacing 15% to 80% of CA with plastic EPS high density polyethylene HDPE PET polyurethane—PUR foam and ethylene vinyl acetate
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Table Compressive strength of M20 concrete in 28 Days due to temperature effect Fine aggregate Sand Quarry dust Compressive strength MPa % of reduction in strength compared with control concrete Normal temperature After heated to 100°C 100 0 90 10 80 20
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compressive load The compressive strength of concrete was determined using 150mm concrete cubes The concrete was made by replacing 10 15 20% of the coarse aggregate by recycling aggregate and Coconut shells Also concrete cubes without RA and CS were cast in comparison Compressive strength is often measured on a universal testing machine
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quarry conforming to IS 383 1970 Water Compressive strength with and without E waste and plastic waste as aggregates was observed which exhibits a good strength gain [1] P Krishna Prasanna et al 2024 have studied about E Waste have been used as partially replacement to the coarse aggregate They have made specimens by utilizing E Waste particles as coarse aggregate in concrete with
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However these mixes gave characteristic strengths of /mm 2 /mm 2 and /mm 2 respectively equivalent to grade 15 25 and 35 respectively
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C attained optimum compressive strength of /mm 2 With all these research works on laterized concrete no known attempt has been made to evaluate the effect of different coarse aggregate particle sizes on workability and compressive strength of laterized concrete as in the case of normal concrete However it is well known that coarse
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The concrete will have high compressive strength when using quarry dust in concrete the compressive strength also increases We have already started using quarry dust in our construction process such as sand beds Glass Particles The crushed glass particles may be used in concrete partially instead of granite rock
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Keywords Aggregate Quarry Waste Compressive Strength Flexural Strength Unit Weight 1 INTRODUCTION Concrete is one of the most used building materials The boom in construction industry leads to the exploitation of natural resources like river sand and gravel since these are the main source of raw materials for concrete production The onset of shortage and increasing cost of construction
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