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Various results obtained from our study are summarised (tabulated) as follows: DISCUSSIONFrom those above results concrete made from natural aggregates has higher compressive strength than the concrete made by using crushed rock aggregates (at same workability of 75 mm) by 9% in case of M15 grade and 6.7% in case of M20 grade . Thus it is evident that to produce the same workable concrete using natural aggregates and crushed rock aggregates the resulting concrete from the natural aggregates ...

Free Chatcompressive strength were 57.5%, 68.1%, 83.7%,and 87.3% respectively. The results of the study indicate that both the density and compressive strength of concrete decreased as the percentage replacement increased but replacement of sand by sawdust produced a higher percentage reduction in compressive strength than in density. Sawdust can potentially be used as aggregate in the

Free ChatThe compressive strength of 28 days by using crushed pavement blocks aggregate showed an increment of nearly 8% when it fully replaced the natural aggregate in concrete

Free ChatFrom those above results concrete made from natural aggregates has higher compressive strength than the concrete made by using crushed rock aggregates (at same workability of 75 mm) by 9% in case of M15 grade and 6.7% in case of M20 grade . Thus it is evident that to produce the same

Free Chat25.81Nmm-2 respectively corresponding to 33%, 20%, 11% and 20% reduction in strength compared to concrete using natural aggregate.. The densities and compressive strengths of natural aggregate concrete were higher than that of corresponding recycled aggregate concrete. The results of the study showed that recycled concrete

Free Chat16/03/2012 Aggregates shape and size has a strong influence on properties of concrete. Rough surface textured particles increase the compressive strength of concrete up to 20-30%, instead of using natural gravels that is obtained from river beds. Rough surface have pores which have ability to form bond or create resistance against the applied load.

Free ChatSpecifically compressive strength ranged from 17-34.2 N/mm2 for the mixes considered. These results compare favourably These results compare favourably with those of conventional concrete.

Free ChatFour grades of concrete made with crushed brick as aggregate were tested to determine their physical and mechanical properties. Nominal compressive strength ranged from 2000 to 5000 psi (13.8 to 34.5 MPa). Test results compared favorably with those for normal weight concrete as

Free Chati. To determine the compressive strength of concrete with gravel and crushed burnt bricks or brick bats as coarse aggregates. ii. To determine the optimum mix ratio. iii. To compare the compressive strength of concrete with gravel and crushed burnt bricks as coarse aggregates. iv. To determine the effect of partial substitution of gravel with crushed burnt

Free ChatCompressive strength of concrete using natural aggregates gravel and crushed rock aggregates-a comparative case study Get Price Using Crushed Clay Brick as Coarse Aggregate in

Free ChatCompressive Strength of Concrete Using Sawdust as Aggregate Daniel Yaw Osei, Emmanuel Nana Jackson Abstract—This paper reports on experimental investigations on the effect of replacing sand with sawdust on the properties of concrete. A concrete mix of 1:2:4 was used as control while sawdust was used to replace 25%, 50%, 75% and 100% of sand by volume. The percentage reduction in density

Free Chatcompressive strength of concrete using quarry dust as fine aggregate and mixing with admixture type E, it was found coarse aggregate (crushed granite) compressive strength of riversand –

Free ChatThis investigation seeks to obtain concrete of enhanced compressive strength using optimal combinations of ground ceramics—for partial replacement of Portland cement; river sand, stone dust, and/or crushed ceramics—for use as fine aggregates; and granite, bush gravel, and coarsely crushed ceramics as coarse aggregates. 2. Materials

Free Chat16/03/2012 Aggregates gradation also have an influence on the compressive strength of concrete. Concrete strength increases when using dense gradation and increasing fines modulus of aggregates. By increasing fines modulus surface area of aggregates goes on increasing. With the increase in surface area more bond surface will be available and due to this stronger bond will be formed and also this

Free ChatCompressive Strength of Concrete Using Recycled Concrete Aggregate as Complete Replacement of Natural Aggregate Daniel Yaw Osei, ... compressive strength, coarse aggregate, concrete, natural aggregate, recycled concrete aggregate. Introduction The growing need for infrastructural development has placed a huge demand on coarse aggregates, which make up about three-quarters of concrete,

Free ChatCompressive strength of hardened concretes made from recycled concrete coarse aggregates was studied as a function Of the compressive strength of original concretes from which the coarse aggregates were derived Also studied were properties of fresh concretes made from recycled aggregates, gradings of crusher products, properties of recycled aggregates, and the amount of old

Free ChatThe compressive strength is quantified for varying percentage and grades of concrete by replacement of sand with quarry dust. 1. Introduction. Quarry dust is a byproduct of the crushing process which is a concentrated material to use as aggregates for concreting purpose, especially as fine aggregates. In quarrying activities, the rock has been ...

Free ChatCompressive Strength Of Crushed Concrete Using As Aggregate. Click Here: Get Latest Price Aggregate on compressive strength of concrete.The preceding section discusses the various literature on the materials and test on concrete.It also discusses relevance of compressive strength of concrete, average compressive strength of concrete with crush granite and quartzite and factors that

Free Chat01/06/2008 Using the same way to classify the material, three categories can be defined based on the concrete mixtures prepared with crushed limestone aggregates in this study: questionable (compressive strength 28 MPa).

Free ChatCompressive strength of concrete using natural aggregates gravel and crushed rock aggregates-a comparative case study Get Price Using Crushed Clay Brick as Coarse Aggregate in

Free ChatAggregates, Concrete Compressive Strength I. INTRODUCTION Concrete is a flexible material to be developed in the application of infrastructure development. The design of the concrete structure requires accuracy at the design and implementation stages by considering the price and strength aspects of the concrete structure which has a high strength but with a low cost. Both of these can be ...

Free Chatcompressive strength of concrete using quarry dust as fine aggregate and mixing with admixture type E, it was found coarse aggregate (crushed granite) compressive strength of riversand –

Free ChatCoarse Aggregates are the main component of concrete and occupy around 45% of the total volume of concrete. Their Properties have a profound effect on the vari

Free ChatCompressive strength of hardened concretes made from recycled concrete coarse aggregates was studied as a function Of the compressive strength of original concretes from which the coarse aggregates were derived Also studied were properties of fresh concretes made from recycled aggregates, gradings of crusher products, properties of recycled aggregates, and the amount of old

Free Chatmade from natural aggregate for normal strength concrete (M20). Flexural strength of the recycled aggregate concrete is almost 85% and 80% of natural aggregate concrete. Amn on.et.al (2002), concrete having a 28 -day compressive strength of 28 MPa was crushed at ages 1, 3 and 28 days to serve as a source of aggregate for new concrete,

Free ChatEffects of using recycled concrete of different qualities as coarse aggregate upon the strength and deformation of concrete are reported. Tests on the aggregates showed that the recycled concrete aggregates have lower specific gravity and higher absorption capacity than the original crushed granite aggregate. The resistance to mechanical action such as impact, crushing and abrasion for the ...

Free Chatworkability decreased with the use of coal bottom ash as a replacement of fine aggregate in concrete. Compressive strength of bottom ash concrete at the curing age of 28 days was increased compared to control concrete. Splitting tensile strength of concrete improved at percentages of replacement of bottom ash. The modulus of elasticity

Free Chatcharacteristics of concrete produced using crushed, granular coconut and palm kernel shells as substitutes for conventional coarse aggregate in gradation of 0%, 25%, 50%, 75% and 100%. It was observed that the compressive strength of the concrete decreased as the percentage of the shells increased in the mixes. However, concrete obtained from coconut shell aggregate exhibited a higher ...

Free Chataggregate 2.73 2.25% Crushed Sand Fine 2.68 3.09% Days 0.0% 0.2% 0.4% 0.6% 0.8% 7 18.99 20.41 21.06 21.37 20.32 14 23.29 ... reduces the compressive strength of concrete by 8.06%. Hence, it can be concluded that, the optimum percentage of plastic fibre is 0.6% by weight of concrete. Plastic fibred ores not affect the workability of concrete. Plastic fibre is a good alternative to conventional ...

Free ChatCompressive strength of concrete using natural aggregates gravel and crushed rock aggregates-a comparative case study Get Price Using Crushed Clay Brick as Coarse Aggregate in

Free Chatof 2160kg/m 3, while compressive strength of crushed granite was 22.01N/mm 2 with an average density of 2300kg/m3 on the 28 day of testing. Concrete made from granite had the highest workability, while concrete made from quartzite aggregate had the highest compressive strength. Densities and compressive strengths of the individual aggregates accounted for the variation in strengths of the ...

Free Chat16/03/2012 Aggregates gradation also have an influence on the compressive strength of concrete. Concrete strength increases when using dense gradation and increasing fines modulus of aggregates. By increasing fines modulus surface area of aggregates goes on increasing. With the increase in surface area more bond surface will be available and due to this stronger bond will be formed and also this

Free ChatCompressive strength of concrete using natural aggregates gravel and crushed rock aggregates-a comparative case study

Free ChatCoarse Aggregates are the main component of concrete and occupy around 45% of the total volume of concrete. Their Properties have a profound effect on the various properties of concrete when wet as well as after hardening. There are many sources in Kashmirwhich have abundant supply of natural aggregates (gravel) cheaply available than machine (jaw crushers) crushed rock aggregates.

Free ChatThe 28-day compressive strengths of 1:3:6, 1:2:4, 1:1 1 / 2 :3, 1:1:2 concrete using recycled concrete aggregates were 12.18 Nmm -2 ,17.14 Nmm -2 , 21.65 Nmm -2 and 25.81Nmm -2 respectively corresponding to 33%, 20%, 11% and 20% reduction in strength compared to concrete using natural aggregate.. The densities and compressive strengths of natural aggregate concrete were higher

Free Chatmade from natural aggregate for normal strength concrete (M20). Flexural strength of the recycled aggregate concrete is almost 85% and 80% of natural aggregate concrete. Amn on.et.al (2002), concrete having a 28 -day compressive strength of 28 MPa was crushed at ages 1, 3 and 28 days to serve as a source of aggregate for new concrete,

Free Chatbasalt or crushed limestone, aggregate sizes of 12 mm ('h in.) or 19 mm (:Y. in.), and coarse aggregate contents with aggregate volume factors (ACI 211.1-91) of0.75 and 0.67. Water-to-cementitious material ratios range from 0.24 to 0.50. Compressive strengths range from 25 MPa (3,670 psi) to 97 MPa (13,970 psi). Compression test results show that high-strength concrete containing basalt ...

Free Chataggregate 2.73 2.25% Crushed Sand Fine 2.68 3.09% Days 0.0% 0.2% 0.4% 0.6% 0.8% 7 18.99 20.41 21.06 21.37 20.32 14 23.29 ... reduces the compressive strength of concrete by 8.06%. Hence, it can be concluded that, the optimum percentage of plastic fibre is 0.6% by weight of concrete. Plastic fibred ores not affect the workability of concrete. Plastic fibre is a good alternative to conventional ...

Free ChatThe 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 Limestone particles may be used in concrete partially instead of granite rock.

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