Fine Aggregate from 0%, 10%, 20%, 30% and 40%. The grade of the concrete here is M-25 and M-30 grade. It has been used as a replacement of fine aggregates in many literature works but this paper presents the feasibility of the substitution of marble waste for cement to achieve economy and environment saving. Slump Test was carried

Get Pricefor the targeted compressive strength of 34 MPa at 28 days. The detailed of mix proportions. We were cast using the RA and NA with different sizes of 10 mm and 20 mm. The 50%, 75% and 100 % of recycled aggregate was used in the mix as a coarse aggregate for the recycled aggregate concrete. Based on mix design by IS method, the

Get PriceCompressive Strength Study on the Freeze-thaw Resistance of Recycled Aggregate Concrete Members. ... compressive and flexural strength for both M20 and M30 grade of concrete. Also there is a very little change in 28 days Also there is a very little change in 28 days compressive strength with all accelerators for both M20 and M30 grade of ...

Get PriceRecycled Aggregate Concrete Mix: Using the mix proportions recycled aggregate concrete of grade M 20, M 30, M 40 and M 50 M 60 and M 70 mixes as given in table 4, the mixes were prepared and tested on fresh and hardened properties of concrete. Results are tabulated below. 7.1 Slump Test Showed a slump of 75-100mm for all the six mixes

Get PriceThe compressive strength of recycled concrete depend upon w/c ratio. At lower w/c ratios, the compressive strength of recycled concrete is much lower than that of normal concrete and also higher w/c ratio give similar strength of conventional concrete. III. Year: AprilRECYCLED AGGREGATE CONCRETE, A SUSTAINABLE

Get PriceThe states that do use recycled concrete aggregate (RCA) in new concrete report that concrete with RCA performs equal to concrete with natural aggregates. Most agencies specify using the material directly in the project that is being reconstructed. Recycling of concrete is a relatively simple process.

Get PriceM30 grade of concrete. The fresh properties of SCC were determined . The strength behaviour, flexural behavior, split tensile strength,modulus of elasticity and shear strength behaviour of SCC are studied. The compressive strength, flexural strength and split tensile strength was measured at the ages of 7, 28, and 56 days.

Get PriceMar 18, 2018· Strength of concrete depends on many factors.They are grade of cement, water cement ratio,grading of coarse aggregate. If grade of cement is more like 53 grade,then desired compressive strength is achieved as earlier.Coarse aggregate should be well graded then only voids are reduced and density will be increase.Water cement ratio is very important factor, if we use higher water cement .

Concrete compressive strength for general construction varies from 15 MPa (2200 psi) to 30 MPa (4400 psi) and higher in commercial and industrial structures. Compressive strength of concrete depends on many factors such as water-cement ratio, cement strength, quality of concrete material, and quality control during production of concrete etc.

Get PriceApr 18, 2019· Concrete mix design calculation is all about finding perfect proportions of Cement, Sand and Aggregate to produce a good concrete to achieve its target strength. Here we described the full procedure of concrete mix design calculation and formula with ratio for M40 and M60 grade of concrete as per IS Codes and MORTH.

Get Priceindicated that it is possible to use recycled aggregates in unbound road base and low-grade concrete. This study is the follow-up of the desk study to investigate the use of recycled aggregates in low-grade concrete through tests on trial mixes prepared at the laboratories. The physical

Get PriceMay 18, 2018· Compressive Strength of concrete is defined as the Characteristic strength of 150mm size concrete cubes @28 days. Compressive strength of Concrete and its importance:- As we all know that concrete is a mixture of sand, cement, and aggregate .

Get PriceAbstract: The purpose of this paper is to investigate the strength parameters of concrete manufactured using natural and recycled Guanapo coarse and fine aggregates and to determine by analysis any correlations between their compressive strength and splitting tensile strength testing as conducted according to ASTM C39 and ASTM C496 respectively.

Get Pricecompressive strength at different percentage replacement of recycled aggregate for M20 and M30 mixes and compared with conventional concrete made of natural aggregate. Test results indicate that strength characteristics are comparable to the conventional concrete. Index Terms— recycled aggregate, natural aggregate, compressive strength.

Get PriceAs compared M 30 grade of concrete the strength reduction in M 40 grade of concrete is more as per results. 5 Conclusion- Use of recycled aggregate up to 30% does not affect the functional requirements of the structure as per the findings of the test results.

Get PriceMay 10, 2018· To achieve Target Mean Strength of Recycled Aggregate Concrete of grade M20 and M30 by replacing aggregates with Recycled Aggregates for .

Get PriceFACTORS TO BE CONSIDERED FOR MIX DESIGN The grade designation giving the characteristic strength requirement of concrete. The type of cement influences the rate of development of compressive strength of concrete. Maximum nominal size of aggregates to be used in concrete may be as large as possible within the limits prescribed by IS 456:2000.

Get PriceThis paper investigates the effect of recycled gravel obtained from low (Gl) or medium (Gm) concrete grade on fresh property of concrete (slump), mechanical properties (compressive-splitting tensile strength) and mass transport properties (ISAT-sorptivity) of concrete containing dolomite as a natural coarse aggregate.

Get Price– Recycled concrete aggregate (slab-on-grade) • Overall: ... Compressive Strength [psi} Reclaimed Aggregate Replacement Rate Mixed Demolition RCA – 28 Day Compression . 6500. 7000. ... Construction and Demolition Waste Used as Recycled Aggregates in Concrete: Solutions for Increasing the Marketability of Recycled Aggregate Concrete ...

Get PriceWith constant research and development in the field of cement technology and its manufacturing process,a M20 mix of "1:1.5:3″(by volume) would be too rich,over engineered and uneconomical (~7.5 bags of cement per cum) and will ultimately result into a M30 concrete and above, the reason being latest generation of 53 grade OPC cement is ultimately giving a strength of 65 to 70 MPa at 28days.

Get Priceabsorption ratio is higher than natural aggregate concrete due to porosity of recycled aggregate. Compressive strength, Split tensile strength, Modulus of Elasticity was studied. The specimens were tested for different grades M20, M 25, M30 for both recycled aggregate concrete and natural aggregate concrete.

Get Pricethan that of corresponding recycled aggregate concrete. The results of the study showed that recycled concrete aggregate can potentially replace completely natural aggregate in the production of both non-structural and structural concrete. Keywords: compressive strength, coarse aggregate, concrete, natural aggregate, recycled concrete aggregate.

Get Pricecompressive strength with incorporation of fine recycled aggregates made from crushed concrete up to about 28 days, however the relative strength increased after this period; this was attributed to additional cementing action of unhydrated cement in the crushed concrete. Evangelista and de Brito [3] concluded that the compressive strength

Get PriceThe limit of compressive strength of the cement concrete depends on both, the strength of the matrix and the particle tensile strength of the aggregate. The strength of the concrete is usually related to the cement content and water to cement ratio. However, in this study the crumb rubber is partially replaced with fine aggregate and test the ...

Get PriceStrength and Durability Study on Recycled Aggregate Concrete Using Glass Powder Priscilla M#1, Asst Prof. Pushparaj A Naik*2 ... DESIGN MIX FOR M30 GRADE CONCRETE To calculate the compressive strength of ... A. Test for Compressive strength of concrete cubes: (CTM) having capacity of 2ton was used. In this test

Get PriceMarinez-Lage et al. reported the decreases in compressive strength up to 13% and 23% in recycled concrete with 50% and replacements of mixed recycled aggregates. Mas et al. [35] reported the 13%–39% reduction of compressive strength in 40% substitution.

Get PriceMix design M30 Grade designed as per IS 10262:2009 & IS 456:2000. For pumpable concrete these values should be reduced up to 10%. Therefore, volume of coarse aggregate =0.64 x 0.9 =0.576. Volume of fine aggregate content = 1 – 0.576= 0.424.

Concrete with compressive strength more than 55 MPa is known as high strength concrete. It is used in the construction of bridges, dams. etc., High strength concrete is produced by adding normal ...

Get PriceAug 02, 2017· Example Procedure Calculation for M20, M25, M30 Concrete Concrete mix design is required to achieve target strength in structures. Concrete Mix design of M20, M25, M30 grade of concrete can be calculated from example below.

Get PriceOn the basis of test data of the study, CRRI has suggested the following relation between flexural strength and compressive strength of concrete: y = 11 x – 3.4 . where y is the compressive strength of concrete in MPa and x its flexural strength. This relation depends on the size of coarse aggregate.

Get PriceTo explore more benefits of flyash in construction industry, a study has conducted on strength characteristics of M30 grade concrete using manufactured flyash coarse aggregate as a partial replacement of natural granite coarse aggregate.

Get PriceBond strength of concrete containing crushed concrete aggregate ... Jan 5, 2013 ... The strength grades of concrete used are M20, M25 and M30. The variation ... Recycling is process of value addition of material that is otherwise considered as waste. ... Cube compressive strength of NCA control concrete mix. More details » Get Price

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