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2019-12-22 Water/cement ratio, cement, sand, water were kept constant for each mix ratio while only coarse aggregate sources were chosen as variable. Due to change in aggregate type only, variation in 28 days target compressive strength is found up to 47%. Sample C, D and E showed relatively higher 28 days compressive strength compared to Sample A and B.

Moreaggregate on the compressive strength of concrete have been investigated (Meddah, Zitouni, and Belâabes 2010). Three types of coarse aggregates were mixed in four different

More2020-5-15 aggregate used. While, Walker and Bloem (2007) attest that the type of coarse aggregate used results in a decrease in the compressive strength of concrete. Ruiz (2006) on the other hand, found that the compressive strength of concrete increases when the content of the coarse aggregate increases until a critical volume is reached.

More2020-5-5 degrees of saturation increased, the compressive strength fell. However, at nearly saturated condition, an increase in compressive strength can be found [16]. M. Nishat (2016), studied the relation between strength coarse aggregate and compressive strength of concrete and, states that the stronger and cleaner the aggregates, the better

More2019-11-10 Fig. 3 shows the cube compressive strength of the control mix (Mix A) and RAC (Mix B) with 70% incorporation of coarse recycled aggregate under wet and dry curing conditions at 11, 28, 28, 42 and 90 days. According to the experimental results, the cube compressive strength of the control mix and RAC under wet curing conditions was in the range ...

More2013-3-1 Rahal indicted that the 28-day cube and cylinder compressive strength of RAC was about 10% lower than that of natural aggregate concrete prepared with similar mix proportions. They also showed the development trends of compressive, shear strength and the strain at peak stress of RAC were similar to those of natural aggregate concrete (NAC).

MoreAbstract: In order to study prism compressive strength of recycled coarse aggregates-filled concrete, recycled coarse aggregates of particle size for 40-80mm were made from abandoned brick and concrete blocks. 4 groups of recycled coarse aggregates-filled concrete prism objects were made, and the compressive strength of the specimens were done.

MoreEffects of Coarse Aggregate Size on the Compressive Strength of Concrete. This study investigates the effect of aggregate size on the compressive strength of concrete. Two nominal mixes, that is, 1:2:4 and 1:3:6 were used in the study. Concrete cubes were produced with 6, 10, 12.5, 20 and 25 mm aggregates for the two nominal mixes and they were ...

More2020-8-20 The results for the parameter X 4 (natural coarse aggregate) reveals that low aggregates (less than 200 kg/m 3) decrease the compressive strength of the concrete. By increasing the value of the X 4 and taking the values between 200 and 1000, the compressive strength will increase.

More2020-8-4 between the maximum coarse aggregate size and the compressive strength follows a polynomial with R 2= 1; indicating that the model is reliable. The optimum maximum coarse aggregate size for the best compressive strength of 28 day concrete was therefore found to be 8mm for the water/cement ratio of 0.63. The analysis

More2021-3-19 to aggregate, the bond between the mortar the coarse aggregate and size, grading, surface texture, shape, strength of aggregate particle (Haach et al.2011). Compressive strength defines the load carrying capacity of structure on its surface without any crack or

More2015-11-16 distribution of both fine and coarse aggregate on compressive strength are analyzed in this study. Six different sizes of coarse aggregates are used while developing a mix design. The sizes of coarse aggregate are 19 mm, 12.5 mm, 9.5 mm, 6.35 mm 4.75 mm, 2.36 mm and 1.18 mm. Mixtures of local sand and Sylhet ...

More2019-12-1 development of compressive strength begins to experience stabilization. Concrete made using laterite soil as a substitute for coarse aggregate develops a lower / smaller compressive strength when compared to normal / control concrete which is made without substitute material for laterite soil.

More2020-1-22 Thus the compressive strength of concrete is usually greater than the compressive strength of its comparable mortar. In flexure, pre-cracking causes fracture of the concrete specimen and the only properties of the coarse aggregate which influence the flexural strength are those which appear to determine the aggregate-cement bond.

More2019-7-1 coarse aggregate up to 24% in concrete does not affect the compressive strength of the concrete. Addition of the more than 24% of recycled concrete aggregate reduces the compressive strength of the concrete. Table 3. Compressive strength results of cube tests Mix ratio Compressive Strength (N/mm2) 7 Days 14 Days 21 Days 28 Days

More2020-5-15 aggregate used. While, Walker and Bloem (2007) attest that the type of coarse aggregate used results in a decrease in the compressive strength of concrete. Ruiz (2006) on the other hand, found that the compressive strength of concrete increases when the content of the coarse aggregate increases until a critical volume is reached.

MoreEffects of Coarse Aggregate Size on the Compressive Strength of Concrete. This study investigates the effect of aggregate size on the compressive strength of concrete. Two nominal mixes, that is, 1:2:4 and 1:3:6 were used in the study. Concrete cubes were produced with 6, 10, 12.5, 20 and 25 mm aggregates for the two nominal mixes and they were ...

More2010-4-1 The effect of coarse aggregate content on the compressive strength of concrete with and without chemical admixture is illustrated in Fig. 10. When no chemical admixtures were added, increasing the coarse aggregate content from 44% to 47% has led to an increase of the compressive strength.

More2020-8-12 compressive strength, density, and workability. The results reveal that the effect of elongated aggregate is more than flanky aggregate on the characteristic compressive strength of concrete. Himanshu Kumar et. al (2015) [7] this study was performed to evaluate the effect of the flaky and normal

More2021-6-3 The compressive strength of parent rock does not exactly indicate the strength of aggregates in concrete. For this reason assessment of strength of the aggregates are made by using a sample bulk aggregates in standardized manner. The test conducted to know the compressive strength of aggregate is known as aggregates crushing value test.

MoreCompressive Strength Of Coarse Aggregate. They give 10-20 more compressive strength due to development of stronger aggregate-mortar bond.Sieve analysis of 20 mm coarse aggregate research image.Seen in the unit weight, stress-strain behavior as well as the moe results.Sreenivas et al.7 and shohana 32 revealed that the compressive strength influences the unit weight of concrete.

More2020-1-22 Thus the compressive strength of concrete is usually greater than the compressive strength of its comparable mortar. In flexure, pre-cracking causes fracture of the concrete specimen and the only properties of the coarse aggregate which influence the flexural strength are those which appear to determine the aggregate-cement bond.

More2020-5-15 aggregate used. While, Walker and Bloem (2007) attest that the type of coarse aggregate used results in a decrease in the compressive strength of concrete. Ruiz (2006) on the other hand, found that the compressive strength of concrete increases when the content of the coarse aggregate increases until a critical volume is reached.

More2014-1-8 compressive strength of concrete. Ruiz (1966) found that the compressive strength of concrete increases with an increase in coarse aggregate content until a critical volume is reached, while Bayasi and Zhou (1993) found little correlation between compressive strength and coarse aggregate

More2019-12-1 development of compressive strength begins to experience stabilization. Concrete made using laterite soil as a substitute for coarse aggregate develops a lower / smaller compressive strength when compared to normal / control concrete which is made without substitute material for laterite soil.

MoreStrength of coarse aggregates is difficult to measure. While we talk about the strength of coarse aggregates it refers to the crushing strength of the aggregate itself. However, the required information on strength of coarse aggregates can be obtained from indirect tests: crushing strength of prepared rock samples, crushed value of bulk ...

More2017-9-26 separation of the coarse aggregate. This phenomenon will affect concrete compressive strength. The concrete has hardened more quickly in a short time. Mostly types of cement to reach ultimate strength at about 70% -80% after the age of 28 days [2]. The combined aggregate 10mm and 5 mm size can achieve compressive strength up to

MoreIn Table 2, the linear model for 9.5 mm aggregate concrete showed a R2 value of 0.1270, which indicates that 12.7% of the systematic variations in the compressive strength of the concrete is accounted for by the independent variables (cement, fine aggregate, coarse aggregate, w/c ratios and curing duration).

More2018-5-18 Compressive strength gives an idea of the overall strength and above-mentioned factors. Through conducting this test, one can easily judge the concrete strength psi and quality of concrete produced. Factors affecting compressive strength of concrete:-Coarse aggregate:-

More2018-12-27 compressive strength. There are many variables that influence recycled concrete compressive strength (grading curves, maximum size fraction, natural aggregate source, cement class, possible admixtures, etc.) which have not been taken into account. In fact, it is really difficult to take all these variables into account.

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