2014-1-8 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 content.
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2021-6-15 2.2. Test Specimen Preparation. The concrete mixes with a grade of 40 MPa compressive strength at 28 days were prepared based on 5–10 mm coarse aggregate size, as summarized in Table 3.Before casting, to reduce the water absorption effect on the test results, the coarse aggregates were immersed in water for 24 h, after which their surface water was
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2021-8-9 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.
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2017-8-4 In general, a decrease in the maximum coarse aggregate size may have advantages when it comes to concrete compressive strength: “internal weak planes may be less likely to exist, and the smaller particles reduce stress concentration effects at paste-aggregate interfaces.”1 Also, smaller-sized aggregate having a higher surface area
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2011-6-22 The effect of recycled coarse aggregate on concrete compressive strength was investigated based on the concrete skeleton theory. For this purpose, 30 mix proportions of concrete with target cube compressive strength ranging from 20 to 60 MPa were cast with normal coarse aggregate and recycled coarse aggregate from different strength parent concretes.
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2020-8-20 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.
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2015-4-29 The strength and the stiffness of coarse aggregate directly influence the behavior of hardened concrete. Although in normal concrete, strength is controlled by the paste or by the transition zone between paste and aggregate, the strength of high-performance concrete depends not only on the strength but on the mineralogy of coarse aggregate as well
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increases with an increase in coarse aggregate content until a critical volume is reached, while Bayasi and Zhou (1993) Concrete is a mixture of water, cement, or binder and found little correlation between compressive strength and aggregate (fine and coarse aggregate) and is a commonly coarse aggregate content. used material for construction ...
Read More2021-8-9 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.
Read More2015-4-29 The strength and the stiffness of coarse aggregate directly influence the behavior of hardened concrete. Although in normal concrete, strength is controlled by the paste or by the transition zone between paste and aggregate, the strength of high-performance concrete depends not only on the strength but on the mineralogy of coarse aggregate as well
Read More
2020-11-17 A higher fine aggregate content affected the compressive strength of mixtures with a constant w/c ratio. Although there was not a big difference in the compressive strength of concrete mixtures, there was a slight shift in the increment of strength after
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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.
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2020-8-12 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
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Concrete has a far greater strength than mortar and sandcrete of the same cement: aggregate ratio. This exceeding strength is, most times, found to be triple (or more) that of mortar. Coarse aggregates, which are the interest of this study, make the difference. Three different types of coarse aggregates, with 20mm maximum size, were employed in the investigation, namely;
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2018-5-18 • The compressive strength of control mix is 40.25N/mm2 for 28 days of curing period and having medium workability (slump value lies 50-100 and C.F. is 0.92). • The compressive strength is gradually decreased when adding of 20% and 25% of
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2021-11-30 An optimum compressive strength value of 16.79 N/mm² and 16.71 N/mm² was obtained with the addition 20% and 30% partial replacement
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2020-4-13 Mechanical Properties of Aggregate. Concrete, in general, is a concoction of cement, aggregates and water. Each of these components accounts for a particular purpose or target. However, the liability of imparting strength and durability to concrete rests on aggregates, the coarse ones in particular. This is owing to the fact that aggregates ...
Read Moreincreases with an increase in coarse aggregate content until a critical volume is reached, while Bayasi and Zhou (1993) Concrete is a mixture of water, cement, or binder and found little correlation between compressive strength and aggregate (fine and coarse aggregate) and is a commonly coarse aggregate content. used material for construction ...
Read More2015-4-29 The strength and the stiffness of coarse aggregate directly influence the behavior of hardened concrete. Although in normal concrete, strength is controlled by the paste or by the transition zone between paste and aggregate, the strength of high-performance concrete depends not only on the strength but on the mineralogy of coarse aggregate as well
Read More2021-8-9 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.
Read More2020-11-17 A higher fine aggregate content affected the compressive strength of mixtures with a constant w/c ratio. Although there was not a big difference in the compressive strength of concrete mixtures, there was a slight shift in the increment of strength after
Read More2019-12-22 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.
Read More2021-11-30 An optimum compressive strength value of 16.79 N/mm² and 16.71 N/mm² was obtained with the addition 20% and 30% partial replacement
Read 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
Read MoreConcrete has a far greater strength than mortar and sandcrete of the same cement: aggregate ratio. This exceeding strength is, most times, found to be triple (or more) that of mortar. Coarse aggregates, which are the interest of this study, make the difference. Three different types of coarse aggregates, with 20mm maximum size, were employed in the investigation, namely;
Read More
2017-9-26 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
Read More2016-3-22 The determined compressive strength was compared with the conventional concrete cube’s strength. Of the above percentage mixes, the perfect percentage mix of granite with coarse aggregate is found and can be brought to use. Key words: coarse aggregate, granite waste. INTRODUCTION: Concrete is a composite material
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