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recycle aggregate increase water require in concrete mix

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  • (PDF) Effects of Recycled Aggregate on Concrete Mix and ...

    Compressive strength decreased with the increase in the recycled aggregate content, and a concrete mix with 40% recycled aggregate exhibited the best strength. ... the amount of water required …

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  • Effects of Recycled Aggregate on Concrete Mix and Exposure ...

    Effects of Recycled Aggregate on Concrete Mix and Exposure to Chloride. Download. Related Papers. Utilization of Six Sigma in Quality Improvement of Recycled Aggregates Concrete. By Moetaz El-Hawary. Towards Better Understanding of Concrete Containing Recycled Concrete Aggregate.

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  • Using Recycled Concrete Aggregate | Specify Concrete

    Effects of Recycled Aggregate on Concrete Mix and Exposure ...

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  • Effects of Recycled Aggregate on Concrete Mix and Exposure ...

    The authors concluded that the amount of recycled aggregate in the concrete mix had a low effect on initial slump for the mixes containing recycled aggregate in the SSD condition, while the mixes containing a large amount of AD and OD recycled aggregate would require a large amount of water, which resulted in high initial slump .

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  • Concrete manufacture with un-graded recycled aggregates

    concrete mix increases with the increase of water content and the slump increases. The average slump was 50mm although the water cement ratios varied, 0.55 for plain concrete, 0.6 for glass concrete and 0.8 for concrete with demolition waste. Figure 3 illustrates the mix …

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  • (PDF) Mix Design of Recycled Aggregate Concrete Using ...

    This paper is devoted to the studies of material and mechanical properties of recycled aggregate concrete using packing density method. This paper considers mix of two different aggregate sizes of ...

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  • The Use of Recycled Material in Concrete - UKDiss.com

    The mix design shows the ratio and amount of aggregates and cement as well as the volume of water required for a mix of 0.2m 3 of C20 concrete. Table 10 and Table 11 show the volume of materials used in the second batch of mixes which contains 50% O.P.C and 50% GGBS which gives the volume in Kilograms of materials needed for all constituents of ...

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  • Effect of Recycled Coarse Aggregate on Concrete Properties ...

    The replacement of recycled aggregate on concrete will decrease the characteristic Strength. In the context of Batch 1, the characteristic Strength for 0% was 29.58 MPa, 35% Recycled Aggregate was 27.27 MPa, 50%. Recycled Aggregate was 25.27 MPa and 65% Recycled Aggregate was 23.08 MPa.

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  • A Report on the Use of Recycled Aggregates in Low Grade ...

    The large absorption value of the recycled aggregates could increase the amount of water for concrete mixing. Also, longer time would be needed for the mixing as more water would have to be added when recycled aggregates were used for concrete production. The actual water/cement ratio of the mix may not be accurately

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  • Using Recycled Concrete Aggregate | Specify Concrete

    However, using a recycled aggregate of more than 65% can impact the mix's durability significantly, reducing its physical properties tenfold. The optimum amount blended in with the concrete should be 35%. Some experiments have shown that the recycled aggregate is durable, no doubt, but not as sturdy as natural coarse aggregate.

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  • (PDF) Effects of Recycled Aggregate on Concrete Mix and ...

    Effects of Recycled Aggregate on Concrete Mix and Exposure to Chloride. Download. Related Papers. Utilization of Six Sigma in Quality Improvement of Recycled Aggregates Concrete. By Moetaz El-Hawary. Towards Better Understanding of Concrete Containing Recycled Concrete Aggregate.

    Read More
  • Influence of effective mixing water in recycled concrete ...

    An improved mixing methodology for the recycled concrete manufacturing has been recommended. • Recycled concrete needs a minimal time, over 12 min, to get an adequate mix.. An increase of total water in recycled concrete does not result in a …

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  • Mix Design and Properties of Recycled Aggregate Concretes ...

    At fresh state, the mix design of concrete with recycled aggregates requires an additional quantity of water to obtain a similar workability as a concrete formulated with natural aggregates (Hansen and Boegh 1986). Such a modification may obviously affect the mechanical characteristics of recycled aggregates concrete.

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  • Recycled Aggregates - Portland Cement Association

    Recycled Aggregate Characteristics. The crushing characteristics of hardened concrete are similar to those of natural rock and are not significantly affected by the grade or quality of the original concrete. Recycled concrete aggregates produced from all but the poorest quality original concrete can be expected to pass the same tests required ...

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  • Use Of Recycled Aggregate In Concrete – IJERT

    show that the compressive and tensile strengths values of the recycled concrete aggregate increase as the recycled aggregate and the silica fume contents increase. The study also indicates that in order to accommodate 50% of recycled aggregate in structural concrete, the mix needs to incorporate 5% of silica fume.

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  • The combined effect of using recycled coarse aggregate and ...

    The reuse of materials from destroyed structures as recycled aggregate for concrete has become an important issue, especially in Iraq's Mosul City following the war of 2017. Many water types which are unacceptable for drinking, such as the well water available in Mosul, may be used in concrete, avoiding the need to use precious potable water. In this study, the effects of non-potable …

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  • Performance of Pervious Concrete with Recycled Concrete ...

    Methodology. Recycled concrete aggregates are generally more porous than the primary coarse aggregates. The main property of pervious concrete is its permeability, so the part of fine aggregate can be reduced and the part of natural aggregate can be replaced with recycled concrete aggregate to enhance permeability without much affecting the strength of the concrete.

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