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Comparison of concrete compressive strength between hand crushed and machine crushed rock aggregates

Jan 26, 2015 There are many sources in Kashmir which have abundant supply of natural aggregates (gravel) cheaply available than machine (jaw crushers) crushed rock aggregates. In our work a comparison of the various properties of concrete made from machinecrushed rock aggregates and natural aggregates (gravel)was done

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  • EXPERIMENTAL STUDY ON STRENGTH OF CONCRETE

    EXPERIMENTAL STUDY ON STRENGTH OF CONCRETE

    of strength characteristics of concrete using crushed pebbles as fine aggregate it is found that there is no increase in compressive strength, flexural strength and tensile strength of concrete when compared with natural sand. Key Words: crushed pebbles, fine aggregate replacement, concrete strength, compressive, tensile, flexural 1

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  • Experimental investigation and comparative machine

    Experimental investigation and comparative machine

    Jan 13, 2021 In this study, the idea of recycling the concrete wastes and reuse of them for reproduction of green concrete has been presented. Thus, we have tried to study mechanical parameters using recycled aggregate concrete. For this purpose, three mix designs including natural, recycled and recycled fiber concrete were tested. Moreover, at the end of the paper, estimation of compressive strength

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  • EXPERIMENTAL STUDY ON THE IMPACT ON STRENGTH

    EXPERIMENTAL STUDY ON THE IMPACT ON STRENGTH

    Concrete is a composite material, where coarse and fine aggregates are filler material and cement paste are binding material. Concrete is composite of sand, gravel, crushed rock, or other aggregate held together by a hardened paste of hydraulic cement and water. The thoroughly mixed

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  • Comparative study on compressive strength of fly ash concrete

    Comparative study on compressive strength of fly ash concrete

    Findings: A comparison is made for 0% and other percentages by conducting different tests named compressive strength test, flexural strength test and split tensile strength test for 7 days and 28

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  • Everything You Need to Know About Hempcrete vs. Concrete

    Everything You Need to Know About Hempcrete vs. Concrete

    Mar 19, 2020 Concrete, on the other hand, is made by mixing sand with gravel and crushed rock. Lime-based cement or hydraulic cement is then used as a binder. Structural concrete is made by combining specific proportions of cement, fine mineral aggregate, and coarse mineral aggregate. Aggregates are used to bolster the concrete’s structural performance

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  • Mechanical Properties of Aggregate – Construction How

    Mechanical Properties of Aggregate – Construction How

    Apr 13, 2020 Therefore, aggregates are intrinsic materials and their compressive strength depends largely on the rock type that is crushed (for coarse aggregates). Additionally, concrete made from an aggregate sample is likely to have lesser strength when compared to the strength of the aggregates

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  • Compressive Strength Variability in High Performance

    Compressive Strength Variability in High Performance

    is a disparity in compressive strength for two sizes and shapes measured. However, it reduces with increase in volume fraction of glass fibers. Also, Nakbin et al. [11] reported a lower strength ratio in self-compacting concrete (SCC) specimens (0.749) in comparison with normal strength concrete (NSC)

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  • Discussion: Cube tests and the uniaxial compressive

    Discussion: Cube tests and the uniaxial compressive

    with Molyslip grease in between. The aggregates and age of testing of 91 days are the same as the lime stone Ham River concretes and in Figures 2 and 3. Notice that for these p.t.f.e. pads the cube results are much lower than the normal prism strength values. The p.t.f.e. layer between the grease and the concrete

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  • Use of Waste Road-Asphalt as Aggregate in Pavement

    Use of Waste Road-Asphalt as Aggregate in Pavement

    aggregates are particles greater 4.75mm, but generally range between 9.5mm to 37.5mm.Gravels constitutes the majority of coarse aggregates used in concrete with crushed stone making must of remainder. Aggregates processing consists of crushing, screening and washing the aggregates to obtain proper cleanliness and gradation

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  • Correlations between the Properties of Crushed Fine Aggregates

    Correlations between the Properties of Crushed Fine Aggregates

    Aggregates are essential raw materials in the production of composite building materials, such as mortars and concretes. Their contribution in concrete varies between 65% to 80% by volume [ 1 ]. In lime mortars, the most common aggregate to binder ratio encountered in the literature is 3:1 by weight [

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  • Support Vector Machine Modelling for the Compressive

    Support Vector Machine Modelling for the Compressive

    water, sand and coarse aggregates. The water reacts with the cement, hence bonding the other components together. This eventually creates a robust stone-like material concrete having high compressive strength in comparison to its low tensile strength. Therefore, concrete is usually reinforced with materials that are strong in tension

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  • Bonding between Aggregates and Cement Pastes in

    Bonding between Aggregates and Cement Pastes in

    Bonding between Aggregates and Cement Pastes in Concrete 358 a part” test, and the opposite in Brazilian and compressive strength tests; (2) The roughness of granite cubes used in this project is higher than limestone cubes. However, the limestone has higher bond strength, which may be due to the chemical interaction between the limestone and

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  • Mechanical Properties of Concrete with Partial

    Mechanical Properties of Concrete with Partial

    Rashid5 et.al., conducted an investigation to achieve concrete of higher strength using crushed brick as aggregate and study the mechanical properties. Test results show that the compressive strength of brick aggregate concrete can be increased by decreasing its water-cement ratio and using

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  • COMPRESSIVE STRENGTH OF CONCRETE USING NATURAL

    COMPRESSIVE STRENGTH OF CONCRETE USING NATURAL

    Figure 5: This chart shows the comparative strength of concrete containing crushed rock aggregate and concrete with natural aggregate concrete for M20 Grade DISCUSSION From 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

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  • EFFECT OF CRUSHING METHODS OF VOLAGONJ STONE

    EFFECT OF CRUSHING METHODS OF VOLAGONJ STONE

    showed 2% more elongation than that of hand crushed aggregate. Concrete specimens were tested for compression on day 1, 3, 7, 14 and 28 for W/C ratio 0.45, 0.50, 0.55 and 0.60 to see the relation of compressive strength with time for both types of crushing methods. Test results of specimens for machine crushed and hand crushed

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