effect of strength of parent concrete on the mechanical

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Effect of strength of parent concrete on the mechanical ...

Jan 01, 2021  The effect of quality of original concrete, from which coarse recycled concrete aggregate particles were derived, on mechanical properties of three grades of recycled aggregate concrete (RAC) has been investigated for the following two weight replacement levels of natural coarse aggregates (NCA) with the recycled aggregates: 50% and 100%.

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Effect of the quality of parent concrete on the properties ...

Feb 15, 2015  The effect of the quality of parent concrete on the properties of RAC. • Parent concrete with strength grades ranging from 30 to 100 MPa was used.. The strength of RAC with 80 and 100 MPa PCs was slightly higher than that of NAC.. The durability of RAC can be improved with RA are derived from higher strength PCs.

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Time-dependent and long-term mechanical properties of ...

Feb 15, 2018  As discussed in Section 3.3.1, the effect of recycled aggregate parent concrete strength was more significant on the mechanical properties of HC series than on those of NC series. SEM images shown in Fig. 10 explain the sensitivity of the properties of HC series mixes to the quality of recycled concrete aggregates.

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Effect of quality of parent concrete on the mechanical ...

Abstract. This paper presents the experimental results of a study on the effect of quality of parent concrete (PC) on the properties of recycled aggregates (RA) that are derived from them, and on the mechanical properties of high performance recycled aggregate concrete (HPC) when the RAs are used to prepare new concretes.

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Effect of design properties of parent concrete on the ...

Feb 01, 2019  As shown from Fig. 10-a higher reduction percentage in the RMC was clear for RCA-RC, since the parent rubberized concrete is weaker than other parent concrete. The effect of the compressive strength of parent concrete on the morphological properties of the RCA is shown in Fig. 14. 4.2. Influence of crushing level on the obtained RCA

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Effect of Quality of Parent Concrete on the Mechanical ...

Jan 01, 2012  This paper presents the experimental results of a study on the effect of quality of parent concrete (PC) on the properties of recycled aggregates (RA) that are derived from them, and on the mechanical properties of high performance recycled aggregate concrete (HPC) when the RAs are used to prepare new concretes.

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Effect of quality of parent concrete on the mechanical ...

Abstract. This paper presents the experimental results of a study on the effect of quality of parent concrete (PC) on the properties of recycled aggregates (RA) that are derived from them, and on the mechanical properties of high performance recycled aggregate concrete (HPC) when the RAs are used to prepare new concretes.

Get price

Time-dependent and long-term mechanical properties of ...

Feb 15, 2018  As discussed in Section 3.3.1, the effect of recycled aggregate parent concrete strength was more significant on the mechanical properties of HC series than on those of NC series. SEM images shown in Fig. 10 explain the sensitivity of the properties of HC series mixes to the quality of recycled concrete aggregates.

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Effect of Parent Concrete on the Performance of Recycled ...

Recycling concrete construction waste is a promising way towards sustainable construction. Indeed, replacing natural aggregates with recycled aggregates obtained from concrete waste lowers the environmental impact of concrete constructions and improves natural resource conservation. This paper reports on an experimental study on mechanical and durability properties of concretes casted with ...

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Effects of the Parent Concrete Properties and Crushing ...

Dec 12, 2013  The most important parameters associated with recycled concrete aggregate (RCA) production that may affect quality and yield include such properties of the parent concrete as the composition, strength and aggregate grading, type of crushers used, number of crushing stages, the size of the RCA particles, and the size reduction sequence.

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Effect of Cement Content on Concrete Performance

concrete property is compressive strength, since compressive strength affects so many properties of concrete. Compressive strength often increases as cement content increases. While this may seem positive, past research has shown links between increased concrete strength and

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(PDF) EFFECT ON PHYSICAL AND MECHANICAL PROPERTIES

EFFECT ON PHYSICAL AND MECHANICAL PROPERTIES . ... The present paper reports on the findings of an experimental study on the concomitant effects of the strength of the parent concrete

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(PDF) Rate effect on the mechanical properties of eight ...

Wu et al. [11] have used a SHPB (Split Hopkinson Pressure Bar) system to investigate the rate effect on the mechanical properties of copper-slag-reinforced concrete (high-performance concrete), the dynamic compressive strength was observed to improve up to 20%, at strain rate approximately 10 2 in the order of magnitude.

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Experimental study of the effect of aggregate type on ...

May 01, 2021  For this reason, investigating the effect of the concrete constituents, such as aggregates, on its mechanical and durability properties is of great importance. Aggregates make up between 60% and 80% of the volume of concrete, being surrounded by the cement paste. Aggregates are considered to be the most important factor affecting concrete strength.

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Mechanical properties of recycled concrete with demolished ...

Jun 01, 2018  The latter is because the effect of curing age. For concrete with RCA the development of strength continues after 28 days; whereas for concrete with RBA the development of strength seems very slow after 28 days, as is demonstrated in Fig. 7. Download : Download high-res image (65KB) Download : Download full-size image; Fig. 8.

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Effect of Different Curing Regimes on Strength and ...

strong effect on mechanical properties of concrete. Major effect is the development of a denser microstructure with the formation of calcium silicate hydrate (C–S–H) phases, which results in higher mechanical properties (Yazıcı et al. 2013). The effects of different curing conditions on the mechanical properties of UHPC have been ...

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Effect of recycled coarse aggregate on concrete ...

Jun 22, 2011  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. Results of 28-d test show that the strength ...

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Properties of recycled aggregate concrete designed with ...

However, extensive data are needed to deeply analyze the effect of the EMV mix design on the mechanical properties of concrete. In particular, the history of RA needs to be included. This is because RA produced from high-strength parent concrete has a positive effect on the mechanical properties of next-generation concrete , , .

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IOP Conference Series: Materials Science and Engineering ...

concrete strength at 28 and 90 days respectively. Maya et al [5]investigated the residual mechanical performance (compressive and splitting tensile strengths and elasticity modulus) of concrete made with recycled coarse aggregates after exposure to high temperatures. Specimens from all types of concrete, besides being tested at ambient temperature

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INFLUENCE OF PARENT CONCRETE ON THE PROPERTIES OF

strength of parent concrete from which the RA is derived, the resistance against mechanical actions decreases with the reduction in maximum size of aggregate. This can be attributed to

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Size effects on the mechanical behavior and the ...

This dataset could be reused for other statistical analyses on the mechanical behavior of concrete (e.g. elastic and strength properties) and associated possible mixture or size effects. In addition, the characteristic properties of the hardened concrete samples such as the apparent density, the moisture content, the modulus of elasticity as ...

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MECHANICAL PROPERTIES OF CONCRETE Afribary

ABSTRACT. The main aim of the research is to study the mechanical properties of concrete and heir effects in concrete stability and failure. He fractures mechanical properties in particular uniaxial tensile strength Ft, young’s modules Eo and fractures energy Gf as sell as the shape of the stress strain and the stress- deformation relation were investigated for high strength and normal ...

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Effect of Natural Fibre on the Strength Properties of Concrete

increased the split tensile strength value of the concrete specimen to 4.25MPa. Even at lower mix design of M20, the hybrid fibre H2 mix (0.45% kenaf fibre and 0.3% coir fibre) have shown about 36 % increase in flexural strength,27 % increase in split tensile strength and 30 % increase in compressive strength than the

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SIZE EFFECT OF AGGREGATE IN THE MECHANICAL

using concrete of high strength. the concrete structure in mix proportion of the different components together with the aggregate type and size determine the compressive. 1.1 Objectives The investigate for effects of aggregate size on the compressive strength of concrete, with particular reference; 1.

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The Mechanical Durability Performance of Concrete ...

6.2 Effect Of Difference Type Waste Concrete And Concrete Admixture Used To Produce A New Concrete 151 6.3 Effect Of Differences Waste Concrete Ash For Normal Grade Concrete 153 6.4 Effect Of Differences Waste Concrete Ash For High Strength Concrete 157 6.5 Recommendations For Further Research 160 6.6 Implication and Application 161

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Mechanical Characteristics of Hardened Concrete with ...

The available literature identifies that the addition of mineral admixture as partial replacement of cement improves the microstructure of the concrete (i.e., porosity and pore size distribution) as well as increasing the mechanical characteristics such as drying shrinkage and creep, compressive strength, tensile strength, flexural strength, and modulus of elasticity; however, no single ...

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Effects of Stirrups on Bond Behavior Between Concrete and ...

concrete, reduction of the mechanical properties of steel bar, and weakening of bond between concrete and steel bars. The deterioration of bond can affect the serviceability and ultimate strength of concrete elements significantly. After corrosion, the volume of parent steel will increase. The ratio between the

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Effect of Steel Fiber and Glass Fiber on Mechanical ...

the concrete more durable with a higher performance. To improve the tensile strength of concrete, fiber reinforcement was added. The introduction of Fiber Reinforced Concrete (FRC) is an important achievement in concrete technology. Fibers are added to improve the strength parameters of the concrete.

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Effect of Low Temperature on Mechanical Properties of ...

The effect of low temperature (-35°C) on the mechanical properties of concrete with different strength grade such as compressive strength, flexural strength, splitting tensile strength and elastic modulus was studied. The results showed that all of the mechanical properties were improved at -35°C. It was also can be found from the tests, as the strength grade increased, the growth ratios at ...

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(PDF) Mechanical Properties of Recycled Coarse Aggregate ...

Aug 21, 2021  Five concrete mixes were designed to study the effect of different RCA content on concrete mechanical properties: concrete made entirely with natural aggregate as

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Effect of the Aggregate Size on Strength Properties of ...

Mar 20, 2018  The study on preparation technology of recycled concrete with economical and technical feasibility has gained more serious attention in each country due to its involvement and effect on the environment protection and the sustainable development of human society. In this study, we conducted a control variable test to investigate and assess the influence of the aggregate size on the strength ...

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Effect of Coarse Aggregate Characteristics on Mechanical ...

Mar 01, 1990  Title: Effect of Coarse Aggregate Characteristics on Mechanical Properties of High-Strength Concrete Author(s): P. C. Aitcin and P. K. Mehta Publication: Materials Journal Volume: 87 Issue: 2 Appears on pages(s): 103-107 Keywords: coarse aggregates; compressive strength; high-strength concretes; hysteresis; modulus of elasticity; stress-strain relationships; water-cement ratio;

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Amin Effect of different fiber types on the mechanical ...

The effects of the types of fibers on mechanical properties of normal and high strength concrete under high temperature, up to 700 °C, was investigated. Three different- type fiber; "Steel Fiber (SF), Glass Fiber (GF) and Polypropylene Fiber (PPF)" are added into the concretes in five different ratios (0, 0.50, 1.00, 1.50 and 2.0%)of the ...

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