Mechanical properties of recycled aggregate concrete

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Mechanical properties of recycled aggregate concrete ...

2020-4-30  This paper investigated the mechanical properties of recycled aggregate concrete (RAC; with recycled clay brick aggregates (RCBA) as the coarse aggregates) modified by nano-particles, i.e. nano-SiO 2 (NS), nano-CaCO 3 (NC) and multi-wall carbon nanotubes (MWCNTs). Two experimental phases were carried out.

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MECHANICAL PROPERTIES OF RECYCLED AGGREGATE

2016-10-14  properties of concrete made with laboratory crushed old concrete aggregate are limited [5, 6], only few data are available on grade recycled aggregate, including durability aspects, concrete mixture proportions and fresh concrete performance. Thus, this paper evaluates the effects on the mechanical properties of hardened concrete containing

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Mechanical properties of recycled aggregate concrete ...

2016-8-8  Since aggregate represents about 70-80 % of concrete components, the use of recycledaggregates in concrete opens a whole new range of possibilities in the reuse of materials in theconstruction industry. The utilization of recycled aggregates is a good solution to the problem ofan excess of waste material, provided that the desired final product will fit the standards.The 2010 European Aggregates Association (UEPG) Annual Review (2012) reported recycledaggregates generated approximately 5% of the production of aggregates in the European Union(EU). Based on the same report, Germany is the greatest producer of recycled aggregates, with aproduction of approximately 60 million tonnes. Tam (2009) stated that in Australia, more than50% of the total concrete residue generated from CD activities is recovered for recycling, whilethe rest goes to landfills. Dosho (2007) reported that Japan has reached approximately a 98% ratefor processing concrete waste to recycled aggregates. Kou and Poon (2012) have investigated theeffects of incorporating Class F fly ash in the concrete mix design to mitigate the lower quality ofrecycled aggregates in concrete.

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(PDF) MECHANICAL PROPERTIES OF RECYCLED

Their influence on concrete mechanical properties is investigated. As a result, it has been obtained that using recycled aggregate to replace part of the normal coarse aggregate effects the elastic modulus, tensile strength and compressive strength with a value depends on

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Mechanical Properties Of Recycled Aggregates

2013-10-6  This paper reports the results of an experimental study on the mechanical properties of recycled aggregate concrete (RAC) as compared to natural aggregate concrete (NAC). The effects of size of RA on compressive strength were discussed in

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Mechanical Properties of Recycled Aggregate

This paper presents an experimental research on mechanical properties of recycled aggregate concrete (RAC) at low and high water/binder (W/B) ratios. Concrete at two W/B ratios (0.255 and 0.586) was broken into recycled concrete aggregates (RCA). A type of thermal treatment was employed to remove mortar attached to RCA.

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Mechanical properties of concrete with recycled

2007-1-1  This paper reports the results of an experimental study on some of the mechanical properties of recycled aggregate concrete (RAC) as compared to those of the conventional normal aggregate concrete (NAC). Ten mixes of concrete with target compressive cube strength ranging from 20 to 50 MPa were cast using normal or recycled coarse aggregates. The development of the cube compressive strength

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Mechanical properties of recycled concrete with

2018-6-1  It has been suggested that, although the mechanical properties of recycled aggregate concrete are generally inferior to those of conventional concrete, there is a great potential to incorporate RCA and/or RBA in structural concrete applications , , , . Compared to the RCA, the research on RBA has more challenges due to the variety of types of bricks used in different regions, which inevitably leads

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Mechanical properties of confined recycled aggregate ...

2012-1-1  Several investigators have studied the properties of recycled aggregate concrete confined by steel tubes. It is found that the mechanical properties are similar to that of ordinary concrete confined by steel tubes; however its modulus and strength are lower

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Mechanical properties and pore structure of recycled ...

2021-1-1  The initial microcracks of the recycled aggregate concrete (RAC) usually first appear in the interfacial transition zone (ITZ) during the destructive process. Thus, the performance of ITZ plays an important role in the mechanical properties of concrete [7,8]. In order to improve the mechanical performance, we add iron ore tailings (IOTs) to RAC.

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Mechanical properties of recycled aggregate concrete ...

2016-8-8  that incorporation of 3% nano-silica enhances mechanical properties of recycled aggregate concrete. Shaikh et al. (2015) investigated the effect of micro-silica contents of 5, 10 and 15 wt. % as partial replacement of cement on mechanical and durability properties of high volume fly ash – recycled aggregate concretes.

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MECHANICAL PROPERTIES OF RECYCLED AGGREGATE

2016-10-14  properties of concrete made with laboratory crushed old concrete aggregate are limited [5, 6], only few data are available on grade recycled aggregate, including durability aspects, concrete mixture proportions and fresh concrete performance. Thus, this paper evaluates the effects on the mechanical properties of hardened concrete containing

Get price

(PDF) MECHANICAL PROPERTIES OF RECYCLED

While studies on the mechanical and engineering While the economical and environmental advantages of properties of concrete made with laboratory crushed old using recycled aggregates are obvious, some problems concrete aggregate are limited [5, 6], only few data are related to durability aspects resulted in recycled aggregates available on ...

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Mechanical Properties Of Recycled Aggregates

The application of recycled aggregate to use in construction activities have been practice by developed European countries and also of some Asian countries. This paper reports the results of an experimental study on the mechanical properties of recycled aggregate concrete (RAC) as compared to natural aggregate concrete

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Mechanical properties of recycled aggregate concrete

2020-5-4  The mechanical properties of recycled aggregate concrete under multiaxial compression were tested by servo-controlled setup (TAWZ-5000/3000). Properties of strength and stress–strain relation were obtained, and the influence factors of stress ratio and recycled coarse aggregate

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The Mechanical Properties of Recycled Coarse

2019-12-31  Using recycled coarse aggregate (RCA) to replace natural pebbles and using lithium slag (LS) from industrial waste to replace cement in order to improve the mechanical properties of concrete and solve environmental problems. In this study, the effects of different substitution rates of RCA (0, 30%, 50%, and 70%) and different LS contents (0, 10#x0025;, 15#x0025;, 20#x0025;, and 25#x0025 ...

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Research on the Mechanical Properties of Recycled ...

2020-8-26  strength of recycled aggregate is lower than that of ordinary concrete, which is widely recognized by the public [7–9]. On the other hand, many micro-cracks in the recycled aggregate surface will absorb new cement particles, which makes the contact area comprehensively hydrated and increases the compactness of RAC, thus the mechanical ...

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MECHANICAL AND DURABILITY PROPERTIES OF

2017-5-27  Mechanical and durability properties of recycled aggregate concrete (RAC) made with different replacement levels of recycled coarse aggregate (RCA). Submitted to Construction and Building Materials. Huda, S.B. and Alam, M.S. 2014. Mechanical behavior of three generations of 100% repeated recycled coarse aggregate concrete.

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Some mechanical properties of normal and recycled ...

2021-7-29  recycled concrete aggregate was 3 to 5 times more than that of natural aggregate in the saturated surface dry state, due to the porosity of mortar around the recycled concrete aggregate. Arum [6] found that the workability of virgin aggregate concrete is better than that of recycled aggregate concrete at the same water/cement (w/c) ratio.

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PROPERTIES OF RECYCLED AGGREGATE CONCRETE

2015-2-18  density of recycled aggregate was on the average by 10% lower compared to the bulk density of natural aggregates [6,9,10]. 2.5. Crushing and abrasion resistance Mechanical properties of recycled aggregate are primarily dependent on the quality of the original cement mortar present in the aggregate, and also, as

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Mechanical properties of recycled aggregate concrete ...

2016-8-8  that incorporation of 3% nano-silica enhances mechanical properties of recycled aggregate concrete. Shaikh et al. (2015) investigated the effect of micro-silica contents of 5, 10 and 15 wt. % as partial replacement of cement on mechanical and durability properties of high volume fly ash – recycled aggregate concretes.

Get price

MECHANICAL PROPERTIES OF RECYCLED AGGREGATE

2016-10-14  properties of concrete made with laboratory crushed old concrete aggregate are limited [5, 6], only few data are available on grade recycled aggregate, including durability aspects, concrete mixture proportions and fresh concrete performance. Thus, this paper evaluates the effects on the mechanical properties of hardened concrete containing

Get price

(PDF) MECHANICAL PROPERTIES OF RECYCLED

While studies on the mechanical and engineering While the economical and environmental advantages of properties of concrete made with laboratory crushed old using recycled aggregates are obvious, some problems concrete aggregate are limited [5, 6], only few data are related to durability aspects resulted in recycled aggregates available on ...

Get price

Mechanical properties of recycled aggregate concrete

2020-5-4  The mechanical properties of recycled aggregate concrete under multiaxial compression were tested by servo-controlled setup (TAWZ-5000/3000). Properties of strength and stress–strain relation were obtained, and the influence factors of stress ratio and recycled coarse aggregate

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Mechanical Properties of Recycled Concrete Aggregate

2021-3-25  Mechanical Properties of Recycled Concrete Aggregate with Varying Percentage of Recycled Aggregates Tejaswini Vijay Jadhav1, Vivek Bapusaheb Chaudhari 2, Vijay Shivaji Shingade 3 1Student, Dept. of Civil Engineering, Sinhgad Institute of

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Mechanical Properties of Recycled Concrete

2019-3-21  Mechanical properties of recycled concrete aggregate (RCA) and recycled asphalt pavement (RAP) were evaluated for use as backfill in mechanically stabilized earth (MSE) walls. Large scale triaxial compression tests, interface direct shear tests, and pull-out tests were conducted to evaluate interaction of RCA and RAP with geosynthetics.

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Experimental research on mechanical properties of

2011-7-28  Through a series of experiments, used construction rubbish as recycled aggregate, the compressive strength and elastic modulus of recycled concrete specifically were studied, which recycled concrete specimens with this recycled aggregate, that contain C20, C30 C40 these three kinds of compressive strength levels by different recycled coarse aggregate contents (30%, 50% 100%).

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Research on the Mechanical Properties of Recycled ...

2020-8-26  strength of recycled aggregate is lower than that of ordinary concrete, which is widely recognized by the public [7–9]. On the other hand, many micro-cracks in the recycled aggregate surface will absorb new cement particles, which makes the contact area comprehensively hydrated and increases the compactness of RAC, thus the mechanical ...

Get price

MECHANICAL AND DURABILITY PROPERTIES OF

2017-5-27  Mechanical and durability properties of recycled aggregate concrete (RAC) made with different replacement levels of recycled coarse aggregate (RCA). Submitted to Construction and Building Materials. Huda, S.B. and Alam, M.S. 2014. Mechanical behavior of three generations of 100% repeated recycled coarse aggregate concrete.

Get price

Some mechanical properties of normal and recycled ...

2021-7-29  recycled concrete aggregate was 3 to 5 times more than that of natural aggregate in the saturated surface dry state, due to the porosity of mortar around the recycled concrete aggregate. Arum [6] found that the workability of virgin aggregate concrete is better than that of recycled aggregate concrete at the same water/cement (w/c) ratio.

Get price
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