microstructural analysis of recycled aggregate concrete

Microstructural analysis of recycled aggregate concrete ...

Jun 01, 2005  Adoption of recycled aggregate from concrete waste thus becomes a burning issue. The Hong Kong SAR Government has set-up a recycling plant in Tuen Mun Area 38 aiming at turning concrete waste into recycled aggregate with a practice note and specifications issued for controlling the quality of recycled aggregate.

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Microstructural Analysis of Recycled Aggregate Concrete

Microstructural Analysis of Recycled Aggregate Concrete ... recycled concrete aggregates, is also a technology for conserving natural resources and reducing the environmental impact of the concrete. This paper presents a study on mechanical properties of concretes manufactured with recycled aggregates sizes and contents of 14 batches of RACs ...

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Microstructural Analysis of Recycled Brick Aggregate ...

Microstructural Analysis of Recycled Brick Aggregate Concrete Exposed To High Temperatures Kasi Rekha1, Poorna Chand Pamu2 1(Asst. Professor, Department of Civil Engineering, Addis Ababa Science and Technology University,AddisAbaba, Ethiopia, 2(Post Graduate Student, Department of Civil Engineering, VITAM College of Engineering Visakhapatnam,

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Microstructural analysis of recycled concrete using X-ray ...

Mar 01, 2016  The recycled coarse aggregates (RCA) used in this experimental program were obtained by casting normal-strength concrete (40 MPa, labeled here T40) and high-strength concrete (80 MPa, labeled here T80).The materials used in these mixtures were ASTM portland cement Type I/II with a specific gravity of 3.15, quartz sand with a fineness modulus of 2.9 as natural fine aggregate (NFA),

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Microstructural Analysis of Recycled Aggregate Concrete ...

Microstructural Analysis of Recycled Aggregate Concrete Produced From Two-Stage Mixing Approach. In Hong Kong, as in most cities, waste disposal is a pressing issue due to limited landfill and public filling (land reclamation) areas.

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Microstructural analysis of recycled aggregate concrete ...

Micro-structural analysis of recycled aggregate concrete produced from two-stage mixing approach Vivian W. Y. Tam1, X. F. Gao2 and C. M. Tam3* 1 Department of Building Construction, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong.

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Microstructural Analyses of Recycled Aggregate ... - Concrete

Nov 01, 2016  In this study, the effects of recycled glass (RG) and recycled concrete (RC) fine aggregates on acid and sulfate resistance as well as alkali-silica reaction (ASR) expansion of mortar mixture were investigated comparatively. In addition, durability performance of mortar mixtures was supported by microstructural analysis.

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Microstructural Analysis of Recycled Aggregate Concrete ...

Microstructural Analysis of Recycled Aggregate Concrete Produced From Two-Stage Mixing Approach. In Hong Kong, as in most cities, waste disposal is a pressing issue due to limited landfill and public filling (land reclamation) areas.

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Microstructural Analyses of Recycled Aggregate ... - Concrete

Nov 01, 2016  In this study, the effects of recycled glass (RG) and recycled concrete (RC) fine aggregates on acid and sulfate resistance as well as alkali-silica reaction (ASR) expansion of mortar mixture were investigated comparatively. In addition, durability performance of mortar mixtures was supported by microstructural analysis.

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Micro-structural analysis of recycled aggregate concrete ...

Adoption of recycled aggregate from concrete waste thus becomes a burning issue. The Hong Kong SAR Government has set up a recycling plant in Tuen Mun Area 38 aiming at turning concrete waste into recycled aggregate with a practice note and specifications issued for controlling the quality of recycled aggregate.

get price

Micro-structural analysis of recycled concretes made with ...

Jan 18, 2021  This paper investigates the microstructure of 100% recycled concrete (RC) containing recycled coarse concrete aggregates (RCA) using scanning electron microscopy (SEM). In this study, the effect of 100% replacement of RCA along with the use of cementitious materials (CM's) including micro-silica (SF), fly ash (FA) and natural zeolite (Z) was ...

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Microstructural Analyses of Recycled Aggregate-Bearing ...

of mortar mixtures was supported by microstructural analysis. For this purpose, nine different mortar mixtures were prepared by ... coarse aggregate with recycled concrete coarse aggregate

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Basic mechanical properties and microstructural analysis ...

Feb 08, 2013  The regeneration aggregate, natural aggregate, PO42.5 R Portland cement, coal fly ash, and slag powders S95 graining blast furnace, homemade P(AA-co-MA)/PEG carboxylic acid water reducing agent, were used together with recycled concrete aggregate in different regeneration rates to prepare recycled concrete (RC). The influences of different renewable aggregate ratios on the basic

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(PDF) Microstructural Characterization of Concrete ...

Microstructural Characterization of Concrete Prepared with Recycled Aggregates. Microscopy and Microanalysis, 2013. Jorge Brito

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Methods to improve microstructural properties of recycled ...

Feb 08, 2021  Recycled concrete aggregate is a demolition concrete waste, which could be an environmental-friendly building material and can be a serious contender for saving natural aggregate and reducing environmental pollution. ... ‘microstructural analysis of treated concrete’, ‘concrete testing methods Australian standards’, ‘cement hydration ...

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Mechanical and microstructural characterization of ...

(2017). Mechanical and microstructural characterization of recycled aggregate concrete containing silica nanoparticles. Journal of Sustainable Cement-Based Materials: Vol. 6, Recycled Aggregate Concrete, pp. 37-53.

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Mix Design Method for Self-Compacting Recycled Aggregate ...

Mar 03, 2020  This article is on the development of a mix design method for self-compacting recycled aggregate concrete (SCRAC) by considering the adhered mortar content (AMC) on the surface of the aggregate. In this method of mix design, the acceptable percentage of recycled concrete aggregate (RCA) depends on the AMC value.

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(PDF) IRJET- Recycled Concrete Aggregates - Academia

The split 'Microstructural analysis of recycled aggregate tensile strength of recycled concrete with replacement of concrete produced from two-stage mixing 100% RCA was less than split tensile strength of control approach', Cement and Concrete Research 35 concrete.

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Microstructural Analyses of Recycled Aggregate-bearing ...

Microstructural Analyses of Recycled Aggregate-bearing Mortar Mixture. In this study, the effects of recycled glass (RG) and recycled concrete (RC) fine aggregates on acid and sulfate resistance as well as alkali-silica reaction (ASR) expansion of mortar mixture were investigated comparatively.

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© MICROSCOPY SOCIETY OF AMERICA 2013 Microstructural ...

Microstructural Characterization of Concrete Prepared with Recycled Aggregates Mafalda Guedes,1,2,* Luís Evangelista,3,4 JorgedeBrito,4,5 and Alberto C. Ferro2,6 1Department of Mechanical Engineering, Escola Superior de Tecnologia de Setúbal, Instituto Politécnico de Setúbal, 2910-761 Setúbal, Portugal 2ICEMS, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal

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Mechanical Properties and ITZ Microstructure of Recycled ...

Jun 18, 2018  Tam VWY, GAO XF, Tam CM. Microstructural Analysis of Recycled Aggregate Concrete Produced from Two-stage Mixing Approach[J]. Cement Concrete Research, 2005, 35(6): 1195–1203. Article Google Scholar [13] Standardization Committee of the People’s Republic of China. Pebble and Crushed Stone for Construction[S]. Beijing: Standards Press of ...

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Microstructural analysis of recycled aggregate concrete ...

Adoption of recycled aggregate from concrete waste thus becomes a burning issue. The Hong Kong SAR Government has set up a recycling plant in Tuen Mun Area 38 aiming at turning concrete waste into recycled aggregate with a practice note and specifications issued for controlling the quality of recycled aggregate.

get price

Microstructural Analysis of Recycled Aggregate Concrete ...

Many researchers have attempted to prepare concrete mixes with partial replacement of virgin aggregates with recycled ones. This research paper proposes the after-effects of using Microsilica (MS) to improve the microstructural properties of recycled aggregate concrete (RAC).

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Basic mechanical properties and microstructural analysis ...

Feb 08, 2013  The regeneration aggregate, natural aggregate, PO42.5 R Portland cement, coal fly ash, and slag powders S95 graining blast furnace, homemade P(AA-co-MA)/PEG carboxylic acid water reducing agent, were used together with recycled concrete aggregate in different regeneration rates to prepare recycled concrete (RC). The influences of different renewable aggregate ratios on the basic

get price

(PDF) Microstructural Characterization of Concrete ...

Microstructural Characterization of Concrete Prepared with Recycled Aggregates. Microscopy and Microanalysis, 2013. Jorge Brito

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Microstructural Analyses of Recycled Aggregate-bearing ...

Microstructural Analyses of Recycled Aggregate-bearing Mortar Mixture. In this study, the effects of recycled glass (RG) and recycled concrete (RC) fine aggregates on acid and sulfate resistance as well as alkali-silica reaction (ASR) expansion of mortar mixture were investigated comparatively.

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Microstructure of Recycled Aggregate Concrete SpringerLink

Jun 17, 2018  The microstructural characterization of concrete prepared with RCA is described in this chapter. The interfacial transition zone (ITZ) between the aggregate and the cement mortar matrix is the most important interface in concrete. Particularly, this is very important in RAC, as the recycled aggregate concrete has more interfaces than normal ...

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© MICROSCOPY SOCIETY OF AMERICA 2013 Microstructural ...

Microstructural Characterization of Concrete Prepared with Recycled Aggregates Mafalda Guedes,1,2,* Luís Evangelista,3,4 JorgedeBrito,4,5 and Alberto C. Ferro2,6 1Department of Mechanical Engineering, Escola Superior de Tecnologia de Setúbal, Instituto Politécnico de Setúbal, 2910-761 Setúbal, Portugal 2ICEMS, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal

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Mechanical and microstructural characterization of ...

(2017). Mechanical and microstructural characterization of recycled aggregate concrete containing silica nanoparticles. Journal of Sustainable Cement-Based Materials: Vol. 6, Recycled Aggregate Concrete, pp. 37-53.

get price

(PDF) IRJET- Recycled Concrete Aggregates - Academia

The split 'Microstructural analysis of recycled aggregate tensile strength of recycled concrete with replacement of concrete produced from two-stage mixing 100% RCA was less than split tensile strength of control approach', Cement and Concrete Research 35 concrete.

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Mix Design Method for Self-Compacting Recycled Aggregate ...

Mar 03, 2020  This article is on the development of a mix design method for self-compacting recycled aggregate concrete (SCRAC) by considering the adhered mortar content (AMC) on the surface of the aggregate. In this method of mix design, the acceptable percentage of recycled concrete aggregate (RCA) depends on the AMC value.

get price

Mechanical Properties and ITZ Microstructure of Recycled ...

Jun 18, 2018  Tam VWY, GAO XF, Tam CM. Microstructural Analysis of Recycled Aggregate Concrete Produced from Two-stage Mixing Approach[J]. Cement Concrete Research, 2005, 35(6): 1195–1203. Article Google Scholar [13] Standardization Committee of the People’s Republic of China. Pebble and Crushed Stone for Construction[S]. Beijing: Standards Press of ...

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Micro-structural analysis of recycled concretes made with ...

Abstract This paper investigates the microstructure of 100% recycled concrete (RC) containing recycled coarse concrete aggregates (RCA) using scanning electron microscopy (SEM). In this study, the effect of 100% replacement of RCA along with the use of cementitious materials (CM's) including micro-silica (SF), fly ash (FA) and natural zeolite (Z) was investigated.

get price

Microstructure of concrete prepared with construction ...

Although recycled aggregates are mostly heterogeneous, less dense and more porous than natural aggregates [1], satisfactory results have been attained by several authors regarding concrete workability, mechanical properties and durability. However, a systematic microstructural characterization of recycled aggregate concrete is still unaccomplished.

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Understanding the behavior of recycled aggregate concrete ...

Dec 23, 2020  The physio-chemical changes in concrete mixes due to different coarse aggregate (natural coarse aggregate and recycled coarse aggregate (RCA)) and mix design methods (conventional method and Particle Packing Method (PPM)) are studied using thermogravimetric analysis of the hydrated cement paste. A method is proposed to estimate the degree of hydration (α) from

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