Nanosilica Improves Recycled Concrete Aggregates

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Nanosilica Improves Recycled Concrete Aggregates

2021-8-29  Recycled Concrete Aggregates (RCAs) are obtained by crushing of concretes from demolition of concrete structural components in many structures such as: old buildings, concrete pavements, bridges structures, at the end of their service life utility, structures deteriorated beyond the possibility of repairs, structures that are turned into debris resulting from natural disasters (such as ...

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Influence of Nano-Silica on the properties of recycled ...

2014-3-31  Hosseini et al confirmed that the replacing cement by 3% of NS of in the concrete made with 100% recycled aggregate produces strength more that of concrete made with natural aggregates. Moreover, microstructure became dense, uniform and even extremely small voids had been omitted due to the filling of small particles of NS in those voids.

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Influence of incorporation of nano-silica and recycled ...

2014-11-30  Aggregates: The crushed dolerite of 20 mm nominal size was used as coarse natural aggregates used for preparation of concrete mixtures.The RCA were prepared from the waste concrete collected from a 30 years old demolished building of Jhargram, West Bengal (A city of Eastern India).Locally available river sand conforming to the Zone II specification of IS 383-1970 was used as

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(PDF) Influence of Nano-Silica on the Compressive

This study is conducted (1) to examine the influence of recycled aggregate on interfacial transition zone (ITZ), strength, chloride penetration, and carbonation of concrete, and (2) to propose a ...

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Influence of incorporation of nano-silica and recycled ...

The present study aims to replace 30%, 40%, and 50% of the natural coarse aggregate (NCA) of concrete with recycled coarse aggregate containing used nano-silica (RCA-UNS) to produce a new ...

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A new method to improve the properties of recycled ...

2019-11-1  The recycled aggregate concrete was reinforced with basalt fiber and nano-silica, and its mechanical properties, including compressive strength, splitting tensile strength and flexural strength were tested. Meanwhile, the microstructure of the recycled aggregate concrete was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD ...

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Beneficial role of nanosilica in cement based materials ...

2013-10-1  1.1. Nucleation reaction. Download : Download full-size image Further, the pozzolanic reaction of nanosilica with Ca(OH) 2, which is formed during the hydration of cement, produces additional C–S–H which is the main constituent for strength and density in the hardened cementitious system.At the same time Ca(OH) 2, which hardly contributes to strength development, is consumed.

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AN OVERVIEW ON EFFECTS OF NANOSILICA ON

Concrete is the most widely used building material due to its high strength and durability. However, present day concrete structures are facing more durability problems than those of ancient times.

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Impact Properties of Recycled Aggregate Concrete with ...

2020-9-2  The optimal soaking time and nanosilica concentration were chosen by the physical properties of the nanosilica-modified recycled aggregate. Recycled aggregate concrete (RAC) and nanosilica recycled aggregate concrete (SRAC) were fabricated by using ordinary recycled aggregate and nanosilica-modified recycled aggregate. Based on the comparative experimental study of basic

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Behaviour of green concrete (blended concrete) using

2021-6-15  Compressive strength. The compressive strength of bagasse ash, GGBS, nanosilica and recycled concrete aggregates blended samples were represented in Fig. 1.A comparison was made on bagasse ash and varying percentages of nanosilica incorporated concrete ranging from 0 to 6% for curing ages of 7, 28 and 90 days.

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Nanosilica Improves Recycled Concrete Aggregates ...

2014-5-2  Nanosilica Improves Recycled Concrete Aggregates. Swapna Kutcharlapati, Technical Assistant, Ramky Infrastructure, Hyderabad; A. K. Sarkar, Professor, Birla Institute of Technology and Science, Pilani; N P Rajamane, Head, Centre for Advanced Concrete Research, SRM University, Katankulathur Major problems occurring while using Recycled Concrete Aggregates (RCAs) in

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Effect Of Nano silica On Mechanical Properties Of

2021-2-27  properties of concrete made with recycled aggregates 2) To analyze the structural behaviour of concrete made with different percentages of recycled coarse aggregates. 3)To analyze the option for the use of recycled aggregate in concrete in main stream construction rather than using it as an infill material. 2. EXPERIMENTAL WORK 2.1. Materials:

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Nano-Silica Modified Recycled Aggregate Concrete ...

2021-9-5  The coarse RA was recycled concrete aggregate produced by crushing old concrete portions generated by demolishing old concrete buildings. The water absorption and the specific gravity of the RA were 3.3% and 2.45, respectively. The fine aggregate used in

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ISSN: 0976-1353 Volume 21 Issue 4 APRIL 2016

2020-11-10  STRENGTH OF RECYCLED AGGREGATE CONCRETE BY : B.B. -426X Volume 3, Number 2 (2013). 2. Nano silica Improves Recycled Concrete Aggregates By Swapna Kutcharlapati, A. K. Sarkar, N P Rajamane. 3. COMPRESSIVE STRENGTH OF CONCRETE WITH FLY ASH, NANOSILICA AND RECYCLED AGGREGATE

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(PDF) EXPERIMENTAL STUDY ON " M25 GRADE RECYCLED

EXPERIMENTAL STUDY ON " M25 GRADE RECYCLED AGGREGATE CONCRETE WITH ADDITION OF NANO-SILICA " ... It is concluded that cement could be replaced up to 20% by RHA in presence of Nano SiO2 particle up to 2% which improves physical and mechanical properties of concrete. ... of concrete containing recycled aggregates and nanosilica. An improvement in ...

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Compressive Strength of Nano-Silica Incorporated

2016-2-29  Keywords-recycled aggregate concrete, nano-silica, compressive strength, ANOVA. 1, INTRODUCTION Recycling of waste concrete for production of aggregates can be helpful in solving problems like depletion of natural resources, scarcity of land

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Impact Properties of Recycled Aggregate Concrete with ...

2020-9-2  The optimal soaking time and nanosilica concentration were chosen by the physical properties of the nanosilica-modified recycled aggregate. Recycled aggregate concrete (RAC) and nanosilica recycled aggregate concrete (SRAC) were fabricated by using ordinary recycled aggregate and nanosilica-modified recycled aggregate. Based on the comparative experimental study of basic

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Investigations on Stone Matrix Asphalt Mixes Containing ...

The present work is an attempt to explore use of recycled concrete aggregate (RCA) to replace natural aggregates (NA) in a sustainable way in stone matrix asphalt (SMA) mixes used

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(PDF) Effect of Different Moisture States of Surface ...

nanosilica-improves-recycled-concrete-aggregates.html [11] M. Tsujino, T. Noguchi, M. Tamura, M. Kanematsu, ... The modulus of elasticity of recycled aggregate concrete, with or without high ...

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Aggregates for Concrete

2017-8-5  Chapter 7—Recycled aggregates, p. E1-23 7.1—Introduction to recycled aggregates 7.1.1—Definition 7.1.2—Properties Chapter 8—Selected references on aggregates, p. E1-24 Chapter 9—Glossary, p. E1-25 CHAPTER 1—INTRODUCTION Hydraulic cement concrete is a cement and water paste in which aggregate particles are embedded. Aggregate is ...

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Nanosilica Improves Recycled Concrete Aggregates ...

2014-5-2  Nanosilica Improves Recycled Concrete Aggregates. Swapna Kutcharlapati, Technical Assistant, Ramky Infrastructure, Hyderabad; A. K. Sarkar, Professor, Birla Institute of Technology and Science, Pilani; N P Rajamane, Head, Centre for Advanced Concrete Research, SRM University, Katankulathur Major problems occurring while using Recycled Concrete Aggregates (RCAs) in

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Nano-Silica Modified Recycled Aggregate Concrete ...

2021-9-5  The coarse RA was recycled concrete aggregate produced by crushing old concrete portions generated by demolishing old concrete buildings. The water absorption and the specific gravity of the RA were 3.3% and 2.45, respectively. The fine aggregate used in

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Impact Properties of Recycled Aggregate Concrete with ...

2020-9-2  The optimal soaking time and nanosilica concentration were chosen by the physical properties of the nanosilica-modified recycled aggregate. Recycled aggregate concrete (RAC) and nanosilica recycled aggregate concrete (SRAC) were fabricated by using ordinary recycled aggregate and nanosilica-modified recycled aggregate. Based on the comparative experimental study of basic

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Compressive Strength of Nano-Silica Incorporated

2016-2-29  Keywords-recycled aggregate concrete, nano-silica, compressive strength, ANOVA. 1, INTRODUCTION Recycling of waste concrete for production of aggregates can be helpful in solving problems like depletion of natural resources, scarcity of land

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Development of construction materials using nano-silica ...

For this, experimental work has been carried out to examine the influence of nano-silica and recycled aggregates on compressive strength, modulus of elasticity, water absorption, density and volume of voids of concrete. Fully natural and recycled aggregate concrete mixes are designed by replacing cement with three levels (0.75%, 1.5% and 3%) of ...

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Use of Nano-SiO2 to Improve Microstructure and

Abstract. The purpose of this paper is to provide new type of recycled aggregate concrete (RAC) incorporating nano-SiO 2.In particular, we investigate the effects of colloidal nano-silica solution on the properties of fresh and hardened concrete.

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Use of Construction and Demolition Waste as Aggregate ...

2012-11-21  Kutcharlapatty S, Sarkar AK, Rajamane NP (2011) Nanosilica improves recycled concrete aggregates. New Build Mate Constr Worlds 16(1):190–199 Google Scholar Kwan WH, Ramli M, Kam KJ, Sulieman MZ (2012) Influence of the amount of recycled coarse aggregate in concrete design and durability properties.

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Effect of Nanosilica on Mechanical and Microstructural ...

Also, nanosilica would fill pores thereby increasing the mortar strength. Hence, the addition of nanosilica to cement mortars improves their strength characteristics. Figure (3): Compressive strength of the mixes for 7 and 28 days Effect of Nanomaterials on Mortar Pore Structure To verify the mechanism predicted by the

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The effect of nano-SiO2 on concrete properties: a review

In recent years, the addition of nanometer materials to concrete materials has attracted a group of increasing number of scholars’ research interests, and nano-SiO 2 is one of the research hotspots. In this paper, we briefly introduce the influence of nano-SiO 2 on setting time, slump, shrinkage, durability and mechanical properties of concrete. In addition, this review also includes the ...

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Aggregates for Concrete

2017-8-5  Chapter 7—Recycled aggregates, p. E1-23 7.1—Introduction to recycled aggregates 7.1.1—Definition 7.1.2—Properties Chapter 8—Selected references on aggregates, p. E1-24 Chapter 9—Glossary, p. E1-25 CHAPTER 1—INTRODUCTION Hydraulic cement concrete is a cement and water paste in which aggregate particles are embedded. Aggregate is ...

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