recycled aggregate concrete in scc ppr

recycled aggregate concrete in scc ppr

Recycling Aggregates for Self-Compacting Concrete ...

This paper presents an original study on the use of coarse recycled concrete aggregate (CRA) to obtain self-compacting concrete. Concrete with substitution ratios of 20%, 50% and 100% are compared with a control concrete. The purpose of this comparison is to check the influence of CRA on fresh SCC as well as its physical and mechanical properties.

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Self-Compacting Concrete with Recycled Aggregate—A

Dec 16, 2020  concrete (SCC) exploit its significance in the construction sector. The usage of recycled aggregate not only resolves the negative impacts on the environment but also prevents the usage of natural resources. Furthermore, it is necessary to understand the recycled aggregate property’s role in a mixed design and SCC properties.

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Self-compacting concrete with recycled aggregates – A ...

This experimental study deals with utilization of Coarse Recycled Concrete Aggregate (CRCA) and Fine Recycled Concrete Aggregates (FRCA) in Self compacting concrete (SCC) mixes. The concrete mix is designed for target strength of 40 MPa as per “Modified Nan-su

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Properties of Self-Compacting Concrete with Recycled ...

The utilisation of recycled concrete aggregate (RCA) in Self-Compacting Concrete (SCC) has the potential to reduce both the environmental impact and financial cost associated with this increasingly popular concrete type. However, to date limited research exists exploring the use of coarse RCA in SCC. The work presented in this paper seeks to build on the existing knowledge in this area by ...

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Durability Performance of SCC and SCGC Containing Recycled ...

Downloadable! This study assesses the behaviour of self-compacting geopolymer concrete (SCGC) with and without recycled concrete aggregates (RCA) by studying the rheological, mechanical and durability properties and comparison with self-compacting concrete (SCC). The idea of using RCA in geopolymer is to attain sustainable development goals, i.e., with less carbon footprint and the use of ...

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Rheology of High-Volume Fly Ash Self-Compacting Recycled ...

Apr 20, 2020  Effect of selected volumetric replacement (0%, 20%, 40%, and 60%) of cement with class-F fly ash in a binary binder and of three water-cementitious material ratios (0.40, 0.34, and 0.28) on rheology of self-compacting concrete (SCC) has been investigated using a coaxial concrete rheometer.

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Recycled Concrete Aggregate Research Papers - Academia

In the present study, recycled coarse aggregates from site tested concrete specimen were used to make concrete to investigate the recycled concrete strength. Moreover, six different types of fineness modulus (FM value 1.0, 1.10, 1.25, 1.30 and 1.40) were used for varying the fine aggregates.

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Leaching in Concretes Containing Recycled Ceramic ...

This article presents the possibilities of using soft clay pottery waste as concrete aggregate. There is shown a new approach of complete exchange natural aggregate in concrete with recycled ...

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Energy PPR Fly Ash Concrete

It has been established that 25% of natural coarse aggregate may be replaced by recycled coarse aggregate in the preparation of concrete with no significant effect on compressive strength after 28 days. F. Self-Compacting Concrete (SCC) Stone dust and fly ash are used for preparing self compacting concrete (SCC).

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LOW CEMENT STRUCTURAL LIGHTWEIGHT CONCRETE WITH

consumption of concrete made this material an ideal option for the recycling of by-products from various industries such as: porcelain polishing residue (PPR) ; tire rubber resi due (TRR) and limestone residue (LSR). These residues often lack a treatment that contributeto the s degradation of the environment.

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IOP Conference Series: Materials Science and Engineering ...

Jan 03, 2020  The demand for a sustainable concrete has increasing due to the effect of conventional concrete that led to many environmental problems such as carbon dioxide emission and depletion of natural resources. Hence, this paper discusses about the usage of ternary binder in recycled aggregate concrete (RAC).

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Self-Compacting Concrete: Materials, Properties and ...

Nov 19, 2019  Self-Compacting Concrete: Materials, Properties and Applications presents the latest research on various aspects of self-compacting concrete, including test methods, rheology, strength and durability properties, SCC properties at elevated temperature, SC manufacturing with the use of SCMs, recycled aggregates and industrial by-products. Written by an international group of contributors who

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Rheological properties of blended metakaolin self ...

One way to minimize this impact is the use of recycled concrete aggregates [5][6][7][8][9] [10] [11]. Actually, the incorporation of recycled aggregates from construction waste or demolition ...

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Experimental Study on Thermal Conductivity of Self ...

The research focuses on the use of recycled aggregate (RA), from waste pieces generated during production in precast plants for self-compacting concrete (SCC) manufactured with a double sustainable goal: recycle manufacturing waste (consumption) and improvement of the thermal properties of the manufactured product (energy efficiency).

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Progress in developing self-consolidating concrete (SCC ...

Feb 19, 2020  Recycled concrete aggregate (RCA) derived from demolition waste has been widely explored for use in civil engineering applications. One of the promising strategies globally is to incorporate RCA into concrete products. However, the use of RCA in high-performance concrete, such as self-consolidating concrete (SCC), has only been studied in the past decade.

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Home of Southern Crushed Concrete: Texas Owned Since 1991

RECYCLING AND DEMOLITION. Southern Crushed Concrete (SCC) is a Texas-owned company established in 1991. With the use of practical and inexpensive methods, SCC is able to produce recycled concrete for a variety of construction projects throughout Southeast Texas. More Info.

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Energy PPR Fly Ash Concrete

It has been established that 25% of natural coarse aggregate may be replaced by recycled coarse aggregate in the preparation of concrete with no significant effect on compressive strength after 28 days. F. Self-Compacting Concrete (SCC) Stone dust and fly ash are used for preparing self compacting concrete (SCC).

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Recycled Concrete Research Papers - Academia

The feasibility of self-consolidating concrete (SCC) containing recycled concrete aggregate (RCA) was demonstrated in structural civil engineering applications. Yet, limited information exists regarding the effect of RCA additions, especially in presence of steel reinforcement, on

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A NEW CONCRETE RECYCLING TECHNIQUE FOR COARSE AGGREGATE

Jul 07, 2015  This paper outlines technology developed to produce high quality recycled aggregate that has the same quality as crushed stone conforming to JIS A 5005 and gravel conforming to JASS 5. Properties of the concrete using the aggregate were shown to have the same quality with that made by natural aggregates such as gravel and crushed stone ...

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Towards Sustainable Self-Compacting Concrete: Effect of ...

Mar 15, 2018  Steel industry results in accumulation of steel slag wastes causing severe environmental problems. These wastes can be recycled and replace natural aggregates resulting in sustainable green concrete. In this research, natural aggregates in self-compacting concrete (SCC) are replaced, wholly or partly, by steel slag coarse aggregates that were produced by crushing by-product boulders

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Research Article Properties of Self-Compacting Concrete ...

Recycled aggregate . C - [ ], respectively. e recycled aggregate used was a crushed and unwashed recycled concrete aggregate, with a nominal size of mm sourced from a construction and demolition waste recycling facility. e coarse natural aggregate consisted of crushed granite with a nominal size of mm. Table presents the water absorption ( hours)

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Rheological behavior of Portland cement pastes and self ...

Jun 30, 2018  1. Introduction. Self-compacting concrete (SCC) is a highly flowable concrete that can spread into place under its own weight and achieve good consolidation in the absence of vibration without exhibiting defects due to segregation and bleeding .To achieve such stability, this type of concrete needs high fines content, often leading to high cement consumption , , .

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Strength and Durability Evaluation of Recycled Aggregate ...

May 14, 2015  This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete.

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EpiSteme - Current Issues

Abstract:Self-Compacting Concrete (SCC) was developed in Japan about twenty-seven years ago and has been used successfully in numerous applications where normal concrete is difficult to place and consolidate due to reinforcement congestion and difficult access. This study describes how Self-Compacting Concrete can be applied for prestressed ...

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Properties of SCC containing pozzolans, Wollastonite micro ...

Aug 12, 2019  Self compacting concretes (SCC) containing higher volumes of pozzolanic materials possess compressive strengths up to 30MPa. Fibers like steel, polypropylene, and carbon fibers are added in small volumes ranging from 0.25-2% v/v of concrete to increase the strength (>40MPa) of such concretes as higher volumes of fiber cause balling effect on account of inhomogeneity, thereby

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Mechanical performance of recycled aggregate self ...

Mar 01, 2021  The utilization of recycled concrete aggregate (RCA) can reduce the environmental impact and decreases the cost of concrete. In this study, a comprehensive...

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Use of Recycled Coarse Aggregate in Self Compacting

CHEM-CONFLUX 20 Special Issue J. Indian Chem. Soc. Vol. 97, October(A) 2020 Use of Recycled Coarse Aggregate in Self Compacting Concrete Anjali Singha*, P.K. Mehtab, Rakesh Kumarc aResearch Schloar, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, U.P., India b,cProfessor, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, U.P., India

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CHARACTERIZATION OF RECYCLED SELF-COMPACTING

For producing SCC; coarse recycled aggregate obtained from crushed concrete was researched. In this research, three types of concrete mixtures were made. The percentages of recycled aggregated were 0%, 50% and 100% as a replacement of coarse aggregate. The results indicated that recycled aggregate can be used for making SCC.

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Properties of SCC containing pozzolans, Wollastonite micro ...

concrete smooth due to pore size and grain size refinement carried over by them in between the voids of cement particles. Hence the present study aims to utilize pozzolanic materials to miti-gate the limitations of recycled aggregates and fibers in yielding a SCC, which should have a flexural strength 4.5MPa and abrasion-resistant quality.

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Experimental analysis of fiber‐reinforced recycled ...

Jun 28, 2019  The combination of the fibers, RAC, and SCC may create advantages for the construction industry. In this study, the polypropylene (PP) fiber at 0.1, 0.15, 0.2, and 0.25% volume fractions and steel fibers at 0.25, 0.5, 0.75, and 1% volume fractions are introduced into fiber‐reinforced recycled aggregate self‐compacting concrete (FR‐RASCC).

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Influence of Recycled Aggregate on Shear Behavior of Steel ...

self-compacting concrete (SCC) beams with recycled concrete aggregate (RCA) as a complete replacement of both natural coarse and fine aggregate. The experimental program consists of 24 beams of which 12 beams were cast with natural aggregate and remaining 12 beams were cast using recycled aggregates as a complete replacement of natural aggregates.

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Improving the Durability Properties of Self-Consolidating ...

Feb 17, 2021  高达10%返现  The paper evaluates the durability properties of Self-Consolidating Concrete (SCC) containing fine and coarse recycled concrete aggregates. The SCC mixtures were made with 0%, 25%, 50%, 75% and 100% substitution of Fine Natural Aggregates (FNA) with Fine Recycled Concrete Aggregates (FRCA) whereas Coarse Natural aggregates (CNA) were partially substituted (50%) with Coarse Recycled Concrete ...

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STUDY OF FRESH AND MECHANICAL PROPERTIES OF SELF ...

concrete if the requirements for all three characteristics are fulfilled. In this study, Self - Compacting Recycled Coarse Aggregate Concrete (SCRCAC) is produced by integrating the Recycled Coarse Aggregate (RCA) in SCC and its optimum replacement of RCA is determined. 2. MATERIALS The materials used in this study are Cement, Fly ash,

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Split Tensile Strength of Self-Compacting Concrete with

however, they are minimal. Most of the studies use recycled coarse aggregates in the manufacture of concrete [19–22], the least use recycled fine aggregates [23–26], other studies use aggregates of different nature [27–30], although most are aggregates from concrete waste [31–34]. Other studies focus on the manufacture of mortars [35 ...

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Research on Recycled Concrete Aggregates at NUS ...

Jun 01, 2013  Sustainable concrete construction is critical to the economic development of infrastructures. The need and demand for infrastructure development is crucial to economic and social well-being of all nations. Of all the constituents in concrete coarse aggregate forms the biggest volume. As the reserve of aggregates is finite, the availability of suitable recycled concrete aggregate from ...

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Durability and Mechanical Properties of Self-Compacting ...

In this research, a sustainable approach is followed to develop efficient mixtures incorporating recycled fine aggregate (RFA) remained from structure demolition as well as limestone filler (LF) from production of hot mix asphalt (HMA). The LF is a byproduct of the drying process in HMA production plant which is not entirely consumed in the production of the HMA and must be hauled and disposed ...

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bs en 12620 aggregates for concrete - Grinding Mill China

Posts Related to bs en 12620 aggregates for concrete » quantity of cement,sand,coarse aggregate use in design mix m15,m20,m25,m30 grade concrete » recycled aggregate concrete in scc ppr » production and uses of crushed aggregates » ratio of cement sand and aggregate in concrete,m25

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8-K - SEC.gov HOME

2 U.S. Concrete – Overview Vertically integrated national producer of ready- mixed concrete Top-3 position in each major market served ~1/3 of aggregates sourced internally Ready-mixed concrete segment 162 standard and volumetric plants 1,400+ ready-mixed trucks 7.0 million cubic yards sold in 2015 Aggregates segment 14 operating facilities; 3 import terminals ~130 million tons of owned and ...

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IKCEST

Fracture energy of coarse recycled aggregate concrete using the wedge splitting test method: influence of water-reducing admixtures; Mix design approach for low-powder self-consolidating concrete: Eco-SCC—content optimization and performance; Dynamic excitation and FE analysis to assess the shear modulus of structural timber

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