recycled aggregates workability

recycled aggregates workability

  • workability study for recycled aggregates IOSRJEN

    WORKABILITY STUDY FOR RECYCLED AGGREGATES. Parekh D. N.. 1 and Modhera C D.2. 1 Research Scholar, Applied Mechanics Department SVNIT. 2 Professor Applied Mechanics Department SVNIT Surat. ABSTRACT: Significant quantities of waste are being produced and discarded by the construction and 

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  • Workability and Rheology of Fresh Recycled Aggregate Concrete

    Oct 2, 2016 Limited studies were focused on the influence of some recycled aggregate properties on slump, which is the most frequently used measure to evaluate workability. Since this measure is a singlevalue and it is often operatorsensitive, a more quantitative estimate can be derived in terms of fundamental 

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  • Influence of recycled aggregates on the mechanical Science Direct

    An experimental program to test fresh concrete was conducted regarding the workability and tribology for different substitutions of recycled aggregates with a constant and variable W/C ratio. Mechanical strength tests were also performed. The results on aggregates clearly show a lower density for recycled aggregates which 

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  • WORKABILITY AND COMPRESSIVE STRENGTH PROPERTIES OF

    Jul 7, 2015 One study examines the effects that the cleanliness of recycled coarse aggregate particles has on the concrete properties, where cleanliness relates to the amount of cement paste and mortar adhering to the surface of the aggregate particle. The second study examines how the workability and compressive 

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  • Use of Recycled Concrete Aggregate in PCCP: Literature wsdot

    Jun 1, 2009 The workability of mixes made with RCA can be improved by limiting the use of recycled fine aggregate, adding fly as a partial cement replacement and using water reducing agents. Limiting the amount of recycled fine aggregate also improves the durability and strength of concrete made with RCA.

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  • (2011). "Design of Normal Strength Concrete Mixtures with Recycled

    use recycled concrete aggregates as replacement for natural aggregates. Three mix design methods utilizing direct weight replacement, equivalent mortar replacement, and direct volume replacement are compared based on concrete workability, compressive strength, and elastic modulus. A total of 42 mixes were.

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  • Properties of highworkability concrete with recycled concrete

    Jun 3, 2011 Properties of highworkability concrete with recycled concrete aggregate. Md. SafiuddinI, Ubagaram Johnson AlengaramII Md. Abdus SalamII Mohd Zamin JumaatII Fahrol Fadhli JaafarII Hawa Binti SaadII. IDepartment of Civil and Environmental Engineering, Faculty of Engineering, University of 

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  • The effect of superplasticisers on the workability and compressive

    This research sets out to limit the disadvantages associated with the performance of concrete containing fine recycled concrete aggregates through the use of superplasticisers. Two types of latest generation superplasticisers were used that differ in terms of water reduction capacity and robustness, and the workability, 

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  • Use of building rubbles as recycled aggregates Semantic Scholar

    The quantity of recycled fine aggregate will govern the mortar strength. D 2003 Elsevier Science Ltd. All rights reserved. Keywords: Building rubbles Recycled aggregates Mechanical properties. 1. Introduction. The possible effects of recycled aggregate upon concrete properties such as workability, strength and durability 

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  • workability study for recycled aggregates IOSRJEN

    WORKABILITY STUDY FOR RECYCLED AGGREGATES. Parekh D. N.. 1 and Modhera C D.2. 1 Research Scholar, Applied Mechanics Department SVNIT. 2 Professor Applied Mechanics Department SVNIT Surat. ABSTRACT: Significant quantities of waste are being produced and discarded by the construction and 

    >>Details
  • Increased Durability of Concrete Made with Fine Recycled Concrete

    Feb 8, 2016 This paper evaluates the influence of two superplasticizers (SP) on the durability properties of concrete made with fine recycled concrete aggregate (FRCA). . [14,19] conducted one of the first studies on the effect of a regular superplasticizer and a highperformance superplasticizer on the workability and 

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  • Use of Recycled Concrete Aggregate in PCCP: Literature wsdot

    Jun 1, 2009 The workability of mixes made with RCA can be improved by limiting the use of recycled fine aggregate, adding fly as a partial cement replacement and using water reducing agents. Limiting the amount of recycled fine aggregate also improves the durability and strength of concrete made with RCA.

    >>Details
  • RECYCLED AGGREGATE CONCRETE The Constructor

    Feb 27, 2010 The utilization of recycled sand was avoided, due to its absorption capacity, which would no doubt produce a shrinkage effect M.Etxeberria et al. If recycled aggregates are employed in dry conditions the concrete's workability is greatly reduced due to their absorption capacity. Some researchers argue that 

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  • Assessment of Recycled Aggregate Concrete

    oven dried condition that will create the interfacial bond between cement paste and aggregate particles (Poon, C. S.,. Shui, Z. H., Lam, L., Kou, S. C., 2004). This study investigated the properties of RA according to BS 882:1992, and evaluated the compressive strength and workability of the concrete using recycled 

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  • The effect of recycled aggregate concrete AIP Publishing

    Recycled aggregate is made by crushing the concrete waste at laboratory. Utilize of. WPSA and RCA is estimated to produce significant gains in strength performance (determine the strength characteristics of concrete structures) and properties of workability and water absorption for each series of mixed. Therefore, the.

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  • The effect of recycled aggregate concrete AIP Publishing

    Recycled aggregate is made by crushing the concrete waste at laboratory. Utilize of. WPSA and RCA is estimated to produce significant gains in strength performance (determine the strength characteristics of concrete structures) and properties of workability and water absorption for each series of mixed. Therefore, the.

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  • Workability and Compressive Strength of Recycled Concrete Waste

    Advanced Materials Engineering and Technology III: Workability and Compressive Strength of Recycled Concrete Waste Aggregate Concrete.

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  • THE DURABILITY OF RECYCLED AGGREGATES AND TARA

    strengths and densities than natural aggregates. Despite this the durability of concretes manufactured with these recycled aggregates is similar to that of conventional concretes. Key words: Recycled aggregate concrete, Durability, Youngs Modulus,. Compressive strength, 10% fines value, Density, Workability. 1.

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  • Influence of recycled sand and gravel on the rheological and

    The results indied that maintaining the workability of recycled aggregate concrete depends on sand or gravel substitution and their rates. Up to 30 min, slump values were decreased, but after that, no substantial change in slump values was observed. Air content increased and density decreased, with increasing recycled 

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  • Mechanical Performance Evaluation of SelfCompacting MDPI

    Aug 4, 2017 natural aggregates in terms of workability and mechanical strength. The results enabled conclusions to be established regarding the SCC's produced with fine and coarse recycled aggregates from the precast industry, based on its mechanical properties. The properties studied are strongly affected by.

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  • Influence of recycled aggregates on the mechanical Science Direct

    An experimental program to test fresh concrete was conducted regarding the workability and tribology for different substitutions of recycled aggregates with a constant and variable W/C ratio. Mechanical strength tests were also performed. The results on aggregates clearly show a lower density for recycled aggregates which 

    >>Details
  • Rheological Properties of Recycled Aggregate Concrete Using

    The aim of this research is to control rheological properties of fresh recycled aggregates concrete with fine and coarse recycled aggregates to limit the negative influence of aggregates on mechanical properties of concrete. Key words: Superplasticizer, recycled aggregate, concrete, workability, viscosity, mechanical strength 

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  • Use of building rubbles as recycled aggregates Semantic Scholar

    The quantity of recycled fine aggregate will govern the mortar strength. D 2003 Elsevier Science Ltd. All rights reserved. Keywords: Building rubbles Recycled aggregates Mechanical properties. 1. Introduction. The possible effects of recycled aggregate upon concrete properties such as workability, strength and durability 

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  • crushed concrete as a source of aggregate for new concrete

    KEYWORDS: Waste Concrete Recycled Aggregate Workability, Compressive Strength. INTRODUCTION. Several comprehensive studies during the past years [113] have dealt with the subject of aggregate supplies and needs and the possible use of waste materials as aggregates for concrete. Critical shortage of natural.

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  • Effects of Aggregate Concepts on the Workability of SlipFormed

    Only a small amount of published literature has presented any agreement on how aggregate properties affect the workability of concrete, and some of these historic aggregate design methods may give conflicting recommendations. This research aims to provide insight by comparing several historic aggregate concepts to 

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  • Evaluation of Recycled Aggregates Test Section MnDOT

    reasonable to use the same structural design of the RCA pavement as with the nonRCA and expect the same performance. The use of RCA fines had a major negative influence on the strength, shrinkage, and workability and therefore is not recommended. The practice of presoaking the recycled aggregates made it difficult 

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  • Recycled Concrete Aggregates in Portland Cement TxDOT

    Moisture control of recycled aggregate is critical in producing consistent and workable concrete. • No significant adjustment in paving operations is necessary due to the use of recycled coarse and fine aggregate in concrete. Findings regarding the engineering properties of recycled concrete aggregates and PCC 

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  • A Study of Concrete Made with Fine and Coarse Aggregates

    Jul 15, 2013 Figure 1 presents the grain size distribution of the natural and recycled aggregates. From Figure 1, the grain size distribution of natural and crushed aggregates is comparable. However, FRA are coarser which could reduce the work ability of concrete made with these fine aggregates. Recycled aggregates 

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