Paving with Precast Concrete Made with Recycled Mixed ...

Dec 21, 2018 · This recycled aggregate is a heterogeneous mixture of unbound aggregates, concrete, ceramic, etc., used as a secondary recycled aggregate and commonly produced in a lot of recycling plants in many European countries. This material was supplied by Tecnología y Reciclado S.L., the other collaborating company.

Valorization of Fine Recycled Aggregates Contaminated with ...

The use of coarse recycled aggregates has been shown to produce concrete with acceptable properties [11,12,13,14,15]. Fine recycled aggregates (FRA), however, have more nefarious characteristics and their incorporation into a new concrete is up to now generally avoided [16,17].

IMPACT OF USING RECYCLED AGGREGATES ON ...

Abstract: Recycled aggregate concrete is considered the next generation in the field of construction: it respects the environment, solves the problem of debris ... by K Naouaoui · ‎2019 · ‎Related articles

Experimental Study of Compressive Strength of Recycled ...

The utilization of recycled aggregate is particularly very promising as 75 per cent of concrete is made of aggregates. The enormous quantities of demolished concrete are available at various construction sites, which are now posing a serious problem of disposal in urban areas. This can easily be recycled as aggregate and used in concrete.

Treatments for the Improvement of Recycled Aggregate ...

Abstract. The microstructure of recycled aggregate prepared from the crushing of old concrete was studied. It was found that the recycled aggregate is covered ...

Enhancing the Performance of Recycled Aggregate Mortars ...

The aim of this paper is to advance the research on the use of alkali-activated fly ash in recycled concrete aggregate (RCA) bearing mortar (RAM) to achieve low carbon footprint and sustainability in construction. To this end, the present paper explores the advantages in terms of improved properties of RAM by incorporating fly ash with an alkali-silicate activator.

Modeling recycled aggregate concrete crack by extended ...

ABSTRACT Crushing concrete to bring the aggregates back to be used for concrete structures is a process of creating recycled aggregate (RA). Recycled aggregate concrete (RAC) has become increasingly important in the field of construction. The use of recycled aggregate concrete made from recycled

Investigations of the structural characteristics of ...

Abstract The paper tried to investigate the structural characteristics of concrete produced by partially replacing natural aggregates with recycled aggregates at varying water/cement ratios. The study is basically a laboratory experimental study.

Study on Use of Recycled Coarse Aggregate In Concrete

Abstract— There is a critical shortage of virgin aggregates and hence the availability of demolished concrete for use as recycled concrete aggregate (RCA) is ...

EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON PROPERTIES ...

Jul 14, 2020 · ABSTRACT. The possibility of the use of recycled aggregates from the construction industry in green concrete production is of increasing importance to reduce the ...

Comparisons of natural and recycled aggregate concretes ...

Natural and recycled aggregates were used as the coarse aggregate in the concrete mixtures. In this study, crushed granite was used as the natural aggregate and recycled aggregate sourced from a recycling facility in Hong Kong was used (the RA contained more than 90% crushed recycled rubbles).

Effect of Flyash on Recycle Coarse Aggregate Concrete

Abstract. The rapid growth in construction and depleting natural resources demands the recycling and reusing technology to be adopted in construction field. by AN Dabhade · ‎Cited by 10 · ‎Related articles

Neutralization of high pH and alkalinity effluent from ...

Dec 11, 2019 · Abstract Use of recycled concrete aggregate (RCA) as highway basecourse material conserves virgin aggregate, reduces energy consumption and CO2 emissions, and may also decrease costs during constru...

The modification effects of a nano-silica slurry on ...

abstract = "The modification effects of a nano-silica slurry on properties of recycled aggregate concrete (RAC) were experimentally studied. Together with natural aggregate concrete (NAC), non-modified and modified RAC were applied in three beams in a real project.

(PDF) The influence of recycled concrete aggregate on the ...

Abstract. Use of Recycled Coarse Aggregate (RCA) in concrete can be described in terms of . environmental protection and economy. This paper deals with the mechanical properties of concrete .

Recycled Aggregate Concrete Structures - Springer Professional

Abstract. This chapter introduces the basic strategy and possible procedure for recycled aggregate concrete (RAC) from a viewpoint of sustainable development ...

Recycled Aggregate - an overview | ScienceDirect Topics

Said Kenai, in Waste and Supplementary Cementitious Materials in Concrete, 2018. Abstract. Construction industry generates huge amounts of debris that needs to be recycled and reused as recycled aggregates (RAs) for partial or total substitution of natural aggregates.

Use of RECYCLED AGGREGATES In CONCRETE- A Paradigm Shift

Recycled aggregate posses relatively lower bulk density, crushing and impact values and higher water absorption as compared to natural aggregate. The compressive strength of recycled aggregate concrete is relatively lower up to 15% than natural aggregate concrete.

Two-factor Analysis on Compressive Strength of Recycled ...

Abstract—Recycled coarse aggregate (RCA) was obtained from waste samples of C30 in the laboratory through crushing, washing and screening and cube compressive strength test was conducted on RCA concrete under different conditions. The results show that the compressive strength of recycled

Microstructural Features of Recycled Aggregate Concrete ...

Abstract. The use of concrete-recycled aggregates to produce high-performance concrete is limited by insufficient correlation between resulting microstructure ... by D Pedro · ‎2019 · ‎Cited by 4 · ‎Related articles

Influence of CDW Recycled Aggregate on Drying Shrinkage of ...

Abstract: The use of fine recycled aggregates as raw material in the production of mortars appears as a good alternative to minimize waste disposal, so as to ... by PRL Lima · ‎2012 · ‎Cited by 30 · ‎Related articles

Indian Concrete Journal

A study on the use of construction and demolition waste as coarse aggregate in self-compacting concrete for sustainability S. Girish, N. Ajay, Sasha Azimi View Abstract Mechanical properties and permeability of pervious concrete made with recycled concrete aggregates Shoukai Chen, Zhengnan Zhang, Jialin Chen, Yajing Bie View Abstract

Design codes and modeling for FRP recycled aggregates ...

Keywords : Confinement; Bio-ressourced composite, Carbon Epoxy Composite, recycled aggregate concretes,. ABSTRACT: This research investigates the ...

Use Of Recycled Aggregate In Concrete – IJERT

-BY Mr. Tushar R Sonawane RESEARCH GRADUATE MAEERS MIT PUNE, Prof. Dr. Sunil S. Pimplikar H. O. D. CIVIL ENGG. DEPARTMENT, MAEERS MIT PUNE. ABSTRACT Use of recycled aggregate in concrete can be useful for environmental protection. Recycled aggregates are the materials for the future. The application of recycled aggregate has been started in a large number of construction projects of many European, American, Russian and Asian countries. Many countries are giving infrastructural laws relaxation fo

Reusing recycled aggregates in structural concrete - NASA/ADS

The utilization of recycled aggregates in concrete can minimize environmental impact and reduce the consumption of natural resources in concrete applications. The aim of this thesis is to provide a scientific basis for the possible use of recycled aggregates in structure concrete by conducting a comprehensive programme of laboratory study to gain a better understanding of the mechanical ...

Altmetric – An Experimental Study of Mortars with Recycled ...

Abstract: The difficult current environmental situation, caused by construction industry residues containing ceramic materials, could be improved by using these materials as recycled aggregates in mortars, with their processing causing a reduction in their use in landfill, contributing to recycling and also minimizing the consumption of virgin ...

Recycled Concrete Aggregate Modified with Polyvinyl ...

Jul 07, 2019 · Abstract. Recycled concrete aggregate (RCA) is traditionally limited to nonstructural applications. Although the crushing process results in weak mortar particles and surface cracks throughout the RCA, RCA concrete can be employed as rigid pavement materials after its mechanical strength has been improved. This research evaluated the novel use ...

Time-Dependent Behavior of Full-Scale Recycled Aggregate ...

Sixteen full-scale recycled aggregate concrete (RAC) beams were cast and tested to study their time-dependent behavior under long-term loading. The test parameters include the replacement rate of the recycled coarse aggregates (RCAs), the replacement rate of the recycled fine aggregates (RFAs), the concrete strength, and the stress ratio. The influence of the above variables on the deflection ...

Peak Strain Calculation Equation of Recycled Aggregate Concrete

Abstract—Peak strain of concrete is an important mechanical parameter. Previous studies have found that the peak strain of recycled aggregate concrete (RAC) is significantly different with natural aggregate concrete (NAC). This paper collected peak strain test data of domestic and foreign scholars and

Effect of recycled coarse aggregate on physical and ...

Abstract. Recycling of building waste has become essential process in the construction industry due to the sustainability and economic benefits such as decreasing the waste to landfill, conserving natural resources, and reducing pollution. ... In this paper, the effect of using recycled coarse aggregate (RCA) on the behavior of concrete is ...