Elasticity Modulus of concrete with recycled aggregate
weight and type of aggregate, according to SADATI et al. , ESTOLANO et. al. , SOUZA et.al.  and CAMPOS et.al. . According to the authors, there is a need to estimate the mechanical properties of con-crete with recycled aggregates, of a very varied nature, one of these properties being the modulus of elastici-
Evaluation on the Surface Modification of Recycled Fine Aggregate
Recycled aggregates (RAs) production techniques are essential for the material circulation society because RAs from demolished concrete waste can sustainably be reused as a concrete material. However, RAs can bring about several performance decreases when they are used for recycled aggregate concrete (RAC) because of the low qualities (i.e., high water-absorption rate and low density) caused ...
Environmental evaluation of concrete made from recycled concrete aggregate
The paper evaluates the environmental impact of natural and recycled aggregate concretes based on LCA. • Results were obtained according to both NF P 01–010 and EN 15804 standards. • The environmental behavior of concrete established from waste materials
6. Pavement Friction Design | Guide for Pavement Friction
TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 108: Guide for Pavement Friction examines the management of pavement friction on existing highways and explores the design of new highway surfaces with adequate pavement friction.
Performance of hot-mix asphalt produced with double coated
This paper evaluates the performance of hot-mix asphalt (HMA) made with double coated recycled concrete aggregates (DCRCAs). It is aimed to assess the performance properties of HMA made with DCRCA such as rutting, fatigue, and dynamic modulus. The ...
Evaluation of concrete recycling system efficiency for ready-mix
The reclaimed water, pre-treated to ensure that its density is less than 1.03g/cm(3), can be used on an industrial scale without causing any harm to the concrete. The use of recovered aggregates consequently induces an increase in water demand and cement consumption to ensure the workability conditions of concrete that is proportional to the ...
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Coated Recycled Aggregate Concrete Exposed To Elevated
This paper deals with the study of mechanical as well as microstructural properties of Recycled aggregate concrete (RAC) with uncoated and Geo-polymer / Cement coated recycled aggregate exposed to elevated temperature. Fly ash (as replacement of cement
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Experimental investigation of photocatalytic effects of concrete in
05-07-2018 · It was found that 30%-50% of natural coarse aggregate replaced by recycled coarse aggregates coated with TiO2 would significantly improve the photocatalytic performance of concrete measured by degradation rate of NO2. Micro-structures of recycled aggregates observed under microscope indicated that soaking recycled aggregates in TiO2 solution ...
Evaluation of pre-coated recycled concrete aggregate for hot mix
Highlights We produce pre-coated recycled concrete aggregate (PCRCA). It can ease aggregate shortage and reinforce the strength. The optimum coating thickness is 0.25 mm. The PCRCA have highly pores contents, water absorption and asphalt ...
Glass Concrete Aggregate - Schneppa Recycled Crushed Glass
Be inspired by our glass concrete aggregate! Transform any exposed aggregate pre-mix easily with Schneppa Glass Recycled coloured glass pieces or Schneppa PolyGlow glow in the dark stones. Australia Wide Delivery Available Supplier of *Recycled Crushed Glass *Mirror Glass *Glow Stones *Glass Landscaping Rocks *Fire Glass* Showroom - Croydon - VIC ...
Comparison of recycled aggregate treatment methods on the performance for recycled concrete
Kong et al. pre-coated the recycled aggregate with pozzolanic materials using the triple mixing method, and then qualitatively evaluated the interface of the pre-coated aggregate using SEM. Zhao et al.  used sulfoaluminate cement and fly ash to pre-coat the recycled aggregate, and obtained the mixing ratio of the optimal slurry thickness.
Research Article Performance Evaluation of Stone Mastic Asphalt and Hot Mix Asphalt Mixtures Containing Recycled Concrete Aggregate
performed experiments on the e ects of recycled concrete aggregates on the properties of HMA, in which % RCA by dry weight of total aggregates was used as coarse aggregate in the asphalt mixtures. e performance tests carried out on these mixes showed
Evaluation of Effects of Recycled Concrete Aggregate on
This use of recycled concrete aggregate (RCA) as an HMA aggregate can be beneficial for constructing low-volume roads. RCA differs from virgin aggregates in that there is cement paste on the surface of the recycled concrete. In this study, 5% RCA was
Laboratory Evaluation of Using Recycled Marble Aggregates on
Laboratory Evaluation of Using Recycled Marble Aggregates on the Mechanical Properties of Hot Mix Asphalt ... Road construction and maintenance require large quantities of virgin aggregate (VA). Using waste aggregate as an aggregate replacement reduces ...
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Mechanical Performance Evaluation of Self-Compacting Concrete with Fine and Coarse Recycled Aggregate
2017/8/4 · Mechanical Performance Evaluation of Self-Compacting Concrete with Fine and Coarse Recycled Aggregates from the Precast Industry. Santos SA(1), da Silva PR(2), de Brito J(3).
Semantic Scholar - Feasibility of Using Nanoparticles of SiO2 to Improve the Performance of Recycled Aggregate Concrete
The properties of recycled aggregate produced from mixed (masonry and concrete) construction and demolition (C&D) waste are highly variable, and this restricts the use of such aggregate in structural concrete production. The development of classification techniques capable of reducing this variability is instrumental for quality control purposes and the production of high quality C&D aggregate ...
Research & Product Evaluation and Qualified Products List
The Research and Product Evaluation Section is responsible for the testing and evaluation of all new products proposed for use in Tennessee's highway program. In addition, this section also distributes information gained from testing and evaluating these products and maintains the Department's Qualified Products List.
Study of potential advantages of pre-soaking on the properties of pre-cast concrete made with recycled coarse aggregate
Study of potential advantages of pre-soaking on the properties of pre-cast concrete made with recycled coarse aggregate Recycled aggregate (RA) from construction and demolition waste is traditionally used for the manufacture of concrete for different applications.
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City Of Columbus Approved Producers / Products
Tecspan Concrete Products Columbus OH. United Precast, Inc. Mt. Vernon OH. Detectable Warnings: Preliminary Approval Only, Products Under Evaluation Type "A" -Pre-Cast, Manufactured Clay and Concrete Pavers Whitacre-Greer Fireproofing Company NO LONGER APPROVED AS OF 1400 S. Mahoning Avenue, January 5, 2009
Concrete aggregate legal definition of concrete aggregate
(4) It is suggested that, prior to mix proportion design and preparation of concrete using recycled concrete aggregates, it is necessary to obtain the details of demolished concrete such as its strength grade or water/binder ratio and of the characteristics of flaws in recycled aggregate induced by processing the demolished concrete.
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Materials | Special Issue : Concrete and Construction Materials
In this paper, a new recycled aggregate concrete (RAC) was produced with composite coarse aggregate and fine recycled aggregate. The composite coarse aggregate was mixed into continuous gradation by large particle natural aggregate with small particle recycled aggregate. To explore the time-dependent developments [...] Read more.
Effects of Recycled Aggregate on Concrete Mix and Exposure to
25-06-2019 · Concrete mix with 30% recycled aggregate had the lowest chloride penetration after 2 weeks of saturation and performed better than a concrete mix with 100% natural aggregate. Owing to the lower density and higher water absorption of recycled aggregates, chloride ion diffusion increased with increasing recycled aggregate content beyond 2 weeks.
Reclaimed Asphalt Concrete - User Guideline - Granular Base
RECLAIMED ASPHALT PAVEMENT User Guideline. Granular Base. INTRODUCTION. Reclaimed asphalt pavement (RAP) can be used as granular base or subbase material in virtually all pavement types, including paved and unpaved roadways, parking areas, bicycle paths, gravel road rehabilitation, shoulders, residential driveways, trench backfill, engineered fill, pipe bedding, and culvert backfill.