Abstract: This paper describes a recently completed project to construct a new access road on the premises of a former Jute Mill, which was used to demonstrate the feasibility of using recycled concrete aggregates in new concrete construction from a technical standpoint and in terms of effecting cost savings (the large volume of concrete would normally have been crushed before going …
This study investigates the feasibility of using recycled concrete aggregate (RCA) as a partial substitution of natural aggregate in pavement engineering. Despite RCA's good properties, such as polishing value and freeze-thaw resistance, its use is limited by low resistance to fragmentation and high-water absorption. This paper parent the experimental results of mineralogical-petrographic ...
Determining Pavement Design Criteria for Recycled Aggregate Base and Large Stone Subbase ... and large stone subbase (LSSB) layers. Overall, this project found that finer recycled concrete aggregate (RCA) material would be preferable to coarser RCA material and a blend of RCA and recycled asphalt pavement (RAP) materials would be preferable to ...
Using recycled pavement as aggregate in new concrete mixes can save money and promote environmental sustainability. New design methods published in a new research report allow engineers to create more durable mixes from recycled aggregate than in the past, reducing the need for aggregate, a diminishing and expensive resource.
Kho Pin Verian and Jan Olek, Using Recycled Concrete as Aggregate in Concrete Pavements to Reduce Materials Cost, FHWA/IN/JTRP- 2013/18 Renga Rao Krishnamoorthya, and Dr. Thevaneyan Krishta David, Repair of Deteriorating Pavement Using Recycle Concrete Materials, Science Direct, Procedia Engineering 142 ( 2016 ) 371 382.
wastes produced in North Central Nigeria in bituminous asphaltic concrete (BAC) used in flexible pavement construction were also evaluated. The mix design consists of 60/70 penetration-grade asphaltic concrete (5%), 68% coarse aggregate, 6% fine aggregate, and 21% filler using the dry process at 170°C. The optimum bitumen
recycling and use in the construction of conventional cement concrete pavements (PCC – plain cement concrete) and roller compacted concrete pavements (RCC). An important benefit resulting by using recycled aggregates in pavement engineering is the reduction of the impact of …
Aggregate makes up between 60 to 80% of the entire mass of the ultimate concrete product and as natural resources begin to diminish and become more expensive to procure there becomes a need to find alternative sources for the fine and coarse aggregates and RAP is a good alternative source for rigid pavement.
Pavement Applications This is the Accepted version of the following publication Yaghoubi, Ehsan, Arulrajah, A, Wong, YC and Horpibulsuk, S (2017) Stiffness Properties of Recycled Concrete Aggregate with Polyethylene Plastic Granules in Unbound Pavement Applications. Journal of Materials in Civil Engineering, 29 (4). ISSN 0899-1561
Utilisation of recycled concrete aggregates (RCA) for highway pavement construction has been a sustainable attempt towards conservation of the natural resource base as well as mitigation against the environmental problems associated with harmful solid waste disposal.
Recycled Concrete Aggregate (RCA) RCA is mostly obtained from concrete pavements. Stiff and angular material composed of natural aggregates with adhered mortar. Generally free of other materials. Fines from the mortar fraction can cause "self-cementation" or "re-cementation" when water is added.
Asphalt is the surfacing material for flexible pavements. It is basically a mixture of aggregates and bituminous binder. Substitution of natural aggregates with recycled concrete aggregates (RCA) promises to be of much benefits as aggregates make up to 85% of asphalt mixtures (Das et al., 2019; Rafi et al., 2011).
The conventional method of providing bituminous surfacing on flexible pavements requires significant amount of materials and energy. Therefore, in order to reduce consumption of fuel and aggregates, pavement recycling technology may be adopted for Indian roads (Reddy et al., 2013). Also, there is a problem of the scarcity of aggregates, which ...
Report BC409 (October 2001) - Use of Recycled Concrete Made With Florida Limestone Aggregate For A Base Course In Flexible Pavement; Participation in the Federal Highway Administration National Review of Recycled Concrete Aggregate. The purpose of this review is to capture for technical deployment the most advanced uses of recycled concrete ...
The consumption of the NCA itself is rising up through the years. Concrete structures and road construction are some of the most consuming aggregate material, especially NCA. Therefore, aggregate such as recycled concrete aggregate (RCA) has become an alternative material for some particular civil construction.
PAPER OPEN ACCESS Characterization of Recycled Concrete Aggregate as Potential Replacement of Natural Aggregate in Asphalt Pavement To cite this article: Gilberto Martinez-Arguelles et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 471 102045 View the article online for updates and enhancements.
The utility of the plastic waste blended bitumen-aggregate mix for flexible pavement construction was characterized by studying stripping value and Marshall Stability value of the mix for the blends having a maximum of 1.5% plastic waste. Plastic waste was dissolved in …
The recycling and reuse of this waste will provide relief from environmental problem of disposal. The aggregates that are recycled from C&D waste are called as recycled concrete aggregates (RCA). The construction of flexible pavement could be one of the potential avenues in which bulk utilization of C & D waste may be feasible.
Flexible pavement - in which bituminous bound materials are placed over granular base and sub-base layers and supported by sub grade. The load is absorbed and distributed with depth. ... recycled concrete aggregate was found from 2.35 to 2.58 which are lower as compared to natural aggregates. Since the RCA from demolished concrete
Recycled concrete aggregate (RCA) is one of the alternatives to material that has engendered interest in recent years, especially as an alternative aggregate. There are limited available studies assessing the suitability of RCA as a base or subbase material in pavements. Therefore, the present research describes different laboratory experiments to determine the possibility of using RCA ...
The recycling of concrete pavements—crushing of old concrete slabs and reusing the crushed material in some other pavement application—has been used in the U.S. since the 1970s (Hoerner et al. 2001). At that time, common reasons for concrete recycling were noted to be
aggregate is uniformly graded to provide for a stable and impermeable surface. The aggregate can be treated and the asphalt binder can be modified. HMA could be made from new or recycled material. Examples of recycled asphalt include, but are not limited to reclaimed asphalt pavement and cold in-place recycling.
Recycled aggregates can be used in the construction of unbound and bound layers of road pavements. Quality control of the recycled mixture without a binder and re quirements specification are ...
RAP is the removed pavement material containing asphalt and aggregate. Concrete mixes were produced with replacement ratios of RAP at (0%, 15%, 30%, …
cement, clean river sand, water and coarse aggregate. In this research, the road structure is made up from flexible pavement. The research was carried out to upgrade the standard concrete material with the recycle concrete material that can be applied to within the study area. The recycle concrete materials come from industrial waste.
Use of recycled concrete aggregates (RCA) as a pavement material is one of the most sustainable engineering applications for the pavement industry. Investigation on the performance characteristics of RCA, such as elastic and plastic deformations of RCA is therefore, needed to assess RCA's application as an unbound pavement material. In this study, repeated load tri-axial (RLT) tests were ...
of new pavements and rehabilitation of existing pavements; both rigid and flexible. It provides a guide for determining new pavement structures similar to the ones shown in Figure 1-1. The design procedures provided will include the determination of the total pavement thickness as well as the
Chapter 9. Application of Recycled Concrete Aggregates in Flexible Pavements (Chidozie Maduabuchukwu Nwakaire, Soon Poh Yap, Chiu Chuen Onn, Choon Wah Yuen – University of Malaya, Malaysia) Chapter 10. Pulsed Power Technology for Reproducing High-Quality Recycled Aggregate (Eva Arifi, Mitsuhiro Shigeishi – Universitas Brawijaya, Indonesia)
19.2.1 Recycled concrete aggregate (RCA) Coarse RCA complies to the requirements of maximum 5% masonry content, 5% fine materials, 0.5% lightweight material, 5% asphalt, 1% foreign material and 1% acid soluble sulfate, and is suitable for use in concrete as per BS 8500-2 (2006). In designated concrete RC20/25 to RC40/50, RCA can automatically ...
Crushed recycled concrete can also be used as the dry aggregate for brand new concrete if it is free of contaminants. Also, concrete pavements can be broken in place and used as a base layer for an asphalt pavement through a process called Rubblization. 9.
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