Use Of Recycled Coarse Aggregate In Concrete
Recycled concrete aggregate (RCA) construction helps builders reduce waste and increase the life of builders, as well as save disposal fees. It also reduces transportation costs because often...
اقرأ أكثر
Carbonated recycled coarse aggregate and uniaxial compressive stress
Recycled coarse aggregate for concrete (GB/T 25177-2010), China Architecture & Building Press, Beijing, 2010. Google Scholar [36] L. Butler, J. West, S. Tighe, Quantification of Recycled Concrete Aggregate (RCA) Properties for Usage in Bridges and PavementsAn Ontario Case Study, Innovative Developments in Sustainable Pavements Session of the ...
اقرأ أكثر
Improving bond strength of recycled coarse aggregate concrete …
This paper investigates theoretically and experimentally the influence of using basalt fiber (BF) on bond strength of recycled coarse aggregate (RCA) concrete. The natural aggregate (NA) was replaced by RCA with 20 %, 40 %, 60 %, 80 %, and 100 %. BF was added with three different percentages. Ninety concrete cubes were tested under pull-out ...
اقرأ أكثر
Preparation of Recycled and Multi-Recycled Coarse Aggregates Concrete
The reuse of construction and demolition waste has become vitally important because of the requirements of environmental protection and sustainable development. The vibration mixing process is a new technology and novel method that improves the performance of concrete by optimizing the mixing process without changing constituents. This study discusses …
اقرأ أكثر
Use Of Recycled Aggregate In Concrete
the recycled aggregate. The use of recycled aggregate generally increases the drying shrinkage creep & porosity to water & decreases the compression strength of concrete compared to that of natural aggregate concrete. It is nearly 10-30% as per replacement of aggregate. Recycling reduces the cost (LCC) by about 34-41% & CO 2 emission (LCCO 2
اقرأ أكثر
Recycled Coarse Aggregates in Concrete: A Comprehensive …
Addressing the increasing demand for concrete due to advancements in the construction sector and population growth, this research explores the critical intersection of waste management and sustainable construction practices. By incorporating recycled coarse aggregate (RCA) derived from construction and demolition waste into concrete, waste reduction and …
اقرأ أكثر
Property Enhancement of Recycled Coarse Aggregate and Its Concrete …
The poor properties of recycled coarse aggregate (RCA) and recycled coarse aggregate concrete (RCAC) are considered key constraints hindering the reuse of this waste resource in marine engineering. The CO2-based accelerated carbonation method, which utilizes the alkali aggregate properties of RCA to achieve CO2 uptake and sequestration while …
اقرأ أكثر
A Comprehensive Review on Recycled Aggregate and …
This study provides a comprehensive review on recycled aggregate (RA) and recycled aggregate concrete (RAC) regarding their history, recycling, reuse and manufacture …
اقرأ أكثر
Sustainable Construction Exploration: A Review of Multi-Recycling …
This paper provides an overview of literature on the multiple-time recycling of concrete waste and meticulously analyzes the research findings. The paper begins by reviewing the characteristics of recycled materials such as recycled coarse aggregate, recycled fine aggregate, and recycled powder obtained from concrete waste in relation to the recycling …
اقرأ أكثر
Sustainable building materials-recycled aggregate and concrete…
Figure 1 counts the number of papers about recycled concrete materials and recycled concrete in the Elsevier database in 20 years (related paper terms include recycled concrete coarse aggregate, recycled concrete fine aggregate, recycled concrete powder, and recycled concrete). Many relevant literature reports have demonstrated the excellent ...
اقرأ أكثر
(PDF) RECYCLED AGGREGATE CONCRETE (RAC): …
Therefore, recycling coarse aggregate from CDW in concrete is one of the sustainable solutions to prevent a serious threat to the environment due to the extraction of aggregates and ...
اقرأ أكثر
Use of recycled aggregate concrete in structural …
Recycled Coarse Aggregate for Concrete (GB/T 25177-2010). China: National Standards of People's Republic of China. (Open in a new window) Google Scholar. Chinnu, S. N., S. N. Minnu, A. Bahurudeen, and R. …
اقرأ أكثر
Properties of concrete incorporating recycled coarse …
Great efforts are made to utilize waste in the construction industry for many different reasons, including the limited non-renewable sources of concrete constituents and getting rid of the burdens of deploying waste and its environmental impact. This study aims to assess the suitability of using recycled coarse aggregate (RCA) and plastic waste (PW) as fine …
اقرأ أكثر
Recycled Aggregate: A Viable Solution for Sustainable Concrete …
As with C&DW, aggregates obtained from geopolymers are a viable option for the development of AR replacing NA. This information was highlighted in the research by Xu et al., where the authors evaluated the possibility of producing artificial aggregates using geopolymer aggregate concrete for light coarse aggregate. Although the mechanical ...
اقرأ أكثر
Recycling Concrete Pavements and Utilizing Recycled …
(April 3, 2020) The practice of recycling concrete pavements and using processed recycled concrete aggregate (RCA) within new pavement structures is considered a standard and essential practice by the ... The primary application of RCA has been for base/subbase layers, but it is also used as coarse aggregate in concrete and asphalt surface ...
اقرأ أكثر
Experimental study on recycled coarse aggregate of concrete
For making recycled coarse aggregate, concrete from a nearby site was used in a testing machine and then by hand with hammers. The broken aggregates are then put through 20 mm, 16 mm, 10 mm, and 4.75 mm sieves, and the aggregates that stay in the 16 mm, 10 mm, and 4.75 mm sieves are used as recycled coarse aggregates that meet IS383-1970 ...
اقرأ أكثر
Recycling Concrete Pavements and Utilizing Recycled …
Concrete pavement recycling is an environmentally sustainable choice in terms of energy and other life-cycle impacts. It can reduce the mining, use, and transportation of aggregate, …
اقرأ أكثر
Enhancement of properties of recycled coarse aggregate concrete using
4.4 Properties of fine and recycled coarse aggregate. Locally available sand (fine aggregate) conforming to IS: 383-1970 [Citation 46] is collected from a nearby river and used in the present study. For recycled coarse aggregate, the parent concrete is crushed through a mini jaw crusher maintaining the size of aggregate between 20 and 4.75 mm.
اقرأ أكثر
Recycled Concrete Aggregate
Recycled aggregate concrete (RAC) is concrete made with recycled concrete aggregate (RCA) instead of natural aggregate (NA). RCA are aggregates obtained by recycling of clean concrete …
اقرأ أكثر
Recycled Coarse Aggregates in Concrete: A Comprehensive …
By incorporating recycled coarse aggregate (RCA) derived from construction and demolition waste into concrete, waste reduction and natural resource conservation is achieved. …
اقرأ أكثر
Recycling of Concrete (Recycling Coarse Aggregate)
Recycled aggregates are a way of reusing materials by keeping them from being disposed into landfills [1]. Recycling of concrete is a simple process. It involves breaking, removing, and …
اقرأ أكثر
Improving recycled coarse aggregate (RCA) and recycled coarse aggregate
Recycled aggregate (RA), including recycled fine aggregate (RFA) and recycled coarse aggregate (RCA), is generated by crushing old concrete from C&D wastes [2], [3]. Recycled aggregate concrete (RAC) uses RA to partly …
اقرأ أكثر
Effect of Modification and Replacement Rate of Recycled Coarse
The modification method and the replacement rate of recycled coarse aggregate (RCA) have a great influence on the properties of recycled aggregate concrete (RAC). This paper aims to study the properties of RAC changes with the replacement rate and analyze the modification mechanism. Composite impregnation treatment was carried out for RCA using …
اقرأ أكثر
Effects of elevated temperature on performance of recycled coarse
The main parameters considered in this study were; i) the type of coarse aggregate (i.e., natural aggregate or recycled aggregate) with varying proportions, ii) the type of cementitious material (i.e., GP, MP or RHA) to substitute 20% of OPC in concrete mixture containing recycled coarse aggregates and iii) the amount of waste steel wires ...
اقرأ أكثر
Recycled Aggregate Concrete | PPT
7. Classification & properties of recycle aggregate concrete Material composition is the basis for classification of recycled concrete aggregate in two main types- 1) Crushed concrete 2) Mixed material Each of these types is divided in a class for bound and a class for unbound use Crushin g age Bulk specific gravity Bulk density Absorp tion (%) Crushin g value(% ) 1 days …
اقرأ أكثر
Treatment of recycled concrete aggregate to enhance concrete …
Nevertheless, utilizing recycled aggregates at a full replacement level may cause a reduction in its fresh, mechanical, and durability characteristics compared to concrete produced with normal coarse aggregate (NCA). Recycled concrete aggregate (RCA) is distinguished from NCA by the presence of adhered mortar [7], [8].
اقرأ أكثر
Impact resistance of recycled coarse aggregate concrete …
As urbanization and infrastructure development accelerate, the renovation, transformation, and demolition of old buildings have increased the production of construction waste, primarily composed of concrete [1].To address this issue, waste concrete is recycled and processed into recycled coarse aggregates (RCA), which are sieved, cleaned, and reused to …
اقرأ أكثر
Mechanical performance of recycled aggregate concrete in …
Reusing reclaimed brick coarse aggregate (RBCA) concrete has great significance for the green development of our country. The research on RCCA concrete has matured, and …
اقرأ أكثر
Recycled coarse aggregate from waste concrete …
Recycled coarse aggregate was prepared by cold bonding pelleting technology. Combining the construction waste treatment with MICP technology, a method of using microbes to strengthen recycled coarse aggregate was proposed, improving the comprehensive qualities and turning construction waste, such as waste concrete, into treasures.
اقرأ أكثر
Strength and durability of concrete containing recycled concrete
Duan et al. [47] proposed an ANN model to predict the compressive strength of RCA concrete by accounting for the mass of water, cement, sand, natural coarse aggregate and recycled coarse aggregate, water-cement ratio (w/c), fineness modulus of sand, water absorption of aggregates, saturated surface-dried density, maximum size of RCA, impurity ...
اقرأ أكثر