No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
By incorporating recycled coarse aggregate (RCA) derived from construction and demolition waste into concrete, waste reduction and natural resource conservation is achieved. ... Table 3 presents the characteristics of different aggregates. These properties include bulk density, specific gravity, water absorption, abrasion loss, crushing value ...
AbstractThe present study illustrates the susceptibility of optimized-quality recycled concrete aggregate (RCA) to supplementary cementitious materials (SCMs), such as silica fume (SF), ground granulated …
In this paper, a comprehensive literature review was conducted on the utilization of recycled concrete aggregate (RCA), which is the dominant construction and demolition waste …
This chapter emphasizes the physical and mechanical characteristics of recycled aggregate along with findings of different researchers. The physical properties such as …
The characteristics of recycled coarse aggregates and its effect on performance of recycled concrete. J Building Mater. 2005;17(5):390–5. Google Scholar Marta SJ, Pilar AG. Influence of attached mortar content on the properties of recycled concrete aggregate. In: Proceedings of international conference on sustainable waste management and ...
Recycled concrete aggregates (RCA) sourced from waste concrete are a sustainable alternative to natural crushed stone aggregates. The strength and durability …
AbstractWith the rise in the adoption of recycled aggregate for construction, investigation on ways to improve its quality has been wide spread. ... The concrete made out of these treated aggregates are able to achieve strength and performance characteristics on par with natural aggregate concrete. Get full access to this article. View all ...
Exploring the interplay between shapes and crushing characteristics of recycled aggregates (RA) is pivotal for understanding their macro-mechanical behavior in bulk materials. This investigation quantitatively characterizes the shapes of recycled bricks (RB), recycled concrete (RC), and recycled mortar (RM) particles, and assesses their single ...
Key parameters examined include workability, compressive strength, flexural strength, split tensile strength, microstructural characteristics (XRD, SEM, EDAX), and …
Both these benefits, i.e., lower HCMP and regular shape characteristics, were found to significantly affect the strength properties of recycled aggregate concrete. However, due to cleavage failure in compression crushing, coarser RCA with higher concentrations of blade and disc-shaped particles and higher HCMP content were produced.
Recycled aggregate (RA) is a viable alternative to natural aggregate, which helps in the preservation of the environment. One of the critical parameters that affect the use of …
Over the past decade or so, there has been growing interest in multi-recycling of concrete in order to achieve true sustainable development. The concept of repeated recycling of concrete is as follows: recycled coarse and fine aggregates obtained by crushing concrete waste, mainly natural aggregate concrete, are used to replace natural aggregates in the production of …
This paper discusses the suitability of producing concrete with 100 % recycled aggregate to meet durability and strength requirements for different applications. Aggregate strength, gradation, absorption, specific gravity, shape and texture are some of the physical and mechanical characteristics that contribute to the strength and durability of concrete. In general, …
The utilization of recycled aggregates (RA) in concrete industries can be considered a feasible approach that supports the sustainable progress of these sectors, as evidenced by prior research [11], [12].Although the use of recycled aggregate (RA) in concrete offers significant sustainability advantages, it is important to understand the fundamental …
The water absorption (WA) is an important physical property of aggregates. Hence, it was determined by means of three methods. The first one is the pycnometer method according to standard NF EN 1097-6 [21].The second one is the method of hydrostatic weighing continuously (HWC) used to follow the evolution of mass change of aggregates during their …
In this study, four concrete mixes were prepared. R1 containing 20% recycled aggregate, R2 containing 30% recycled aggregate, R3 containing 40% recycled aggregate and N1 containing 0% recycled aggregate. All of the mixes containing recycled aggregate were reinforced by using waste plastic fibers of 0.5% by weight of cement.
Recycled aggregates and particularly, recycled concrete aggregate substantially affect the properties and mix design of concrete both at fresh and hardened states since it is known by high ...
By collecting the used concrete and breaking it up, recycled concrete aggregate (RCA) is created (Fig. 1). This paper focuses on coarse RCA which is the coarse aggregate …
Internal corrosion characteristics of endogenous sulfate introduced by recycled aggregates in recycled aggregates concrete: Insights into the macro-mechanical and meso-mechanical properties. Author links open overlay panel Jing Jiang a, Yaogang Tian a b, Dong Lu c, Xin Lu a, Kuo Ji a, Kan Jia a b, Jun Zhang d.
This study investigates the potential of incorporating recycled fine aggregates (RFA) into sustainable concrete. In this research, a conventional compaction technique is utilized to establish the order of compressive strength and, consequently, to assess particle packing density in terms of weight within a specific cylindrical volume and evaluate workability, compressive …
In this paper, some characteristics of recycled coarse aggregates obtained by crushing waste ready-mix concrete, as well as the mechanical and curability properties of recycled concretes made by ...
In this study, the characteristics of recycled aggregate concrete according to the mixing ratio of recycled coarse aggregate(RCA) were analyzed for different design strengths to explore the use of recycled materials in the production of ready-mixed concrete. The results show that, depending on the ratio of recycled aggregate, the compressive strength is similar to that …
This review examines the impact of recycled aggregates (RAs) on the fresh and mechanical properties of high-strength concrete (HSC). The results revealed that incorporating RAs can reduce the compressive strength of HSC by up to 25%, with strength values ranging from 40 to 70 MPa depending on the RA content. The addition of supplementary materials like …
Recycled aggregate is prepared with waste concrete by crushing, screening, and removing impurities. Using waste concrete to produce recycled aggregate concrete can reduce the consumption of natural aggregate and promote the effective consumption of construction waste [1].However, because old mortars are attached to recycled aggregate, the mechanical …
Notably, mechanical characteristics studies indicate that RAC can match the. incorporation of supplementary materials and innovative techniques. Durability studies have. …
Recycled concrete is a green material composed of natural aggregate and recycled aggregate mixed with cementing material and water in a certain ratio. The random distribution of aggregate in concrete has a great impact on material properties due to its supporting effect. In order to explore the characteristics of aggregate and the influence of its …
The pursuit of sustainable construction practices has led to a growing interest in the utilization of recycled materials in concrete production. To enhance the utilization of recycled aggregate concrete, its performance in terms of mechanical characteristics need to be optimized. This study investigates the effect of fly ash and ground granulated blast furnace slag (GGBS) …
Concrete waste (CW) recycling stands as a promising strategy to promote sustainable construction practices. This research aims to assess the feasibility of using recycled concrete aggregates (RCA) as a surrogate for natural aggregates (NA) in concrete applications and reduce the environmental impact associated with the depletion of natural resources and …
Behavioral characteristics are determined by crack mouth opening displacement and the load–deflection method. This research identifies the fracture parameters of 33 notched simply supported beams made by recycled aggregate cement concrete with steel fiber. ... The recycled aggregate ratio in concrete has been altered to determine the effect ...
Crushing waste concrete into recycled fine aggregate (RFA) and recycled coarse aggregate to replace traditional building materials is a key measure to promote the sustainable development of the civil engineering industry [3].Recently, there has been a lot of research into replacing natural coarse aggregate with recycled coarse aggregate to prepare recycled …
