Therefore, the research on RB-CAC prepared by recycled mixed aggregate is particularly important, and the research object is novel. Therefore, based on the engineering application status of RB-CAC in cold regions, this paper carried out freeze-thaw-load coupling test, uniaxial compression constitutive test and acoustic emission …
To implement sustainability concepts in the construction industry, the possibility of utilizing the recycled fine aggregate obtained from the crushing of coarse aggregate debris of concrete was explored in this paper. As there are no specific codes for mortar made by utilizing this recycled fine aggregate (RFA), experimentation was …
The use of recycled aggregate concrete can save natural resources and reduce environmental pollution, which has been widely concerned in recent years.…
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).
Recycled aggregate concrete. Attached mortar. Mechanical properties. Aggregate reinforcement. 1. Introduction. In the last decades, a large-scale …
The recycling of waste in concrete prevents the depletion of natural resources, preserves the environment and also manages the disposal of waste. As aggregates in concrete are in higher volume, hence using construction and demolition waste (CDW) as recycled aggregate would make concrete construction more sustainable.
The crushing characteristics of each aggregate are fundamental for predicting its load–displacement behavior and selecting suitable recycled aggregates for various earth works.
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 …
Laboratory tests are performed to investigate the effects of a new method of mixture proportioning on the creep and shrinkage characteristics of concrete made with recycled concrete aggregate (RCA). In this method, RCA is treated as a two component composite material consisting of residual mortar and natural aggregate; accordingly, …
In-situ computerized tomography (CT) and digital volume correlation (DVC) were used to investigate meso -scale damage characteristics of LCCRA under uniaxial compression. The results demonstrated that this concrete has a higher compressive strength than the ordinary recycled aggregate concrete (ORAC).
1. Recycled concrete aggregate (RCA) which is produced by crushing sound, clean demolition waste of at least 95% by weight of concrete and having a total contaminant …
In this paper, a comprehensive literature review was conducted on the utilization of recycled concrete aggregate (RCA), which is the dominant construction …
Malaysian is one of the develop countries that need to face environmental pollution. Have many ways to reduce environmental pollution that causes by production of Portland cement and cause by the increasing of waste material. Geopolymer concrete incorporating with recycle concrete aggregate (RCA) is one of the method. Waste Paper Sludge Ash …
The effects of recycled fine aggregate (RFA), recycled coarse aggregate (RCA), and their interaction on fracture parameters, AE characteristics and fracture process zone (FPZ) of concrete were comparatively analyzed.
Semantic Scholar extracted view of "Pore characteristics of recycled aggregate concrete and its relationship with durability under complex environmental factors" by Jiangang Wang et al.
Highlights. •. Recycled aggregate is a sustainable solution for environmental depletion of construction sector. •. Properties of recycled aggregates can be improved by different …
Study on pore characteristics of recycled aggregate concrete mixed with glazed hollow beads at high temperatures based on 3-D reconstruction of computed tomography images
Recycled aggregate concrete (RAC) is an alternative to using natural aggregate (NA) in concrete. Recycled concrete aggregate (RCA) are aggregates obtained by recycling clean concrete waste where content of other building waste must be very low – below few per cent. For instance, British standard BS 8500-2 (BSI, 2006) defines RCA as recycled …
This research aimed to utilize evaluate the performance of sustainable high-performance concrete reinforced with steel fibers which is produced with recycled aggregate. Crushed stone aggregates are supplanted with recycled aggregates extracted from source concrete that had compression strength of 45 MPa and 85 MPa at …
AbstractThe permeability performance made of recycled aggregate pervious concrete with macropores (M-RAPC) relates greatly to the macropore structure and seepage behaviors. However, the mechanism of the influence of pore structure on the permeability of M-...
Semantic Scholar extracted view of "Study on fracture characteristics and fracture mechanism of fully recycled aggregate concrete using AE and DIC techniques" by Yingjie Xu et al.
The result shows that replacing the natural aggregate with the recycled one up to the ratio of 30% satisfies the quality standard for mixing concrete properly.
This study provides a comprehensive review on recycled aggregate (RA) and recycled aggregate concrete (RAC) regarding their history, recycling, reuse and manufacture process, inherent defects (e.g. existing of additional interfacial transition …
This chapter emphasizes the physical and mechanical characteristics of recycled aggregate along with findings of different researchers. The physical properties …
"Characteristics of high-performance steel fiber reinforced recycled aggregate concrete utilizing mineral filler"Nowadays, a lot of buildings are demolished to make room for new ones. As this trash is useless, recycled aggregates are employed in this paper along with mineral filler for construction purposes.
Request PDF | Effects of fine aggregate content on the unsaturated hydraulic characteristics of recycled concrete aggregate | Recycled concrete aggregate (RCA) can be used in landfill and slope ...
The use of recycled building demolition wastes (BDWs) as unbound aggregate materials (UAMs) is one of the resource-conserving, economical, and eco-friendly alternatives for pavement base/subbase construction. The mesoscale strength and crushing properties of individual coarse aggregate particles significantly affect …
Travakoli and Soroushian [1] reported characteristic properties, volume utilization and moisture content of recycled aggregates. De Oliveira and Vazquez [2] discussed about concrete made with recycled aggregates attains the good strength compared to the conventional mix ratio.
Rahman worked on mechanical characteristics of roller compacted low carbon concrete with recycled aggregate. It was believed that the developed recycled aggregate based roller compacted low carbon concrete can be used as an alternative material for pavement construction [15].
Recycled aggregate (RA) made from waste concrete is an environmentally friendly alternative to natural aggregate (NA) for concrete manufacturing. However, compared to NA concrete, concrete produced with recycled aggregates has poor characteristics.
Recycled concrete aggregate (RCA) has been widely used as a resource in reinforced soil structures, especially as a substitute for natural aggregate. Direct shear …
This paper presents a statistical analysis of the compressive strength of recycled aggregate concrete (RAC) with recycled coarse aggregate (RCA) coming from one single source.
The study showed that the recycled aggregates can be used in rigid pavements also and the inclusion of fibers can benefit the fatigue performance of recycled aggregate concrete.
The compaction of recycled aggregate specimens comprising three structural types was evaluated using heavy Marshall compaction (HMC) and Superpave gyratory compaction (SGC). The compaction characteristics and particle breakage were examined, enabling a profound understanding of the compaction mechanisms associated with both methods.
The present study will increase awareness among researchers and readers about the fracture toughness, fracture energy, modulus of elasticity, and strength characteristics of steel fibers reinforced recycled aggregate concrete.
The results show that both the recycled coarse aggregate replacement rate and the water-cement ratio adversely affect the chloride erosion resistance of RAC. The chloride diffusion coefficient model based on pore structure characteristic parameters exhibits high prediction accuracy.
The main objective of this study is to investigate the recycled aggregate (RA) effect on asphalt mixture compaction behavior under different engineering …
