Recycling of Cement Kiln Dust as a Raw Material for Cement
Abstract and Figures. Cement kiln dust (CKD) is a major by-product of cement manufacturing and has the potential to be recycled as a raw material if the high concentrations of chlorine and ...
Total recycling of concrete waste using accelerated carbonation: …
Abstract. Our world is facing critical environmental challenges due to the overexploitation of natural resources and the extensive release of CO 2. Meanwhile, …
Sustainable Materials: A Review of Recycled Concrete Aggregate
Abstract. In this paper, a comprehensive literature review was conducted on the utilization of recycled concrete aggregate (RCA), which is the dominant construction …
Chemical recycling and use of various types of concrete
Abstract. Concrete is one of the most widely used materials globally, and therefore huge amounts of concrete waste, which is usually strongly alkaline, are generated. Concrete waste recycling and ...
EFFECT OF RECYCLED CONCRETE AGGREGATE QUALITY ON PROPERTIES OF CONCRETE
ABSTRACT. The possibility of the use of recycled aggregates from the construction industry in green concrete production is of increasing importance to reduce the negative environmental impact associated with construction and demolition wastes. The objective of this study is to investigate the effect of recycled concrete aggregate …
Research on crushing and recycling of waste concrete
Currently, one method of recycling waste concrete is to crush, clean, and grade waste concrete to obtain recycled aggregate particles. The particles with a size less than 4.75 mm after crushing ...
Crystals | Free Full-Text | Use of Recycled Concrete Aggregates …
Recycled concrete aggregates (RCA) are used in existing green building composites to promote the environmental preservation of natural coarse aggregates (NCA). Besides, the use of RCA leads to potential solutions to the social and economic problems caused by concrete waste. It is found that insufficient information on the longevity and …
Reuse Of Construction and Demolished Waste as Aggregates in Concrete…
Abstract and Figures. This paper presents reviews of the authors for the use of construction and demolished waste of building in concrete as recycled coarse aggregates. It is observed that from ...
Fast enhancement of recycled fine aggregates properties by wet
Accelerated carbonation for recycled concrete aggregate (RCA) was one of the effective and economic solutions for improving the quality of RCA and its concrete products. Previously, a fast wet carbonation method was developed and proved to be effective for property enhancement of the coarse fraction of RCA by transforming the …
Handbook of Recycled Concrete and Demolition Waste
Chapter 9: Preparation of concrete aggregates from construction and demolition waste (CDW) Abstract: 9.1 Introduction. 9.2 Technological aspects of concrete recycling. 9.3 Uses of recycled construction and demolition waste (CDW) materials. 9.4 Economic aspects of recycled aggregate for concrete. 9.5 Environmental aspects of recycled aggregate ...
(PDF) Concrete Recycling
Performance and Properties of Structural Concrete made with Recycled Concrete Aggregate. Article. Sep 2003. ACI MATER J. A. Shayan. A. M. Xu. View. Show abstract. PDF | On Jan 1, 2006, Ay Lie …
Recycling of Concrete Wastes toward Sustainable …
This Special Issue aims to collect the original research that contributes to the performance evaluation of recycled aggregate, recycled powder and its newly prepared cementitious materials, which helps the …
The Complete Recycling of Waste Concrete to Produce Geopolymer Concrete
Abstract. This paper investigates complete recycling and utilization of waste concrete, both the aggregates and the fines from crushing, to produce new concrete through geopolymerization. Based on previous studies and considering the workability of the new geopolymer concrete (GPC), 25% waste concrete fines (WCF), and 75% class-F fly ash …
(PDF) Recycling of concrete construction and demolition waste in
The feasibility study on the recycling of concrete waste as a component of a blended binder is presented in Part 1 of the study. ... [Show full abstract] The strength effect of concrete of various ...
Recycled Aggregates from Construction and Demolition Waste in …
Abstract and Figures. ... The recycling of concrete, bricks and masonry rubble as concrete aggregates is an important way to contribute to a sustainable material flow. However, there are still ...
Environmental benefits of construction and demolition debris recycling
Show abstract. Traditional demolition techniques face challenges in effectively separating steel and concrete components of steel-reinforced concrete (SRC) structures. To address this issue, our research group has developed induction heating demolition (IHD) technology, a method allowing for environmentally sustainable and …
Chemical recycling and use of various types of concrete waste: A …
This review article assesses methods to recycle and reuse concrete waste to amend and stabilize soil, produce new construction materials, purify and neutralize water, treat gases, and sequester and use CO 2. It was noted that extensive improvements exist for chemical recycling and the use of concrete waste. The reactions and mechanisms …
Contamination Problems in the Recycling of Concrete
Abstract. Concrete rubble has the possibility of being contaminated by a variety of foreign materials. The presence of contaminants should be considered when old concrete is to be incorporated into new, and an assessment made of their potential undesirable interactions, if any, under the anticipated service conditions of the new concrete ...
A Comprehensive Review on Recycled Aggregate and
Additionally, recycled concrete fines (RCF), a by-product generated during the crushing and recycling process of concrete wastes, accounts for approximately 20-30% of concrete wastes by mass [4 ...
Total recycling of concrete waste using accelerated carbonation: …
Alongside the interest in recycling RCAs and RCFs, awareness of re-utilizing recycled concrete powders (RCPs) (<0.15 mm) has also risen over recent years. The review of the literature has revealed that RCPs contain an even higher amount of residual cement paste than RCFs and are thereby closer to the nature of hydrated cement …
(PDF) Recycling of e-waste in concrete
Abstract and Figures. Chapter 8 provides an overview of current practices in recycling e-waste in concrete. E-waste encompasses a number of materials, including cathode ray tubes, liquid crystal ...
Recycled aggregates from construction and demolition
Nevertheless, concrete, mortar, and red ceramics are the main components of CDW, reaching above 70% by weight [20]. Fig. 1 shows a CDW pile and concrete waste from construction and demolition at Reciclax Recycling Plant in Ribeirão Preto, Brazil.
Recycling of ceramic tiles waste and marble waste in sustainable
[Show full abstract] implications on concrete. Thus, resistance of concrete against the seawater can be improved by adding supplementary cementitious materials (SCM) like copper slag, coal bottom ...
Recycling of concrete
In this chapter, we give a brief overview of concrete as a composite material and make the case for recycling concrete. The likely future trends in, and drivers for, …
Closed-loop recycling of C&D waste: Mechanical properties of concrete
Studies have been conducted on the repeated recycling of recycled coarse aggregates and recycled fine aggregates obtained from concrete waste, but no research has been conducted on the repeated recycling of recycled powder as a partial replacement for cement, which is pointed out as a major source of CO 2 in the concrete industry. …
(PDF) Reuse of Construction and Demolished …
[Show full abstract] were used to make concrete to investigate the recycled concrete strength. Moreover, six different types …
Recycled Concretes Made with Waste Ready-Mix Concrete as …
Abstract. Using waste materials for new products is a global trend undergoing rapid development. Recycling materials allows for a more efficient life cycle and contributes to environmental protection. ... SP219: Recycling concrete and other materials for sustainable development, T. C. Liu and C. Meyer, eds., American Concrete Institute ...
Properties and possible recycling of solid waste from ready-mix concrete
abstract = "Due to more restrictive environment legislation, many ready-mix concrete suppliers are often obligated to find adequate means of handling, recycling and marketing their waste solids. This paper discusses the nature, properties and possible uses of the fine fraction of the waste slurry.
Frontiers | Sustainable usage of demolished concrete waste as a …
1.1. C&D materials. The various types of C&D materials used are discussed below: 1.1.1. Use of demolished concrete. In the United States and European countries, the quantity of concrete demolished every year is about 50–60 million tons, respectively (Kawano, 2003; Robinson et al., 2004).At present, only a very meager quantity of …
Reinforcing concrete with recycled plastic wastes
Reusing plastics as concrete additives could also redirect old water and soda bottles, the bulk of which would otherwise end up in a landfill. Research has focused on the impact of adding plastic material to fresh and hardened concrete. This study aims to investigate the use of polyethylene terephthalate (PET) wastes in concrete. Export ...