Application of entire concrete waste reuse model to produce recycled aggregate class H

Koshiro, Yasumichi; Ichise, Kenichi

doi:10.1016/j.conbuildmat.2014.05.072

Cited by 21 publications

(8 citation statements)

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“…Crushed concrete for recycling and reuse could cause secondary wastes due to the fact that not all the sizes of RAs could be reused. Koshiro and Ichise [135] attempted to address this issue by adopting the entire waste reuse model through utilizing different sizes of RAs in cement composites (e.g., clay tiles). However, there have been so far limited studies addressing how RAs from different sources, sizes, and compositions could be efficiently utilized to enhance their reuse rate.…”

Section: Enhancing the Reuse Rates Of Rasmentioning

confidence: 99%

Adopting recycled aggregates as sustainable construction materials: A review of the scientific literature

Chen

Jin

et al. 2019

Construction and Building Materials

134

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Adopting a holistic three-step literature review workflow, a total of 1,639 journal articles were used in this study as the literature sample related to recycled aggregate (RA). This study summarized the existing research topics focusing on RA, gaps of current research, suggestions for promoting RA usage, and research directions for future work. A research framework was also proposed linking the existing research themes into trends in RA research. This review work serves as a foundation work to bridge the gap between scientific research and industry practice, as well as to guide the directions in RA-related academic work using an interdisciplinary approach.

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Section: Enhancing the Reuse Rates Of Rasmentioning

confidence: 99%

Adopting recycled aggregates as sustainable construction materials: A review of the scientific literature

Chen

Jin

et al. 2019

Construction and Building Materials

134

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“…Koshiro and Ichise [ 25 ] employed a heat grinder system for the processing of concrete waste from a demolished building, which resulted in FRCA with density of 2.57 g/cm 3 and water absorption of 2.52%. Their results demonstrate the efficacy of heat grinder systems in the production of high-quality FRCA suitable for the structure of new buildings.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Different Fine Recycled Concrete Aggregates on the Properties of Mortar

et al. 2015

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The practical use of recycled concrete aggregate produced by crushing concrete waste reduces the consumption of natural aggregate and the amount of concrete waste that ends up in landfills. This study investigated two methods used in the production of fine recycled concrete aggregate: (1) a method that produces fine as well as coarse aggregate, and (2) a method that produces only fine aggregate. Mortar specimens were tested using a variety of mix proportions to determine how the characteristics of fine recycled concrete aggregate affect the physical and mechanical properties of the resulting mortars. Our results demonstrate the superiority of mortar produced using aggregate produced using the second of the two methods. Nonetheless, far more energy is required to render concrete into fine aggregate than is required to produce coarse as well as fine aggregate simultaneously. Thus, the performance benefits of using only fine recycled concrete aggregate must be balanced against the increased impact on the environment.

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“…For this reason, it is crucial to study the elements influencing the quality of RA. Increasing the number of crushing times in a cone crusher, using a heated grinding method [ 26 ], and increasing the number of treatments [ 27 ] all contribute to improving the quality of RA. The attached porous mortar is the main reason for the poor performance of RA.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Durability of Geopolymer Recycled Aggregate Concrete: A Review

et al. 2023

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Geopolymer recycled aggregate concrete (GPRAC) is a new type of green material with broad application prospects by replacing ordinary Portland cement with geopolymer and natural aggregates with recycled aggregates. This paper summarizes the research about the mechanical properties, durability, and microscopic aspects of GPRAC. The reviewed contents include compressive strength, elastic modulus, flexural strength, splitting tensile strength, freeze–thaw resistance, abrasion resistance, sulfate corrosion resistance, and chloride penetration resistance. It is found that GPRAC can be made to work better by changing the curing temperature, using different precursor materials, adding fibers and nanoparticles, and setting optimal mix ratios. Among them, using multiple precursor materials in synergy tended to show better performance compared to a single precursor material. In addition, using modified recycled aggregates, the porosity and water absorption decreased by 18.97% and 25.33%, respectively, and the apparent density was similar to that of natural aggregates. The current results show that the performance of GPRAC can meet engineering requirements. In addition, compared with traditional concrete, the use of GPRAC can effectively reduce carbon emissions, energy loss, and environmental pollution, which is in line with the concept of green and low-carbon development in modern society. In general, GPRAC has good prospects and development space. This paper reviews the effects of factors such as recycled aggregate admixture and curing temperature on the performance of GPRAC, which helps to optimize the ratio design and curing conditions, as well as provide guidance for the application of recycled aggregate in geopolymer concrete, and also supply theoretical support for the subsequent application of GPRAC in practical engineering.

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Application of entire concrete waste reuse model to produce recycled aggregate class H

Cited by 21 publications

References 0 publications

Adopting recycled aggregates as sustainable construction materials: A review of the scientific literature

Adopting recycled aggregates as sustainable construction materials: A review of the scientific literature

The Effects of Different Fine Recycled Concrete Aggregates on the Properties of Mortar

Mechanical Properties and Durability of Geopolymer Recycled Aggregate Concrete: A Review

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