On the use of different types of recycled aggregates

The gap

Evidence profile

Sourced from the stated research gap and future-work section and limitations section and future work of the source papers, classified as general, drawn from work published between 2024 and 2026, spanning 4 journals.

Supporting evidence — 8 representative gaps

• Impact of Incorporating Recycled Fine Concrete Aggregate and Recycled Concrete Powder in Mortar: Technical and Environmental Impact Assessment (2026) · Circular Economy and Sustainability · doi

  There is a lack of research on the technical and environmental feasibility of incorporating fine recycled concrete aggregate and recycled concrete powder in mortar. The existing body of research on recycled materials in construction is limited. There is a need for further studies on the optimal replacement levels of fine recycled concrete aggregate and recycled concrete powder for improved mortar performance.

  generalstated research gap
  Keywords: there lack research technical environmental feasibility incorporating fine
• Recycled concrete aggregates derived from construction waste: potential applications in structural engineering (2026) · Journal of Science Technology and Engineering Mien Tay Construction University · doi

  The structural use of recycled concrete aggregates remains limited due to concerns regarding higher porosity, increased water absorption, and variability caused by adhered mortar. Long-term durability is a concern for recycled concrete aggregate concrete. There is a need for performance-based design methods that address stiffness reduction and durability.

  generalstated research gap
  Keywords: structural use recycled concrete aggregates remains limited due
• Recycled concrete aggregates derived from construction waste: potential applications in structural engineering (2026) · Journal of Science Technology and Engineering Mien Tay Construction University · doi

  Advancing recycled concrete aggregate processing to reduce adhered mortar and improve aggregate quality. Conducting long-term full-scale field testing under realistic environmental and loading conditions. Developing performance-based design methods that address stiffness reduction and durability. Investigating seismic and dynamic behavior at the structural system level, including soil-structure interaction.

  generalfuture-work section
  Keywords: advancing recycled concrete aggregate processing reduce adhered mortar
• Recycled concrete aggregates derived from construction waste: potential applications in structural engineering (2026) · Journal of Science Technology and Engineering Mien Tay Construction University · doi

  Long-term durability is a concern for recycled concrete aggregate concrete. Variability control and conservative design provisions are limitations of using recycled concrete aggregates. Increased creep and potential long-term issues such as steel corrosion remain concerns that necessitate careful mix design and monitoring.

  generallimitations section
  Keywords: long-term durability concern recycled concrete aggregate variability control
• Innovations in concrete structure design for sustainable construction practices (2024) · Journal of Civil Engineering and Urban Planning · doi

  The construction industry is facing a significant gap in terms of sustainable construction practices, with a need for innovative solutions to reduce environmental impacts and improve resource efficiency. The use of alternative cementitious materials, recycled aggregates, and advanced construction techniques is highlighted as a potential solution to address this gap.

  generalstated research gap
  Keywords: construction industry facing significant gap terms sustainable practices
• Recycled concrete aggregates derived from construction waste: potential applications in structural engineering (2026) · Journal of Science Technology and Engineering Mien Tay Construction University · doi

  3.2.1. Variability and quality control of recycled concrete aggregates A key limitation of recycled concrete aggregate (RCA) is its high variability, stemming from differences in source concrete quality, processing, and contamination. Unlike natural aggregates, properties such as density, water absorption, and strength largely depend on adhered mortar content and parent material characteristics [2, 39].

  generalfuture workevidence 5/5
  Keywords: concrete variability quality recycled aggregates control limitation aggregate high stemming differences source processing contamination unlike
• Mechanical and durability assessment of slag-based recycled aggregate concrete modified with glass fiber and alccofine (2026) · Journal of Building Pathology and Rehabilitation · doi

  The lack of studies on the use of multi-component optimization to enhance the performance and durability of recycled aggregate concrete. The need for more sustainable and durable construction materials. The limited understanding of the interactive effects of different materials on the properties of recycled aggregate concrete.

  generalstated research gapevidence 5/5
  Keywords: lack studies use multi-component optimization enhance performance durability
• Mechanical and durability assessment of slag-based recycled aggregate concrete modified with glass fiber and alccofine (2026) · Journal of Building Pathology and Rehabilitation · doi

  Further studies on the use of different types of recycled aggregates and their effects on the properties of concrete. Investigations into the long-term durability and performance of recycled aggregate concrete. Development of more advanced methodologies for optimizing the composition of recycled aggregate concrete.

  generalfuture-work sectionevidence 5/5
  Keywords: further studies use different types recycled aggregates effects

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