Tổng quan về ứng dụng cốt liệu tái chế và bê tông cốt liệu tái chế trong xây dựng

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Tác giả: VĂN TÌNH NGÔ, THANH SANG NGUYỄN

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Xây dựng, 2024

Mô tả vật lý: tr.56

Bộ sưu tập: Báo, Tạp chí

ID: 380299

Thêm vào giỏ Liên kết toàn văn

Sử dụng cốt liệu tái chế từ chất thải phá dỡ công trình xây dựng có thể bảo tồn tài nguyên cốt liệu tự nhiên, giảm nhu cầu chôn lấp và góp phần xây dựng môi trường xây dựng bền vững. Nghiên cứu này cung cấp cái nhìn tổng quan về cốt liệu tái chế (RA) và bê tông cốt liệu tái chế (RAC) với: tính chất của vật liệu (tính chất vật lý, hóa học và cơ học), và các ứng dụng trong xây dựng. Ngoài ra, các phương pháp cải thiện tính chất cơ lý của RAC cũng được đề cập, bao gồm: giảm độ xốp của cốt liệu tái chế, số lượng lớp vữa cũ trên cốt liệu tái chế và cải thiện tính chất mà không cần điều chỉnh cốt liệu tái chế (tức là phương pháp trộn bê tông và bổ sung cốt thép). Hơn nữa, một số ứng dụng RAC tiên tiến nhất, những hạn chế và thách thức của ứng dụng RAC cũng được xem xét. Cuối cùng, triển vọng nghiên cứu và ứng dụng RAC trong tương lai tại Việt Nam và trên thế giới cũng sẽ được thảo luận. Từ khóa: Cốt liệu tái chế
bê tông cốt liệu tái chế
tính chất cơ học
cường độ chịu nén
ứng dụng cốt liệu tái chế.Using recycled aggregate from construction and demolition waste can conserve natural aggregate resources, reduce the need for landfills and contribute to a sustainable built environment. This study provides a comprehensive overview of recycled aggregate (RA) and recycled aggregate concrete (RAC) in terms of: properties of materials (physical, chemical, and mechanical properties), construction application. In addition, methods to improve the mechanical properties of RAC are also mentioned, including: reducing the porosity of recycled aggregates, the quantity of old mortar layer on recycled aggregates and improving properties without adjusting recycled aggregates (i.e. concrete mixing methods and reinforcement addition). Furthermore, some state-of-the-art RAC applications, the limitations and challenges of the RAC application are also considered. Finally, future research prospects and applications of RAC in Vietnam and around the worldare discussed. Keywords: Recycled aggregate
recycled aggregate concrete
mechanical Properties
compressive strength
application.

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