Hành Vi Nén Trục của Panel Sandwich Composite Sử Dụng Bê Tông Từ Tổng Hợp Thô Tái Chế

KSCE Journal of Civil Engineering - Tập 27 - Trang 5294-5306 - 2023
Pengpeng Yan, Jin Wu1, Dadi Lin1
1College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing, China

Tóm tắt

Tổng hợp thô được sản xuất từ chất thải xây dựng và phá dỡ của các công trình xây dựng gọi là tổng hợp thô tái chế hỗn hợp (MRA), chủ yếu bao gồm tổng hợp thô tái chế từ bê tông (CRA) và tổng hợp thô tái chế từ gạch (BRA). Bài báo trình bày kết quả của một nghiên cứu thực nghiệm và số học về panel sandwich composite được làm từ MRA. Panel sandwich composite với MRA (CSPMRA) đã được thử nghiệm dưới điều kiện nén trục để khảo sát ảnh hưởng của tỷ lệ phối trộn bê tông, độ dày của tấm cách nhiệt và khung viền bổ sung lên đường cong tải - biến dạng, đường cong tải - căng thẳng, sự dịch chuyển theo phương thẳng đứng, khả năng chịu tải tối đa và chế độ hỏng của CSPMRA. Kết quả từ phân tích thực nghiệm và phân tích phần tử hữu hạn (FEA) được so sánh với kết quả dựa trên mã Trung Quốc, phương trình thiết kế ACI và các phương trình kinh nghiệm khác được phát triển bởi các nhà nghiên cứu, có thể áp dụng để dự đoán tải trọng tối đa của các panel sandwich. Một phương trình bán kinh nghiệm đã được đề xuất để phù hợp hơn với kết quả thực nghiệm và kết quả FEA.

Từ khóa

#bê tông tái chế #tổng hợp thô tái chế hỗn hợp #panel sandwich composite #phân tích phần tử hữu hạn #khả năng chịu tải tối đa #hành vi nén trục

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