Nội dung nghiên cứu của bài viết này là trình bày kết quả nghiên cứu cơ sở khoa học thiết kế, tính toán, thi công và nghiệm thu cọc cát biển-xi măng tro bay. Cơ sở khoa học để thiết kế cọc là xem xét vai trò của cọc trong xử lý nền, nghĩa là sử dụng cọc với vai trò cải tạo nền đất yếu hay gia cố nền đất yếu. | Journal of Mining and Earth Sciences Vol. 61 Issue 6 2020 1 - 9 1 Research to build technological procedure for soft ground improvement using sea sand-cement-fly ash column Thinh Duc Ta 1 Phuc Dinh Hoang 1 Thang Anh Bui 1 Trang Huong Thi Ngo 1 Diu Thi Nguyen 2 1 Faculty of Civil Engineering Hanoi University of Mining and Geology Vietnam 2 University of Transportation and Communications Vietnam ARTICLE INFO ABSTRACT Article history Sea sand-cement-fly ash column technology for soft soil treatment is a Received 15th Oct. 2020 new technology in the process of completing the theoretical basis the Accepted 23rd Nov. 2020 experimental basis and the construction of the ground treatment Available online 31st Dec. 2020 technological procedure. The paper presents the results of scientific Keywords research on design calculation construction and acceptance of sea Improvement sand-cement-fly ash column. The scientific basis for the design of column Reinforcement is to consider the role of the column in composite ground that is to use the column as soft ground improvement or soft soil reinforcement. The Sea sand-cement-fly ash important parameters for the column design are cement and fly ash column content column length column diameter number of columns distance Soft ground among columns load capacity and settlement of composite ground. The Technological procedure. sequence of steps of construction and acceptance of column includes selection of construction equipment preparation of construction sites trial construction official construction evaluation of ground quality after treatment and preparation of document for acceptance. Copyright 2020 Hanoi University of Mining and Geology. All rights reserved. ___________ Corresponding author E - mail taducthinh@ DOI 2 Tạp chí Khoa học Kỹ thuật Mỏ - Địa chất Tập 61 Kỳ 6 2020 1 - 9 Nghiên cứu xây dựng quy trình công nghệ xử lý nền đất yếu bằng cọc vật liệu hỗn hợp cát biển-xi măng-tro bay Tạ
