Bài viết Xây dựng công thức dự báo hệ số thấm của bê tông rỗng dựa trên định hướng dữ liệu thiết lập dạng xấp xỉ của phương trình thấm Kozeny– Carman cho vật liệu bê tông xi măng rỗng; Xây dựng tập dữ liệu gồm 195 mẫu bê tông rỗng với các tỷ lệ hỗn hợp khác nhau được tổng hợp từ các tài liệu quốc tế mở và có uy tín để chuẩn hóa các tham số của phương trình. | Tạp chí Khoa học Giao thông vận tải Tập 73 Số 2 02 2022 176-188 Transport and Communications Science Journal PREDICTING THE PERMEABILITY OF PERVIOUS CONCRETE BASED ON A DATA-DRIVEN APPROACH Vu Thai Son1 Vu Viet Hung2 Nguyen Tuan Cuong2 Truong Dinh Thao Anh3 Tran Bao Viet4 1 Department of Bridges and Highways Engineering Hanoi University of Civil Engineering 55 Giai Phong Hai Ba Trung Hanoi Vietnam 2 Campus in Ho Chi Minh City University of Transport and Communications No. 450-451 Le Van Viet Street Tang Nhon Phu A Ward Thu Duc City Ho Chi Minh City Vietnam 3 Faculty of Civil Engineering Saigon Technology University No. 180 Cao Lo Street Ward 4 District 8 Ho Chi Minh City Vietnam 4 University of Transport and Communications No 3 Cau Giay Street Hanoi Vietnam ARTICLE INFO TYPE Research Article Received 15 12 2021 Revised 18 01 2022 Accepted 07 02 2022 Published online 15 02 2022 https Corresponding author Email viettb@ Tel 84911451080 Abstract. To increase the permeable capability of surface layers the permeability should be considered when defining a pervious concrete PC mixture proportion. Due to the complexity of the PC structure the available models in the literature are not enough to predict exactly the permeability coefficient. Therefore this paper aims to develop a simple analytical model to predict the permeability of the PC from its compositions. In order to achieve this purpose the two main parts of this study were proposed as follow 1 A close form solution of the Kozeny Carman equation-type was carried out to evaluate the relationship permeability-porosity of the pervious concrete structure 2 A relevant dataset of 195 pervious concrete samples with different mix proportion ratios was built from a large amount of data sources collected from the reputable and open international literature to refine the free parameters of the theoretical model proposed. Then the present models predicting permeability of the PC structure
