Bài báo trình bày kết quả tính toán nhu cầu tiêu thụ năng lượng và phát thải khí nhà kính (CO2, N2O và CH4) trong quá trình sản xuất hỗn hợp bê tông asphalt tái chế ấm (Warm Mix with RAP - WMRAP) và so sánh với hỗn hợp HMA. Phụ gia Zycotherm được lựa chọn cho công nghệ WMRAP với tỷ lệ sử dụng là %. Các tỷ lệ vật liệu RAP từ 20% đến 50% được sử dụng trong hỗn hợp WMRAP. | Đánh giá hiệu quả tiết kiệm năng lượng và giảm phát thải khí nhà kính của công nghệ bê tông Asphalt tái chế ấm Transport and Communications Science Journal Vol 71 Issue 05 06 2020 472-485 Transport and Communications Science Journal EVALUATION OF BENEFITS OF REDUCING ENERGY CONSUMPTION AND GREENHOUSE GAS EMISSIONS OF WARM MIX ASPHALT TECHNOLOGY USING RECLAIMED ASPHALT PAVEMENT Dao Van D1 Lu Thi Y1 Nguyen Ngoc L2 1 University of Transport Technology No 54 Trieu Khuc Street Hanoi Vietnam. 2 University of Transport and Communications No 3 Cau Giay Street Hanoi Vietnam. ARTICLE INFO TYPE Research Article Received 9 3 2020 Revised 26 5 2020 Accepted 2 6 2020 Published online 28 6 2020 https Corresponding author Email nguyenngoclan@ Tel 0902 119 278 Abstract. Currently in Vietnam almost asphalt pavement projects are using virgin non- renewable materials . aggregates and bitumen to produce conventional hot mix asphalt HMA . Meanwhile in developed countries such as United States European countries and Japan the tendency of replacing HMA technology with warm mix asphalt technology WMA combined with reclaimed asphalt pavement RAP is gaining attention. WMA can be produced and paved at lower temperatures reducing energy consumption and greenhouse gas emissions. The use of RAP can reduce the demand for non-renewable resources. This paper presents the results of energy demand and greenhouse gas emissions CO2 N2O and CH4 in the mixing process of warm mix asphalt with reclaimed asphalt pavement WMRAP in comparison with those of traditional HMA. Zycotherm a chemical additive was used in WMRAP technology with a dosage of by weight of the bituminous binder. Various RAP percentages in range of 20 50 were used in WMRAP. Based on the calculated results it was determined that WMRAP technology seems to have more environmental benefits in compare with traditional HMA. Process of WMRAP production provides a reduction of energy .
