NGHIÊN CứU BƯỚC ĐẦU VỀ ỨNG DỤNG XỈ CỦA NHÀ MÁY SẢN XUẤT THÉP TRONG XÂY DỰNG MẶT ĐƯỜNG BÊ TÔNG NHỰA Ở VIỆT NAM

 Abstract - Currently, Vietnam's economy is developing strongly, along with the development of construction industry. The metallurgy industry must also develop in response to the great demands of construction. Therefore, the scrap of the metallurgical industry is also increasing. These substances, if not handled properly, will pollute the environment and harm health ... Steel slag is a by-product of the process of iron (cast iron) or scrap steel) into molten steel in a furnace. This process aims to remove impurities such as Al, Si, P, ... so that steel products achieve the necessary physical and mechanical properties. The amount of slag discharged in this process accounts for about 15% of the volume of steel products. In our country, it is estimated that currently there are about 1-1.5 million tons of steel slag discharged every year from large steel factories. According to the development plan of Vietnam's steel industry, which was approved by the Prime Minister in 2007, by 2025, steel products produced domestically will reach 12-15 million tons, which means that there will be about 1.8 - 2.25 million tons of steel slag are discharged into the environment. These solid waste dumps occupy large areas of land and lead to serious environmental impacts with large amounts of dust and rust, heavy metals. Therefore, the recycling and utilization of steel slag is considered to be really necessary to meet the economic and environmental goals at the same time. However, for our country, the research on the application of steel slag in the construction of pavement structures is not much, there are no technological documents and processes on the application of steel slag in the construction of road works. The study of modern technology solutions, selecting and proposing the application of slag of steel factory in building pavement structure in Vietnam is necessary.

Từ khóa:bê tông nhựa; xỉ thép; nhà máy sản xuất thép.

Thông tin liên lạc của tác giả:

Họ và tên (tác giả số 1):         ThS. Nguyễn Tuấn Hiển

Chức danh:                            Giám đốc

Cơ quan:                                Phòng TN TĐ ĐB II - Viện KH&CN GTVT

Địa chỉ:                                   1252 Đường Láng – Đống Đa – Hà Nội

Điện thoại:                             0913.300.066

E-mail:                                    hienitst2@gmail.com