Department of Bridge and Highway, Faculty of Civil Engineering, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam.
Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam.
Environ Sci Pollut Res Int. 2022 Jun;29(28):42067-42073. doi: 10.1007/s11356-021-16706-0. Epub 2021 Dec 2.
Steelmaking slag is one of the most massive industrial by-products generated during steelmaking processes. This paper presents the current steelmaking slag production status and its potential to use as mineral aggregates in base/sub-base layer of road pavement. The mechanical properties of steelmaking slag were confirmed by the test method specified in Vietnam specification. The volume stability test of the slag was conducted based on JIS A 5015-2018 (Japanese Industrial Standard: Iron and steel slag for road construction). From the results, it was confirmed that steelmaking slag can satisfy all the mechanical requirements specified in Vietnam specification and the requirements regarding stability specified in JIS A 5015-2018. In addition, it was found that the elastic modulus of steelmaking slag applied as a base or sub-base layer in pavement was higher than that of the conventional graded aggregate made from mineral aggregate. Therefore, the thickness of pavement can be reduced by using steelmaking slag, and the construction cost can be lower.
炼钢渣是炼钢过程中产生的最大工业副产品之一。本文介绍了当前炼钢渣的产量状况及其作为道路路面基层/底基层集料的潜在用途。通过越南规范规定的测试方法，对炼钢渣的力学性能进行了确认。根据 JIS A 5015-2018（日本工业标准：道路用钢铁渣）进行了渣的体积稳定性测试。结果表明，炼钢渣可以满足越南规范规定的所有力学要求以及 JIS A 5015-2018 规定的稳定性要求。此外，还发现用作路面基层或底基层的炼钢渣的弹性模量高于由矿物集料制成的常规级配集料。因此，使用炼钢渣可以减少路面的厚度，降低施工成本。
