This paper reviews the potential use of silico-manganese slag (SiMnS) as binder and aggregate in Portland cement and geopolymer concrete. SiMnS is a byproduct of alloy steel production. Depending on the process of solidification, the slag is available in crystalline hard stone type and granulated glassy form. The latter one is more reactive due to the presence of amorphous phases. Therefore, granulated slag has been mostly used as supplementary cementitious material, either blending with clinker or as a precursor for alkali activated binder. Whereas the former is less reactive, and has been mostly used as aggregate, which can enhance the properties of the concrete. The reactive component such as CaO and SiO2 improve the binding capability of the cement gel. The leaching of toxic and heavy metals from the SiMnS reacted binder matrix is not reported. This paper also highlights the future potential of this slag by a process called slag engineering to modify its chemistry similar to granulated blast furnace slag (GBFS), to be utilized more effectively.

本文回顾了硅锰渣 (SiMnS) 在波特兰水泥和地质聚合物混凝土中作为粘合剂和骨料的潜在用途。SiMnS 是合金钢生产的副产品。根据凝固过程的不同，炉渣有结晶硬石类型和粒状玻璃态。由于非晶相的存在，后者更具反应性。因此，粒状矿渣主要用作补充胶凝材料，与熟料混合或作为碱活化粘合剂的前体。而前者反应性较小，主要用作骨料，可以增强混凝土的性能。CaO和SiO2等反应性组分提高了水泥凝胶的结合能力。没有报道从 SiMnS 反应的粘合剂基质中浸出有毒和重金属。