Large amount of slag is obtained during the production of ferrochromium. This by-product has properties comparable to natural aggregates. However, almost all of the ferrochromium slag is landfilled. The main objective of this study was to investigate the effects of ferrochromium slag aggregate on the mechanical properties and permeability of concrete. For this purpose, waste ferrochromium slag was used as aggregates in normal concretes and alkali-activated mixtures, with five different water/binder ratios. Concretes with limestone and Portland cement were produced as references. Mechanical properties of the concretes were determined. Chloride permeability and resistivity tests were performed. The results indicate that the strengths of the mixtures were similar to each other for given water/binder ratios. Rapid chloride permeabilities of the mixtures were close to each other, except for high water/binder ratios. Electrical resistivities of the mixtures were recorded. A strong relationship between electrical resistivity and chloride permeability was obtained. The results confirmed that the ferrochromium slag aggregates may be successfully used in concretes ranging from low-strength to higher strength classes.

在生产铬铁期间获得大量炉渣。该副产物具有与天然聚集体相当的性质。但是，几乎所有的铬铁渣都被填埋了。这项研究的主要目的是研究铬铁矿渣骨料对混凝土力学性能和渗透性的影响。为此，废铬铁渣被用作普通混凝土和碱活化混合物中的骨料，具有五种不同的水/粘结剂比。用石灰石和波特兰水泥制成的混凝土作为参考。确定了混凝土的机械性能。进行了氯化物渗透性和电阻率测试。结果表明，对于给定的水/粘合剂比例，混合物的强度彼此相似。混合物的氯化物快速渗透性彼此接近，除了高的水/粘合剂比率。记录混合物的电阻率。获得了电阻率和氯化物渗透率之间的强关系。结果证实，铬铁矿渣骨料可成功用于从低强度到较高强度等级的混凝土。