Cheap fillers are added to concrete mixes to improve sustainability. Durability of such mixes is investigated. In this paper the sulfate resistance of mortar mixes containing crushed limestone and crushed dolomite fillers is investigated and compared to that of conventional mortar. Mortar mixtures with different ratios of dolomite or limestone of 10, 20, and 30%, introduced as partial cement replacement by weight, were tested to evaluate the effect of sulfate attack according to ASTM C 1012. Six prisms of each mix were exposed to sulfate for 10 weeks. It was concluded that the introduction of lime filler greatly reduces sulfate resistance while mixes containing dolomite fillers have almost the same sulfate resistance as conventional mixes.
展开▼
机译：廉价的填料被添加到混凝土混合物中以改善可持续性。研究了这种混合物的耐久性。本文研究了含有碎石灰石和碎白云石填料的砂浆混合物的耐硫酸盐性，并与常规砂浆进行了比较。根据ASTM C 1012，测试了作为白水泥重量替代品引入的白云石或石灰石比例不同的10、20和30％的砂浆混合物，以评估硫酸盐侵蚀的效果。每种混合物的六个棱镜暴露于硫酸盐中持续10周。结论是，引入石灰填料大大降低了耐硫酸盐性，而含有白云石填料的混合物具有与常规混合物几乎相同的耐硫酸盐性。
展开▼
