This research aims to utilize rice husk ash as a cementitious materials in recycled aggregate concrete (RAC). Rice husk ash was ground until the particles remained on a No. 325 sieve were 4.6%wt. Then, the ash was used to partially replace cement at 20 to 50%wt of binder to cast concrete. The compressive strength, steel corrosion, and chloride penetration depth by the impressed voltage method of RAC were examined. The results revealed that the replacement of 20% of ordinary Portland cement (OPC) by ground rice husk ash (GRHA) enhances the compressive strength of the RAC to be greater than the RAC without GRHA at 60 days. Concrete with GRHA at 20 to 50%wt of binder significantly improved the steel corrosion and chloride resistance of the RAC. The utilization of GRHA at 50% to replace OPC gave the highest chloride penetration resistance and produced the lowest steel corrosion of the RAC. Although, the RAC with GRHA had less compressive strength than CT concrete, the concrete provided a positive effect of increasing the resistance of chloride penetration and lowering steel corrosion.

这项研究旨在利用稻壳灰作为再生骨料混凝土（RAC）中的胶结材料。研磨稻壳灰，直到残留在325号筛上的颗粒为4.6重量％。然后，使用灰分以粘合剂的20至50％（重量）部分替代水泥，以浇筑混凝土。通过RAC的外加电压法检测了其抗压强度，钢腐蚀和氯化物渗透深度。结果表明，在60天时，用稻壳灰粉（GRHA）替代20％的普通波特兰水泥（OPC）可以提高RAC的抗压强度，使其高于没有GRHA的RAC。含有20％至50％wt的GRHA的混凝土可显着改善RAC的耐钢腐蚀性和耐氯化性。以50％的比例使用GRHA代替OPC可获得最高的耐氯化物渗透性，并且产生的腐蚀最低。尽管GRHA的RAC的抗压强度比CT混凝土低，但混凝土具有增加氯离子渗透阻力和降低钢腐蚀的积极作用。