 The study found that borax is the best retarder for alkali-activated slag, AS. It can effectively prolong the setting time of AAS more than that of sucrose and citric acid, and its retarding effect increases with increasing dosage. Sucrose and citric acid have a negative impact on AAS's unconfined compressive strength and flexural stress. The negative effect becomes more apparent with the increase in dosage. This article was offered by Pei Qingli, Da Yongchen, Zhurong Jia, and others.