不同比例铁尾矿粉掺量对砂浆和易性及力学性能影响研究OA

In order to improve the properties of cement mortar,the fluidity,compressive and flexural strength of iron tailings powder in cement mortar were tested to analyze the influence trend of iron tailings powder on the properties of cement mortar,and the results showed that the flu-idity,compressive strength and flexural strength of cement mortar increased first and then decreased with the increase of the proportion of iron tailings powder,and reached the maximum when the proportion of iron tailings powder was 20%.At the same time,it is found that the appro-priate amount of iron tailings powder can promote the cement hydration reaction through the physical dilution effect,and improve the early strength and fluidity of the mortar,but too high the content will reduce the strength of the mortar due to the reduction of the cement ratio,and the optimal dosage is recommended to be 20%.