- 張 競，李 駿
2022年第7期
摘要
引用本文
摘 ? 要：將經過濃度為4%的NaOH溶液堿化處理過的稻草纖維作為加筋材料用于尾砂充填體試件的制備，研究了灰砂比、堿化稻草纖維的長度和摻量對尾砂充填體試件抗壓強度的影響，并借助掃描電鏡（SEM）從微觀角度分析了堿化稻草纖維的作用機理。結果表明：隨著堿化稻草纖維摻量的增加，試件的抗壓強度下降；隨著堿化稻草纖維長度的增加，試件的抗壓強度先增大后減??；未堿化稻草纖維對試件抗壓強度的降低程度顯著大于堿化稻草纖維；隨著灰砂比的減小，試件的抗壓強度降低。
Abstract: The straw fiber alkalized by 4% NaOH solution was used as reinforcement material for the preparation of tailings backfill specimens. The effects of cement-sand ratio, length and content of alkalized straw fiber on the compressive strength of tailings backfill specimens were studied, and the action mechanism of alkalized straw fiber was analyzed by SEM. The results show that the compressive strength of the specimen decreases with the increase of the alkalized straw fiber content. With the increase of the length of alkalized straw fiber, the compressive strength of the specimen first increases and then decreases. The reduction degree of the compressive strength of the specimen by the non-alkalized straw fiber is significantly greater than that of the alkalized straw fiber. With the decrease of cement sand ratio, the compressive strength of the specimen decreases.
張競,李駿.堿化稻草纖維對尾砂充填體力學性能的影響[J].混凝土與水泥制品,2022(7):60-63.
ZHANG J,LI J.Effect of Alkalized Straw Fiber on Mechanical Properties of Tailings Backfill[J].China Concrete and Cement Products,2022(7):60-63.
