氢氧化钙激发再生微粉固化土的抗压强度研究

Study on the Compressive Strength of Regenerated Micropowder Solidified Soil Activated by Calcium Hydroxide

再生微粉是建筑垃圾破碎过程中产生的细小颗粒,具有潜在的活性,其活性激发是提高再生利用效率的关键。为探索再生微粉用于软土固化的可行性,本研究将再生微粉掺入土中并加入氢氧化钙作为激发剂,按不同的龄期进行养护。其间通过无侧限抗压强度试验,对不同掺量、不同龄期下再生微粉固化土强度特性进行分析。结果表明,加入激发剂后再生微粉固化土抗压强度较单纯加入再生微粉有了提升,并且随着龄期的增加而增大。

Regenerated micropowder is a small particle generated during the crushing process of construction waste,which has potential activity,its activation is the key to improving the efficiency of recycling and utilization.In order to explore the feasibility of using regenerated micropowder for soft soil solidification,this study incorporates regenerated micropowder into the soil and adds calcium hydroxide as an activator for curing at different ages.During this period,the strength characteristics of regenerated micropowder solidified soil at different dosages and ages are analyzed through unconfined compressive strength tests.The results show that the compressive strength of the regenerated micropowder solidified soil after the addition of activator is improved compared to the pure addition of regenerated micropowder,and it increases with the increase of age.