石灰石粉混凝土抗碳化性能因素分析

摘要

By orthogonal test,the factors affecting the carbonation resistance of limestone concrete were analyzed and the importance of the factors was judged. Carbonation time,content of limestone powder and water-binder ratio were selected to do the orthogonal test. The results show with the content of limestone powder,water-cement ratio and the carbonation time increasing,the carbonation resist-ance of limestone concrete recedes severely and the influence of the water-binder ratio on the carbonation depth of limestone concrete is remarkable.%利用正交试验，对影响石灰石粉混凝土抗碳化性能的因素进行分析，并对这些因素的重要性进行判定。选定碳化时间、石灰石粉掺量以及混凝土的水胶比这三个因素进行正交试验。结果表明，石灰石粉的掺量越多、水胶比越大、碳化时间越长，混凝土的抗碳化性能越弱，同时石灰石粉混凝土的水胶比对碳化深度的影响较为显著。