Bacterial growth within a new cement matrix

摘要

The high pH of cement within a new cement matrix, which ranges from 11 to 13, has traditionally been considered to prevent the growth of micro-organisms in new concrete. Recent research in this field has reported on the addition of bacteria into the matrix as a self healing addition, or the study of micro-organisms within the matrix following environmental exposure. However, this study is the first to report observations of filamentous bacterial growth within new, unplaced marine concrete - See Figure 1. Durability of marine concrete is arguably its most important property. It is crucial that concrete is capable of withstanding harsh conditions throughout the structure's expected life. Bacteria may represent a threat to this ability.