The Study on the Water Immersing Time Impact over the Concrete Anti-Compression Strength with Rock-Drilling Method

摘要

Rock-drilling method, as an on-spot test method for structure concrete anti-compression strength is intensively applied in construction, water conservancy, navigation, ports and road building etc and diversified criterions assume prominent differences in preservative conditions before rock-drilling concrete anti-compression strength test. The research result concludes in case the core drilling samples of different diameters and strength are immerged in water up to saturated degree, the anti-compression strength (ACS) is considerably decreased, the smaller diameter and less strength concrete core samples show even worse quality against the original natural dried ones. Only by means of correctly understanding the tested project and better applying of the core drilling test technical criterion can the project structural concrete strength be optimistically mastered.