(gÉrÄ­l`É) [Span.,=little war], fighting by groups of irregular troops (guerrillas) within areas occupied by the enemy. When guerrillas obey the laws of conventional warfare they are entitled, if captured, to be treated as ordinary prisoners of war; however, they are often executed by their captors.
The Inside Story â Concrete Is Porous. Most people do not realize that concrete is porous â more porous than Swiss cheese! The pores constitute 12 â 18% or more of the concrete but they are invisible, much smaller than the diameter of human hair. After new concrete is poured, almost half of the water has to evaporate.
Step One: Determine if your concrete is porous enough to absorb the stain. The best way to do this is to drip a few drops of water on it. If it absorbs after a few minutes, it good to stain.If the water beads up and wonât absorb, then you need to strip and etch it.tep One: Determine if your concrete is porous enough to absorb the stain. The best way to do this is to drip a few drops of water on it. If it absorbs after a few minutes, it good to stain.