By Vince Ingenito. Ninety hours. Thatâs how long it took me to roll the credits on Dragon Age: Inquisition. Though itâs true that quality canât be measured purely in terms of quantity, that number is still significant.
Concrete Burns. When working around fresh, wet concrete there is always the potential for concrete to. come into direct contact with your skin and eyes. Contact of the skin with fresh concrete, mortar, or grout can lead to severe burns and are a hidden danger to anyone who works. with, or around these materials. Causes.
1 Even though only a small concentration of alkali is present, the alkali will become concentrated in the drying zone of the concrete and may be sufficient to initiate reaction. ( 2 Farny and Kosmatka, 1997). 3  Use fly ash, natural pozzolans, granulated blast-furnace slag, or silica fume as a cement replacement.