Singers in Russian Military Choir Among 92 Feared Dead After Plane Crashes Into Black Sea. Russian Military Plane Crashes into Sea. Shortly after takeoff on Sunday morning, a Russian military plane carrying 92 people crashed into the Black Sea near Sochi.
Keywords: chloride in concrete, near-infrared spectrometry, rapid determination. 1. INTRODUCTION. 1.1 Background. Penetration of chloride ions into concrete is a well-known problem, because it eventually results in. corrosion of rebars, leading to cracks, spalling, delamination and other roadway defects [1]. The problem is. particularly acute in bridge decks, which are subject to frequent salt applications during the winter months.
Chlorine is a powerful oxidising agent. It normally occurs as a gas but can be liquefied under pressure at ambient temperatures. As a dry gas it does not tend to be aggressive towards stainless steels, but as either a damp gas or dissolved in water it can be a corrosion hazard. Chlorine readily forms chlorides when in contact with gases such as methane, hydrogen sulphide and ammonia. Hydrochloric acid (HCl) can also be formed by these reactions.