日本西拿奈公司开发出一种混凝土抗菌剂 ,只要将它掺到混凝土中 ,就可起到防止微生物腐蚀、延长混凝土使用寿命的目的。用作水下管道的钢筋混凝土管的受腐蚀速度为 1.1ｍｍ/ａ ,其主要原因是下水道中生存的硫杆菌等硫磺氧化细菌把钢筋混凝土管上的硫化氢转变为硫酸 ,腐蚀混凝土 Nissan Corporation of Japan has developed a concrete antibacterial agent, so long as it is incorporated into concrete, it can prevent microbial corrosion and prolong the service life of concrete. The corrosion rate of reinforced concrete pipes used as underwater pipelines is 1.1mm/a. The main reason is that sulfur-oxidizing bacteria such as Thiobacillus that survive in sewer pipes transform hydrogen sulfide on reinforced concrete pipes into sulfuric acid and corrode concrete.