Abstract
The accident in the Sasago Tunnel in 2012 was a tragic event in which the tunnel ceiling panels collapsed, victimizing nine people. It provided us a very important opportunity to face the problem of aging civil infrastructures, bringing the issue to light and calling for the attention of the public. Under the lead of the government, a variety of measures have been implemented since then, ranging from promotion of technical development to review on the related laws and regulations. This report outlines the problem of aging civil infrastructures and its social circumstances, and introduces useful technologies own by Taiheiyo Cement Group.
