Evaluation of Durability of Concrete through the Nation-wide Testing and Local Climate Monitoring

本研究的目的是通过全国范围内的测试和当地气候监测来评估混凝土的耐久性。试验从2003年开始，至今仍在进行中。通过这些调查，澄清了以下结论。（1）无论是夏季还是冬季，筑波的气候条件都比栗滨的气候条件要恶劣得多。也就是说，筑波在冬季比栗滨冷，而筑波在夏季比栗滨热。（2）因此，筑波暴露对混凝土抗压强度的影响显著大于栗滨暴露。

The purpose of this study is to evaluate the durability of concrete through the nation-wide testing and local climate monitoring. The test has been started since 2003, and still continuing.From these investigations, following conclusion was clarified.(1)The climate condition at Tsukuba was much severe than that at Kurihama in both summer and winter. In other word, Tsukuba was colder than Kurihama in winter season, and Tsukuba was hotter than Kurihama in summer season.(2)Therefore, the compressive strength of concrete exposed in Tsukuba were remarkably influenced more than that in Kurihama.