In this report, the opening situation of documents relating to materials and construction for concrete to internet was investigated. In these documents, statutes, standards, relating information and papers which were published by academic organizations are included. At the results of survey, before and after 2000, most organizations opened the documents. JIS can be red and JAS is open only in the latest version. Papers are opened in all organizations, but as for other documents, the term and method for opening on the internet depend on the organization.
