日本混凝土工学协会于1981年6月组织了以长泷重义为首的第二届裂缝调查研究委员会,针对大坝混凝土以外的大体积混凝土的温度、温度应力、裂缝等问题进行了调查、计算和试验研究。在四年多的时间里,共召开了102次专题讨论会,37次委员会全体会,于1985年制订出《大体积混凝土裂缝控制准 The Japan Society of Concrete Engineers organized the second crack investigation and research committee headed by Masayuki Nagai in June 1981. It investigated and calculated the temperature, temperature stress and cracks of mass concrete outside the dam concrete. Experimental Research. In more than four years, a total of 102 symposiums were held and 37 committee meetings were convened. In 1985, the “mass concrete crack control standard was established.