抄録
In order to generate non-uniform self stress that is defferent in area of working zone, partial surface provided by controlling coating area of mortar beams was exposed to drying condition at first. Distribution of self stress thus generated was experimentally determined by measuring variation in strain when a part of a specimen was cut or notched. Next, beams were loaded flexurally and failure condition was examined. It was proved that the maximum tensile stress obtained by superposing stress due to external load upon the self stress did not serve as a failure criterion.
