2015 年 83 巻 2 号 p. I_19-I_24
In this study, we investigates the relationship between the degree of degradation of biodegradable resin mortar and exposure conditions in order to use the mortar for temporary materials such as piles and sheet piles. The differences in exposure conditions had a strong correlation with the degree of degradation in the specimens and the rate of mass change, and the surface degradation and the mass changing were caused by microbial biomass. However, the effect of the exposure conditions on strength reduction was small because microbial degradation was very low. Therefore the degradation mechanism of the initial exposure was due to the reduction in bond strength between the biodegradable resin and aggregates by water, and the surface degradation and gradual strength reduction after two months of exposure was due to microbial degradation.
