[18p-Z18-1~16] 8.5 Plasma phenomena, emerging area of plasmas and their new applications

[18p-Z18-14] Improved strength of mortar fabricated from cement for ultrahigh-strength concrete after irradiation with atmospheric-pressure plasma jet

〇(M1)Kota Ogawa¹, Tomoki Toyama², Tetsuro Kasai², Hiroshi Kuwahata¹ (1.Tokai Univ., 2.tokai Univ.)

Keywords:atmospheric-pressure plasma, mortar

Mortar fabricated from cement for ultrahigh-strength concrete used in the construction of tall buildings was irradiated with an atmospheric-pressure argon (Ar) plasma jet for 1 min before water curing. As a result, the strength of the mortar increased approximately 1.2-fold. It was found that irradiating mortar fabricated from cement for ultrahigh-strength concrete with an atmospheric-pressure Ar plasma jet is effective for improving the strength of the mortar.