新材料・新工法（材料）(2)

[V-90] Basic research on sajt damage resistance and sulfuric acid resistance of centrifugally formed solids

〇Minoru Hata¹, Katsumi Sugimoto², Etsurou Hayashi², Shingo Miyazawa³ (1.Nipponhume Corporation, 2.Tokyo Metropolitan Sewerage Service Coporation, 3.Ashikaga University)

Keywords:fly ash, fine blast furnace slag powder, size-controlled ash, salt damage resistance, sulfuric acid resistance, sewerage pipes

The purpose of this study was to develop highly durable sewerage pipes by using solids from industrial by-products such as fly ash and fine blast furnace slag powder, and for which research was conducted to investigate salt damage resistance and sulfuric acid resistance with such solids.
As a result, it was conceived that the salt tolerance (salt penetration depth) may be the same level, if the compressive strength of the solid was of the same level as that of mixed cement.
In addition, the sulfuric acid resistance of the solid was excellent and it was confirmed that the mass change rate by the sulfuric acid immersion test was exceptionally small.