An Experimental Study on the Quality of Concrete with Municipal Solid Waste Incineration Ash

The Quality of municipal solid waste incineration ash (incineration ash) was analyzed for the purpose of the reusing for concrete material. The folwability and strength properties of concrete mixed with incinerator ash were investigated. CaO component was included more than 50% in chemical component of incinerator ash, mean size of 50% accumulated particle distribution of incinerator ash was about $25{\mu}m$. Particle shape of incinerator ash ($IA_1$) was massed the round shape with fine particle, particle shape of incinerator ash ($IA_2$) was piled up the sheet shape according to manufacture procedure. The Quality of concrete was effected by use of incinerator ash. When the incinerator Ash ($IA_2$) was used, slum of concrete was increased and dosage of high range water reducing agent was reduced. However, strength development of concrete was decreased. Dosage of high range water reducing agent was increased by combined use of incinerator ash ($IA_2$) and diatomite powder, but strength development of concrete was improved. Ratio of compressive strength and tensile strength was in the range 85%~105% of CEB-FIP model code.

쓰레기 소각재 사용 콘크리트의 품질특성에 대한 실험적 연구

쓰레기 소각재(소각재)를 콘크리트용 재료로 재활용하기 위하여 소각재의 품질특성에 대하여 분석하였으며, 소각재를 사용한 콘크리트의 유동특성 및 강도특성에 대하여 검토하였다. 소각재의 화학성분은 CaO 성분이 50%이상을 차지하고 있었으며, 소각재의 누적입도분포 50%의 평균입경은 $25{\mu}m$ 정도를 나타내었다. 소각재 IA1의 입자형상은 미세입자가 뭉쳐져 구형상을 나타내고 있으며, 소각재 IA2의 입자형상은 미세입자가 판상 형상으로 겹쳐져 있는 구조로 제조공정에 따라 다르게 나타났다. 소각재를 사용하므로써 콘크리트의 품질특성에도 크게 영향을 미쳤으며, 소각재 IA2를 사용한 경우 슬럼프가 증가하고 고성능감 수제 사용량이 감소하였으나, 압축강도 발현은 저하하였다. 소각재 IA2와 규조분말을 병용하여 혼합하므로써 목표슬럼프를 얻기 위한 고성능감수제의 사용량은 증가하였으나, 재령 28일 압축강도는 향상되는 효과가 있었다. 또한, 압축강도와 인장강도와의 비는 CEB-FIP 코드의 85%~105% 범위내에 있었다.