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고로슬래그 미분말에 순환골재 미분말의 입도 변화에 따른 무시멘트 모르타르의 기초적 특성
황금광 ( Jin Guang Huang ),박재용 ( Jae Yong Park ),정상운 ( Sang Woon Jung ),허영선 ( Young Sun Heo ),한민철 ( Min Cheol Han ),한천구 ( Cheon Goo Han ) 한국건축시공학회 2013 한국건축시공학회 학술발표대회 논문집 Vol.13 No.1
The fine powder obtained from the manufacturing process of recycled coarse aggregate contains unhydareted cement particles on their surface. It is believed that the alkalinity of the powder (11.0-12.5) is enough to active the slag-based composites. In this paper, the obtained powder was sieved and divided into two sizes, i.e., 0.08 mm and 0.3 mm, and added to the slag-based mortar. Results showed that the fine powder had an effect on the slump and the compressive strength of slag-based composites. With the different pH values of the powder, it could be seen that the distance between the two level powders. And found the peak 28 days compressive strength as the replacement ratio of the recycled aggregate powder changed. The findings from this study provide an indication that with achieved compressive strength, the fine powder can be used in a light weight concrete.
소각장애시의 치환률 변화에 따른 순환골재 미분말 함유 고로슬래그 다량치환 모르타르의 기초적 특성
황금광 ( Jin Guang Huang ),박재용 ( Jae Yong Park ),정상운 ( Sang Woon Jung ),허영선 ( Young Sun Heo ),한민철 ( Min Cheol Han ),한천구 ( Cheon Goo Han ) 한국건축시공학회 2013 한국건축시공학회 학술발표대회 논문집 Vol.13 No.2
For the decades, various of materials were used to instead of cement as the high volume CO CO22 occurred during the process of cement manufacture. In this paper, incineration plant ash was used in the mortar which incorporating high volume of blast furnace slag. Water to binder ratio(W/B) is fixed as 50%,BS+RP``s replacement ratio is fixed as 80%,and the replacement ratio of WA1 is range as 0,0.5,1,2,3,4,5%.For the fresh mortar, flow and chloride contents has been tested. For the hardened mortar, compressive strength at 3,7,28 days has been tested. the result shows that when the replacement ratio of WA1 is 0.5%,the chloride contents is less than 0,3 kg/m3,the flowability and strength also performed better than other replacement types of mortar.