A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PHC SKIN SUPPORTING AGENT F0R PRETENSIONED SPUN HIGH STRENGTH CONCRETE PILES
The present invention relates to a main surface fixing material for constructing a pretensioned spun high-strength concrete (PHC) pile, and more particularly, to a main surface fixing material for constructing a PHC pile, capable of replacing Type 1 cement used as an existing main surface fixing material for constructing a PHC pile by exhibiting rigidity by activating blast furnace slag fine powder, which is a latent hydraulic material, through desulfurization dust discharged as a by-product during a desulfurization process in steelworks and bottom ash discharged as a by-product from a circulating fluidized bed boiler. According to the present invention, based on 100 parts by weight of Type 1 cement, the main surface fixing material for the PHC pile includes: 100 to 2,000 parts by weight of blast furnace slag fine powder; 1 to 500 parts by weight of sodium bicarbonate desulfurization dust having an Na_2O content of 10 to 50 wt% and an SO_3 content of 10 to 50 wt% and discharged as a by-product during a desulfurization process in steelworks; 1 to 500 parts by weight of lime desulfurization dust having a CaO content of 40 to 70 wt% and an SO_3 content of 2 to 20 wt% and discharged as a by-product during the desulfurization process in the steelworks; 1 to 500 parts by weight of bottom ash of a circulating fluidized bed boiler; and 1 to 500 parts by weight of fly ash of a solid fuel.
본 발명은 PHC 말뚝 시공용 주면 고정재에 관한 것으로서, 보다 상세하게는 잠재수경성 물질인 고로슬래그 미분말을 제철소에서 탈황 공정 중에 부산물로 배출되는 탈황 분진과, 순환 유동층 보일러에서 부산물로 배출되는 바텀애시를 통해 활성화시켜 강도를 발현하여 기존 PHC 말뚝 시공용 주면 고정재로 사용되는 1종 시멘트를 대체할 수 있는 PHC 말뚝 시공용 주면 고정재에 관한 것이다. 본 발명에 의한 PHC 말뚝용 주면 고정재는 1종 시멘트 100중량부에 대하여, 고로슬래그 미분말 100∼2,000중량부와, Na2O 함량이 10∼50중량%이고 SO3 함량이 10∼50중량%인 제철소 탈황공정에서 부산물로 배출되는 중조 탈황 분진 1∼500중량부와, CaO 함량이 40∼70중량이고 SO3 함량이 2∼20중량%인 제철소 탈황공정에서 부산물로 배출되는 석회 탈황 분진 1∼500중량부와, 순환 유동층 보일러 바텀애시 1∼500중량와, 고형연료 플라이애시 1～500중량부를 포함한다.
PHC SKIN SUPPORTING AGENT F0R PRETENSIONED SPUN HIGH STRENGTH CONCRETE PILES
The present invention relates to a main surface fixing material for constructing a pretensioned spun high-strength concrete (PHC) pile, and more particularly, to a main surface fixing material for constructing a PHC pile, capable of replacing Type 1 cement used as an existing main surface fixing material for constructing a PHC pile by exhibiting rigidity by activating blast furnace slag fine powder, which is a latent hydraulic material, through desulfurization dust discharged as a by-product during a desulfurization process in steelworks and bottom ash discharged as a by-product from a circulating fluidized bed boiler. According to the present invention, based on 100 parts by weight of Type 1 cement, the main surface fixing material for the PHC pile includes: 100 to 2,000 parts by weight of blast furnace slag fine powder; 1 to 500 parts by weight of sodium bicarbonate desulfurization dust having an Na_2O content of 10 to 50 wt% and an SO_3 content of 10 to 50 wt% and discharged as a by-product during a desulfurization process in steelworks; 1 to 500 parts by weight of lime desulfurization dust having a CaO content of 40 to 70 wt% and an SO_3 content of 2 to 20 wt% and discharged as a by-product during the desulfurization process in the steelworks; 1 to 500 parts by weight of bottom ash of a circulating fluidized bed boiler; and 1 to 500 parts by weight of fly ash of a solid fuel.
본 발명은 PHC 말뚝 시공용 주면 고정재에 관한 것으로서, 보다 상세하게는 잠재수경성 물질인 고로슬래그 미분말을 제철소에서 탈황 공정 중에 부산물로 배출되는 탈황 분진과, 순환 유동층 보일러에서 부산물로 배출되는 바텀애시를 통해 활성화시켜 강도를 발현하여 기존 PHC 말뚝 시공용 주면 고정재로 사용되는 1종 시멘트를 대체할 수 있는 PHC 말뚝 시공용 주면 고정재에 관한 것이다. 본 발명에 의한 PHC 말뚝용 주면 고정재는 1종 시멘트 100중량부에 대하여, 고로슬래그 미분말 100∼2,000중량부와, Na2O 함량이 10∼50중량%이고 SO3 함량이 10∼50중량%인 제철소 탈황공정에서 부산물로 배출되는 중조 탈황 분진 1∼500중량부와, CaO 함량이 40∼70중량이고 SO3 함량이 2∼20중량%인 제철소 탈황공정에서 부산물로 배출되는 석회 탈황 분진 1∼500중량부와, 순환 유동층 보일러 바텀애시 1∼500중량와, 고형연료 플라이애시 1～500중량부를 포함한다.
PHC SKIN SUPPORTING AGENT F0R PRETENSIONED SPUN HIGH STRENGTH CONCRETE PILES
PHC 말뚝 시공용 주면 고정재
SEO SE GWAN (author) / AN YANG JIN (author) / LIM YANG HYUN (author) / MUN GYOUNG JU (author)
2021-06-16
Patent
Electronic Resource
Korean
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