blast furnace slag powder reaction accelerator and concrete composition using the same: Fid-Bau Portal

blast furnace slag powder reaction accelerator and concrete composition using the same

KWON YEOUNG JU

The present invention relates to a blast furnace slag fine powder reaction accelerator and a concrete composition using the same. The blast furnace slag fine powder reaction accelerator is prepared by mixing: 100 parts by weight of the mixture prepared by mixing 20 to 50 wt% of fine powder of blast furnace slag generated during the production of pig iron in an ironworks, 10 to 40 wt% of converter slag dust, 10 to 20 wt% of fly ash, 5 to 10 wt% of natural anhydride, 2 to 5 wt% of a desulfurization by-product generated during the desulfurization process among the waste generated in the steelmaking process and having a calcium oxide (CaO) content of 40 to 50 wt% and a sulfur trioxide (SO_3) content of 20 to 40 wt%, and 1 to 5 wt% of a stimulant; and 1 to 5 parts by weight of a strength reinforcing agent containing 1 to 3 parts by weight of carbon fiber scrap generated during the production of carbon fiber processed products, calcium oxide (CaO) generated in the aluminum steelmaking process, sulfur trioxide (SO_3) and aluminum oxide (AL_2O_3). Since the present invention utilizes carbon fiber scrap generated during the production of carbon fiber processed products, it is possible to reduce the manufacturing cost through recycling of resources, and flexural strength and tensile strength can be improved.

본 발명은 제철소의 선철 제조시 발생되는 고로슬래그 미분말 20~50중량%와, 전로슬래그 더스트 10~40중량%와, 플라이 애쉬 10~20중량%와, 천연무수석고 5~10중량%와, 제강공정에서 발생하는 폐기물 중 탈황과정에서 발생되고 산화칼슘(CaO)의 함량이 40~50중량%이고 삼산화황(SO3)의 함량이 20~40중량%인 탈황부산물 2~5중량%와, 자극제 1~5중량%;를 혼합하여 제조되는 혼합물 100중량부에 대하여 탄소섬유 가공품의 제작시 발생되는 탄소섬유 스크랩 1~3중량부와, 알루미늄 제강공정에서 발생되는 산화칼슘(CaO)과, 삼산화황(SO3)과, 산화알루미늄(AL2O3)을 포함하는 강도보강제 1~5중량부가 혼합되는 것을 특징으로 하는 고로슬래그미분말 반응촉진제 및 이를 이용한 콘크리트 조성물을 개시한다.

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