Cement paste composition

The present invention provides a cementless paste composition to provide excellent physical properties. According to the present invention, the cementless paste composition comprises: 18 to 40 wt% of blast furnace slag fine powder; 18 to 40 wt% of fly ash; 5 to 20 wt% of a fly ash material; 20 to 30...

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Bibliographic Details
Main Authors YOU GI HEON, KIM HONG GI, KIM YEON WAN, HONG SUNG WOOK, HONG JUN HUI, CHOI CHEOL HEE
Format Patent
LanguageEnglish
Korean
Published 23.09.2021
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The present invention provides a cementless paste composition to provide excellent physical properties. According to the present invention, the cementless paste composition comprises: 18 to 40 wt% of blast furnace slag fine powder; 18 to 40 wt% of fly ash; 5 to 20 wt% of a fly ash material; 20 to 30% by weight of water; and 15 to 25% by weight of an active material, wherein the fly ash material is household fly ash generated after incineration of household waste and the curing temperature of the composition is 20 to 60℃. The active material mixed into the composition is preferably sodium sulfate or sodium silicate in a weight ratio of 2 : 8 to 5 : 5. The active material is mixed as an alkali active material, which is intended to induce a hydration reaction of the composition due to cementless characteristics. 본 발명의 무시멘트 페이스트 조성물은 고로슬래그 미분말 18 ~ 40 중량%: 플라이 애시 18 ~ 40 중량%; 비산재 5~20 중량%; 물 20~30 중량%; 활성재 15 ~ 25 중량%;를 포함하되, 비산재는 도시 생활 쓰레기 소각 후 발생되는 생활쓰레기 비산재를 사용한다. 이때 조성물의 양생온도는 20~60℃ 이다. 조성물에 혼합되는 활성재는 황산나트륨 또는 규산나트륨이 2:8 ~ 5:5 의 중량비로 혼합되는 것이 바람직하다. 활성재는 알칼리 활성재로 혼입되는데, 이는 시멘트가 들어가지 않는 특징 때문에 조성물의 수화반응을 유도하기 위한 것이다.
Bibliography:Application Number: KR20200029695