An Experimental Study on Early Strength and Drying Shrinkage of High Strength Concrete Using High Volumes of Ground Granulated Blast-furnace Slag(GGBS)

Yang, Wan-Hee; Ryu, Dong-Woo; Kim, Woojae; Park, Dong-Cheol; CheeHo, Seo

doi:10.5345/jkibc.2013.13.4.391

Cited by 8 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, many studies have focused on how to find ideal substitution ratios and powder levels of the blast furnace slag powder in order to analyze constructability and physical characteristics in construction sites. Jo [18], Jang and Ji [19], Han et al [20], and Kim et al [21] measured compressive strength and characteristics of the cement matrix depending on substitution ratios of cement and the blast furnace slag powder. e analysis shows a better flow and slightly less air with higher substitutions.…”

Section: Previous Studiesmentioning

confidence: 99%

Development of Reinforcement Grout Materials Based on Blast Furnace Slag according to the Content of Reinforcement Fiber

Seo

Kim

2021

Advances in Civil Engineering

View full text Add to dashboard Cite

The grouting is used to reinforce soft ground and to prevent the leakage of water in the soil. The objective of the study is to enhance the compressive strength of grout materials by using reinforcing fibers and to increase the strength of soil using blast furnace slag powder. For this purpose, cement was replaced with the blast furnace slag powder by 30 to 60%. Furthermore, for comparison of carbon fibers with aramid fibers, each fiber was added by 0, 0.5, and 1.0% of the weight of material. As the contents of carbon fibers and aramid fibers increased, the uniaxial compressive strength increased. This is due to the interlocking of fibers in the grout material that increased the uniaxial compressive strength. Moreover, the grout material reinforced with aramid fibers showed an increase of uniaxial compressive strength by at least 20% compared to the carbon fibers. An environmental assessment was done through a heavy metal leaching test and a pH test. The test result reveals that about 50% of chromium (VI) leaching decreased as 30% more blast furnace slag powder was used but the pH test shows about 0.5 pH increased as 30% more blast furnace slag powder was used. Further study is necessary for the pH test.

show abstract

Section: Previous Studiesmentioning

confidence: 99%

Development of Reinforcement Grout Materials Based on Blast Furnace Slag according to the Content of Reinforcement Fiber

Seo

Kim

2021

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…시멘트 산업은 대표적인 탄소 배출 산업으로서 [1], 콘크리 트에 산업부산물인 고로슬래그 미분말과 플라이애시를 다량 사용할 경우 시멘트 사용을 줄이고 탄소 배출을 저감할 수 있으나, 이러한 경우 초기강도의 저하가 비교적 크기 때문에 대체량 증대에 한계가 있다 [2,3,4,5,6].…”

Section: 연구의 목적unclassified

Application of Alkali-Activated Ternary Blended Cement in Manufacture of Ready-Mixed Concrete

Yang¹,

Hwang²,

Lee³

2017

Journal of the Korea Institute of Building Construction

Self Cite

View full text Add to dashboard Cite

Cement industry is typical carbon-emission industry. If the industrial by-products(granulated blast-furnace slag (GGBFS), fly ash, etc.) are used a large amount, it might be able to reduce cement consumption and mitigate carbon emissions. In this case, however, decrease of early strength is relatively large. Therefore, there is a limitation in increase of the amount of substitute. Considering these circumstances, it would be a good solution to reduce carbon emissions in cement industry to improve the performances of mixed cement through proper alkali-activation in Portland blended cement using GGBFS or fly ash. Therefore, this study prepared concrete in ready-mixed concrete manufacturing facilities with an addition of a binder which used 2.0% modified alkali sulfate activator after mixing Portland cement, GGBFS and fly ash in the ratio of 4:4:2 and assessed its basic properties. The results found the followings: The use of modified alkali-sulfate activator slightly reduced slump and shortened setting time. As a result, bleeding capacity decreased while early strength improved. In addition, there is no big difference in carbonation resistance. It appears that there should be continued experiments and analyses on the related long-term aged specimens.

show abstract

“…이러한 해안 구조물에 사용하는 콘크리트는 여 러 가지 환경 조건에 의해 성능 저하가 일어나게 되는데, 그 중 가장 심각한 내구성 저하 요인은 염소이온의 침투에 의한 철근의 부식이다 [1,2]. 는 것은 지속가능한 건설 재료의 활용이라는 측면에서 최근 많은 주목을 받고 있으며 [12,13], 고로슬래그 미분말을 대 량 활용하는 경우에 알칼리 활성화를 통해 조기 강도를 보 완하는 방안이 보고된 사례도 있다 [6,14,15,16]. 따라서 내구성 증가의 목적으로 3성분계 시멘트를 활용할 때 알칼 리 설페이트계 활성화제의 사용은 조기강도의 개선 목적으 로 유효한 방안이 될 수 있으나, 이러한 경우에 염해저항성 과 같은 내구성의 변화를 고찰한 사례는 부족한 실정이다.…”

Section: 연구의 목적unclassified

An Experimental Study on the Chloride Attack Resistibility of Alkali-Activated Ternary Blended Cement Concrete

Yang¹,

Hwang²,

Jeon³

et al. 2016

Journal of the Korea Institute of Building Construction

Self Cite

View full text Add to dashboard Cite

The use of ternary blended cement consisting of Portland cement, granulated blast-furnace slag (GGBFS) and fly ash has been on the rise to improve marine concrete structure's resistance to chloride attack. Therefore, this study attempted to investigate changes in chloride attack resistibility of concrete through NT Build 492-based chloride migration experiments and test of concrete's ability to resist chloride ion penetration under ASTM C 1202(KS F 2271) when 1.5-2.0% of alkali-sulfate activator (modified alkali sulfate type) was added to the ternary blended cement mixtures (40% ordinary Portland cement + 40% GGBFS + 20% fly ash). Then, the results found the followings: Even though the slump for the plain concrete slightly declined depending on the use of the alkali-sulfate activator, compressive strength from day 2 to day 7 improved by 17-42%. In addition, the coefficient from non-steady-state migration experiments for the plain concrete measured at day 28 decreased by 36-56% depending on the use of alkali-sulfate. Furthermore, total charge passed according to the test for electrical indication of concrete's ability to resist chloride ion penetration decreased by 33-62% at day 7 and by 31-48% at day 28. As confirmed in previous studies, reactivity in the GGBFS and fly ash improved because of alkali activation. As a result, concrete strength increased due to reduced total porosity.

show abstract

An Experimental Study on Early Strength and Drying Shrinkage of High Strength Concrete Using High Volumes of Ground Granulated Blast-furnace Slag(GGBS)

Cited by 8 publications

References 7 publications

Development of Reinforcement Grout Materials Based on Blast Furnace Slag according to the Content of Reinforcement Fiber

Development of Reinforcement Grout Materials Based on Blast Furnace Slag according to the Content of Reinforcement Fiber

Application of Alkali-Activated Ternary Blended Cement in Manufacture of Ready-Mixed Concrete

An Experimental Study on the Chloride Attack Resistibility of Alkali-Activated Ternary Blended Cement Concrete

Contact Info

Product

Resources

About