리그닌 첨가가 시멘트 페이스트 특성에 미치는 영향

심재홍; 박준석; Jae-Hong Sim; Joon-Seok Park

Journal of the Korean Industrial and Engineering Chemistry, Vol.18, No.2, 178-182, April, 2007

Export Citation

리그닌 첨가가 시멘트 페이스트 특성에 미치는 영향

Effect of Lignin Addition on Characteristics of Cement Pastes

심재홍, 박준석^{1, †}

(주)상록 E&C
¹강원대학교 공학대학 환경방재공학과

Jae-Hong Sim, and Joon-Seok Park^{1, †}

Evergreen E&C, Samcheok, Gangwon 245-933, Korea
¹Department of Environmental Disaster Prevention Engineering, Kangwon National University, Gangwon 245-711, Korea

E-mail:

초록

본 연구는 리그린을 포틀랜드시멘트에 첨가하였을 때 시멘트 페이스트의 특성에 미치는 영향을 평가하고자 실시하였다. 시멘트 질량에 대하여 리그닌을 0.5∼2.0%의 비율로 첨가하였으며, 각각 3, 7, 14, 28일간 공시체를 양생하였다. 용출용액으로는 초순수(超純水)와 해수(海水)를 사용하였으며, 양생기간 별로 pH 및 Ca, Na, K의 용출농도를 측정하였다. 시멘트의 물리적 특성으로 압축강도를 측정하였다. 이온 성분의 용출농도는 초순수에서 리그닌을 첨가하였을때 리그닌을 첨가하지 않은 경우 보다 다소 낮게 나타났다. 리그닌을 0.5∼2.0% 첨가한 경우를 첨가하지 않은 경우와 비교하였을 때 리그닌 첨가가 용출용액의 pH에는 큰 영향을 미치지 못하였다. 리그닌을 0.5∼2.0% 첨가한 경우 시멘트의 압축강도는 초순수 양생에서 30∼60%, 해수 양생에서는 3∼20% 정도 증가하여 물리적 특성이 크게 개선되었다.

This research was conducted to evaluate the effect of lignin addition on the characteristics of portland cement pastes. Lignin was added to cement at the ratio of 0.5 to 2.0% on dry weight basis. The specimens were cured for 3, 7, 14, and 28 days. Distilled water and sea water were used as leaching solutions. pH and concentration of Ca, Na, and K ions in the leaching solutions were analyzed. Lignin addition of 0.5∼2.0% to cement pastes decreased the leached concentration of Ca, Na, and K ions for distilled water, compared to the case without lignin addition. However, a significant pH variation of the leached solutions was not observed with the lignin addition. Lignin addition significantly improved the compressive strength of cement pastes, approximately 30∼60% for curing in distilled water and 3∼20% for that in sea water.

Keywords:portland cement;lignin;pH;compressive strength

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[1] Kim JH, Bae UG, Lee MH, Korean Solid Wastes Eng. Society Spring Symposium, 265 (2005)

[2] Bookter JT, Ham RK, Environ. Eng., 108, 1089 (1982)

[3] Yin CR, Seo DI, Lee ST, Jin YS, Korean Society of Env. Eng., 22, 2197 (2000)

[4] Zain MFM, Islam MN, Radin SS, Yap SG, Cement & Concrete Composites, 26, 845 (2004)

[5] Ministry of Environment, Korean Solid Wastes Method (2002)

[6] 中尾義房, 在架明水試報, 10, 123 (1986)

[7] Boyd CL, Tucker CS, Pond Aquaculture Water Quality Management, Kluwer Academic Pulb., Boston (1998)

[8] Lee JY, Hur JW, Korean J. Environ. Biol., 23, 89 (2005)

[9] Namkoong W, Park JS, Lee SH, J. Korean Solid Wates Eng. Society, 17, 28 (2000)

[10] Zamorani E, Serrini G, Stabilization and Solidification of Hazardous, Radioactive and Mixed Wastes, ed. T. M. Gilliam and C. C. Wiles, 217, ASTM, Philadelphia (1992)