The Effect of Lignin Compound on Dispersibility of Concrete

,; ,; ,; ,

J. Korean Ceram. Soc. > Volume 13(3); 1976 > Article

Journal of the Korean Ceramic Society 1976;13(3): 37.

Lignin 화합물의 Concrete 분산성에 대한 연구

문정연, 한기성¹

인하대학교 요업공학과
¹쌍용양회(주)

The Effect of Lignin Compound on Dispersibility of Concrete

ABSTRACT

Although the water mixed into the concrete plays the role of hydration and acquiring the necessary workability, the more portion of water acts to obtain the substantial workability rather than to complete the hydration. However, the excess amount of water causes the poor quality of concrete, therefore it is useful to add the minimum amount of water as required as to acquire the proper workability. There have been the considerable numbers of investigations in which the dispersion phenomena of strong eletrolytic high polymer compounds such as lignosulfate and some of surface activation agents were studied to utilize as the dispersion agent of concrete. In the present study, Na-lignate, dispersion properties of which has not been studied yet, were investigated with the purpose of utilizing as a dispersion agent of concrete. The microscopic observations showed a great improvement in the dispersion of cement particles, also the fluidity and compressive strength of concrete were remarkably increased with the addition of Na-lignate: The addition of Na-lignate by 0.02% showed the increase of 1.76 times and 1.27 times of slump value and flow value respectively, and the compressive strength was increased by 1.07 times.