CAJ | 학술논문

为了研究在相同养护时间下不同掺入比生石灰固化黄土的比表面积（SSA）和离子交换能力（CEC）的变化规律，用亚甲基蓝吸附法测定了养护7d固化黄土的比表面积和阳离子交换能力，根据比表面积和粘土的含量计算固化黄土的活动性和分类值。结果显示随着生石灰掺入量的增加，固化黄土的比表面积、离子交换能力、活动性指数和分类值逐渐降低，在掺入比为5％时SSA和CEC出现了转折点。对其比表面积和阳离子交换能力、活动性指数相互关系进行讨论。结果揭示加固黄土中聚粒的形成以及大孔隙的增加降低了天然黄土的比表面积和阳离子交换能力，优势孔径和孔隙率的变化特点可能是SSA和CEC在掺入比为5％时出现转折点的原因。
위료연구재상동양호시간하불동참입비생석회고화황토적비표면적（SSA）화리자교환능력（CEC）적변화규률，용아갑기람흡부법측정료양호7d고화황토적비표면적화양리자교환능력，근거비표면적화점토적함량계산고화황토적활동성화분류치。결과현시수착생석회참입량적증가，고화황토적비표면적、리자교환능력、활동성지수화분류치축점강저，재참입비위5％시SSA화CEC출현료전절점。대기비표면적화양리자교환능력、활동성지수상호관계진행토론。결과게시가고황토중취립적형성이급대공극적증가강저료천연황토적비표면적화양리자교환능력，우세공경화공극솔적변화특점가능시SSA화CEC재참입비위5％시출현전절점적원인。
In order to study the change rule of specific surface area (SSA)and cation exchange capacity (CEC)of different mixing ratio of lime-stabilized loess in the same curing time,the methylene blue spot method is used to test specific surface area and cation exchange capacity of the solidified loess in 7 days curing,calculating the activity and classification value of the stabilitied loess according to the specific surface area and clay content.The results show that specific surface area,ion exchange capacity,active index and classification value of the stabilized loess gradually reduce with the increment of quicklime mix-ing ratio,when the mixing ratio is 5% SSA and CEC show a turning point.The relation of specific sur-face area,cation exchange capacity and active index has been discussed.These results reveal that the formation of poly particle and increase of the macropore in the stabilized loess reduce the specific surface area and cation exchange capacity of natural loess.The advantages in pore size and the changes in porosi-ty may be the reasons why SSA and CEC show a turning point with a mixing ratio of 5%.