安徽理工大学学报（自然科学版）
安徽理工大學學報（自然科學版）
안휘리공대학학보（자연과학판）
Journal of Anhui University of Science and Technology (Natural Science)
2015年
3期
67-70,82
,共5页
混凝土%渗透系数%三轴渗透试验
混凝土%滲透繫數%三軸滲透試驗
혼응토%삼투계수%삼축삼투시험
concrete%permeability coefficient%triaxial permeability experiment
渗透性是评价混凝土耐久性的一个重要指标，通过混凝土的渗透性可以评价混凝土的耐久性。采用三轴渗透试验测定不同压力条件下混凝土的渗透系数和尺寸的变化，分析混凝土渗透系数和尺寸随压力变化的趋势。结果表明：混凝土的渗透性与尺寸受外部压力影响，混凝土渗透系数随压力的增大而减小，其变化趋势符合幂函数形式；混凝土的渗透系数随试样两端水头差增大而增大，呈指数函数形式递增；试样直径和高度随外部压力的增大而减小，符合幂函数形式。
滲透性是評價混凝土耐久性的一箇重要指標，通過混凝土的滲透性可以評價混凝土的耐久性。採用三軸滲透試驗測定不同壓力條件下混凝土的滲透繫數和呎吋的變化，分析混凝土滲透繫數和呎吋隨壓力變化的趨勢。結果錶明：混凝土的滲透性與呎吋受外部壓力影響，混凝土滲透繫數隨壓力的增大而減小，其變化趨勢符閤冪函數形式；混凝土的滲透繫數隨試樣兩耑水頭差增大而增大，呈指數函數形式遞增；試樣直徑和高度隨外部壓力的增大而減小，符閤冪函數形式。
삼투성시평개혼응토내구성적일개중요지표，통과혼응토적삼투성가이평개혼응토적내구성。채용삼축삼투시험측정불동압력조건하혼응토적삼투계수화척촌적변화，분석혼응토삼투계수화척촌수압력변화적추세。결과표명：혼응토적삼투성여척촌수외부압력영향，혼응토삼투계수수압력적증대이감소，기변화추세부합멱함수형식；혼응토적삼투계수수시양량단수두차증대이증대，정지수함수형식체증；시양직경화고도수외부압력적증대이감소，부합멱함수형식。
Permeability is one of the important indexes to evaluate the durability of concrete .The durability of concrete can be evaluated by the permeability of concrete .The permeability and scale change of concrete under different pressure were tested by triaxial permeability experiment .The trend of concrete permeability coefficient and scale change with pressure were analyzed .The results showed that permeability and scale change of concrete are affected by external pressure , the concrete permeability coefficient decreases with the increase of pressure , and the change trend is in the form of power function .The permeability coefficient of concrete increases with the increase of water head difference between the two ends of the sample , and the increment is in exponential func-tion.The diameter and height of the sample decrease with the increase of the external pressure , which is in the form of power function .
