混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
6期
21-27
,共7页
活性粉末混凝土%微观结构%抗氯离子渗透性%活性掺合料%养护温度
活性粉末混凝土%微觀結構%抗氯離子滲透性%活性摻閤料%養護溫度
활성분말혼응토%미관결구%항록리자삼투성%활성참합료%양호온도
Reactive powder concrete%Micro-structure%Resistance to chloride ion permeability%Active admixtures%Curing temperature
为了研究不同活性掺合料的活性粉末混凝土(RPC)在不同养护温度条件下的抗氯离子渗透性能,利用NEL试验法,分别对4组不同温度、不同活性掺合料的RPC试件进行氯离子扩散系数测定。结果表明,RPC优异的微观结构使其具有良好的抗氯离子渗透性能;在相同养护温度下,不同活性掺合料替代硅灰比例相同时,RPC试件抗氯离子渗透能力的大小依次为:粉煤灰>石英砂>微硅粉;同一种活性掺合料替代相同比例硅灰时,高温养护的RPC试件,其抗氯离子渗透性能明显优于常温养护的RPC试件。
為瞭研究不同活性摻閤料的活性粉末混凝土(RPC)在不同養護溫度條件下的抗氯離子滲透性能,利用NEL試驗法,分彆對4組不同溫度、不同活性摻閤料的RPC試件進行氯離子擴散繫數測定。結果錶明,RPC優異的微觀結構使其具有良好的抗氯離子滲透性能;在相同養護溫度下,不同活性摻閤料替代硅灰比例相同時,RPC試件抗氯離子滲透能力的大小依次為:粉煤灰>石英砂>微硅粉;同一種活性摻閤料替代相同比例硅灰時,高溫養護的RPC試件,其抗氯離子滲透性能明顯優于常溫養護的RPC試件。
위료연구불동활성참합료적활성분말혼응토(RPC)재불동양호온도조건하적항록리자삼투성능,이용NEL시험법,분별대4조불동온도、불동활성참합료적RPC시건진행록리자확산계수측정。결과표명,RPC우이적미관결구사기구유량호적항록리자삼투성능;재상동양호온도하,불동활성참합료체대규회비례상동시,RPC시건항록리자삼투능력적대소의차위:분매회>석영사>미규분;동일충활성참합료체대상동비례규회시,고온양호적RPC시건,기항록리자삼투성능명현우우상온양호적RPC시건。
In order to research the resistance to chloride ion penetration performance of reactive powder concrete (RPC) with different active admixture which works in the condition of different curing temperature, the NEL test method is used to determine the chloride ion diffusion coefficient in four groups which work on different temperature and have differ-ent active admixtures. The results show that the RPC has good properties of the resistance to chloride ion permeability be-cause of its excellent microscopic structure. The order of the RPC specimens’ ability to resist chloride ion permeability is that:fly ash>quartz sand>silica fume which work in the same curing temperature and have the same ratio of these three active admixtures. For the same kind of active admixtures, the ability of the resistance to chloride ion permeability when the RPC specimens are cured in high temperature is better than other specimens’ when they are cured in normal tempera-ture.