CAJ | 학술논문

通过对5个实际工程的骨料进行岩相分析及砂浆棒快速法试验，分析当骨料中的碱活性组分类别及含量相似时，这些骨料的砂浆试件膨胀率发展规律，对具有潜在危害性反应的活性骨料，掺加粉煤灰对碱-骨料反应进行抑制。试验结果表明，当碱活性组分含量达到一定程度时，根据砂浆棒快速法，结果大部分骨料应判定为具有潜在危害性反应的碱-硅酸反应活性骨料，对于活性骨料，粉煤灰掺量大于20%时抑制效果明显。因此，当遇到无法及时进行膨胀性试验的工程骨料，其骨料碱活性组分类别及含量与本研究的5种骨料相似时，可以借鉴本研究骨料的碱活性试验结果对骨料的碱活性进行预判，从而为快速评价工程使用该骨料的安全性提供依据。
통과대5개실제공정적골료진행암상분석급사장봉쾌속법시험，분석당골료중적감활성조분유별급함량상사시，저사골료적사장시건팽창솔발전규률，대구유잠재위해성반응적활성골료，참가분매회대감-골료반응진행억제。시험결과표명，당감활성조분함량체도일정정도시，근거사장봉쾌속법，결과대부분골료응판정위구유잠재위해성반응적감-규산반응활성골료，대우활성골료，분매회참량대우20%시억제효과명현。인차，당우도무법급시진행팽창성시험적공정골료，기골료감활성조분유별급함량여본연구적5충골료상사시，가이차감본연구골료적감활성시험결과대골료적감활성진행예판，종이위쾌속평개공정사용해골료적안전성제공의거。
Five project aggregates with similar alkali reactive components and their contents were tested with petrographic analysis and accelerating mortar-bar method to study the development rules of alkali aggregate reaction expansion ratios.For the potential hazardous re-active aggregates,fly ash was adopted to suppress alkali-aggregate reaction.It indicated that when the contents of alkali reactive compo-nents reached a certain level,most aggregates should be judged to be potential hazardous reactive aggregates with accelerating mortar-bar method.For reactive aggregates,the suppression effect was obvious when the substitution ratio of fly ash was higher than 20%.Therefore ,if the expansion properties of other aggregates cannot be tested in time and they have similar alkali reactive components and contents with those five aggregates,their alkali activity can be pre-judged according to the test results of those five aggregates ,which consequently can provide basis for rapidly assessing the safety of other project aggregates.