CAJ | 학술논문

采用水煮法分析添加不同掺量消石灰的硅石与沥青的黏附性．根据级配型抗滑沥青混合料设计理论，筛孔4．75 mm以上的粗集料采用硅石，4．75 mm以下的集料采用石灰岩．基于马歇尔设计法进行硅石沥青混合料配合比设计及路用性能检验，并选择具有代表性路段进行硅石沥青路面试验路的铺筑和跟踪检测．结果表明，添加2％消石灰可以有效提高沥青与硅石的黏附性，且添加2％消石灰的硅石沥青混合料配合比设计的各项性能检验结果均满足《规范》（ JTG F40-2004）的技术要求，特别是水稳定性能表现较好；试验路段的路面使用状况良好，构造深度及摆值均较同路线普通沥青路面高，且其随着使用时间的增加衰减较慢．这表明硅石作为一种酸性集料，以其合理的混合料配合比设计和采取适当的抗剥落措施，在公路沥青路面中的应用是可行的，且改善了路面的抗滑性能．
채용수자법분석첨가불동참량소석회적규석여력청적점부성．근거급배형항활력청혼합료설계이론，사공4．75 mm이상적조집료채용규석，4．75 mm이하적집료채용석회암．기우마헐이설계법진행규석력청혼합료배합비설계급로용성능검험，병선택구유대표성로단진행규석력청로면시험로적포축화근종검측．결과표명，첨가2％소석회가이유효제고력청여규석적점부성，차첨가2％소석회적규석력청혼합료배합비설계적각항성능검험결과균만족《규범》（ JTG F40-2004）적기술요구，특별시수은정성능표현교호；시험로단적로면사용상황량호，구조심도급파치균교동로선보통력청로면고，차기수착사용시간적증가쇠감교만．저표명규석작위일충산성집료，이기합리적혼합료배합비설계화채취괄당적항박락조시，재공로력청로면중적응용시가행적，차개선료로면적항활성능．
The boiling water test was used to investigate adhe-siveness between silica and asphalt with different contents of hydrated lime added .Based upon the design theory of graded anti-skidding asphalt mixtures , the coarse aggregates retained on the 4.75 mm sieve were adopted for silica , fine aggregates passing the 4.75 mm sieve and filler were utilized for lime-stone.Marshall design method was performed to determine gradation composition design of asphalt mixtures containing silica, and the experimental section of asphalt pavement con-taining silica was chosen for construction with tracking detec-tion at a typical region .Results show that adhesiveness be-tween silica and asphalt can be improved by the addition of hydrated lime at 2% by the weight of asphalt , and the per-formance test results of asphalt mixtures containing silica with 2% hydrated lime added can meet the requirements of the technical specifications ( JTG F40-2004 ) , especially that presents favorable moisture susceptibility .The experimental pavement conditions display an appreciable usage .The tex-ture depth and British pendulum numbers of experimental pavement is higher than that of common asphalt pavement at the same route.Moreover, the texture depth and British pen-dulum numbers along with increasing time exhibit lower de-crease than that of common asphalt pavement in terms of tracking detection results .This means silica, as a kind of acid aggregate , may be used in the highway asphalt pavement by using appropriate gradations composition design and anti-stripping agent , which can improve the skidding resistance of asphalt pavement .