CAJ | 학술논문

以集料的体积指标作为级配设计的基本参数,粗集料形成的骨架嵌挤结构为出发点,通过振动击实确定每档粒径集料的体积指标,并以该指标为基本控制参数,混合料设计空隙率为已知控制变量,同时引入Bailey设计方法中粗集料比(CA)用以控制混合料的离析,建立集料体积指标的关系表达式.得出骨架孔隙结构水泥稳定碎石的级配范围和设计级配.根据室内试验和理论分析得出多空隙水泥稳定碎石的含水量的确定方法.通过旋转压实和静压成型试件,分析并提出适宜的压实方案.建立压实次数和7 d抗压强度的关系.
이집료적체적지표작위급배설계적기본삼수,조집료형성적골가감제결구위출발점,통과진동격실학정매당립경집료적체적지표,병이해지표위기본공제삼수,혼합료설계공극솔위이지공제변량,동시인입Bailey설계방법중조집료비(CA)용이공제혼합료적리석,건립집료체적지표적관계표체식.득출골가공극결구수니은정쇄석적급배범위화설계급배.근거실내시험화이론분석득출다공극수니은정쇄석적함수량적학정방법.통과선전압실화정압성형시건,분석병제출괄의적압실방안.건립압실차수화7 d항압강도적관계.
Beginning with the embedded skeleton formed by the coarse aggregate.using volume indexes for aggregate gradation design as the basic parameters,the volume index for the aggregate of each grain size was obtained through vibratory compaction.Taken this index as the basic control parameter together with the mixture design air voids as the control variable,by introducing the coarse aggregate ratio(CA)in Bailey design method to control segregation of the mixture,the expression of aggregate volumetric index was established,the scope of gradation and designed gradation of skeleton-pore cement stabilized macadam was obtained.The water content of porous cement stabilized macadam was determined according to indoor experiment and theoretical analysis.Based on gyratory compaction and hydrostatic molding of specimens,the appropriate solution of compaction was analysed and put forward,and the relationship between compaction times and the compressive strength of the seven days was put forward.