摘 要：本文概述了陕西省西柞高速公路沥青下面层ATB-30稳定碎石的特点，详细的绍介了原材料的选择、配合比和马歇尔试验结果、试验检测、路面施工工艺施工工艺及施工控制要点。O6Ð$t®æfbbs.3c3t.comÆ ºPB"关键词：ATB-30；下面层；配合比设计；施工；O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
0O6Ð$t®æfbbs.3c3t.comÆ ºPB"
引言O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"主线路面结构形式为：煤油稀释沥青透层+SBSI-C改性沥青封层+沥青稳定碎石下面层（ATB-30）10cm+改性沥青混凝土中面层（AC-25）7cm+SBS改性沥青混凝土上面层（AC-16）5cm。O6Ð$t®æfbbs.3c3t.comÆ ºPB"1O6Ð$t®æfbbs.3c3t.comÆ ºPB"
ATB-30结构层的特点O6Ð$t®æfbbs.3c3t.comÆ ºPB"随着我国高速公路的迅猛发展，对高速公路路面使用性能的要求也越来越高。大量的路面建筑材料，新工艺，新结构也都应运而生，以满足高速公路日趋增长的交通流量，渠化交通，高车速的要求。陕西省在高速公路建设中结合本地特点，大胆创新，在沥青混凝土路面下面层采用ATB-30沥青稳定碎石结构。ATB-30称为密级配沥青稳定碎石混合料，它与沥青混凝土的区别主要是公称最大粒径的不同，公称最大粒径通常等于26.5mm.ATB沥青稳定碎石下面层一般设计空隙率为3%~6%，最大不超过8%，且厚度较厚，路面铺筑之后具有良好的骨架密实结构。具有良好的防水、高温稳定、低温抗裂等特性，西柞高速公路下面层采用ATB结构层(厚度10cm) 实际上相当于粗粒式特粗粒式沥青混合料。由于半刚性水稳基层普遍存在路面反射裂缝，从而导致路面抗车辙能力不足和耐久性差，影响了沥青混凝土路面的使用寿命，为了减少此种病害的发生，在基层和面层之间设置了一层过渡性结构的新思路就应运而生了，ATB沥青稳定碎石下面层就属于此种结构形式，它相当于一种柔性基层的形式，具有延缓基层裂缝向中、上面层反射及提高路面抗车辙能力的作用。O6Ð$t®æfbbs.3c3t.comÆ ºPB"2O6Ð$t®æfbbs.3c3t.comÆ ºPB"
配合比设计O6Ð$t®æfbbs.3c3t.comÆ ºPB"ATB沥青稳定碎石级配组成介于I型与II型级配之间，是一种抗车辙，抗开裂，水稳定较好的级配，使混合料具有既有I型密实的特点，又具有II型高温性能较好的特点，ATB-30沥青稳定碎石的级配见（表）1。O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
ATB-30密级配沥青稳定碎石混合料矿料级配范围O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"
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表1O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"材料类型O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 通过下列筛孔(方孔筛，mm)的质量百分率%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
31.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 19O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 16O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 13.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 9.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.75O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.36O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 1.18O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.15O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.075O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
ATB-30O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 90~100O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 70~90O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 53~72O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 44~66O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 39~60O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 31~51O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 20~40O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 15~32O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 10~25O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 8~18O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 5~14O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 3~10O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2~6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
在施工前，参照<公路沥青路面施工技术规范>进行配合比设计.配合比设计采用标准马歇尔法，马歇尔的主要技术指标（见表2）O6Ð$t®æfbbs.3c3t.comÆ ºPB"马歇尔试验主要技术标准 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"
表2 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"技术指标O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 击实数/次O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 稳定度O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
KNO6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 空隙率%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 沥青饱合度%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 残留稳定度%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 矿料间隙率%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
ATB-30O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 双面各112O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| >15O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 3~6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 55~70O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| >85O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| >11O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
3O6Ð$t®æfbbs.3c3t.comÆ ºPB"
目标配合比O6Ð$t®æfbbs.3c3t.comÆ ºPB"3.1原材料O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"在进行目标配合比之前首先要进行原材料的试验检测，确保使用配合比设计的材料是否合格，其各项指标均要符合《公路沥青路面施工技术规范》(JTGF40-2000)的要求。O6Ð$t®æfbbs.3c3t.comÆ ºPB"粗集料采用锤式反击破碎机加工的花岗岩碎石。碎石的规格为20~30mm，10~20mm，5~10mm 3种。碎石具有良好的棱角性、扁平及细长颗粒含量、压碎值、密度，坚固性、安定性及有害物质含量应符合规范要求其中(花岗岩的沥青粘附性属于3级)。O6Ð$t®æfbbs.3c3t.comÆ ºPB"细集料采用0~5mm石屑，石屑的密度、砂当量符合规范要求。O6Ð$t®æfbbs.3c3t.comÆ ºPB"矿粉使用磨细的石灰岩矿粉。水泥采用P.032.5水泥 。O6Ð$t®æfbbs.3c3t.comÆ ºPB"沥青是决定混合料质量的关键。的沥青由业主提供，采用韩国SK-70A沥青。由于花岗岩的粘附性低，所以在生产时在沥青中掺加了0.3%的PL-1型沥青抗剥落剂。O6Ð$t®æfbbs.3c3t.comÆ ºPB"3.2确定试验级配O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"结合陕西省的气候和交通特点设计的ATB-30既要具有很好的骨架结构，还要有很好的抗水毁能力。矿料级配组成设计要按照：均匀，嵌挤，密实的要求进行，不能简单照搬规范规定级配范围的中值。可适当增加中间档次粗集料的用量，调整为骨架密实型结构，提高沥青混合料的抗车辙能力。ATB-30的级配曲线形状为：S型，其中筛孔尺寸为4.75，2.36，1.18mm的3个控制点偏向下限。通过计算和反复调整，确定了最佳级配曲线的矿料组成20~30mm碎石：:10~20mm碎石： 5~10mm碎石：石屑：水泥：矿粉=29：30：16：22：2：1（见表3、表4）。O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
ATB-30目标配合比矿料筛分及计算结果 表3 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"筛孔（mm）O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 37.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 31.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 19O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 16O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 13.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 9.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.75O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.36O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 1.18O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.15O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.075O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
通过率（%）O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 100.0O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 99.0 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 87.5 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 66.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 56.1 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 49.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 41.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 25.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 19.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 16.3 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.3 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 8.7 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 5.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.9 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
ATB-30目标配合比级配曲线图表 表4 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
3.3确定油石比O6Ð$t®æfbbs.3c3t.comÆ ºPB"分别用2.7%，3.1%，3.5%，3.9%，4.3%的油石比制作5组马歇尔试件，每组6块，成型时两面各锤击112次，沥青加热165℃，拌合锅温度165℃，击实温度145℃，通过马歇尔试验，.测定试件的密度，稳定度，流值，用真空法实测沥青混合料的最大理论密度，计算出空隙率，沥青饱合度，和矿料间隙率。（见表5.）O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
ATB-30目标配合比马歇尔试验数据汇总 表5O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"试验项目O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 油石比%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
2.7O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 3.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 3.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 3.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
密度(g/cm3)O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.390 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.401 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.422 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.433 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.429 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
理论密度(g/cm3)O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.552 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.546 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.534 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.518 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.500 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
空隙率(%)O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 6.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 5.7 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 3.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
饱和度(%)O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 48.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 53.3 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 62.3 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 71.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 76.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
间隙率(%)O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.3 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 11.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 11.7 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
稳定度(KN)O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 24.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 25.3 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.7 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 24.1 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 24.0 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
流值(0.1mm)O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.8 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 32.5 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 37.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 39.6 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 46.7 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
按照油石比设计方法：O6Ð$t®æfbbs.3c3t.comÆ ºPB"相应于密度最大值的油石比为4.01%O6Ð$t®æfbbs.3c3t.comÆ ºPB"相应于稳定度最大值的油石比为3.46%O6Ð$t®æfbbs.3c3t.comÆ ºPB"相应于要求空隙率范围中值的油石比为3.50%O6Ð$t®æfbbs.3c3t.comÆ ºPB"相应于要求饱合度范围中值的油石比为3.51%O6Ð$t®æfbbs.3c3t.comÆ ºPB"确定出最佳油石比OAC1=3.6%O6Ð$t®æfbbs.3c3t.comÆ ºPB"按各项合格指标范围中值确定最佳油石比OAC2=3.5%，最终确定最佳油石比为OAC=3.6%O6Ð$t®æfbbs.3c3t.comÆ ºPB"4O6Ð$t®æfbbs.3c3t.comÆ ºPB"
生产配合比设计 O6Ð$t®æfbbs.3c3t.comÆ ºPB"4.1生产配合比设计O6Ð$t®æfbbs.3c3t.comÆ ºPB"按目标配合比设计的集料比例，对沥青混合料拌和机进行冷料输入，待到拌和机达到实际生产状态时，从热料仓取出经振动筛筛分后的集料合成生产配合比级配，并尽量使其接近目标配合比曲线。(见表6、表7)O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
ATB-30生产配合比热料仓矿料级配组成 表6 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"筛孔（mm）O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 37．5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 31.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 19O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 16O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 13.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 9.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.75O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.36O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 1.18O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.15O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.075O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
通过率（%）O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 100O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 99.5 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 89.7 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 69.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 60.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 52.0 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 43.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.7 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 19.4 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 16.5 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.6 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 9.1 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 6.2 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.3 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
ATB-30沥青混合料生产级配曲线图 表7 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
4.2生产配合比验证O6Ð$t®æfbbs.3c3t.comÆ ºPB"对二次筛分后的各热料仓分别取样筛分试验，以确定各热料仓的材料比例。同时，根据各冷料的含水量反复调整冷料仓进料比例，以达到供料均衡，按目标配合比设计的最佳沥青用量及其±0.3%的沥青用量进行马歇尔试验，确定了生产配合比的最佳油石比为3.6%，粉胶比1.36。各项试验结果(见表8)O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
ATB-30生产配合比试验结果 表8 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"项目O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"
油石比O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 密度g/cm3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 理论密度g/cm3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 空隙率%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 饱和度%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 间隙率%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 稳定度KNO6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 流值0.1mmO6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 残留稳定度%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
3.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.390 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.516 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 5.0 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 59.7O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.4O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 27.4O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 33O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 88.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
3.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.402 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.504 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.0 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 66.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 32O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 84.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
3.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.408 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.495 O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 3.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 71.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 27.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 32.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 89.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
5O6Ð$t®æfbbs.3c3t.comÆ ºPB"
配合比验证 O6Ð$t®æfbbs.3c3t.comÆ ºPB"拌和机按生产配合比结果进行试拌、铺筑试验段，并取样进行了马歇尔试验、抽提试验，第二天从路上钻取芯样检测压实度、计算出空隙率，并对拌和后的沥青稳定碎石混合料委托进行车辙试验和水稳定性检验、低温弯曲试验。O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
抽提及矿料筛分结果 表9 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"油石比%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 通过下列筛孔（mm）的质量百分率%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
31.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 19O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 16O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 13.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 9.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.75O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2.36O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 1.18O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.3O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.15O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 0.075O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
3.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 99.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 89.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 69.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 59.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 51.7O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 43.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 26.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 19.0O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 15.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 12.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 9.0O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 6.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.8O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
桩 号O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| K55+200O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| K55+240O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| K55+280O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| K55+320O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| K55+360O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| K55+400O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| K55+440O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
压实度%O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 98.4O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 98.6O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 99.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 98.8O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 99.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 99.1O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 98.8O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
路面取芯压实度检没结果 表10 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"沥青混合料试验结果汇总 表11 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"检测项目O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 稳定度O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
KNO6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 流值O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
0.01mmO6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 空隙率O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 沥青饱O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
和度%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 残留稳O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
定度%O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 矿料间O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
隙率%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 压实度%O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 动稳定度O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
次/mmO6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 冻融劈裂O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
%O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 低温弯曲O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
检测数据O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 27.5O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 38.2O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4.0O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 64.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 90.8O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 11.4O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 98.9O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 4162O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 90O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 2100O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
通过对试验段的检测.混合料各项指标均达到规范要求。O6Ð$t®æfbbs.3c3t.comÆ ºPB"6O6Ð$t®æfbbs.3c3t.comÆ ºPB"
施工阶段的工艺说明O6Ð$t®æfbbs.3c3t.comÆ ºPB"6.1拌和O6Ð$t®æfbbs.3c3t.comÆ ºPB"ATB-30沥青混合料采用具有二次除尘设备的间歇式具有自动性能的江苏无锡生产的雪桃AMP3000-C型沥青拌和站进行拌制，生产能力为150T/h左右，其生产工艺与普通沥青混凝土拌合差别不大。在拌和过程中水泥与矿粉填料能够单独计量加入。沥青混合料的拌和时间应以混合料拌和均匀，所有矿料颗粒全部裹覆沥青结合料为度，并经试拌确定，间歇式拌和机每锅拌和时间宜为30~50s(其中干拌时间不得小于5s)取中值40s为湿拌时间。O6Ð$t®æfbbs.3c3t.comÆ ºPB"拌好的沥青混合料应均匀一致，无花白料，无结团块或严重的粗料分离现象。不符合要求时不得使用，并应及时调整。每次放料时尽量能够让沥青混合料表面在储料仓中上部位，不能每次要把储料仓全部放空，防止沥青混合料在成品储料仓中离析现象发生。在放往运输车中的混合料在分为三部分放料，先放运输车的前O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
部，然后放到运输车的最后部位，最后再放到运输车的中部，以防止在放料过程中的离析现象（如图12）O6Ð$t®æfbbs.3c3t.comÆ ºPB"运输车正确的装料方式 图12 O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"出厂的沥青混合料应采用数显式直接插入式方法测量运料车中混合料的温度，拌好的沥青混合料不立即铺筑时，可放成品仓贮存，贮料仓无保温设施时，允许的贮料时间应符合摊铺的温度要求为准。O6Ð$t®æfbbs.3c3t.comÆ ºPB"ATB-30级配的优点是具有良好的高温性能，缺点是难于压实，为了确保路面的压实度达到要求，混合料拌和时各流程温度宜选择比表中偏上限的温度见表13。O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
沥青混合料的施工温度 表13O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"
O6Ð$t®æfbbs.3c3t.comÆ ºPB"沥青加热温度/℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 150-160O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
矿料温度/℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 170-180O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
混合料出厂温度/℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 正常范围150-165超过180废弃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
混合料运输到现场温度/℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 不低于155O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
摊铺温度℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 正常施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 不低于150O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
低温施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 不低于160O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
初压温度℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 正常施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 135-145O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
低温施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 145-155，不低于135O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
复压温度℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 正常施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 130-140，不低于125O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
低温施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 135-145， 不低于125O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
终压温度℃O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 正常施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 105-125O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
低温施工O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
| 115-135，不低于100O6Ð$t®æfbbs.3c3t.comÆ ºPB" O6Ð$t®æfbbs.3c3t.comÆ ºPB"
|
O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
6.2摊铺O6Ð$t®æfbbs.3c3t.comÆ ºPB"采用两台ABG423摊铺机呈梯队联合作业，一次性摊铺全幅，摊铺机具有自动找平功能，具有振捣夯击功能，且精度高，摊铺前根据既定的松铺系数调整慰平板的高度和横坡，采用方木支垫，调整好起始仰角；并加热慰平板达到100度。第一台(前行)摊铺机的摊铺厚度，边缘采用钢丝绳拉线，中间采用铝合金梁来控。第二台(后行)摊铺机的摊铺厚度。边缘采用钢丝绳拉线，中间采用滑撬来控制。O6Ð$t®æfbbs.3c3t.comÆ ºPB"摊铺混合料时，摊铺机的前进速度与供料速度协调，在摊铺过程中不准随意变换速度，以确保摊铺路面的均匀不间断的摊铺，尽量避免中途停机。在卸料的过程中，要设专人指挥，保证上一车料卸完后，下一车料能及时供料，不得中途停机等料，应以匀速行驶，以保证混合料均匀，不间断的摊铺，以减少温度离析造成的混合料的不密实。摊铺机的螺旋送料器要埋入混合料2/3以上，可以有效的避免全断面发生离析的现象和减缓摊铺温度的降低速度，为沥青混合料的高温下碾压密实提供有利的条件。O6Ð$t®æfbbs.3c3t.comÆ ºPB"由于ATB-30沥青混合料具有料径大，容易产生离析的特点，在施工中要注意如下几点：O6Ð$t®æfbbs.3c3t.comÆ ºPB"减少温度离析的影响，ATB-30沥青混合料在高温下具有和易性，易于碾压密实的特点，应防止温度降低带来混合料的离析，碾压不密实的缺陷，因此混合料的运输、卸料等过程要尽量缩短时间以减少混合料热量损失，运输要求采用大吨位的车辆，并加盖篷布，以防止混合料温度降低过快。O6Ð$t®æfbbs.3c3t.comÆ ºPB"减少摊铺机收料斗的收料频度，频繁的收料将导致料斗的两侧的大粒径粒料的集中，容易产生大面积的离析现象。一般摊铺3~5车后收斗一次，并保证卸料的过程中边前进边收斗，这样可以使粗细混合料均匀分布。而且可以有效的避免边部混合料温度降低带来的影响。O6Ð$t®æfbbs.3c3t.comÆ ºPB"7O6Ð$t®æfbbs.3c3t.comÆ ºPB"
碾压 O6Ð$t®æfbbs.3c3t.comÆ ºPB"由于ATB-30沥青稳定碎石下面层厚度较厚（10cm），在下面层施工中，不可过分地强调平整度指标面放松对压实度的要求，因为压实度是保证ATB-30施工质量的重要指标。碾压是ATB-30施工中的重要的一环，碾压必须采用追随、紧跟、高频、低幅方式，遵循初压、复压、终压的碾压组合。O6Ð$t®æfbbs.3c3t.comÆ ºPB"对于ATB-30沥青混合料，由于集料粒径较大，复压采用振动压路机与重型轮胎压路机联合碾压的组成方式，在复压时，宜先用振动压路机进行碾压，其振动频率为30-50Hz、振幅为0.3-0.8mm，且要求采用大吨位的压路机，采有DYNAPAC （CC622）2台压路机进行碾压，采用2台26t胶轮压路机揉压，轮胎充气不小于0.5MPa。O6Ð$t®æfbbs.3c3t.comÆ ºPB"为了防止碾压过程中集料被过分压碎，振动压路机的压实后温度不宜低于100℃。O6Ð$t®æfbbs.3c3t.comÆ ºPB"为了避免混合料形成鼓包，振动压路机采用较大的振频和振幅，相邻重叠宽度为10-20cm。倒车时应先停止振动，并在向另一方向运动事再开始振动。O6Ð$t®æfbbs.3c3t.comÆ ºPB"碾压过程中有沥青混合料粘轮现象时，可向碾压轮洒少量的水或植物油，严禁喷洒柴油、机油。O6Ð$t®æfbbs.3c3t.comÆ ºPB"在碾压施工过程中，应注意以下几点：O6Ð$t®æfbbs.3c3t.comÆ ºPB"（1）碾压是ATB-30沥青稳定碎石最重要的一环，保证及时碾压非常重要，碾压时要求按照“高温、追随、高幅”的原则。O6Ð$t®æfbbs.3c3t.comÆ ºPB"（2）初压要在混合料摊铺后立即进行，初压温度控制在145-155℃左右。初压速度不能太快，一般为1.5-2.0km/h。最后进行静压光面消除轮迹，提高平整度。终压温度不行低于100℃，碾压速度为2-3km/h。O6Ð$t®æfbbs.3c3t.comÆ ºPB"（3）特别要注意的是，在碾压2个段落的交接处时，往往会因欠压面使实不到位，造成早期破坏。O6Ð$t®æfbbs.3c3t.comÆ ºPB"（4）压路机碾压过程中不要大量喷水，且水应成雾状，以免使表面温度下降过快，造成碾压不实。O6Ð$t®æfbbs.3c3t.comÆ ºPB"8O6Ð$t®æfbbs.3c3t.comÆ ºPB"
总结 O6Ð$t®æfbbs.3c3t.comÆ ºPB"从试验检测结果看，沥青碎石的高温性能、水稳定性、低温抗裂性比较良好，车辙试验动稳定度比较高，从施工性能来看，混合料由于粗料多，容易出现离析，因此要从生产能力、施工工艺上严格控制。O6Ð$t®æfbbs.3c3t.comÆ ºPB"对于10cmATB-30混合料压实困难及表面空隙率较大的现象，经过多次试验和研究，分别对机械组合、碾压工艺和混合料矿料级配进行了优化，通过下面层大量芯样的观察，沥青混合料达到了骨架密实的理想状态，成功解决了ATB-30施工中的难点。O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"O6Ð$t®æfbbs.3c3t.comÆ ºPB"
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