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某一级公路处于城市郊区、施工期间社会车辆流量较大,基层铺筑完工后需要开放交通。其中A合同段里程桩号为K0+000~K10+500,主线长10.5km,一次建成双向四车道,路基宽24.5m。该路面结构为:20cm厚石灰稳定土底基层,18cm厚二灰砂砾基层,5cm厚沥青混凝土下面层,4cm厚沥青混凝土表面层。施工单位的部分施工工艺如下:
(1)二灰砂砾拌和设备,采用双卧轴强制连续式搅拌机,通过调整喂料皮带的转速及冷料仓口开启高度,计量每种原材料用量。拌和用水通过流量传感器控制。
(2)拌和料运输全部采用5t自卸汽车以减轻对下层的影响。
(3)摊铺采用摊铺机,半幅基层宽11.15m,采取两次摊铺成型。
(4)碾压,采用振动压路机,先振压2遍,再静压2遍,至密实。
(5)二灰砂砾碾压结束,表面开始泛白即及时进行洒水养生,7d后开放交通。
路面施工完成后,施工单位进行了施工质量自检。主要检查内容有:沥青混凝土面层的压实度、渗水系数、摩擦系数、构造深度、厚度、中线平面偏位、纵断高程、路面宽度及横坡,检测的所有指标均符合要求。
问题:
判断施工工艺中第(1)~第(4)条是否正确?如不正确,将其改正。
第5条存在什么问题?说明理由。
根据以上施工单位的自检情况,是否可以确定该路面工程为合格工程?说明理由。
请帮忙给出每个问题的正确答案和分析,谢谢!

A.5km,一次建成双向四车道,路基宽24.5m。该路面结构为:20cm厚石灰稳定土底基层,18cm厚二灰砂砾基层,5cm厚沥青混凝土下面层,4cm厚沥青混凝土表面层。施工单位的部分施工工艺如下:
B.15m,采取两次摊铺成型。
【参考答案】

问题 1 答案解析:第(1)、(2)、(3)条正确。第(4)条中“先振压2遍再静压2遍”不正确。应“先静压再振压”。......

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