[试验检测师] 按考试大纲精编（公路问答题试验工程师） [复制链接]

按考试大纲精编（公路问答题试验工程师）Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
1、简要写出普通沥青混合料配合比设计流程。Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
答：（1）根据沥青混合料类型选择规范规定的矿料级配范围。Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（2）确定工程设计级配范围Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（3）材料选择取样、试验Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（4）在工程设计级配范围优选1-3组不同的矿料级配Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（5）对设计级配，初选5组沥青用量，拌合混合料，制作马歇尔试件Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（6）确定理论最大相对密度、测定试件毛体积相对密度进行马歇尔试验Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（7）技术经济分析确定1组设计级配及最佳沥青用量Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（8）进行车辙试验，浸水马歇尔试验，冻融劈裂试验，矿渣膨胀试验等。Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
（9）完成配合比设计，提交材料品种、配比、矿料级配、最佳沥青用量。Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
2、某高速公路水泥稳定碎石基层，已知设计抗压强度Rd=3.1MPa,现测得某段的无侧限抗压强度数值如下，对该段强度结果进行评定并计算其得分值。（规定分为20分，保证率为95%，Za=1.645）3.85Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
4.01Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.53Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.96Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
4.00Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.73Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.86Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.97Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.93Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
4.05Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.52Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3.83Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
解： R=3.85Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
Cv=0.046Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
Rd/(1-ZaCv)=3.1/(1-1.645*0.046)=3.35Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
R>Rd/(1-ZaCv)Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
合格，得满分20分。Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
3、某一级公路沥青路面总厚度检测值（cm）分别为： 15.1  14.3 14.5Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.4Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.7Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
15.0Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
15.3Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.2Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.8Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.9Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.5Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.3Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.8Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.4Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
15.2Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
14.7Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
按保证率95%，计算其厚度代表值。（已知t0.95/√16=0.438）Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
解：X=14.7Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
S=0.34Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
XL=X- t0.95*S /√16=14.7-0.34*0.438=14.6Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
其厚度代表值为：14.6cmHxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
4、简要叙述沥青混合料中沥青含量有哪些测定方法Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
射线法：测定用粘稠石油沥青拌制的热拌沥青混合料中沥青用量，适用于沥青路面施工时沥青用量检测，以快速评定拌合厂工作质量。Hxr¹‚ÿþq­‘bbs.3c3t.com8ôe_ÉE7e"“
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