[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）Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
1、简要写出普通沥青混合料配合比设计流程。Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
答：（1）根据沥青混合料类型选择规范规定的矿料级配范围。Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（2）确定工程设计级配范围Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（3）材料选择取样、试验Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（4）在工程设计级配范围优选1-3组不同的矿料级配Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（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Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（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Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（7）技术经济分析确定1组设计级配及最佳沥青用量Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（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。Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
（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。Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
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）3.85Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
4.01Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.53Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.96Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
4.00Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.73Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.86Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.97Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.93Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
4.05Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.52Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3.83Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
解： R=3.85Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
Cv=0.046Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
Rd/(1-ZaCv)=3.1/(1-1.645*0.046)=3.35Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
R>Rd/(1-ZaCv)Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
合格，得满分20分。Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
3、某一级公路沥青路面总厚度检测值（cm）分别为： 15.1  14.3 14.5Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.4Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.7Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
15.0Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
15.3Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.2Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.8Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.9Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.5Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.3Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.8Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.4Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
15.2Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
14.7Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
按保证率95%，计算其厚度代表值。（已知t0.95/√16=0.438）Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
解：X=14.7Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
S=0.34Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
XL=X- t0.95*S /√16=14.7-0.34*0.438=14.6Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
其厚度代表值为：14.6cmÖm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
4、简要叙述沥青混合料中沥青含量有哪些测定方法Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
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。Öm(áx¥<ýE{bbs.3c3t.com.ç ­9¶äxh
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