混凝土衬砌强度检测（回弹法））.docx

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1、混凝土衬砌强度检测（回弹法）无损检测能力与测评标准一、技能点能力要求能用回弹法检测混凝土衬砌强度。二、测评标准序号考核项评分标准分值说明1检测准备及率 定（6分）首先开箱清点设备及其辅助器具，清点无误 或申请缺件增补不扣分，未清点扣2分。2正式开始测试前应利用钢砧进行率定，率定 值为802,率定值超出范围，扣5分；无 此操作，此项不得分。15JGJ/T 23-2011 回弹法检 测混凝土 抗压强度 技术规程被测构件外观检查，对外表不符合要求的位 置及时提出。没有进行该过程扣5分。52测区选择及处 理（9分）根据结构图大小等情况确定测区个数。5JGJ/T 23-2011 回弹法检 测混凝土 抗压

2、强度 技术规程测区应选择平整的地方进行测试,如有杂物， 应先用磨石打磨干净。没有进行该过程扣5 分。5在选定的测区内绘制网格，如已有网格，应 先检查网格规格是否符合要求，那么扣5分。53检测过程及数 据记录（20分）检测信息填写完整、字迹清楚、按要求正确 填写（错填后经正确方式修改不扣分），涂 改一处扣0.5分，信息不完整一处扣1分， 字迹潦草无法识别扣2分，错误填写一处扣 1分。最多扣6分。6测试过程中，回弹仪应垂宜于混凝土外表进 行测试。此项不正确，扣五分。5测试点应位于测区的小网格内，相邻两测点 间距不宜小于3cm,出现偏离，每个扣0.5 分，扣完为止。5应大声朗读出单测点的测试结果，记

3、录人员 应对每个测点的数据进行准确记录。出现一 个错误，扣1分，扣完为止。5相邻两个测区间距应控制在2米以内，假设不 符合，扣1分；每个测区的测试数量应为16 个，少一个，扣2分。3在测试时,每个测点都应避开坑洞及石子等， 出现一个击打在石子或坑洞处且记录到记录 表上，那么扣1分，扣完为止。64数据分析及检 测结果提交（59 分）检测信息填写完整、字迹清楚、按要求正确 填写（错填后经正确方式修改不扣分），涂 改一处扣0.5分，信息不完整一处扣1分， 字迹潦草无法识别扣2分，错误填写一处扣 1分。最多扣6分。6计算步骤：1 .先去除最大的三个值及最小的三个值。无 此步骤，扣5分。2 .然后计算后

4、面的10个数的平均值。无此 步骤，扣5分。3 .根据规程附表查询每个测区对应的强度 值。无此步骤，扣5分。4 .根据规程计算该构件的强度推定值。无此 步骤，扣5分。20JGJ/T 23-2011 回弹法检 测混凝土 抗压强度 技术规程原始数据文件及解析结果、原始记录表提交。15试验结束后的 整理（6分）设备归位：关闭电源、设备清洁、装箱。3测点布置点应清理干净，未满足要求，扣0. 5 分/处。2现场用具及时上交。1合计总得分100Nondestructive Testing Capability and Evaluation Standard ofConcrete Lining Strengt

5、h Testing ( Rebound Method )1. Skill requirementsThe strength of concrete lining can be tested by rebound method.2. Evaluation standardSerial numberExamination itemMarking criterionScoresexplanationIDetectionpreparation (6 points)First, open the box and count the equipment and its auxiliary equipmen

6、t. No points will be deducted if the inventory is correct or if (here is a missing part in the application, and 2 points will be deducted if the inventory is not completed.2Before officially starting the test, the steel anvil should be used for calibration. The calibration value is 802. If the calib

7、ration value exceeds the range, 5 points will be deducted; without this operation, this item will not be scored.15JGJ/T23-2011Technical specification for inspecting of concrete compressive strength by rebound methodCheck the appearance of the component under test, and promptly propose the position w

8、here the surface does not meet the requirements. 5 points will be deducted if the process is not carried out.52Survey area selection and processing (9 points)Determine the number of survey areas according to the size of the structure diagram.5JGJ/T23-2011 Technical specification for inspecting of co

9、ncrete compressive strength byrebound methodThe test area should be tested on a Hat place. If there is any debris, it should be cleaned with a grindstone first. Without (his step, 5 points will be deducted.5Draw a grid in the selected survey area. If (here is a grid, check whether the grid specifica

10、tions meet the requirements first, and 5 points will be deducted.53InspectionThe test information is filled in completely,6Serial numberExamination itemMarking criterionScoresexplanationprocess and data recording (20 points)the handwriting is clear, and it is filled in correctly according to the req

11、uirements (no points will be deducted after incorrectly filled in), 0.5 points will be deducted for any corrections, 1 point will be deducted if (he informaUon is incomplete, and 2 points will be deducted if the handwriting is scribbled and unrecognizable. Fill in one point and deduct 1 point. Up to

12、 6 points will be deducted.During the test, the hammer should be tested perpendicular to the concrete surface.This item is incorrect, five points will be deducted.5The test points should be located in the small grid of the test area, and the distance between two adjacent test points should not be le

13、ss than 3cm. If there is any deviation, 0.5 points will be deducted for each point until the deduction is complete.5The test results of a single measuring point should be read aloud, and the recorder should accurately record the data of each measuring point. If an eiTor occurs, 1 point will be deduc

14、ted, until all deductions are made.5The distance between two adjacent measurement areas should be controlled within 2 meters, if not, 1 point will be deducted; the number of tests in each measurement area should be 16, 1 less, 2 points will be deducted.3During the test, each measuring point should a

15、void potholes and stones, etc. If one hits a stone or pothole and is recorded on the record sheet, 1 point will be deducted until the deduction is complete.64Data analysis and submission of test results (20 points)The test information is filled in completely, the handwriting is clear, and it is fill

16、ed in correctly according to the requirements (no points will be deducted after incorrectly filled in), 0.5 points will be deducted for any corrections, 1 point will be deducted if the information is incomplete, and 2 points will6Serial numberExamination itemMarking criterionScoresexplanationbe dedu

17、cted if the handwriting is scribbled and unrecognizable. Fill in one point and deduct 1 point,a maximum of 6 points will be deducted.Calculation steps:1. Remove the largest three values and the smallest three values first. Without this step, 5 points will be deducted.2. Then calculate the average of

18、 the next 10 numbers. Without this step, 5 points will be deducted.3. Check the intensity value corresponding to each suney area according to the schedule. Without this step, 5 points will be deducted.4. Calculate the estimated strength of (he member according to the regulations. Without this step,

19、5 points will be deducted.20JGJ/T 23-2011 回 弹法检测混 凝土抗压强 度技术规程Original data files and analysis results, original record form submission.15Arrangement after test (6 points)Equipment homing: power off, equipment cleaning, packing.3The measuring point layout points should be cleaned up, if the requirements are not met, 0.5 points will be deducted per point.2On-site appliances arc handed in in a timely manner.1Total score100