Construction Particulate Matter Concentration Data

The presented data is obtained from a systematic experimental investigation of construction activity (i.e., building a solid concrete block wall). The experimental activity was executed from 3:20 to 4:00 (i.e., 40 minutes). The preparatory works such as arranging the monitoring stations and conveying materials are conducted during the initial 4 minutes. The mixing task was executed within 16 minutes (i.e., 3:24 to 3:40). Solid concrete block laying was executed in 20 minutes from 3:40 to 4:00. The sensors were kept at an 1 m horizontal distance from the PM source and 0.8 m vertical distance from the ground level. The samples are collected at 2 seconds time interval for all the sensors. The first worksheet contains PM10 concentration measured by Alphasense OPC-N2 sensors. The readings are filtered to 10 minutes moving average and presented from the beginning of the activity start time only. PM concentration measured by A1 and A2 sensors shows a higher correlation during the mixing task as both of them monitored the mixing task directly. The second worksheet contains PM10 concentration measured by Sharp GP2Y1010 sensors. The readings are filtered to 10 minutes moving average and presented from the beginning of the activity start time only. PM concentration measured by D1 and D2 sensors measured the same trend during the activity.本数据集源自针对建筑施工作业（即砌筑实心混凝土砌块墙体）开展的系统性实验研究。本次实验作业时长40分钟，自3:20启动至4:00结束。实验前期准备工作（包括布设监测站点、运送施工物料）于前4分钟内完成。物料拌合作业耗时16分钟，具体时段为3:24至3:40。实心混凝土砌块砌筑作业耗时20分钟，时段为3:40至4:00。所有传感器均设置于距颗粒物（Particulate Matter, PM）污染源水平距离1米、距地面垂直高度0.8米的位置。所有传感器均以2秒为采样间隔采集数据。首个工作表包含由Alphasense OPC-N2型传感器测得的PM10浓度数据，所有读数均经过10分钟移动平均滤波处理，且仅呈现自作业启动时刻起的有效数据。A1与A2传感器测得的颗粒物浓度在拌合作业阶段呈现出更高的相关性，因二者均直接监测了拌合作业过程。第二个工作表包含由Sharp GP2Y1010型传感器测得的PM10浓度数据，该部分数据同样经过10分钟移动平均滤波处理，且仅呈现自作业启动时刻起的有效数据。D1与D2传感器测得的颗粒物浓度在整个作业过程中呈现出一致的变化趋势。