Concrete pouring activity is essential for the schedule and quality of the structural work construction. In practice, the process of concrete pouring is frequently congested and interrupted due to many unforeseeable reasons. The primary purpose of this study is to explore the productivity of concrete trucks for multistory building projects. The interview technique and work sampling method have been employed to collect the necessary data. Based on the literature review and experts’ opinions, twenty-five factors affecting the productivity of pouring concrete have been found and discussed. Among them, there are seven factors identified as different from previous studies. Through two case studies of the hospital project, the actual average productivity of one concrete truck used to pour concrete into columns and walls is 0.184 m³/min by using a truck-mounted pump and 0.087 m³/min by using a tower crane. These productivities have been then determined based on discrete event simulation (DES). The simulation results indicated that the simulated productivity is higher than the actual productivity of approximately 16% and 13% for truck-mounted pump and tower crane, respectively. It is concluded that DES is a handy simulation tool for construction operations before the period of implementation. Based on the relationship between events of the process of concrete pouring, two relevant solutions have been proposed to enhance the productivity of concrete trucks. The results of this study may help practitioners manage the concreting activities in their projects with higher productivity.

混凝土浇筑活动对于结构工程的进度和质量至关重要。在实践中，由于许多不可预见的原因，混凝土浇筑的过程经常被堵塞和中断。这项研究的主要目的是探索用于多层建筑项目的混凝土卡车的生产率。访谈技术和工作抽样方法已被用来收集必要的数据。根据文献综述和专家意见，发现并讨论了影响浇筑混凝土生产率的25个因素。其中，有七个因素被确定与以前的研究不同。通过对医院项目的两个案例研究，用于将混凝土倒入圆柱和墙壁的一辆混凝土卡车的实际平均生产率为0.184 m³通过使用/分钟车装泵和0.087米³通过使用塔式起重机/分钟。然后，基于离散事件模拟（DES）确定了这些生产率。仿真结果表明，模拟生产率比卡车车载泵和塔式起重机的实际生产率分别高出约16％和13％。结论是，DES是在实施阶段之前用于施工操作的便捷仿真工具。基于混凝土浇筑过程中各事件之间的关系，提出了两种相关的解决方案来提高混凝土卡车的生产率。这项研究的结果可能有助于从业人员以更高的生产率管理其项目中的混凝土活动。