Effects of Half-Precast Concrete Slab System on Construction Productivity

Abstract

A half-precast concrete slab system (HPCSS) is reported to exhibit excellent structural performance when compared with traditional slab systems. However, there is a lack of extant research examining the construction issues of an HPCSS. Thus, in this study, we analyze the construction process and productivity of applying an HPCSS by using a simulation method with the data collected from an actual construction case. The results indicate that (i) the construction productivity of HPCSS is 1.7 times that of a traditional slab system, (ii) the cost per productivity unit of HPCSS exceeds that of a traditional slab system, and (iii) critical resources affecting the HPCSS productivity include form crew and rebar crew. The results of this study suggest that it is possible to develop an optimal construction plan of a construction site in which an HPCSS is installed, and that the HPCSS can be actively applied in the future.

Development of low drying shrinkage foamed concrete and hygro-mechanical finite element model for prefabricated building fasçade applications

“…Instead, the quality assurance can be improved by prefabrication in factory. Moreover, it is more environmental friendly and the productivity is higher to adopt prefabricated reinforced concrete elements compared to traditional cast-insitu method [16,31,14].…”

Bending Performance of Half-Slab Styrofoam Mortar with Glazed Nylon Fiber

“…This is because the application of this method needs less crew to finish the slab construction. Besides, as half-slab is only used as formwork, the design strength of the slab is focused on receiving both self-weight of concrete and its live load during installation [3,4].…”

Experimental and numerical assessment of the flexural behaviour of semi-precast-reinforced concrete slabs

“…Therefore, semi-precast slab systems have been adopted to reduce the weight, and in situ concrete overtopping is practised in many projects (Pessiki et al, 1995). Cho et al (2017) investigated the construction productivity of semi-precast slab systems and reported that it is 1.7 times that of a conventional in situ RC slab system. Despite of widely recognised practice, the knowledge on the material and structural performance of semi-precast-RC slab system is limited.…”