Technical Study on Construction Technology and Quality Control of FM2 - Class Concrete Floor Slabs for a Data Center Project in Indonesia
DOI:
https://doi.org/10.46799/adv.v4i11.759Keywords:
data center, concrete floor, FM2, flatness, construction technology, quality controlAbstract
Using the construction of an FM2-class concrete floor slab for a data center project in Indonesia as an engineering case study, this paper investigated concrete floor construction techniques and surface flatness quality control based on the approved FM-Class Concrete Floor Slab Works method statement. Following the on-site construction sequence, the study examined the primary factors affecting floor flatness during site preparation, concrete placement zoning, guide rail elevation control, concrete placement and vibration, truss screeding, secondary surface leveling, power troweling, curing, and protection of completed work. It also established relationships between construction procedures and quality control indicators. Based on these findings, an integrated quality control framework was developed by incorporating ASTM E1155, the TR34 FM classification system, and the 2-m straightedge measurement method specified in GB 50209. The framework established a closed-loop process comprising construction process control, preliminary inspections, standardized testing, defect rectification, retesting, and final acceptance. Field measurements demonstrated that appropriate control of construction zoning, guide rail elevations, concrete supply, and the timing of screeding and power troweling enabled the floor to satisfy the specified FM2-class flatness requirements and the 2-m straightedge acceptance criteria under GB 50209. The findings indicated that the final floor flatness depended on the combined effects of multiple construction activities rather than any single operation, particularly surveying and setting out, concrete workability control, placement coordination, mechanical screeding, and manual finishing. The study concluded that implementing a comprehensive quality control system emphasizing precise elevation control, continuous screeding operations, and measurement-based feedback was essential for achieving the required surface flatness and construction quality of high-specification concrete floors.
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