Reinforced Mortar, High-Elasticity Cushioning Material, and Strengthened Concrete
Daewoo E&C announced on the 18th that it has developed a 'Smart Triple Floor Structure' that can drastically reduce apartment floor noise. Daewoo E&C completed the patent registration for the related technology last month (Patent No. 10-2210028) and has also filed two additional patents for technologies to construct this structure.
The Smart Triple Floor Structure consists of ▲strengthened concrete, ▲high-elasticity cushioning material, and ▲reinforced mortar. Compared to conventional apartment floor structures, the thickness of the materials has increased and performance has been enhanced, with an added technology that notifies noise generation through the wall pad inside the unit.
In conventional apartments, when constructing the floor, soundproofing material is laid on top of the concrete slab, and a lightweight concrete layer is placed to facilitate the installation of heating pipes. Heating pipes are installed on this lightweight concrete layer, mortar is poured, and then floor finishing materials such as flooring or tiles are applied.
To reduce the main cause of floor noise, heavy impact sound, Daewoo E&C increased the strength of the concrete slab and the thickness of the soundproofing material and mortar.
By installing a self-developed dry pad, the mortar thickness was increased from the existing 40mm to 70mm (reinforced mortar), the soundproofing material thickness was increased from 30mm to 40mm (high-elasticity cushioning material), and additional rebar was installed in the concrete slab (strengthened concrete) to improve floor strength.
The Smart Triple Floor Structure can omit the lightweight concrete process, which takes at least 3 days from construction to curing, shortening the construction period by about 3 days. Additionally, by changing the wet construction to dry construction, it offers the advantage of easier installation.
A Daewoo E&C official said, "Through years of experiments, we developed an optimal floor structure that can reduce floor noise and improve constructability," adding, "We plan to apply it on-site after obtaining the certified floor structure performance report that recognizes its blocking performance."
Meanwhile, the government plans to abolish the pre-certification system called the Certified Floor Structure system from July 2022 and apply a post-verification system that checks floor impact sound blocking performance after apartment construction.
In addition to the technology developed this time, Daewoo E&C has filed patents for a floor structure using point-support type soundproofing material and a fixing pad that can fix the height of heating pipes depending on mortar thickness, aiming to complete the development of these technologies before the system changes.
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