A Study on the Floor Impact Noise of Small Size Multi Residential House with Light-weight Dry Walls

Kim, Tae Min; Bae, Jin-Young

doi:10.5050/ksnve.2021.31.5.551

Cited by 1 publication

(1 citation statement)

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“…According to the National Statistical Office's 2019 Population and Housing Survey in August 2020, the number of apartments, including apartments, was about 14 million last year, accounting for 77.2% of all houses, of which 11.287 million were 80.6% of apartments of these, the proportion of condominiums increased 4.3 percent year-on-year, and demand for condominiums is increasing every year. With the changing housing trends reflecting the needs of the domestic market, construction changes are being made to maximize the availability of housing by actively responding to various demand for space utilization by consumers for sustainable housing culture such as well as durability [1]. In addition, due to interlayer noise problems when living apartments, 99.9% of private apartments completed between 2007 and 2017 and 96.8% of public apartments (Ministry of Land, Infrastructure and Transport, structure of 500 or more apartments nationwide) are continuing to be converted.…”

Section: Introduction 1backgroundmentioning

confidence: 99%

Properties of CLC According to Replacement Ratio of Cao-CSA Expansive Additive

Kim,

Lee,

Hwang

et al. 2023

Teh. glas. (Online)

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According to the National Statistical Office's 2019 Population and Housing Survey in August 2020, the number of apartments, including apartments, was about 14 million last year, accounting for 77.2% of all houses, of which 11.287 million were 80.6% of apartments. Based on this change in housing trends, researchers have developed and studied cellular light-weight concrete (CLC) that can be cured at room temperature and normal pressure with advantages such as light weight, insulation, and construction. There have been several studies in Korea, including state-run projects, but they have not been commercialized, but the biggest reason is that stability has not been secured. Therefore, to improve the reliability of CLC that can be cured at normal temperature and pressure, this study attempts to analyze the properties of CLC by incorporating CaO-CSA expansive additive. Based on the drying density of 0.55-0.65 kg/m3, cement, blast furnace slag, animal foaming additive and fiber are utilized to analyze the properties of CLC with CaO-CSA expansive and the results are as follows. By using the CaO-CSA expansive additive, it is determined that the formation of calcium hydroxide and ettringite fills the CLC between the tobermorite layers and the internal structure becomes dense. Currently, based on KS F 2701, the compression strength based on 0.6 items is more than 4.9 MPa, and the strength is about twice as strong as that of the existing CLC, and durability of the CLC are improved by incorporating CaO-CSA expansive additive.

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Section: Introduction 1backgroundmentioning

confidence: 99%