Properties of Lightweight Matrix according to Different Types of Alkali Stimulants
Won-Jong Kim1, Su-Jeong Pyeon2, Ha-Young Song3, Sang-Soo Lee4
1Won-Jong Kim, Department of Architecture Engineering, Han Bat National Univercity, Daejeon, Korea.
2Su-Jeong Pyeon, Department of Architecture Engineering, Han Bat National Univercity, Daejeon, Korea.
3Ha-Young Song, Department of Architecture Engineering, Han Bat National Univercity, Daejeon, Korea.
4Sang-Soo Lee, Department of Architecture Engineering, Han Bat National Univercity, Daejeon, Korea.
Manuscript received on 17 August 2019 | Revised Manuscript received on 27 August 2019 | Manuscript Published on 16 September 2019 | PP: 106-111 | Volume-8 Issue-2S6 July 2019 | Retrieval Number: B10200782S619/2019©BEIESP | DOI: 10.35940/ijrte.B1020.0782S619
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Recently, lightweight wall systems have been used mainly due to the appearance of flexible buildings, but EPS, which is flammable, is the main material. The damage caused by toxic gas in fire is recognized as a problem. NaOH, KOH and Ca(OH)2 were used as alkali stimulants and the properties of the matrix were evaluated according to the addition ratio of alkali stimulants. The addition of an alkali stimulant increases the pH and increases the alkali activity of the blast furnace slag, thereby changing the performance of the matrix. When NaOH and KOH are used as alkali stimulants, the density of the cured product is low and the incidence of the internal void of the cured product is high. When Ca(OH)2 is used as an alkali stimulant, it shows the best performance when measuring pH, setting time, and strength. This seems to be due to the ionization degree of the (OH) group. However, the incidence of voids was the lowest. When NaOH and KOH are used as alkali stimulants, the density of the cured product is low and the incidence of the internal void of the cured product is high. When Ca(OH)2 is used as an alkali stimulant, it shows the best performance when measuring pH, setting time, and strength. This seems to be due to the ionization degree of the (OH) group. However, the incidence of voids was the lowest.
Keywords: Lightweight Matrix, Alkali Stimulants, pH, Setting Time, Strength, Density, Porosity.
Scope of the Article: Properties and Mechanics of Concrete