Browse > Article
http://dx.doi.org/10.5345/JKIBC.2022.22.5.441

Fluidity and Strength Properties of Non-Sintered Cement Mortar according to the Addition of Superplasticizer  

Jang, Kyung-Su (School of Architecture, Yeungnam University)
Na, Hyeong-Won (HaeWon)
Byun, Hui-Jae (School of Architecture, Yeungnam University)
Hyung, Won-Gil (School of Architecture, Yeungnam University)
Publication Information
Journal of the Korea Institute of Building Construction / v.22, no.5, 2022 , pp. 441-450 More about this Journal
Abstract
In this study, the fluidity and strength characteristics of NSC mortar according to the type and rate of addition of superplasticizer were analyzed to secure the fluidity of NSC composed of only slag and ash. Through the flow test, it was found that the fluidity of NSC was related to the basicity according to the binder condition, and the lower the reactivity, the higher the fluidity. When polycarboxylate is added, NSC mortar is considered to be more advantageous than plain mortar in terms of securing fluidity. As a result of the strength tests of NSC mortar containing Lignin or Polycarboxylate superplasticizer, it was found that the strength tends to increase as the basicity increases. In addition, when polycarboxylate is added, it is judged that the NSC mortar can secure adequate fluidity and strength at the same time. Through this experiment, an appropriate binder condition that satisfies the flowability while securing the strength was derived.
Keywords
non-sintered cement; basicity; superplasticizer; flow; strength;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kang SP. A study on the effect of high-calcium fly ash on the compressive strength of the portland blast-furnace slag cement concrete. Journal of the Construction and Environment Research Institute. 2012 Oct;7(1):22-30.
2 Lee SH. Consideration of cautions regarding the use of admixtures and admixtures in cement and concrete. Korea Cement Association Cement Symposium; 2011 July 7-8; Chungju,Korea. Seoul (Korea): Korea Cement Association; 2011. p. 38-46.
3 Koh KT, Ryu GS, Lee JH, Kang HJ, Jeon YS. Flowability and compressive strength of cementless alkali-activated mortar using blast furnace slag. Journal of the Korean Recycled Construction Resources Institute. 2011 Mar;6(1):63-71.
4 Kong TW. Development of normal strength-high fluidity concrete using all-in-one polycarboxylate-based superplasticizer with viscosity modifying agent [doctoral thesis]. [Seoul (Korea)]: Hanyang University. 2022. p. 1-8.
5 Kim JH. A study on the effects of crystalline change of fa-bfs system geopolymer ceramics to thermal properties [doctoral thesis]. [Chun Cheon (Korea)]: Kangwon National University. 2017. 18 p.
6 Hwang HJ, Kim HS, Jeon JY, Ryu DH, Park SJ, Park HC. The experimental study on the fundamental properties of high-calcium fly ash based non-cement inorganic binder. Proceedings of the Korea Concrete Institute; 2011 Nov 9-11; Pyeongchang, Korea. Seoul (Korea): Journal of The Korea Concrete Institute; 2011. p. 329-30.
7 Lee HY, Moon KJ, Song H, Bae SC, Hyung WG. A study on the chemical resistance of non-sintered cement mortar. Construction and Environment Research Institute. 2011 Dec;6(2):19-26.
8 Cho SW, Na HW, Hyung WG. Properties of cement mortar according to mixing of circulating fluidized bedfly ash and pulverized coal fly ash based on blast furnace slag. Journal of the Korea Institute of Building Construction. 2021 Apr; 21(2):141-8. https://doi.org/10.5345/JKIBC.2021.21.2.141   DOI
9 Choi SW. Engineering properties of low carbon high strength concrete with ground granulated blast-furnace slag-based blended cement [doctoral thesis]. [Daejeon (Korea)]: Chungnam National University. 2015. p. 10-11.
10 Roy DM. Alkali-activated cements opportunities and challenges. Cement and Concrete Research. 1999 Feb;29(2):249-54. https://doi.org/10.1016/S0008-8846(98)00093-3   DOI
11 Choi JJ. Kinds and properties of superplasticizer. Magazine of the Korea Concrete Institute. 2001 May;13(3):32-7. https://doi.org/10.22636/MKCI.2001.13.3.32   DOI
12 Song JK, Yang KH, Song KI. Importance and Characteristics of Geopolymer Concrete Technology. Magazine of RCR. 2017 Mar;12(2):8-15. https://doi.org/10.14190/MRCR.2017.12.1.008   DOI
13 Chang JH. Charaterization of water reducing agents affecting material properties of alkaline activated mortar. [doctoral thesis]. [Cheongju (Korea)]: Cheongju University. 2015. p. 57-97.
14 Smith MA. Slag/fly ash cement. World Cement Technology. 1977 Nov;8(6):223-33.
15 Li Y, Yang C, Zhang Y, Zheng J, Guo H, Lu M. Study on dispersion, adsorption and flow retaining behaviors of cement mortars with TPEG-type polyether kind polycarboxylate superplasticizers. Construction and Building Materials. 2014 Aug;64(14):324-32. https://doi.org/10.1016/j.conbuildmat.2014.04.050   DOI