Feasibility Study of SBR-Modified Cementitious Mixtures for Use as 3D Additive Construction Materials

Polymers

Jaeheum Yeon¹  Kyu-Seok Yeon²  HeeJun Lee³  KwanKyu Kim⁴ 

[1] Department of Engineering and Technology, Texas A&Department of Regional Infrastructure Engineering, Kangwon National University, Chuncheon, Gangwon 24341, Korea;M University-Commerce, Commerce, TX 75429, USA;North Gyeonggi Branch, Joongbu Division, Korea Conformity Laboratories, Pocheon, Gyeonggi 11184, Korea;

关键词: three-dimensional additive construction;    SBR latex;    SBR-modified cementitious mixtures;    fresh properties;    SBR/cement ratio;   

DOI  :  10.3390/polym11081321

来源: DOAJ

【 摘 要 】

The primary purpose of this study was to investigate the feasibility of applying polymeric cementitious materials to three-dimensional additive construction (3DAC). Specifically, styrene−butadiene rubber (SBR) latex was employed as an admixture to produce SBR-modified cementitious mixtures, and their fresh properties were experimentally investigated to determine the feasibility of their use in the 3DAC process. The SBR/cement ratio was controlled based on four main materials (i.e., cement, sand, silica fume, and fly ash) in order to determine the optimal fresh properties. The test results revealed that the SBR-modified cementitious mixtures showed excellent flowability, extrudability, buildability, and open time, all of which are required for 3DAC materials. The optimal flow of the SBR-modified cementitious mixtures was 70% ± 1%, which is appropriate for 3DAC applications. According to the experiment results, the SBR-modified cementitious mixtures were sufficiently competitive to serve as a new class of materials for 3D additive construction.

【 授权许可】

Unknown