TY - JOUR
T1 - Utilization of antimony tailings in fiber-reinforced 3D printed concrete
T2 - A sustainable approach for construction materials
AU - Singh, Amardeep
AU - Wang, Yufei
AU - Zhou, Yiyi
AU - Sun, Junbo
AU - Xu, Xinglong
AU - Li, Yutong
AU - Liu, Zhonghe
AU - Chen, Jing
AU - Wang, Xiangyu
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/12/8
Y1 - 2023/12/8
N2 - 3D printed concrete (3DPC) is an innovative solution offering faster construction, reduced waste, and greater design flexibility. Antimony tailings (AT) enhance the material's durability and strength while promoting sustainability by reducing waste. This provides a cost-effective and eco-friendly solution for construction. Based on it, this research tries to verify the viability of a 3D printing concrete with up to 100 % AT by assessing its fluidity, extrudability, buildability, and strength. This study used five different replacement percentages (0 %, 25 %, 50 %, 75 % and 100 %) of AT to partially replace the silica sand in the mix. Additionally, 1 % of the polyvinyl alcohol (PVA) fibers were used to improve the flexural capacity of the mixes because of the non-availability of the reinforcement in the 3DPC. Results showed that addition produced the highest compressive and flexural strength at 75 %AT. There was a smaller reduction in the compressive and flexural strength at 75 %AT anisotropically. The highest porosity was observed in the 100 %AT mix due to higher water absorption than control. This shows that the mix with 75 %AT can not only meet the printability requirements but can provide better strength which is beneficial for the practical application of 3D concrete printing.
AB - 3D printed concrete (3DPC) is an innovative solution offering faster construction, reduced waste, and greater design flexibility. Antimony tailings (AT) enhance the material's durability and strength while promoting sustainability by reducing waste. This provides a cost-effective and eco-friendly solution for construction. Based on it, this research tries to verify the viability of a 3D printing concrete with up to 100 % AT by assessing its fluidity, extrudability, buildability, and strength. This study used five different replacement percentages (0 %, 25 %, 50 %, 75 % and 100 %) of AT to partially replace the silica sand in the mix. Additionally, 1 % of the polyvinyl alcohol (PVA) fibers were used to improve the flexural capacity of the mixes because of the non-availability of the reinforcement in the 3DPC. Results showed that addition produced the highest compressive and flexural strength at 75 %AT. There was a smaller reduction in the compressive and flexural strength at 75 %AT anisotropically. The highest porosity was observed in the 100 %AT mix due to higher water absorption than control. This shows that the mix with 75 %AT can not only meet the printability requirements but can provide better strength which is beneficial for the practical application of 3D concrete printing.
KW - 3D printed
KW - Anisotropy
KW - Antimony tailing
KW - Cementitious composite
KW - Silica sand
KW - X-CT
UR - http://www.scopus.com/inward/record.url?scp=85174935848&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2023.133689
DO - 10.1016/j.conbuildmat.2023.133689
M3 - Article
AN - SCOPUS:85174935848
SN - 0950-0618
VL - 408
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 133689
ER -