Effect of Hydroxypropyl methyl cellulose (HPMC) on rheology and printability of the first printed layer of cement activated slag-based 3D printing concrete

Yin, Yunchao; Huang, Jian; Wang, Tiezhu; Yang, Rong; Hu, Hailong; Manuka, Mesfin; Zhou, Fengyang; Min, Junjie; Wan, Huilong; Yuan, Donghui; Ma, Baoguo

doi:10.1016/j.conbuildmat.2023.133347

Cited by 15 publications

(1 citation statement)

References 53 publications

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“…The utilisation of VMA can also contribute to the enhancement of extrudability by mitigating water drainage in cementitious materials [11]. Several studies have endeavoured to employ a blend of HPMC and superplasticizer to create cementitious materials that can be printed [12,13]. Nevertheless, most individuals fail to consider the possibility that the HPMC may rival superplasticizer in its ability to adhere to cement or other small particles, thereby impacting the distribution of superplasticizer.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on the effect of a Viscosity Modifying Agent on the rheological and strength behaviour of 3D Printed Concrete

Prathipati,

Vardhan,

Murali

et al. 2024

J. Phys.: Conf. Ser.

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Automatic construction technologies have become the primary focus of the global construction sector. 3D printing is one of the disruptive technologies emerging from Industrial Revolution 4.0. 3D printing has grown increasingly popular in concrete construction due to its architectural freedom, speed, formwork-free printing, lesser waste creation, eco-friendliness, affordability, and safety. There were issues with the printing process when manufacturing 3D-Printed Concrete (3DPC) mixes, such as poor extrusion and buildability issues. This study investigates the use of Viscosity Modifying Agents (VMAs) in 3DPC to improve printability as well as structural integrity. VMAs, known for their capacity to change the rheological properties of concrete mixtures, are used selectively to optimise the material’s flow behaviour throughout the 3D printing process. The study compares the effect of VMA concentrations on the workability and buildability properties of 3DPC mixtures. Comparative examinations of VMA-enhanced and traditional 3DPC specimens indicate that an optimised VMA dose improves structural performance. The findings of this study hold significant relevance for the advancement of 3D printing technology in construction, offering a more nuanced understanding of the role of VMAs in optimising concrete mixtures for additive manufacturing.

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Section: Introductionmentioning

confidence: 99%