Interlayer bonding investigation of 3D printing cementitious materials with fluidity-retaining polycarboxylate superplasticizer and high-dispersion polycarboxylate superplasticizer
نویسندگان
چکیده
Proposed special requirements exist for the rheological properties and time varying characteristics of 3D printing cementitious materials (3DPC). In this study, high dispersion polycarboxylate superplasticizer (HD PC) fluidity retaining (FR were used to control behaviors 3DPC. The correlation interval, interlayer bonding strength investigated. results indicated that FR PC improved retention ability thixotropy fresh pastes. thixotropic hysteresis loop area reflocculation rate (Rthix) 101.9% 80.4% higher than those HD PC, respectively. Furthermore, polymer has a positive effect on may reduce negative caused by extending interval. During interval 20 s 30 min, with decreases 14.1%, while 50.0%.
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ژورنال
عنوان ژورنال: Construction and Building Materials
سال: 2022
ISSN: ['1879-0526', '0950-0618']
DOI: https://doi.org/10.1016/j.conbuildmat.2022.127151