Effect of Structural Build-Up on Interlayer Bond Strength of 3D Printed Cement Mortars.

ABSTRACT: Understanding the relationship between the intrinsic characteristics of materials (such as rheological properties and structural build-up) and printability and controlling intrinsic characteristics of materials through additives to achieve excellent printability is vital in digital concrete additive manufacturing. This paper aims at studying the effects of material's structural build-up on the interlayer bond strength of 3DPC with different time gaps. Structural build-up can indirectly affect the interlayer bond strength by affecting the surface moisture of concrete. Based on the structural build-up of 3DPC, a new parameter, maximum operational time (MOT), is proposed, which can be considered as the limit of time gap to ensure high interlayer bond strength. Slump-retaining polycarboxylate

SUBMITTER: Pan T 

PROVIDER: S-EPMC7824854 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature