Influence of drying conditions on the contact-hardening behaviours of calcium silicate hydrate powder
Source abstract
Abstract
Contact-hardening is a new type of binding property for amorphous calcium silicate hydrate (C-S-H) with which a hardened specimen can be prepared in a few minutes by compressing C-S-H powders directly. However, the relation between contact-hardening behaviours and the drying conditions of powders is still poorly understood. In this study, the influence of air-drying and oven-drying on the physical properties and microstructure of hydrothermally synthesised C-S-H powders were investigated. The results provide further insight into the contact-hardening behaviours of these powders by measuring the bulk density, mechanical strength and water-resistant properties of the compacts. Factors affecting particleparticle contact and hardening of C-S-H powders are discussed in parallel with the mechanical properties and microstructure of the compacts. The result highlights that the moisture content, which is highly related to the drying conditions, is essential to contact hardening of C-S-H.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete and Cement Materials Research · Advanced ceramic materials synthesis · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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