CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Influence of drying conditions on the contact-hardening behaviours of calcium silicate hydrate powder

Shuping Wang (Institutionen för bygg- och miljöteknik, Byggnadsteknologi) ; Xiaoqin Peng ; Zhilong Tao ; Luping Tang (Institutionen för bygg- och miljöteknik, Byggnadsteknologi) ; Zeng Lu
Construction and Building Materials (0950-0618). Vol. 136 (2017), p. 465-473.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Drying conditions, Calcium silicate hydrate, Contact-hardening, Microstructure, Moisture content, Particle-particle bonding



Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2017-02-28. Senast ändrad 2017-05-05.
CPL Pubid: 248313

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Byggnadsteknologi (2005-2017)

Ämnesområden

Building Futures
Materialvetenskap
Samhällsbyggnadsteknik
Materialteknik

Chalmers infrastruktur