Construction of virtual interfacial transition zone (ITZ) samples of hydrated cement paste using extended stochastic optimization

2019 ◽  
Vol 102 ◽  
pp. 84-93 ◽  
Author(s):  
Se-Yun Kim ◽  
Ji-Su Kim ◽  
Jun Won Kang ◽  
Tong-Seok Han
Keyword(s):  
Stochastic Optimization ◽  
Transition Zone ◽  
Cement Paste ◽  
Interfacial Transition Zone ◽  
Hydrated Cement ◽  
Hydrated Cement Paste

scholarly journals Interactions between hydrated cement paste and organic acids: Thermodynamic data and speciation modeling

2015 ◽  
Vol 69 ◽  
pp. 25-36 ◽  
Author(s):  
Laurent De Windt ◽  
Alexandra Bertron ◽  
Steeves Larreur-Cayol ◽  
Gilles Escadeillas
Keyword(s):  
Organic Acids ◽  
Cement Paste ◽  
Thermodynamic Data ◽  
Hydrated Cement ◽  
Hydrated Cement Paste

scholarly journals Effect of water/cement ratio on micro-nanomechanical properties of the interface between cementitious matrix and steel microfibers in ultra-high performance cementitious composites

2021 ◽  
Vol 14 (4) ◽  
Author(s):  
Vanessa Fernandes Cesari ◽  
Fernando Pelisser ◽  
Philippe Jean Paul Gleize ◽  
Milton Domingos Michel
Keyword(s):  
Transition Zone ◽  
Cement Paste ◽  
Calcium Silicate ◽  
High Performance ◽  
Calcium Silicate Hydrate ◽  
Interfacial Transition Zone ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Nanomechanical Properties ◽  
Cementitious Matrix

abstract: Ultra-high performance concretes with steel microfibers have been studied in depth with the aim of producing more efficient and durable structures. The performance of these materials depends on the characteristics of the interface between microfibers and cementitious matrix. This research investigates the micro-nanomechanical properties of the interfacial transition zone between the steel microfibers and the matrix of ultra-high performance cementitious composite. The effect of the water/cement ratio and distance from the microfiber were analyzed. The results confirm the formation of high-density calcium-silicate-hydrate (HD C-S-H) matrix at higher concentrations than low-density calcium-silicate-hydrate (LD C-S-H) for w/c ratios of 0.2 and 0.3. The properties in cementitious matrix interface with steel microfibers were very similar to that measured for the cement paste, and no significant difference was observed regarding the distance to the microfibers in relation to the elastic modulus, hardness and chemical composition. Thus, the authors can conclude that the formation of a less resistant region does not occur at the interfacial transition zone cement paste/microfibers.

Experimental Study of Diffusivity of the Interfacial Transition Zone between Cement Paste and Aggregate

2016 ◽  
Vol 28 (10) ◽  
pp. 04016109 ◽  
Author(s):  
Zhilu Jiang ◽  
Qinghua Huang ◽  
Yunping Xi ◽  
Xianglin Gu ◽  
Weiping Zhang
Keyword(s):  
Experimental Study ◽  
Transition Zone ◽  
Cement Paste ◽  
Interfacial Transition Zone
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