Rheo-viscoelastic behavior and viscosity prediction of calcium sulphoaluminate modified Portland cement pastes

2021 ◽  
Author(s):  
Y.M. Peng ◽  
C. Unluer ◽  
J.Y. Shi ◽  
G.C. Long
Keyword(s):  
Portland Cement ◽  
Viscoelastic Behavior ◽  
Cement Pastes ◽  
Calcium Sulphoaluminate ◽  
Viscosity Prediction

scholarly journals Thermal Properties of Calcium Sulphoaluminate Cement as an Alternative to Ordinary Portland Cement

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7011
Author(s):  
Małgorzata Gołaszewska ◽  
Barbara Klemczak ◽  
Jacek Gołaszewski
Keyword(s):  
Activation Energy ◽  
Portland Cement ◽  
Apparent Activation Energy ◽  
Thermal Behaviour ◽  
Ordinary Portland Cement ◽  
Isothermal Calorimetry ◽  
Heat Of Hydration ◽  
Curing Temperature ◽  
Cement Pastes ◽  
Calcium Sulphoaluminate

This paper presents the results of research into the heat of hydration and activation energy of calcium sulphoaluminate (CSA) cement in terms of the dependence on curing temperature and water/cement ratio. Cement pastes with water/cement ratios in the range of 0.3–0.6 were tested by isothermal calorimetry at 20 °C, 35 °C and 50 °C, with the evolved hydration heat and its rate monitored for 168 h from mixing water with cement. Reference pastes with ordinary Portland cement (OPC) were also tested in the same range. The apparent activation energy of CSA and OPC was determined based on the results of the measurements. CSA pastes exhibited complex thermal behaviour that differed significantly from the thermal behaviour of ordinary Portland cement. The results show that both the w/c ratio and elevated temperature have a meaningful effect on the heat emission and the hydration process of CSA cement pastes. The determined apparent activation energy of CSA revealed its substantial variability and dependence, both on the w/c ratio and the curing temperature.

Hardened portland cement pastes of low porosity

1973 ◽  
Vol 3 (3) ◽  
pp. 279-293 ◽  
Author(s):  
Stephen Brunauer ◽  
Jan Skalny ◽  
Ivan Odler ◽  
Marvin Yudenfreund
Keyword(s):  
Portland Cement ◽  
Cement Pastes ◽  
Low Porosity

Effect of microcrystalline cellulose on geopolymer and Portland cement pastes mechanical performance

2021 ◽  
Vol 288 ◽  
pp. 123053
Author(s):  
Saulo Rocha Ferreira ◽  
Neven Ukrainczyk ◽  
Keoma Defáveri do Carmo e Silva ◽  
Luiz Eduardo Silva ◽  
Eduardo Koenders
Keyword(s):  
Portland Cement ◽  
Microcrystalline Cellulose ◽  
Mechanical Performance ◽  
Cement Pastes

Electrochemical behavior of Portland cement pastes containing phosphonates

1995 ◽  
Vol 2 (5) ◽  
pp. 182-188 ◽  
Author(s):  
P. Gu ◽  
V.S. Ramachandran ◽  
J.J. Beaudoin ◽  
E. Quinn
Keyword(s):  
Portland Cement ◽  
Electrochemical Behavior ◽  
Cement Pastes

Early carbonation curing effects on the microstructure of high initial strength Portland cement pastes

2019 ◽  
Vol 31 (8) ◽  
pp. 382-388 ◽  
Author(s):  
Alex Neves Junior ◽  
Romildo Dias Toledo Filho ◽  
Jo Dweck ◽  
Frank K. Cartledged ◽  
Eduardo de Moraes Rego Fairbairn
Keyword(s):  
Portland Cement ◽  
Cement Pastes ◽  
Initial Strength ◽  
Carbonation Curing

Portland Cement Pastes with 3-Aminopropyltriethoxysilane Functionalized Nanosilica: Scientific, Hydration and Microstructural Aspects

2021 ◽  
Author(s):  
Julliana Simas Vasconcellos ◽  
Yuri Sotero Bomfim Fraga ◽  
João Henrique da Silva Rêgo ◽  
Patrícia Pommé Confessori Sartoratto ◽  
Moisés Frías Rojas
Keyword(s):  
Portland Cement ◽  
Cement Pastes

Influence of Polyepoxysuccinic Acid on Solid Phase Products in Portland Cement Pastes

2018 ◽  
Vol 33 (5) ◽  
pp. 1140-1149 ◽  
Author(s):  
Chenguang Hu ◽  
Xiaoyan Wang ◽  
Ruiying Bai ◽  
Gang Liu ◽  
Xiaoxin Feng ◽  
...  
Keyword(s):  
Portland Cement ◽  
Solid Phase ◽  
Cement Pastes

scholarly journals Rheological Behavior of Fresh Cement Pastes

Fluids ◽  
2018 ◽  
Vol 3 (4) ◽  
pp. 106 ◽  
Author(s):  
Francisco-José Rubio-Hernández
Keyword(s):  
Rheological Behavior ◽  
Flow Behavior ◽  
Viscoelastic Behavior ◽  
Alternative Methods ◽  
Chemical Additives ◽  
Research Activity ◽  
Cement Pastes ◽  
Blended Cements ◽  
Flow Models ◽  
Mineral Additions

Rheology of a concrete is mainly controlled by the rheological behavior of its cement paste. This is the main practical reason for the extensive research activity observed during 70 years in this research subfield. In this brief review, some areas of the research on the rheological behavior of fresh cement pastes (mixture method influence, microstructure analysis, mineral additions influence, chemical additives influence, blended cements behavior, viscoelastic behavior, flow models, and flow behavior analysis with alternative methods) are examined.

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