scholarly journals The Porosity And Pore Structure Of Hydrated Portland Cement Paste

1988 ◽  
Vol 137 ◽  
Author(s):  
R. F. Feldman
Keyword(s):  
Portland Cement ◽  
Pore Structure ◽  
Porous Materials ◽  
Surface Area ◽  
Water Vapour ◽  
Cement Paste ◽  
Mercury Porosimetry ◽  
Pore Structures ◽  
Portland Cement Paste

Pore structure and the surface area of the pores are the most important characteristics controlling the properties of porous materials. Many techniques, based largely on nitrogen or water vapour isotherms or mercury porosimetry, have been used to determine the pore structure of solids. Values obtained from these methods have been relatively reliable for materials with pore structures that remain stable on removal or addition of water.

Damage to the Pore Structure of Hardened Portland Cement Paste by Mercury Intrusion

2005 ◽  
Vol 80 (9) ◽  
pp. 2454-2458 ◽  
Author(s):  
Rudolph A. Olson ◽  
Christopher M. Neubauer ◽  
Hamlin M. Jennings
Keyword(s):  
Portland Cement ◽  
Pore Structure ◽  
Cement Paste ◽  
Mercury Intrusion ◽  
Portland Cement Paste

Impedance spectroscopy to characterize the pore structure during the hardening process of Portland cement paste

2006 ◽  
Vol 51 (8-9) ◽  
pp. 1831-1841 ◽  
Author(s):  
M. Cabeza ◽  
M. Keddam ◽  
X.R. Nóvoa ◽  
I. Sánchez ◽  
H. Takenouti
Keyword(s):  
Impedance Spectroscopy ◽  
Portland Cement ◽  
Pore Structure ◽  
Cement Paste ◽  
Hardening Process ◽  
Portland Cement Paste

Relation Between Strength, Pore Structure and Associated Properties of Slag-Containing Cementitious Materials

1984 ◽  
Vol 42 ◽  
Author(s):  
Della M. Roy ◽  
G. M. Idorn
Keyword(s):  
Blast Furnace ◽  
Portland Cement ◽  
Pore Structure ◽  
Cement Paste ◽  
Blast Furnace Slag ◽  
Cementitious Materials ◽  
Granulated Blast Furnace Slag ◽  
Pore Structures ◽  
Furnace Slag

AbstractSubstantial increases of the strength of cement paste and mortars may be obtained in conventional processing by optimizing the materials components, the rheology and the curing, and thereby improving the microstructures. Cementitious materials with high proportions of granulated blast-furnace slag have been investigated. Higher strengths of ASTM C 109 mortars were obtained with 40 to 65% substitution of portland cement by slag, than with ordinary mix compositions and processing.For one set of mixtures, 28 day strengths ≥ 100 MPa (some as high as 240 MPa) were consistently attained after curing at temperatures ranging from 27 to 250°C. The slag substitutions developed finer pore structures as revealed by intrusion porosimetry measurements, than those with pure portland cement. This is believed to be a major reason for their enhanced durability. At each stage from 3 to 28 days, increase of curing temperatures from 27 to 90°C decreased porosity and increased the strength, reflecting an increased maturity.Implications for practice and suggestions for further work are discussed.

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