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Volumn 1, Issue 10, 2009, Pages 2154-2162

Hindered water motions in hardened cement pastes investigated over broad time and length scales

Author keywords

cement paste; magnetic relaxation; neutron scattering; pore structure; water diffusion; water dynamics

Indexed keywords

BACKSCATTERING SPECTROMETERS; BULK WATER; CAPILLARY WATER; CEMENT PASTE; CONFINED WATER; DIFFUSION CONSTANT; ELASTIC SIGNALS; GEL PORES; HARDENED CEMENT PASTE; HIGH RESOLUTION; HYDRATED CEMENT PASTES; LENGTH SCALE; LOCAL ENVIRONMENTS; LOCAL NETWORKS; NEUTRON BACKSCATTERING; NEUTRON SPIN-ECHO SPECTROSCOPY; ROTATIONAL MOTION; SUPERCOOLED WATER; TEMPERATURE SCANS; TIME-OF-FLIGHT SPECTROMETER; TIME-SCALES; WATER DIFFUSION; WATER DYNAMICS; WATER MOBILITY; WATER MOLECULE; WATER MOTION;

EID: 78449262846     PISSN: 19448244     EISSN: 19448252     Source Type: Journal    
DOI: 10.1021/am900332n     Document Type: Article
Times cited : (17)

References (52)
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  • 17
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    • note
    • Although we did think long and hard about using demineralized or distilled water, we could see no benefits because the pore water in the paste will incorporate any soluble impurity that can be dissolved from the cement. For example, in low alkali cements, it is expected that a 0.2 M potassium ion will be found (pH ∼ 13), while with high alkali cements, the potassium ion is expected to be greater that 0.5 M (pH > 13.5), as is the case with calcium sulfate ions. Thus, pure water becomes quickly contaminated as ions dissolve from the cement during the "induction period of mixing". Hence, it was decided to use standard conditions for these experiments and always use Sydney Tap water as the mixing water.
  • 19
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    • note
    • 2-free atmosphere with a RH of about 50%; thus, the same procedure was followed here.
  • 20
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    • http://www.jcns.info/jcns-spheres.
  • 32
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    • The deviation of β from unity would indicate that the dynamics observed has a wide distribution of relaxation times
    • The deviation of β from unity would indicate that the dynamics observed has a wide distribution of relaxation times.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.