کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1456279 1509756 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrogen cluster/network in tobermorite as studied by multiple-quantum spin counting 1H NMR
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Hydrogen cluster/network in tobermorite as studied by multiple-quantum spin counting 1H NMR
چکیده انگلیسی

Proton multiple-quantum (MQ) spin-counting experiment has been employed to study arrangement of hydrogen atoms in 9 Å/11 Å natural/synthetic tobermorites. Even though all tobermorite samples give similar characterless, broad static-powder 1H NMR spectra, their MQ spin-counting spectra are markedly different; higher quanta in 11 Å tobermorite do not grow with the MQ excitation time, while those in 9 Å one do. A statistical analysis of the MQ results recently proposed [26] is applied to show that hydrogens align in 9 Å tobermorite one dimensionally, while in 11 Å tobermorite they exist as a cluster of 5–8 hydrogen atoms.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 66, December 2014, Pages 115–120
نویسندگان
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