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Table 1 NMR parameters applied in the test.

From: Study on Deterioration Characteristics and Fracturing Mechanism of Concrete Under Liquid Nitrogen Cold Shock

Parameters

Value

SEQ

CPMG

SF/MHz

20

O1/Hz

732,970.31

P1/us

5

TD

500,004

PRG

1

TW/ms

3000

P2/us

12

TE/ms

0.1

NECH

15,000

SW/KHz

333.333

RFD/ms

0.020

RG1(db)

20.0

DRG1

2

NS

16