SU611015A1 - Method of testing concrete pipe mine roof support - Google Patents
Method of testing concrete pipe mine roof supportInfo
- Publication number
- SU611015A1 SU611015A1 SU742002642A SU2002642A SU611015A1 SU 611015 A1 SU611015 A1 SU 611015A1 SU 742002642 A SU742002642 A SU 742002642A SU 2002642 A SU2002642 A SU 2002642A SU 611015 A1 SU611015 A1 SU 611015A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- concrete pipe
- roof support
- mine roof
- testing concrete
- pipe mine
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
3 от скорости, о т . „ ч а ю ш и iiс . тем, что. с целью повышени точное ти измерени , ультразвук пропускают раодельно через сердечник кропи и оболочку, а о прочности крепи суд т но разнице скор .х:тей ультразвука. Источники информации, прин тые во внимание при экспортизе: 61 5 4 i. Зашук И. В. Электроника и акустцч-окие методы испытаний стройматериалов, М.. Высша школа , 1968, с. 59-73. рис. 15-18. 2. Плаумер А. Э. Основы и практика ультразвуковых испытаний бетона. М., Госстройиздат, 1962.3 on speed, about t. „H and s and iic. by that. In order to increase the accuracy of these measurements, ultrasound is passed through separately through the core and the sheath, and the strength of the support is judged by the difference in the speed of x: ultrasound. Sources of information taken into account at export: 61 5 4 i. Zashuk I.V. Electronics and Acoustical Test Methods for Building Materials, M .. Higher School, 1968, p. 59-73. rice 15-18. 2. Plaumer A.E. Fundamentals and practice of ultrasonic testing of concrete. M., Gosstroyizdat, 1962.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742002642A SU611015A1 (en) | 1974-03-04 | 1974-03-04 | Method of testing concrete pipe mine roof support |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU742002642A SU611015A1 (en) | 1974-03-04 | 1974-03-04 | Method of testing concrete pipe mine roof support |
Publications (1)
Publication Number | Publication Date |
---|---|
SU611015A1 true SU611015A1 (en) | 1978-06-15 |
Family
ID=20577796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU742002642A SU611015A1 (en) | 1974-03-04 | 1974-03-04 | Method of testing concrete pipe mine roof support |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU611015A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669310A (en) * | 1986-03-26 | 1987-06-02 | The Babcock & Wilcox Company | High frequency ultrasonic technique for measuring oxide scale on the inner surface of boiler tubes |
-
1974
- 1974-03-04 SU SU742002642A patent/SU611015A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669310A (en) * | 1986-03-26 | 1987-06-02 | The Babcock & Wilcox Company | High frequency ultrasonic technique for measuring oxide scale on the inner surface of boiler tubes |
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