SU611015A1 - Method of testing concrete pipe mine roof support - Google Patents

Method of testing concrete pipe mine roof support

Info

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
Application number
SU742002642A
Other languages
Russian (ru)
Inventor
Геннадий Исаакович Вальштейн
Владимир Петрович Бродский
Иван Савельевич Чиж
Original Assignee
Центральная Строительная Лаборатория Треста Карагандауглестрой
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Центральная Строительная Лаборатория Треста Карагандауглестрой filed Critical Центральная Строительная Лаборатория Треста Карагандауглестрой
Priority to SU742002642A priority Critical patent/SU611015A1/en
Application granted granted Critical
Publication of SU611015A1 publication Critical patent/SU611015A1/en

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.

SU742002642A 1974-03-04 1974-03-04 Method of testing concrete pipe mine roof support SU611015A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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