JPS56652A - Investigating method and unit for hollow part in concrete - Google Patents

Investigating method and unit for hollow part in concrete

Info

Publication number
JPS56652A
JPS56652A JP7605379A JP7605379A JPS56652A JP S56652 A JPS56652 A JP S56652A JP 7605379 A JP7605379 A JP 7605379A JP 7605379 A JP7605379 A JP 7605379A JP S56652 A JPS56652 A JP S56652A
Authority
JP
Japan
Prior art keywords
concrete
vibration
mold frame
bowl
outside face
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP7605379A
Other languages
Japanese (ja)
Other versions
JPS5942828B2 (en
Inventor
Takayuki Fukushima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haseko Corp
Original Assignee
Hasegawa Komuten Co Ltd
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 Hasegawa Komuten Co Ltd filed Critical Hasegawa Komuten Co Ltd
Priority to JP54076053A priority Critical patent/JPS5942828B2/en
Publication of JPS56652A publication Critical patent/JPS56652A/en
Publication of JPS5942828B2 publication Critical patent/JPS5942828B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE: To make it possible to confirm whether hollow parts exist in concrete or not from the mold frame external to obtain a sure concrete material, by giving an elastic wave accompanied with intrinsic vibration of concrete to the mold frame outside face and by measuring the vibration frequency of air dependent upon this elastic wave.
CONSTITUTION: Bowl-shaped material 7 of elastic materials such as rubber having a vibration preventing effect and a sound shielding effect is mounted on the tip of barrel-shaped part 2 of investigating unit main body 1, and this bowl-shaped material 7 is caused to adheve closely to the outside face of concrete surface finishing material mold frame B, and by pulling trigger 4, a slight impulse is given to the outside face of mold frame B, which faces internal space S of bowl-shaped material 7, by the tip of striking bar 6, and an elastic wave accompanied with intrinsic vibration of concrete A is generated by this impulse. This air vibration is sensed by sensor 8, and the output is amplified in 9 and is analyzed by comparison between itself and data, which is stored previously, in frequency analyzer 10, thereby indicating the charging degree. As a result, existence of hollow parts in concrete can be confirmed, and a sure concrete material can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP54076053A 1979-06-16 1979-06-16 Cavity exploration device in concrete Expired JPS5942828B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54076053A JPS5942828B2 (en) 1979-06-16 1979-06-16 Cavity exploration device in concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54076053A JPS5942828B2 (en) 1979-06-16 1979-06-16 Cavity exploration device in concrete

Publications (2)

Publication Number Publication Date
JPS56652A true JPS56652A (en) 1981-01-07
JPS5942828B2 JPS5942828B2 (en) 1984-10-17

Family

ID=13594030

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54076053A Expired JPS5942828B2 (en) 1979-06-16 1979-06-16 Cavity exploration device in concrete

Country Status (1)

Country Link
JP (1) JPS5942828B2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883258A (en) * 1981-11-13 1983-05-19 Hitachi Zosen Hihakai Kensa Kk Detection for condition of rear surface of concrete wall
JPS6086983U (en) * 1983-11-21 1985-06-14 日立造船非破壊検査株式会社 Concrete wall back situation detection device
JPS60212569A (en) * 1984-04-06 1985-10-24 鹿島建設株式会社 Impact apparatus of delamination detector of wall surface tile
JPS61169761A (en) * 1985-01-22 1986-07-31 Taisei Corp void probe
JPS6232362U (en) * 1985-08-13 1987-02-26
JPS63177753U (en) * 1987-05-08 1988-11-17
JPH1164305A (en) * 1997-08-27 1999-03-05 Taisei Corp Vibration / vibration receiving device for concrete wall back surface inspection
JP2016080381A (en) * 2014-10-10 2016-05-16 古河機械金属株式会社 Sound inspection device
JP2017161489A (en) * 2016-03-02 2017-09-14 古河機械金属株式会社 Inspection device
CN111551640A (en) * 2019-02-11 2020-08-18 程彦 Ceramic floor tile paving and pasting hollowing detection device based on vibration frequency

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883258A (en) * 1981-11-13 1983-05-19 Hitachi Zosen Hihakai Kensa Kk Detection for condition of rear surface of concrete wall
JPS6086983U (en) * 1983-11-21 1985-06-14 日立造船非破壊検査株式会社 Concrete wall back situation detection device
JPS60212569A (en) * 1984-04-06 1985-10-24 鹿島建設株式会社 Impact apparatus of delamination detector of wall surface tile
JPS61169761A (en) * 1985-01-22 1986-07-31 Taisei Corp void probe
JPS6232362U (en) * 1985-08-13 1987-02-26
JPS63177753U (en) * 1987-05-08 1988-11-17
JPH1164305A (en) * 1997-08-27 1999-03-05 Taisei Corp Vibration / vibration receiving device for concrete wall back surface inspection
JP2016080381A (en) * 2014-10-10 2016-05-16 古河機械金属株式会社 Sound inspection device
JP2017161489A (en) * 2016-03-02 2017-09-14 古河機械金属株式会社 Inspection device
CN111551640A (en) * 2019-02-11 2020-08-18 程彦 Ceramic floor tile paving and pasting hollowing detection device based on vibration frequency

Also Published As

Publication number Publication date
JPS5942828B2 (en) 1984-10-17

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