JPS56649A - Measuring method for hardening degree of concrete - Google Patents
Measuring method for hardening degree of concreteInfo
- Publication number
- JPS56649A JPS56649A JP7605279A JP7605279A JPS56649A JP S56649 A JPS56649 A JP S56649A JP 7605279 A JP7605279 A JP 7605279A JP 7605279 A JP7605279 A JP 7605279A JP S56649 A JPS56649 A JP S56649A
- Authority
- JP
- Japan
- Prior art keywords
- barrel
- trigger
- shaped part
- elastic wave
- concrete
- 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.)
- Pending
Links
Abstract
PURPOSE: To measure a hardening degree, by giving impulse to a concrete material to generate an elastic wave and by measuring the frequency of air vibration dependent upon this elastic wave.
CONSTITUTION: Measuring unit main body 1 is put on mold frame material B used both as the surface finishing material or the finishing underground material of driven-in concrete material A. Measuring unit 1 is provided with barrel-shaped part 2, grasp part 3. trigger 4, and so on and can be carried with one hand. Barrel- shaped part 2 is energized slid forward by compression spring 5, and striking bar 6 having stopping part 6b which is stopped to a part of trigger 4 by pulling back handle 6a of the rear end part against compression spring 5 is inserted into barrel- shaped part 2. Bowl-shaped material 7 is mounted on the tip of barrel-shaped part 2 and is caused to adhere closely to mold frame material B. Trigger 4 is pulled to cause striking bar 6 to strike the outside face of moled frame material B, and an elastic wave accompained with intrinsic vibration of concrete material A is generated, and the output signal of sensor 8 is amplified in 9 and is compared with data stored previously by frequency analyzer 10.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7605279A JPS56649A (en) | 1979-06-16 | 1979-06-16 | Measuring method for hardening degree of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7605279A JPS56649A (en) | 1979-06-16 | 1979-06-16 | Measuring method for hardening degree of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56649A true JPS56649A (en) | 1981-01-07 |
Family
ID=13594005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7605279A Pending JPS56649A (en) | 1979-06-16 | 1979-06-16 | Measuring method for hardening degree of concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56649A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60211361A (en) * | 1984-04-06 | 1985-10-23 | Kajima Corp | Striking device of peeling detector for wall surface tile or the like |
| JP2008046113A (en) * | 2006-07-21 | 2008-02-28 | Sekisui Chem Co Ltd | Inspection method of inspecting curing state of fiber reinforced plastic material lining buried pipe |
| JP2012172997A (en) * | 2011-02-17 | 2012-09-10 | Nippon Telegr & Teleph Corp <Ntt> | Agitation apparatus for concrete pole |
| CN106018137A (en) * | 2016-06-21 | 2016-10-12 | 福建省建筑科学研究院 | Juvenile-phase concrete strength test instrument |
-
1979
- 1979-06-16 JP JP7605279A patent/JPS56649A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60211361A (en) * | 1984-04-06 | 1985-10-23 | Kajima Corp | Striking device of peeling detector for wall surface tile or the like |
| JPH0254904B2 (en) * | 1984-04-06 | 1990-11-22 | Kajima Corp | |
| JP2008046113A (en) * | 2006-07-21 | 2008-02-28 | Sekisui Chem Co Ltd | Inspection method of inspecting curing state of fiber reinforced plastic material lining buried pipe |
| JP2012172997A (en) * | 2011-02-17 | 2012-09-10 | Nippon Telegr & Teleph Corp <Ntt> | Agitation apparatus for concrete pole |
| CN106018137A (en) * | 2016-06-21 | 2016-10-12 | 福建省建筑科学研究院 | Juvenile-phase concrete strength test instrument |
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