JPS5555257A - Method of measuring constraint expansion coefficient in swelling cement - Google Patents

Method of measuring constraint expansion coefficient in swelling cement

Info

Publication number
JPS5555257A
JPS5555257A JP12890378A JP12890378A JPS5555257A JP S5555257 A JPS5555257 A JP S5555257A JP 12890378 A JP12890378 A JP 12890378A JP 12890378 A JP12890378 A JP 12890378A JP S5555257 A JPS5555257 A JP S5555257A
Authority
JP
Japan
Prior art keywords
force
constraint
pressurizing
specimen
swelling
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
JP12890378A
Other languages
Japanese (ja)
Other versions
JPS6136183B2 (en
Inventor
Yukinori Yamazaki
Saburo Kobayashi
Hideto Kamiaka
Kozo Sugiura
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.)
Nihon Cement Co Ltd
Original Assignee
Nihon Cement 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 Nihon Cement Co Ltd filed Critical Nihon Cement Co Ltd
Priority to JP12890378A priority Critical patent/JPS5555257A/en
Publication of JPS5555257A publication Critical patent/JPS5555257A/en
Publication of JPS6136183B2 publication Critical patent/JPS6136183B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

PURPOSE: To measure constraint expansion coefficient highly reliably, by adding external force corresponding to the internal stress of a constraint reinforcing rod accompained by the swelling of swelling cement to a specimen.
CONSTITUTION: The quantity of displacement Δl accompained by the swelling of a specimen is measured at a swelling displacement quantity measuring portion 5, constraint force Po is operated 6 on the basis of the value and the constraint force Po and pressurizing force Pr to the specimen detected at a pressurizing force measuring unit 7 are compared 8. Comparison signals are transmitted to a pressurizing force controller 9, and a pressurizing motor 10 is controlled so that Po=Pr be formed. Thus, pressurizing force applied to the specimen is continually controlled in the constraint force Po in the case when using a constraint reinforcing rod. When measuring, the specimen 14 is placed on a pressurizing base 11 and pressurized by means of a pressure plate 17, the first pressurizing force is detected by means of a load cell 15, and the quantity of displacement Δl accompanied by the lapse of time is detected by means of a displacement meter 23 while the cell 15 detects the pressurizing force Pr. Po=Pr is obtained by automatically controlling a pulse motor 12.
COPYRIGHT: (C)1980,JPO&Japio
JP12890378A 1978-10-19 1978-10-19 Method of measuring constraint expansion coefficient in swelling cement Granted JPS5555257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12890378A JPS5555257A (en) 1978-10-19 1978-10-19 Method of measuring constraint expansion coefficient in swelling cement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12890378A JPS5555257A (en) 1978-10-19 1978-10-19 Method of measuring constraint expansion coefficient in swelling cement

Publications (2)

Publication Number Publication Date
JPS5555257A true JPS5555257A (en) 1980-04-23
JPS6136183B2 JPS6136183B2 (en) 1986-08-16

Family

ID=14996199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12890378A Granted JPS5555257A (en) 1978-10-19 1978-10-19 Method of measuring constraint expansion coefficient in swelling cement

Country Status (1)

Country Link
JP (1) JPS5555257A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006250820A (en) * 2005-03-11 2006-09-21 Totaku Industries Inc Test tube for measuring breathing amount
JP2013033002A (en) * 2011-08-03 2013-02-14 Fujita Corp Water immersion expansion test method and water immersion expansion test device of expansive material and banking construction method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109425729B (en) * 2017-12-21 2021-03-12 中国水利水电科学研究院 Multi-machine joint control concrete variable constraint equipment and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006250820A (en) * 2005-03-11 2006-09-21 Totaku Industries Inc Test tube for measuring breathing amount
JP2013033002A (en) * 2011-08-03 2013-02-14 Fujita Corp Water immersion expansion test method and water immersion expansion test device of expansive material and banking construction method

Also Published As

Publication number Publication date
JPS6136183B2 (en) 1986-08-16

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