CS206148B1 - Device for detecting the capacity changes of material - Google Patents
Device for detecting the capacity changes of material Download PDFInfo
- Publication number
- CS206148B1 CS206148B1 CS630679A CS630679A CS206148B1 CS 206148 B1 CS206148 B1 CS 206148B1 CS 630679 A CS630679 A CS 630679A CS 630679 A CS630679 A CS 630679A CS 206148 B1 CS206148 B1 CS 206148B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- sample
- detecting
- materials
- jaws
- sensor
- Prior art date
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
Vynález sa týká zariadenia na zistovanie objemových zmien Strukturálně vázkých materiálov, hlavně cementových kaší, mált a betónov v počiatočnom Stádiu tuhnutia a tvrdnutia. Změny objemu v uvedenom Stádiu majú rozhodujúci vplyv na fvzikálno-mechanické vlastnosti týchto materiálov v zatvrdnutom stave.The invention relates to a device for detecting the volume changes of structurally bonded materials, in particular cementitious slurries, mortars and concretes at an early stage of solidification and hardening. Volume changes at the said stage have a decisive influence on the physical-mechanical properties of these materials in the hardened state.
Metod na zistovanie objemových zmien uvedených materiálov v počiatočnom Stádiu tuhnutia a tvrdnutia je málo. Ako příklad možno uviesť meranie pomocou pružného vaku ponořeného do kvapaliny, pri ktorom sa objemové změny vzorky určujú podlá změny výšky hladiny okolitej kvapaliny, alebo merania pomocou pevných foriem, kde objemové změny vzorky sledujú sondy zaliate vo vyšetrovanej vzorke. Nevýhodou týchto zariadení však je, že buď neumožňujú automatizované merania, ako napr. u pružného vaku, alebo v případe merania v pevnej formě je přesnost merania skreslená třením o steny formy a prenosom na sondy a navýše v takejto formě nemožno merať materiály s napučiavacou tendenciou.There are few methods for detecting the volume changes of said materials at an early stage of solidification and hardening. By way of example, the measurement can be carried out by means of a flexible bag immersed in a liquid, in which the sample volume changes are determined by changes in the level of the surrounding liquid, or solid form measurements, where the sample volume changes follow probes embedded in the sample. The disadvantage of these devices, however, is that they either do not allow automated measurements, such as e.g. in the case of a flexible bag, or in the case of solid form measurements, the measurement accuracy is distorted by friction on the mold walls and transfer to the probes, and moreover, materials with swelling tendency cannot be measured in such a mold.
Uvedené nedostatky sa odstránia zariadením na zistovanie objemových zmien materiálov, ktoré pozostáva zo základovej došky, bočných stien, čiel a uchycovacích čelustí snímačov a ktorého podstata spočívá podlá vynálezu v tom, že bočné steny sú pri meraní uvolnitelné a uchycovacle čeluste snímačov nastavitelné.These drawbacks are overcome by an apparatus for detecting volume variations of materials, which consists of a base, side walls, fronts and sensor clamps, which is based on the invention that the side walls are releasable and the clamping clamps are adjustable when measured.
U vyvinutého zariadenia sa trenie vzorky o steny znížilo na minimum, pretože bočné steny sa před meraním odklápajú a vzorka trie už iba o dno formy, tj. základové došku. Ďalšou prednosťou vyvinutého zariadenia je, že sa objemové změny vzorky sledujú celými čelami sk»n206148In the developed apparatus, the friction of the sample against the walls has been reduced to a minimum, since the side walls are tilted before the measurement and the sample rubs only on the bottom of the mold, ie. foundation thatch. Another advantage of the developed device is that the volume changes of the sample are monitored through the whole faces of the »n206148
208 148208 148
Strnovanými tak, aby dokonale přilnuli k vyšetřovanéj vzorke. Spósob uchytenia snímačov posunu zaručuje vždy súosost snímačov s formou zariadenia a umožňuje plynulé a přesné nastavenie snímačov do potrebnej polohy. Po připojení snímačov na meraciu ústredňu vyvinuté zariadenie umožňuje automatické zistovanie objemových zmien v lubovolných časových intervaloch.Stirred so that they adhere perfectly to the sample to be examined. The positioning of the displacement sensors always ensures the alignment of the sensors with the form of the device and enables smooth and accurate adjustment of the sensors to the required position. After connecting the sensors to the control panel, the developed device enables automatic detection of volume changes at any time intervals.
Rozměry zariadenia sú závislé od druhu sledovanéj vzorky.The dimensions of the device depend on the type of sample to be monitored.
Příkladné prevedenie zariadenia je na výkrese, kde obr. 1 znázorňuje nárys a obr. 2 pódorys. Na základovej doske £ je forma, do ktorej sa umiestňuje vzorka, ktorú sa chce sledovat. Táto forma sa skládá z bočných stien 2, čiel 2 a dna, ktoré tvoří základová doska £.An exemplary embodiment of the device is shown in the drawing. 1 is a front view and FIG. 2 pódorys. On the base plate 6 there is a mold in which the sample to be monitored is placed. This mold consists of the side walls 2, the fronts 2 and the bottom which form the base plate 6.
Před umiestnením sledovanej vzorky do formy sú bočné steny 2 přitlačené zboku k čelám 2 fixovacími skrutkami 2 uchytenými na zvislých čapoch 8 zakotvených v základovej doske 2· Bočné steny 2 i základová doska 1 sú hladké, čelá 2 sú upravené tak, aby dokonale přilnuli k sledovanej vzorke. Před začetím merania sa fixovacie skrutky 2 uvolnia a bočné steny.2 odklopia. Čelá 2 začnú sledovat změny objemu vyšetrovanej vzorky. Hroty snímačov posunu sú buď spojené s čelami 2» alebo sa opierajú o terčíky 10 na čelách 2· Snímače posunu sú upevněné v uchycovacích čelustiach £ snímačov, ktoré zaistujú súosost snímačov so sledovanou vzorkou. Uchycovacie čeluste 4 snímačov sú spojené so základovou doskou £ vodiacimi čapmi 6. Ich posunutie do potrebnej polohy, tj. nastavenie vzdialenosti od čiel 2 sa robí pomocou nastavovacej skrutky 5. Ak třeba vzdialenost nastavovacích čelustí £ snímačov od čiel 2 zváčšit, uvolnia sa skrutky 2 a pósobením pružin 7 dojde k posunu nastavovacích čelustí £ snímačov.Before placing the sample in the mold, the side walls 2 are pressed sideways to the faces 2 by fixing screws 2 fixed to the vertical pins 8 anchored in the base plate 2. sample. Before starting the measurement, the fixing screws 2 are loosened and the side walls 2 are folded away. Heads 2 begin to monitor the volume changes of the sample being examined. The tips of the displacement sensors are either connected to the faces 2 'or are supported by targets 10 on the faces 2 of the displacement sensors. The displacement sensors are mounted in the sensor clamping jaws 6 which align the sensors with the sample to be monitored. The gripping jaws 4 of the sensors are connected to the base plate 6 by guide pins 6. Their displacement to the required position, i. the adjustment of the distance from the faces 2 is done by means of the adjusting screw 5. If, for example, the distance between the sensor setting jaws 6 and the faces 2 increases, the screws 2 are loosened and the springs 7 move the sensor setting jaws.
Fixovanie bočných stien 2 a posun nastavovacích čelustí £ snímačov sa dá urobit i iným spósobom.The fixing of the side walls 2 and the displacement of the sensor adjusting jaws 6 can be done in another way.
Zariadenie je možno použit tiež na zisťovanie iných vlastností Strukturálně vázkých materiálov, připadne materiálov s inou štruktúrou.The device can also be used to detect other properties of structurally bonded materials, or materials with a different structure.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS630679A CS206148B1 (en) | 1979-09-19 | 1979-09-19 | Device for detecting the capacity changes of material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS630679A CS206148B1 (en) | 1979-09-19 | 1979-09-19 | Device for detecting the capacity changes of material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS206148B1 true CS206148B1 (en) | 1981-06-30 |
Family
ID=5409801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS630679A CS206148B1 (en) | 1979-09-19 | 1979-09-19 | Device for detecting the capacity changes of material |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS206148B1 (en) |
-
1979
- 1979-09-19 CS CS630679A patent/CS206148B1/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5357783A (en) | Dynamic shear rheometer and method | |
| JPS59107236A (en) | Viscosity measuring method | |
| CN107796288B (en) | Combined tester for measuring internal friction angle and interface static and dynamic friction angles of granular materials | |
| CN108303347A (en) | A kind of device and its detection method for detecting slump | |
| CN113075391A (en) | Concrete constrained shrinkage test device and test method thereof | |
| CN206891901U (en) | Concrete slump test instrument | |
| CS206148B1 (en) | Device for detecting the capacity changes of material | |
| US10753838B2 (en) | Systems and methods for verification and calibration of hamburg wheel tracker devices | |
| BR112018011571B1 (en) | HAND PORTABLE BROOK AND METHOD FOR DETERMINING RHEOLOGICAL PROPERTIES OF CONCRETE | |
| CN207751827U (en) | A kind of concrete caving degree detecting device | |
| CN110146594A (en) | A kind of device and measuring method for continuously measuring cement setting and hardening rate | |
| RU2049326C1 (en) | Sclerometer | |
| CN212206300U (en) | Steel bar weight deviation measuring device | |
| US3178936A (en) | Flexural testing of materials | |
| CN112880525A (en) | Aperture measuring device | |
| CN112816314A (en) | PC-10 type polymer concrete penetration resistance test device and test method | |
| SU1000862A2 (en) | Polymer material thermal stability determination device | |
| CN214747652U (en) | A steel measuring device | |
| SU1059483A1 (en) | Sclerometer | |
| RU2098793C1 (en) | Method for determination of coefficient of external sliding friction | |
| CN214622649U (en) | A kind of concrete slump test device for building construction | |
| SU1709176A1 (en) | Device for checking position and shape of axis of hole parts | |
| JP2025144362A (en) | Fresh concrete quality evaluation device and fresh concrete quality evaluation method | |
| JPS625658Y2 (en) | ||
| CN118129675A (en) | Monitoring equipment and monitoring method for simultaneously measuring lengths of multiple reinforcing steel bars |