SU618678A1 - Method of determining deposition ability of concrete mixtures - Google Patents
Method of determining deposition ability of concrete mixturesInfo
- Publication number
- SU618678A1 SU618678A1 SU772457330A SU2457330A SU618678A1 SU 618678 A1 SU618678 A1 SU 618678A1 SU 772457330 A SU772457330 A SU 772457330A SU 2457330 A SU2457330 A SU 2457330A SU 618678 A1 SU618678 A1 SU 618678A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- concrete mixtures
- determining
- deposition ability
- amplitude
- determining deposition
- Prior art date
Links
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
(54) СПОСОБ ОПРЕДЕЛЕНИЯ УДОБОУКЛАДЫВАЕМОСТИ БЕТОННОЙ СМЕСИ(54) METHOD FOR DETERMINING THE FERTILITY OF CONCRETE MIXTURE
Изобретение относитс к строительным материалам, а именно к способам определет ни удобоуклад| 1ваемости (конснстенции) бетонной смеси в процессе ее приготовлени и укладки.The invention relates to building materials, and in particular to the methods that determine the handbook | Permeability (constance) of the concrete mix in the process of its preparation and laying.
Известен способ определени консистенции бетонной смеси, включающий уплотнение ее вибрированием и фиксацию изменени электропроводности, по достижении посто нной величины которой уплотнение прекращают 1.There is a known method for determining the consistency of a concrete mix, which includes compaction by vibrating it and recording the change in electrical conductivity, upon reaching a constant value of which the seal is stopped 1.
Недостаток способа - низка точность определени .The disadvantage of this method is low accuracy of determination.
Наиболее близким из известных вл етс способ определени удобоукладываемости бетонной смеси путем непрерывного вибрировани ее с помощью вибратора и регистрации одного из физических параметров 2.The closest known one is a method for determining the workability of a concrete mix by continuously vibrating it with a vibrator and registering one of the physical parameters 2.
По данному способу производ т отбор уплотн емых с помощью вибрировани проб дл определени расчетного объемного веса через равные промежутки времени.In this method, vibration-compacted samples are taken to determine the calculated volumetric weight at regular intervals.
К недостаткам способа относ тс больща трудоемкость и длительность процесса определени удобоукладываемости.The disadvantages of the method are the greater laboriousness and duration of the process of determining the workability.
Цель изобретени - повыщение точности определени и сокращение трудозатрат при измерении.The purpose of the invention is to increase the accuracy of determination and reduce labor costs in the measurement.
Достигаетс цель тем, что регистрируют амплитуду прощедших через бетонную смесь звуковых колебаний от вибратора, а о ее удобоукладываемости суд т по времени достижени максимального значени амплитуды звуковых колебаний.The goal is achieved by registering the amplitude of sound vibrations from a vibrator passed through a concrete mixture, and its workability is judged by the time when the maximum amplitude of sound vibrations is reached.
Способ осуществл ют следующим образом . Звуковые колебани в процессе вибрации от виброизлучател (вибростола) проход т через бетонную смесь на приемный датчик. После преобразовани звуковых колебаний датчиком в электрические колебани и усилени их в усилителе измер ют амплитуду звуковых колебаний и фиксируют врем уплотнени электросекундомером.The method is carried out as follows. The sound vibrations in the process of vibration from the vibration emitter (vibrating table) pass through the concrete mixture to the receiving sensor. After the acoustic oscillations are converted by the sensor into electrical oscillations and amplified in the amplifier, the amplitude of the acoustic oscillations is measured and the compaction time is recorded with an electric seconds counter.
Амплитуда звуковых колебаний с начала вибрации увеличиваетс с минимальной величины до максимальной, котора вл етс посто нной величиной дл любой консистенции бетонной смеси.The amplitude of the sound vibrations from the beginning of the vibration increases from a minimum value to a maximum, which is a constant value for any consistency of the concrete mix.
Врем изменени амплитуды звуковых колебаний от минимальной до максимальной величины, по которой суд т об удобоукладываемости , измер ют в процессе вибрации по электросекундомеру, который отключаетс при достижении уплотнени бетонной смесью расчетного объемного веса. т. е. по достижению амплитуды максимального значени .The time of change of the amplitude of sound vibrations from the minimum to the maximum value, according to which workability is judged, is measured during the vibration process using an electric second, which turns off when the concrete mix reaches a calculated volume weight. i.e. upon reaching the amplitude of the maximum value.
Удобоукладываемость бетонной смеси определ ют по времени изменени амплитуды звуковых колебаний от минимального до максимального значени . Шкала секундомера проградуирована в единицах удобоукладываемости в сантиметрах по тарйровочным данным.The workability of the concrete mixture is determined by the time of change of the amplitude of sound vibrations from the minimum to the maximum value. The stopwatch scale is calibrated in units of workability in centimeters according to the calibration data.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772457330A SU618678A1 (en) | 1977-02-25 | 1977-02-25 | Method of determining deposition ability of concrete mixtures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772457330A SU618678A1 (en) | 1977-02-25 | 1977-02-25 | Method of determining deposition ability of concrete mixtures |
Publications (1)
Publication Number | Publication Date |
---|---|
SU618678A1 true SU618678A1 (en) | 1978-08-05 |
Family
ID=20697358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772457330A SU618678A1 (en) | 1977-02-25 | 1977-02-25 | Method of determining deposition ability of concrete mixtures |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU618678A1 (en) |
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1977
- 1977-02-25 SU SU772457330A patent/SU618678A1/en active
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