SU497520A1 - Method for determining the impregnation time of porous materials - Google Patents
Method for determining the impregnation time of porous materialsInfo
- Publication number
- SU497520A1 SU497520A1 SU2026175A SU2026175A SU497520A1 SU 497520 A1 SU497520 A1 SU 497520A1 SU 2026175 A SU2026175 A SU 2026175A SU 2026175 A SU2026175 A SU 2026175A SU 497520 A1 SU497520 A1 SU 497520A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sample
- determining
- porous materials
- impregnation time
- impregnation
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
1one
Изобретение относитс к способам контрол строительных материалов и может быть использовано в промышленности строительных материалов и других отрасл х народного хоз йства, где необходимо контролировать капилл рность пористых материалов, характеризующуюс временем пропитки образца контрольной жидкостью, например кровельного картона.The invention relates to methods for controlling building materials and can be used in the building materials industry and other sectors of the national economy, where it is necessary to control the capillary nature of porous materials, which is characterized by the time of sample impregnation with a control fluid, such as roofing paperboard.
Известен способ определени времени пропитки пористых материалов, заключающийс в погружении контролируемого образца торцом в контрольную жидкость и отсчете времени пропитки.A known method for determining the time of impregnation of porous materials consists in immersing the test sample with an end face in the test liquid and counting the time of impregnation.
С целью повышени точности измерени образец пористого материала помещают в датчик измерительной аппаратуры, например между обкладками конденсатора, а врем пропитки отсчитывают от момента начала до момента прекращени изменени электрических свойств образца.In order to improve the accuracy of measurement, a sample of a porous material is placed in a sensor of measuring equipment, for example, between the plates of a capacitor, and the impregnation time is counted from the beginning until the change in the electrical properties of the sample ceases.
Образец пористого материала помещают в датчик, например между обкладками конденсатора , включенный в измерительную последовательную цепь, состо щую из известного измерител емкости указанного конденсатора , дифференциатора, выдел ющего первую производную по изменению емкости, и автоматического секундомера, включающегос приA sample of the porous material is placed in the sensor, for example, between the plates of a capacitor, included in a measuring series circuit consisting of a known capacitance meter of the specified capacitor, a differentiator that extracts the first derivative of the capacitance change, and an automatic stopwatch that turns on.
по влении сигнала с дифференциатора по первой производной.the appearance of the signal from the differentiator with respect to the first derivative.
Образец выступающим из обкладок конденсатора торцом помещают в контрольную жидкость , и с момента изменени электрических свойств образца в пределах геометрических размеров обкладок конденсатора, обусловленных процессом впитывани , измерительна аппаратура автоматически начинает отсчетThe sample protruding from the capacitor plates is placed in the control liquid, and from the moment the electrical properties of the sample change within the geometrical dimensions of the capacitor plates caused by the absorption process, the measuring equipment automatically starts counting
времени и заканчивает этот отсчет в момент прекращени изменени электрических свойств образца, т. е. когда образец пропитаетс контрольной жидкостью на высоту обкладок конденсатора.time and ends this counting at the moment when the change in the electrical properties of the sample ceases, i.e. when the sample is soaked with the control liquid to the height of the capacitor plates.
При этом выбранные геометрические размеры обкладок конденсатора тождественны геометрическим размерам образца и задаваемой отметке по его высоте при известном лабораторном способе определени времени пропитки .In this case, the selected geometrical dimensions of the capacitor plates are identical with the geometrical dimensions of the sample and given a mark by its height with the known laboratory method for determining the impregnation time.
Предмет изобретени Subject invention
Способ определени времени пропитки пористых материалов, заключающийс в погружении контролируемого образца торцом в конТ|рольную жидкость и отсчете времени пропитки , отличающийс тем, что, с целью повышени точности, образец пористого материала помещают в датчик измерительной аппаратуры , например между обкладками конденсатора , а врем пропитки отсчитывают от момента начала до момента прекращени изменени электрических свойств образца.A method for determining the time of impregnation of porous materials, which consists in immersing the test sample with an end face in a control liquid and counting the impregnation time, characterized in that, in order to improve accuracy, a sample of porous material is placed in a measuring instrument sensor, for example, between the plates of a capacitor It is counted from the beginning to the end of the change in the electrical properties of the sample.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2026175A SU497520A1 (en) | 1974-05-24 | 1974-05-24 | Method for determining the impregnation time of porous materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2026175A SU497520A1 (en) | 1974-05-24 | 1974-05-24 | Method for determining the impregnation time of porous materials |
Publications (1)
Publication Number | Publication Date |
---|---|
SU497520A1 true SU497520A1 (en) | 1975-12-30 |
Family
ID=20585171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2026175A SU497520A1 (en) | 1974-05-24 | 1974-05-24 | Method for determining the impregnation time of porous materials |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU497520A1 (en) |
-
1974
- 1974-05-24 SU SU2026175A patent/SU497520A1/en active
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