System for testing the setting state of a hydraulically setting material

Abstract

System for testing the setting state of a hydraulically setting material, characterized by a detection unit (10) serving to detect a value of a measured variable sensitive to the setting state, which is designed to contact the material (3) after its laying, and an information transmission unit (11) serving to transmit the detected value to a data collection unit.

Description

[0001] The invention relates to a system for testing the setting state of a hydraulically setting material.

[0002] Hydraulically setting materials, such as concrete or screed mixes, are laid in a soft and malleable state after water has been added. This fresh mix requires a certain setting time to solidify. Until it has reached a sufficient setting state, the laid mix cannot be subjected to further processing or loading. Therefore, knowledge of the setting state is of utmost importance for the continuation of work, for example, the installation of a floor covering on the laid screed or the removal of concrete formwork.

[0003] Accordingly, the object of the invention is to provide an effective and easy-to-use system for testing the setting state of a hydraulically setting material.

[0004] This object is achieved according to the invention by a system which is characterized by a detection unit which serves to detect a value of a measured variable which is sensitive to the setting state and which is designed to contact the material after its laying, and an information transmission unit which serves to transmit the detected value to a data collection unit.

[0005] Contacting the material enables the interaction between the recording unit and the installed material required to record the value of the parameter sensitive to the setting state. This contact is preferably achieved by drilling a hole in the installed material once the material has reached sufficient strength. The recording unit with its measuring sensor used to generate the measured value is inserted into this hole, allowing the measuring sensor to detect the value of the parameter sensitive to the setting state. Contact between the recording unit and the installed material can be achieved in any other way, for example by form-fitting and / or force-fitting embedding in the material, as long as the interaction between the recording unit and the material required for recording the measured value can take place.In particular, the recording unit could also be designed to contact a surface of the material being laid. The measured value can be recorded continuously or discretely. The recorded values ​​of the measured value can be stored in the data collection unit, which allows, in particular, the temporal progression of the setting process to be documented.

[0006] Preferably, the system is characterized by a separating unit configured to separate the detection unit from the laid material, which has an interior designed to releasably accommodate the detection unit. The separating unit protects the detection unit from direct contact with the material. It can be configured such that it remains in the material after completion of the setting test, whereas the detection unit housed within the separating unit is removed for reuse.

[0007] In an advantageous embodiment, the separating unit is designed in the form of a sleeve having a longitudinal axis and a lateral surface surrounding the longitudinal axis at a distance. In particular, the sleeve is cylindrical and can be inserted, for example, pressed or driven into a hole provided for this purpose in the material, so that its lateral surface is held in the hole in a force-fitting manner.

[0008] In this context, it is further provided that the sleeve is open at one of its axial ends and closed at its other axial end. In particular, the open axial end can have an outer radial flange with which the sleeve, inserted into the bore, rests against the surface of the material. The closed axial end points towards the inner axial end of the bore. The sleeve thus forms a receiving space for the detection unit that is freely accessible from its open axial end, whereby this receiving space is closed at the other axial end, thus protecting the detection unit on all sides within the material.

[0009] In an advantageous embodiment, the system is designed such that the detection unit comprises a sensor that supplies an electrical measurement signal corresponding to the measured variable, and a signal processing unit for generating measurement data corresponding to the electrical measurement signal supplied by the sensor. The measurement signal from the sensor is usually an analog electrical signal. This signal is expediently converted by the signal processing unit using an analog / digital converter into a digital measurement data signal suitable for transmission to the data collection unit.

[0010] Furthermore, it is advantageous for the information transmission unit to be configured for transmitting the processed measurement data in a WLAN network. The WLAN network can be implemented, for example, by mobile routers located at the location where the system for testing the setting state is used, in particular at a construction site.

[0011] The measurement parameters sensitive to the setting state are, in particular, humidity and / or temperature. The material to be tested is, in particular, a laid screed or a concrete mass formed in a precast concrete mold or in a concrete formwork.

[0012] In the following, the invention is explained by way of example with reference to the drawing figure.

[0013] In the example shown, a thermal insulation layer 2 is arranged on a load-bearing raw concrete ceiling 1. A screed layer 3 is laid on this thermal insulation layer 2. A bore 5 is drilled into this screed layer 3 from its free upper surface 4.

[0014] A separating unit 6 is force-fitted into the bore 5. This separating unit 6 is in the form of a cylindrical sleeve whose longitudinal axis extends transversely to the surface 4 of the screed layer 3. This sleeve has a cylindrical lateral surface 7 which extends at a radial distance from the longitudinal axis. At its inner end with respect to the bore 5, the sleeve 6 is closed by a radial base 8 connected to the inner edge of the surface 7. The opposite end opens out at the surface 4 of the screed layer 3 and there has an outer radial flange 9 which rests on the surface 4.

[0015] A detection unit 10 is accommodated in the interior of the sleeve 6. This unit comprises a measuring sensor and a signal conditioning unit for the electrical measurement signal supplied by the sensor. The measuring sensor is, for example, a humidity sensor or a temperature sensor.

[0016] Next to the sleeve 6, an information transmission unit 11 is positioned on the surface 4, which is connected on the input side to the output of the detection unit 10 via a connecting cable 12. The information transmission unit 11 receives the measurement data from the detection unit 10 and transmits it to a WLAN network (not shown) for further evaluation for testing the setting state of the screed layer 3. List of reference symbols: 1 raw concrete ceiling 2 thermal insulation layer 3 screed layer 4 Surface 5 Hole 6 Separation unit, sleeve 7 Shell surface 8 Floor 9 Flange 10 Recording unit 11 Information transmission unit 12 connecting cable

Claims

[1] System for testing the setting state of a hydraulically setting material, characterized by a detection unit (10) used to detect a value of a measurement variable sensitive to the setting state, which is designed to contact the material (3) after its laying, and an information transmission unit (11) used to transmit the detected value to a data collection unit. [2] System according to claim 1, characterized by a separating unit (6) designed to separate the detection unit (10) from the laid material (3), which has an interior space designed to releasably receive the detection unit (10). [3] System according to claim 2, characterized by that the separating unit (6) is designed in the form of a sleeve having a longitudinal axis with a lateral jacket surface (7) surrounding the longitudinal axis at a distance. [4] System according to claim 3, characterized bythat the sleeve (6) is open at one of its axial ends and closed at its other axial end (8). [5] System according to one of claims 1 to 4, characterized by that the detection unit (10) has a measuring sensor which supplies an electrical measuring signal corresponding to the measured variable and a signal processing unit for forming measuring data corresponding to the electrical measuring signal supplied by the measuring sensor. [6] System according to claim 5, characterized by that the information transmission unit (11) is designed to transmit the processed measurement data in a WLAN network. [7] System according to one of claims 1 to 6, characterized by that the measured quantity is humidity and / or temperature. [8] System according to one of claims 1 to 7, characterized by that the material (3) is a screed mass or a concrete mass.

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