DE4106923A1 - Porosity measurer for building materials - has injector head for direct infusion of liq. under static pressure via bore in material - Google Patents

Porosity measurer for building materials - has injector head for direct infusion of liq. under static pressure via bore in material

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Publication number
DE4106923A1
DE4106923A1 DE19914106923 DE4106923A DE4106923A1 DE 4106923 A1 DE4106923 A1 DE 4106923A1 DE 19914106923 DE19914106923 DE 19914106923 DE 4106923 A DE4106923 A DE 4106923A DE 4106923 A1 DE4106923 A1 DE 4106923A1
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Prior art keywords
porosity
cylinder
piston
measuring device
building materials
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Withdrawn
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DE19914106923
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German (de)
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Albrecht Baldauf
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Individual
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Individual
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Priority to DE19914106923 priority Critical patent/DE4106923A1/en
Publication of DE4106923A1 publication Critical patent/DE4106923A1/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/38Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
    • G01N33/383Concrete or cement
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082Investigating permeability by forcing a fluid through a sample

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Ceramic Engineering (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

Appts measuring the porosity and water absorption of porous building materials, employs a cylinder (1) with piston (2) which is weight loaded. The working fluid is thus under a constant pressure as shown by manometer (3) in connecting pipe (4) supplying injector cylinder (5) located in bore hole (6) of material under test. Piston displacement (7) related to time enables absolute or relative values of material Density/porosity, strength and water resistance to be evaluated by comparison with known standards. USE/ADVANTAGE - Enables porosity and water take-up of concrete, natural/artifical stone, plaster etc. To be conveniently dtermined outside laboratory. Does not require specially formed test pieces and tests can be carried out in-sit to assist objective selection of materials.

Description

Die Erfindung betrifft eine Vorrichtung zur Baustoffanalyse hinsichtlich der Ermittlung von Einsatzmöglichkeiten verschiedenster Baustoffe, sowie deren Zustandsermittlung und der Auswahl gegebenenfalls durchzuführender Sanierungsmaßnahmen.The invention relates to a device for analyzing building materials the determination of possible uses of various Building materials, as well as their condition determination and the selection if necessary remedial measures to be carried out.

Dazu ist es nötig, die Porosität und die Wasseraufnahmefähigkeit von porösen Baustoffen zu ermitteln.This requires porosity and water absorption of porous building materials.

Bei fast allen bisher dazu eingesetzten Verfahren ist eine bestimmte Probenform und/oder eine spezielle Prüfeinrichtung, die nur unter Laborbedingungen eingesetzt werden kann, erforderlich. So werden nach DIN 51 058 bzw. TGL 13 724 feuerfeste Erzeugnisse auf Gasdurchlässigkeit in speziellen Einrichtungen geprüft.In almost all of the methods used to date, there is a specific one Sample form and / or a special test facility that can only be used under laboratory conditions. Thus, according to DIN 51 058 or TGL 13 724, refractory products are made tested for gas permeability in special facilities.

Nach DIN 52 617 und TGL 33 433/03 wird die Wasseraufnahme von Putz und Festbeton durch Wasserlagerung und Wägung ermittelt. Eine weitere Methode der Ermittlung der Wassereindringtiefe wird an speziellen Prüfkörpern in Laborprüfständen nach DIN 1048 durchgeführt.According to DIN 52 617 and TGL 33 433/03, the water absorption of plaster and hardened concrete determined by water storage and weighing. A Another method of determining the water penetration depth is on special test specimens carried out in laboratory test benches according to DIN 1048.

Der Erfindung liegt die Aufgabe zu Grunde, die Porosität und damit die Wasseraufnahme von Beton, Natur- und Kunststein und ähnlichem zu ermitteln. Die Messung dieser Kriterien sind ausschlaggebend bei der Auswahl sowie der Zustandsanalyse von Baustoffen. Dabei ist es notwendig, Direkt- wie auch Vergleichsmessungen unter Labor- bzw. Baustellenbedingungen durchzuführen, ohne auf bestimmte Probenformen und/oder spezielle Prüfeinrichtungen zurückgreifen zu müssen.The invention is based on the object, the porosity and thus the water absorption of concrete, natural and artificial stone and the like to determine. The measurement of these criteria is crucial in the selection and condition analysis of building materials. It is necessary to take direct as well as comparative measurements Laboratory or construction site conditions to carry out without certain sample shapes and / or special test facilities to have to.

Diese Aufgabe wird durch die erfindungsgemäße Vorrichtung dadurch gelöst, daß der Porenraum über absolute oder vergleichende Messungen der möglichen Wasseraufnahme des zu prüfenden Materials durch Injektion einer Flüssigkeit ermittelt wird.This object is achieved by the device according to the invention solved that the pore space via absolute or comparative measurements the possible water absorption of the material to be tested is determined by injection of a liquid.

Diese Vorrichtung besteht aus einem vertikal angeordneten Zylinder, in welchem ein Kolben beweglich angeordnet ist. Am oberen Ende des Zylinders ragt eine Kolbenstange so aus dem Zylinder, daß an dieser Kolbenstange unterschiedliche Massestücke zur Belastung des Kolbens angebracht werden können. Die Belastung des Kolbens mit Massestücken geschieht in Abhängigkeit von der Höhe des zu erzeugenden erforderlichen Prüfdruckes.This device consists of a vertically arranged cylinder, in which a piston is movably arranged. At the top At the end of the cylinder, a piston rod protrudes from the cylinder that different weights on this piston rod for loading of the piston can be attached. The burden of Pistons with mass pieces happen depending on the height of the required test pressure to be generated.

Am unteren Ende des Zylinders ist über ein Manometer zum Feststellen und Kontrollieren des Prüfdruckes ein Druckschlauch mit einem Injektor verbunden, mit dem die zu injizierende Flüssigkeit in den zu prüfenden Baustoff eingebracht wird. Zur Messung der injizierten Flüssigkeitsmenge wird der Kolbenweg analog, digital oder mit einem Meßschreiber gemessen. Durch Vergleichsmessungen mit bekannten Baustoffen ist die injizierte Flüssigkeitsmenge ein Maß für die Qualität des Baustoffes, wie Wasseraufnahme, Dichtigkeit, Dichte und Festigkeit.At the lower end of the cylinder is a manometer to lock and checking the test pressure with a pressure hose connected to an injector with which the liquid to be injected is introduced into the building material to be tested. To measure the The amount of liquid injected becomes analog, digital or measured with a recorder. Through comparative measurements with known building materials, the amount of liquid injected is a Measure of the quality of the building material, such as water absorption, tightness, Density and strength.

Nachstehend soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden. The invention will be explained in more detail below using an exemplary embodiment are explained.  

In dem vertikalen Zylinder 1 bewegt sich der massebelastete Kolben 2, der einen konstanten Flüssigkeitsdruck erzeugt, welcher durch die den Kolben beaufschlagenden Massestücke bestimmt wird. Dieser Flüssigkeitsdruck wird mit dem Manometer 3 gemessen.Moving in the vertical cylinder 1 is the mass-loaded piston 2 , which generates a constant liquid pressure, which is determined by the masses acting on the piston. This liquid pressure is measured with the manometer 3 .

Über den Druckschlauch 4 und einen Injektor 5 wird die Flüssigkeit in ein Bohrloch 6 in das zu prüfende Material eingepreßt. An dem Maßstab 7 wird der Kolbenweg und damit die eingepreßte Flüssigkeitsmenge in Abhängigkeit von der Zeit abgelesen. Durch Vergleich mit Messungen an anderen Materialien ist es nunmehr möglich, Rückschlüsse auf die Materialeigenschaften und damit in Verbindung stehende Auswahlkriterien zum Materialeinsatz zu treffen.Via the pressure hose 4 and an injector 5 , the liquid is pressed into a borehole 6 in the material to be tested. The piston travel and thus the amount of liquid injected as a function of time are read off on scale 7 . By comparing with measurements on other materials, it is now possible to draw conclusions about the material properties and the associated selection criteria for the material used.

Claims (6)

1. Meßeinrichtung zur Bestimmung der Porosität und der Wasseraufnahme von porösen Baustoffen, dadurch gekennzeichnet, daß in einem Zylinder (1) ein Kolben (2) geführt und mit einer Masse belastet ist und der Zylinder (1) über ein Manometer (3) mit einem Druckschlauch (4) und einem sich an dessen Ende befindlichen Injektor (5) verbunden ist, mit welchem eine Flüssigkeit in den zu prüfenden Baustoff injiziert ist.1. Measuring device for determining the porosity and water absorption of porous building materials, characterized in that a piston ( 2 ) is guided and loaded with a mass in a cylinder ( 1 ) and the cylinder ( 1 ) via a manometer ( 3 ) with a Pressure hose ( 4 ) and an injector ( 5 ) located at its end, with which a liquid is injected into the building material to be tested. 2. Meßeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Kolbenweg auf einer in der Einrichtung integrierten Skaleneinteilung (7) die eingepreßte Flüssigkeitsmenge darstellt.2. Measuring device according to claim 1, characterized in that the piston travel on a scale graduation ( 7 ) integrated in the device represents the amount of liquid injected. 3. Meßeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Kolbenweg durch elektronische Meßgeräte gemessen und als Kurve in Abhängigkeit von der Zeit dargestellt ist.3. Measuring device according to claim 1, characterized in that the piston travel measured by electronic measuring devices and as a curve depending represented by time. 4. Meßeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Injektionsdruck durch einen Gegendruck in einem Zylinder mit doppeltwirkenden Kolben erzeugt ist.4. Measuring device according to claim 1, characterized in that the injection pressure by a counter pressure in a cylinder with double acting Piston is generated. 5. Meßeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Injizierung durch eine Oberflächensonde vorgenommen ist und damit die Prüfung der Wasserundurchlässigkeit nach DIN 1040 ermöglicht ist.5. Measuring device according to claim 1, characterized in that the injection is carried out by a surface probe and thus the test waterproofness according to DIN 1040 is made possible. 6. Meßeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die injizierte Flüssigkeit eine dichtende Flüssigkeit ist.6. Measuring device according to claim 1, characterized in that the injected Liquid is a sealing liquid.
DE19914106923 1991-03-05 1991-03-05 Porosity measurer for building materials - has injector head for direct infusion of liq. under static pressure via bore in material Withdrawn DE4106923A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914106923 DE4106923A1 (en) 1991-03-05 1991-03-05 Porosity measurer for building materials - has injector head for direct infusion of liq. under static pressure via bore in material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914106923 DE4106923A1 (en) 1991-03-05 1991-03-05 Porosity measurer for building materials - has injector head for direct infusion of liq. under static pressure via bore in material

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DE4106923A1 true DE4106923A1 (en) 1991-09-19

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700005A1 (en) * 1992-12-29 1994-07-01 Inst Francais Du Petrole Device for measuring physical characteristic of poorly permeable rock
EP1273902A2 (en) * 2001-07-03 2003-01-08 Technische Universität Device and method for measuring the gas permeability of a porous building material
FR2952181A1 (en) * 2009-11-04 2011-05-06 Centre Nat Rech Scient DEVICE FOR MEASURING THE ACTIVITY OF A LIQUID IN A COMPLEX MEDIUM AND ASSOCIATED METHOD
CN102226748A (en) * 2011-03-28 2011-10-26 东南大学 Pressure measuring instrument for gas permeation test of rock and soil mass
CN102323199A (en) * 2011-08-09 2012-01-18 中国石油天然气股份有限公司 A kind of porosity determination experimental design method and design system thereof
CN106053318A (en) * 2016-06-30 2016-10-26 吉林大学 Device for measuring porosity of porous sound-absorbing material
CN109759163A (en) * 2019-01-29 2019-05-17 杭州佩克昂科技有限公司 A kind of farinograph Special constant temperature priming apparatus
CN111999227A (en) * 2020-08-19 2020-11-27 中国石油大学(北京) Stress sensitivity testing method and device
CN112577898A (en) * 2020-11-23 2021-03-30 中建商品混凝土有限公司 Lightweight aggregate pressure water absorption ratio testing device and method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700005A1 (en) * 1992-12-29 1994-07-01 Inst Francais Du Petrole Device for measuring physical characteristic of poorly permeable rock
EP1273902A2 (en) * 2001-07-03 2003-01-08 Technische Universität Device and method for measuring the gas permeability of a porous building material
EP1273902A3 (en) * 2001-07-03 2003-12-17 Technische Universität Device and method for measuring the gas permeability of a porous building material
US9316572B2 (en) 2009-11-04 2016-04-19 Centre National De La Recherche Scientifique Device for measuring the activity of a liquid in a complex medium and associated method
FR2952181A1 (en) * 2009-11-04 2011-05-06 Centre Nat Rech Scient DEVICE FOR MEASURING THE ACTIVITY OF A LIQUID IN A COMPLEX MEDIUM AND ASSOCIATED METHOD
WO2011055042A1 (en) * 2009-11-04 2011-05-12 Centre National De La Recherche Scientifique Device for measuring the activity of a liquid in a complex medium and associated method
CN102226748A (en) * 2011-03-28 2011-10-26 东南大学 Pressure measuring instrument for gas permeation test of rock and soil mass
CN102323199A (en) * 2011-08-09 2012-01-18 中国石油天然气股份有限公司 A kind of porosity determination experimental design method and design system thereof
CN106053318A (en) * 2016-06-30 2016-10-26 吉林大学 Device for measuring porosity of porous sound-absorbing material
CN106053318B (en) * 2016-06-30 2018-07-24 吉林大学 A kind of device measuring sound-absorbing porous material porosity
CN109759163A (en) * 2019-01-29 2019-05-17 杭州佩克昂科技有限公司 A kind of farinograph Special constant temperature priming apparatus
CN109759163B (en) * 2019-01-29 2024-06-11 杭州佩克昂科技有限公司 Special constant temperature water adding device for powder instrument
CN111999227A (en) * 2020-08-19 2020-11-27 中国石油大学(北京) Stress sensitivity testing method and device
CN112577898A (en) * 2020-11-23 2021-03-30 中建商品混凝土有限公司 Lightweight aggregate pressure water absorption ratio testing device and method

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