Construction of a rain rock determination machine
After two years of research, the first device to determine the durability of rocks against precipitation was built by the research department of the Faculty of Earth Sciences, Damghan University.
According to the International Exhibition of Iranian Stone, methods are currently used to determine the durability of building stones in engineering sciences, which are not able to properly simulate the natural conditions of rocks under the influence of various rains.
Building a device that can simulate the natural environment of building stones in the laboratory was one of the main reasons for building the device to test the durability of building stones against natural and acid rain; this device can largely eliminate the shortcomings and limitations of previous methods. At the same time, it is able to study the different engineering characteristics of building stones against natural and acid rain, which is one of the innovative points related to this project.
The basis of the test machine is to determine the durability of building stones based on the natural conditions of the stone use environment and to investigate the effect of natural and acid precipitation and to apply wet and dry cycles on durability and degradation and change in technical and engineering characteristics of building stones.
The device is made of simple, built-in materials and is able to simulate cycles of normal and acid rain on natural or cut stone samples. After this experiment, an index called the Rock Durability Index (RDI) is determined, which represents the quality of the stone to be used in an area with its own climatic conditions and is a good criterion for selecting building stones for engineering. The area.
The invention of this experimental device has been registered in the intellectual property center of the State Property and Documents Registration Organization and its validity certificate has been obtained from the Scientific and Industrial Research Organization of Iran. Also, the results of the testing of some building stones used in Iran by this device in late 2019 have been published in the Bulletin of Engineering Geology and the Environment.
The study was led by Davood Fereydoni, a researcher and faculty member at the Faculty of Earth Sciences at Damghan University.
* ILNA
