Electro-Hygro-Thermal Changes in Damp Masonry

Humidity and temperature variations in buildings - also known as hygro-thermal changes - are well known among building professionals. Heating creates evaporation, while cooling often results in condensation. Because air always contains quite significant amounts of humidity in vapor form…

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Lab Test and Results

Experimental SetupWe have done an in-depth investigation on how damp masonry responds to artificially generated external electromagnetic fields. Using a commercial function generator we applied to our test wall a wide variety of regular and irregular wave forms and pulses…

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Capillary Effect vs Evaporation from the Soil

After doing several experiments on the topic of water absorption into porous bricks, and comparing and cross-referencing the results, we made an interesting discovery about the mechanism of fast vs slow wetting.Experimental SetupExperiment 1: we applied water directly at the…

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Rising Damp Recreated in a Lab

Recreating Rising Damp in the LabRising damp can be recreated in a lab under "artificial" conditions very easily.We used some common "old-style" porous bricks, purchased from a brick factory. We put it in a plastic tray, added some water to…

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Controlling Moisture with Non-Invasive Means

The fact that certain wave forms and frequencies affect the movement of moisture in porous building materials, can open the door to new, non-invasive technologies in moisture control - both drying and wetting - applicable to a wide variety of fields,…

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Humidity vs. Voltage Changes

Dumping water at the base of a brick sitting in a tray - as we have found out - creates a very fast capillary rise, generating a lot of change quickly. Because most old houses are not sitting in water…

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A Typical Wetting-Drying Cycle

Let's analyze in detail the natural wetting and drying cycle of a single brick - the fundamental building blocks of houses. The findings described here also apply to stones and other natural porous building materials.Experimental SetupFor this experiment we used…

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What Do We Research and Why?

Welcome to our research section.Why Did We Engage In Research?Here is a bit if background to the story.We started our activity back in 2013. After surveying a few thousand old buildings for dampness, having in-depth discussions with many building professionals…

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