When decomposed granite gets wet, it can undergo several changes that may affect its durability and appearance. The impact of water on decomposed granite largely depends on the climate and rainfall patterns of the area where it is used. In regions with little rainfall, like California, decomposed granite can be a suitable paving material. However, if you live in an area that receives a significant amount of rain, using decomposed granite may not be the best choice.
One of the main issues with decomposed granite when it gets wet is erosion. When exposed to water, the loose particles of decomposed granite can wash away, leading to the gradual loss of the material. This erosion can be especially problematic in areas with heavy rainfall or where water runoff is common. Over time, the surface of the decomposed granite can become uneven and patchy as the finer particles are washed away, leaving behind larger rocks and gravel.
Furthermore, when decomposed granite becomes wet, it can become muddy and mushy, making it unpleasant to walk or drive on. The water can mix with the loose particles, creating a slurry-like consistency. This can make the surface slippery and messy, compromising its functionality and aesthetic appeal. In high-traffic areas, the mushy decomposed granite may track indoors, causing additional cleaning and maintenance issues.
In my personal experience as a gardener and landscaper, I have seen instances where decomposed granite was used in areas with regular rainfall. During wet seasons, the decomposed granite would often turn into a muddy mess, requiring frequent maintenance and re-leveling. This not only added to the workload but also made the area less usable and visually unappealing.
To mitigate the negative effects of water on decomposed granite, several measures can be taken. One option is to install proper drainage systems to redirect water away from the decomposed granite surface. This can help minimize erosion and reduce the amount of water that comes into contact with the material. Additionally, adding stabilizers or binders to the decomposed granite can help improve its water resistance and prevent it from becoming muddy when wet. These additives help to bind the particles together, creating a more solid and stable surface.
When decomposed granite gets wet, it can erode, turn mushy, and become muddy. This can be particularly problematic in areas with significant rainfall, where the material may lose its durability and aesthetic appeal. However, in regions with little rainfall, decomposed granite can still be a suitable paving material. By implementing proper drainage systems and using stabilizers, the negative effects of water on decomposed granite can be minimized. It is important to consider the climate and rainfall patterns of your area before choosing decomposed granite as a paving material.
