Mud protection involves the use of a mixture of water, bentonite, and other additives such as CMC. In projects like diaphragm wall trenching and bored pile drilling, the static pressure exerted by the mud on the trench walls and the mud cake formed on the walls effectively prevent collapse of the trenches or boreholes. Additionally, the mud serves to carry cuttings and cool and lubricate the machinery. Mud with a certain viscosity can discharge cuttings along with it.

Characteristics:

1. Reduces borehole wall collapse, pile body shrinkage, and pile breakage.

2. Enables more precise control of the borehole diameter, reduces the amount of soil excavated and concrete poured, and saves material and machinery costs.

3. Low sand content in the slurry allows for self-cleaning, automatic separation from concrete, extends drill bit life, and improves concrete pouring quality.

4. Easy to use, shortens slurry preparation time.

5. Pollution-free, an environmentally friendly product.