What does "bentonite clay grout" consist of?

Bentonite clay grout consists primarily of bentonite clay mixed with clear water. Bentonite is a type of clay that has the ability to expand and contract, making it highly effective for sealing and preventing water flow in boreholes, wells, and other areas where groundwater may be a concern. When bentonite clay is mixed with water, it forms a slurry that can be easily pumped and applied, providing a strong, impermeable barrier that helps to stabilize well structures and protect water sources from contamination.

The other options, while they present components that might seem relevant, do not accurately describe the typical composition of bentonite clay grout. For example, while a mixture of bentonite and cement can be used in some specific applications, it is not the standard formulation for grout used in well drilling and sealing. Similarly, using bentonite clay solely without water would not create a functional grout; it requires water to activate the clay's properties. The inclusion of sand with bentonite clay is also not conventional for grout and would alter its intended sealing capabilities. Therefore, the mixture of bentonite clay and clear water accurately represents the proper formulation of bentonite clay grout.