Question

A moist sample of weight 346g after drying at 105 C it's weight 284g the specific gravity of soil mass Gm = 1.86 and specific gravity of solids Gs = 2.7 estimate water content and void ratio

Answer 1

The water content of the soil is 21.83%, calculated by the weight difference before and after drying. The void ratio is 0.898, derived using the specific gravities of the soil mass and solids.

Step-by-step explanation:

The student is seeking to calculate the water content and the void ratio of a soil sample, given its mass before and after drying, as well as the specific gravities of the soil mass and solids.

The water content can be determined by the difference in mass before and after drying, and the void ratio can be estimated using the specific gravity of the soil solids and the mass of the dry soil.

To calculate the water content (w), we use the formula:

w = (Weight of water / Weight of dry soil) * 100%

w = ((346g - 284g) / 284g) * 100%

= 21.83%

For the void ratio (e), we apply the formula:

e = (Gm * w) / (Gs - Gm), where Gm is the specific gravity of soil mass and Gs is the specific gravity of solids.

e = (1.86 * 0.2183) / (2.7 - 1.86)

e = 0.898