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Pores (the spaces that exist between soil particles) provide for the passage and/or retention of gasses and moisture within the soil profile.The soil's ability to retain water is strongly related to particle size; water molecules hold more tightly to the fine particles of a clay soil than to coarser particles of a sandy soil, so clays generally retain more water. [2]
If a soil is composed of at least 5 percent of these clay minerals by weight, it could have the ability to shrink and swell. [3] This property is measured using coefficient of linear extensibility (COLE) values. If a soil has a COLE value greater than 0.06, then it can cause structural damage. [2] A COLE value of 0.06 means that 100 inches of ...
"The key is to make sure the pot has good drainage so excess water can escape," adds Ramos. ... silt, and clay. "Any bag of indoor potting soil you pick up at the store will fit the bill," says ...
The clay particles are only weakly bound to each other, so various cations or polymers can be bound within the interlayer space. Biopolymers have been shown to strengthen soils both by cohesion with clay particles to form polymer-clay matrices and by promoting the aggregation of coarser soil particles with each other within the polymer-clay matrix.
For the clay soil it has been found that L=0.15 mm and D=2.7. [13] The surface tension of water explains why the water does not drain out of a wet sand castle or a moist ball of clay. Negative water pressures make the water stick to the particles and pull the particles to each other, friction at the particle contacts make a sand castle stable.
At the first sign of color changes, try to cut back your watering and only water when the first few inches of soil are dry. If planted in a container, make sure that the pot has plenty of drainage ...
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