Soil Additives to Improve the Physical Nature of Soil Aerating the Soil
With soil amendments Aerating the soil will allow water and nutrients to more easily move through it and reach plant roots. Horticultural amending clay soil are made from 100% natural clay, plus they don't hold any excess water. They are clean, pH stable, and offer great aeration.
Look for Gypsum, Perlit, Vermiculite to improve aeration of compacted soil.