Drying sand to prevent freezing without the use of salt

Details Drying sand to prevent freezing without the use of salt Drying sand to prevent freezing without the use of salt

1998-10-15

2000-05-16

Benzion, Gary

Plant husbandry

Process

106812, 164456, 291 38, A01B 7900, A01B 7902, B60B 3904, C04B 1406, A01C 100

Patent

active

060619562

ABSTRACT:
A method for supplying dry sand for spreading on road surfaces in freezing temperatures in a condition in which the sand remains fluid in freezing temperatures without the addition of salt includes the steps of drying the sand by providing a naturally occurring bed of the sand having an upper surface of the bed exposed to sunlight; planting on the upper surface a covering crop of a type such as alfalfa having deep roots which extend through the whole bed up to thirty feet deep in search of a water table below the bed and growing the crop for a period of time sufficient to allow the roots to penetrate the bed and to extract moisture from the bed to dry the sand in the bed. The dry sand is extracted from the bed and stored temporarily in a closed storage which prevents the re-introduction of moisture for subsequent use on road surfaces without the necessity of salt to keep the sand fluid for spreading.

REFERENCES:
Schnoor et al., Phytoremediation of Organic and Nutrient Contaminants, Enviromental Science and Technology, vol. 29, No. 7, 318A-323A, 1995.

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