A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method of processing coir includes using a cylinder having spikes on an outside surface of the cylinder to shred compressed coir into dry, shredded coir. A method of processing coir includes using a rotating cylinder with spikes on an outside surface of the cylinder to shred compressed coir into dry, shredded coir and hydrating the dry, shredded coir to a predetermined moisture level to produce moist coir.

A method of processing coir includes using a cylinder having spikes on an outside surface of the cylinder to shred compressed coir into dry, shredded coir. A method of processing coir includes using a rotating cylinder with spikes on an outside surface of the cylinder to shred compressed coir into dry, shredded coir and hydrating the dry, shredded coir to a predetermined moisture level to produce moist coir.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for treating expansive soils includes excavating a hole in a superficial expansive soil layer from an excavation site to form the hole and form an expansive soil material. Further, the expansive soil material is mixed with an inert material, at least two chemical additives, and a binder to form an additive soil material. The additive soil material is further poured into the hole in the excavation site to form an additive soil layer. The inert material is a sand, the chemical additives are a sulfur and a silica fume, and the binder is a dicyclopentadiene. The sand and the sulfur are present in the additive soil material in an amount from 30 wt. % to 40 wt. % and 12 wt. % to 25 wt. %, respectively, based on a total weight of the additive soil material.

A method for processing raw coconut coir pith into fine particles having a size range of from 0.001 mm to 7 mm and the use of such fine particles directly or in formulated form in agricultural, industrial and commercial applications.

A humic acid composition includes fulvic acid, ulmic acid and black humic acid. Fulvic acid is in an amount ranging from 64% to 98 wt % based on a sum weight of fulvic acid, ulmic acid and black humic acid. The content of phenol hydroxyl groups is in a range from 0.76 mmol/g to 2.42 mmol/g in the humic acid composition. The humic acid composition contains a high content of fulvic acid with small molecular weight and a high content of active functional groups, and a high content of phenolic hydroxyl in the active groups. The humic acid composition can provide microbial organic source for soil directly, and improve the nutrient of crops and the soil environment in rhizosphere to promote the breeding of microorganism and delay the attenuation rate of soil microbes.