Phosphogypsum ceramsite ball and spherical and gravel type phosphogypsum ceramsite ball light aggregate water stable layer

Abstract

The invention provides a phosphogypsum ceramsite ball. The phosphogypsum ceramsite ball comprises a phosphogypsum core, an oversulfated phosphogypsum layer wrapping the phosphogypsum core, and a cement layer wrapping the oversulfated phosphogypsum layer. The phosphogypsum core is formed by granulating original phosphogypsum, calcium oxide, cement clinker, mineral powder and residual slurry of theelectric pole, and the over-sulfur phosphogypsum layer is formed by mixing fine phosphogypsum, slag and cement clinker. Meanwhile, the invention further provides two kinds of water stable layers obtained by applying the phosphogypsum ceramsite ball, the 7-day unconfined compressive strength can reach 3-4.8 MPa, and the phosphogypsum ceramsite ball can be used for base structures of heavy traffic in expressways and first-grade highways.

Description

technical field

[0001] The invention relates to the technical field of new building materials, in particular to a phosphogypsum ceramsite ball, and a spherical and crushed stone phosphogypsum ceramsite ball light aggregate water stabilization layer. Background technique

[0002] From top to bottom, the road structure is generally divided into asphalt concrete layer, base layer, gravel cushion, compacted soil foundation, etc. Among them, the base is divided into upper base, lower base or sub-base. Generally, cement-stabilized graded crushed stone base is used, referred to as water-stabilized layer. Graded crushed stone is used as aggregate, and a certain amount of cementitious material and sufficient mortar volume are used for filling. The gaps in the aggregate are paved and compacted according to the principle of embedded extrusion. Its compaction is close to compactness, and its strength mainly depends on the principle of interlocking and locking between crushed stones, an...

Examples

Embodiment 1

[0020] The embodiment of the present invention proposes a phosphogypsum ceramsite ball, which includes a phosphogypsum core, a persulfur phosphogypsum layer wrapped outside the phosphogypsum core, and a cement layer wrapped outside the persulfur phosphogypsum layer; wherein , The phosphogypsum core includes 88% original phosphogypsum, 0.26% calcium oxide, 4% cement clinker, 7.24% mineral powder and 0.5% electric pole residual slurry, which is granulated, and phosphorus is added during granulation The total weight of the gypsum core is 15% water; the layer of persulfate gypsum consists of 46% fine phosphogypsum, 49% slag and 5% cement clinker after mixing.

[0021] Preferably, the phosphogypsum core is mixed with the mixed persulfophosphogypsum layer components 14 hours after granulation, and wrapped to form the persulfophosphogypsum layer.

[0022] Preferably, cement powder is mixed in 20 hours after wrapping to form the persulfophosphogypsum layer, and wrap to form the cement...

Embodiment 2

[0026] The embodiment of the present invention proposes a phosphogypsum ceramsite ball, which includes a phosphogypsum core, a persulfur phosphogypsum layer wrapped outside the phosphogypsum core, and a cement layer wrapped outside the persulfur phosphogypsum layer; wherein , The phosphogypsum core includes 88% original phosphogypsum, 0.26% calcium oxide, 4% cement clinker, 5.74% mineral powder and 2% electric pole residual slurry, which are granulated, and phosphorus is also added during granulation The weight of the gypsum core is 16.5% water; the layer of persulfate gypsum consists of 45% fine phosphogypsum, 50% slag and 5% cement clinker after mixing.

[0027] Preferably, the phosphogypsum core is mixed with the mixed persulfophosphogypsum layer components 16 hours after granulation, and wrapped to form the persulfophosphogypsum layer.

[0028] Preferably, cement powder is mixed in 24 hours after wrapping to form the persulfophosphogypsum layer, and wrap to form the cement...

Embodiment 3

[0032] The embodiment of the present invention proposes a phosphogypsum ceramsite ball, which includes a phosphogypsum core, a persulfur phosphogypsum layer wrapped outside the phosphogypsum core, and a cement layer wrapped outside the persulfur phosphogypsum layer; wherein , The phosphogypsum core includes 88% original phosphogypsum, 0.26% calcium oxide, 4% cement clinker, 4.74% mineral powder and 3% electric pole residual slurry, which are granulated, and phosphorus is also added during granulation The weight of the gypsum core is 18% water; the layer of persulfate gypsum consists of 50% fine phosphogypsum, 45% slag and 5% cement clinker after mixing.

[0033] Preferably, the phosphogypsum core is mixed with the mixed persulfophosphogypsum layer components 18 hours after granulation, and wrapped to form the persulfophosphogypsum layer.

[0034] Preferably, cement powder is mixed in 28 hours after wrapping to form the persulfophosphogypsum layer, and wrap to form the cement l...

technical field

[0001] The invention relates to the technical field of new building materials, in particular to a phosphogypsum ceramsite ball, and a spherical and crushed stone phosphogypsum ceramsite ball light aggregate water stabilization layer. Background technique

[0002] From top to bottom, the road structure is generally divided into asphalt concrete layer, base layer, gravel cushion, compacted soil foundation, etc. Among them, the base is divided into upper base, lower base or sub-base. Generally, cement-stabilized graded crushed stone base is used, referred to as water-stabilized layer. Graded crushed stone is used as aggregate, and a certain amount of cementitious material and sufficient mortar volume are used for filling. The gaps in the aggregate are paved and compacted according to the principle of embedded extrusion. Its compaction is close to compactness, and its strength mainly depends on the principle of interlocking and locking between crushed stones, an...

Examples

Embodiment 1

[0020] The embodiment of the present invention proposes a phosphogypsum ceramsite ball, which includes a phosphogypsum core, a persulfur phosphogypsum layer wrapped outside the phosphogypsum core, and a cement layer wrapped outside the persulfur phosphogypsum layer; wherein , The phosphogypsum core includes 88% original phosphogypsum, 0.26% calcium oxide, 4% cement clinker, 7.24% mineral powder and 0.5% electric pole residual slurry, which is granulated, and phosphorus is added during granulation The total weight of the gypsum core is 15% water; the layer of persulfate gypsum consists of 46% fine phosphogypsum, 49% slag and 5% cement clinker after mixing.

[0021] Preferably, the phosphogypsum core is mixed with the mixed persulfophosphogypsum layer components 14 hours after granulation, and wrapped to form the persulfophosphogypsum layer.

[0022] Preferably, cement powder is mixed in 20 hours after wrapping to form the persulfophosphogypsum layer, and wrap to form the cement...

Embodiment 2

[0026] The embodiment of the present invention proposes a phosphogypsum ceramsite ball, which includes a phosphogypsum core, a persulfur phosphogypsum layer wrapped outside the phosphogypsum core, and a cement layer wrapped outside the persulfur phosphogypsum layer; wherein , The phosphogypsum core includes 88% original phosphogypsum, 0.26% calcium oxide, 4% cement clinker, 5.74% mineral powder and 2% electric pole residual slurry, which are granulated, and phosphorus is also added during granulation The weight of the gypsum core is 16.5% water; the layer of persulfate gypsum consists of 45% fine phosphogypsum, 50% slag and 5% cement clinker after mixing.

[0027] Preferably, the phosphogypsum core is mixed with the mixed persulfophosphogypsum layer components 16 hours after granulation, and wrapped to form the persulfophosphogypsum layer.

[0028] Preferably, cement powder is mixed in 24 hours after wrapping to form the persulfophosphogypsum layer, and wrap to form the cement...

Embodiment 3

[0032] The embodiment of the present invention proposes a phosphogypsum ceramsite ball, which includes a phosphogypsum core, a persulfur phosphogypsum layer wrapped outside the phosphogypsum core, and a cement layer wrapped outside the persulfur phosphogypsum layer; wherein , The phosphogypsum core includes 88% original phosphogypsum, 0.26% calcium oxide, 4% cement clinker, 4.74% mineral powder and 3% electric pole residual slurry, which are granulated, and phosphorus is also added during granulation The weight of the gypsum core is 18% water; the layer of persulfate gypsum consists of 50% fine phosphogypsum, 45% slag and 5% cement clinker after mixing.

[0033] Preferably, the phosphogypsum core is mixed with the mixed persulfophosphogypsum layer components 18 hours after granulation, and wrapped to form the persulfophosphogypsum layer.

[0034] Preferably, cement powder is mixed in 28 hours after wrapping to form the persulfophosphogypsum layer, and wrap to form the cement l...

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