Exterior Cement Panel

Abstract

An exterior cement panel includes a cement plate comprising about 80 percent of plastic cement and about 20 percent of coal ash; fiber glass mesh layers embedded in the cement plate; and wood sliver layers embedded in the cement plate and sandwiched with the fiber glass mesh layers. The wood sliver layers are treated with preservative and fire-retardant.

What is claimed is: 
     
         1 . An exterior cement panel comprising:
 a cement block portion comprising plastic cement, forming approximately 20 percent of the exterior cement panel in volume;   a plurality of fiber glass mesh layers embedded in the cement block portion; and   a plurality of wood sliver layers embedded in the cement block portion and sandwiched with the plurality of fiber glass mesh layers, forming approximately 80 percent of the exterior cement panel in volume,   wherein the plurality of wood sliver layers are treated with preservative and fire-retardant.   
     
     
         2 . The exterior cement panel of  claim 1 , wherein the plastic cement comprises about 80 percent of cement and 20 percent of coal ash or chalkstone power. 
     
     
         3 . The exterior cement panel of  claim 1 , wherein each of the plurality of wood sliver layers comprises a plurality of wood slivers. 
     
     
         4 . The exterior cement panel of  claim 3 , wherein the wood sliver has a needle shape. 
     
     
         5 . The exterior cement panel of  claim 4 , wherein the plurality of wood slivers are overlapped and pressed to form an irregular mesh on a given plane. 
     
     
         6 . The exterior cement panel of  claim 4 , wherein the wood sliver has a length which is much larger than the thickness. 
     
     
         7 . The exterior cement panel of  claim 1 , wherein each of the fiber glass mesh layers comprises a plurality of fiber glass threads. 
     
     
         8 . The exterior cement panel of  claim 7 , wherein the plurality of fiber glass threads are disposed crisscrossed with one another to form a mesh. 
     
     
         9 . The exterior cement panel of  claim 1 , wherein the wood sliver comprises hard wood and bamboo, and wherein the hardwood comprises oak. 
     
     
         10 . The exterior cement panel of  claim 1 , further comprising a plurality of stainless steel screens, and wherein the plurality of stainless steel screens are disposed with a predetermined interval. 
     
     
         11 . A method for manufacturing an exterior cement panel comprising:
 providing a fiber glass screen;   providing a wood sliver layer by cutting wood slivers out of wood, immersing the wood slivers in preservative and fire-retardant, and drying;   attaching the wood sliver layer to the fiber glass screen;   applying at least one layer of plastic cement to the attached wood sliver layer and fiber glass screen, wherein the plastic cement comprises a plurality of fiber glass threads dispersed randomly;   hardening the wood sliver layer and the fiber glass screen embedded in the at least one layer of cement (a pressed board) under pressure; and   curing the pressed board in steam of about 200 degrees in Celsius.   
     
     
         12 . The method of  claim 11 , wherein the wood comprises a hard wood and bamboo, and wherein the hard wood comprises oak. 
     
     
         13 . The method of  claim 11 , wherein the wood comprises strong fibers. 
     
     
         14 . The method of  claim 11 , wherein the wood sliver has a needle shape. 
     
     
         15 . The method of  claim 11 , wherein the plastic cement comprises about 80 percent of cement and about 20 percent of coal ash or chalkstone power. 
     
     
         16 . The method of  claim 15 , wherein the plastic cement comprises concrete glue or glue and ammonium bichromate. 
     
     
         17 . The method of  claim 15 , further comprising a step of inserting one or more stainless steel screen with predetermined intervals. 
     
     
         18 . An exterior cement panel comprising:
 a cement block portion comprising plastic cement, forming approximately 20 percent of the exterior cement panel in volume;   one or two fiber glass mesh layers embedded in the cement block portion;   a plurality of wood sliver layers embedded in the cement block portion and sandwiched with the plurality of fiber glass mesh layers, forming approximately 80 percent of the exterior cement panel in volume; and   one stainless steel screen disposed by or between the one or two fiber glass mesh layers,   wherein the plurality of wood sliver layers are treated with preservative and fire-retardant,   wherein the exterior cement panel has a thickness of about ¾ inches.   
     
     
         19 . The exterior cement panel of  claim 18 , further comprising a plurality of fiber glass threads dispersed in the plastic cement. 
     
     
         20 . The exterior cement panel of  claim 18 , wherein the plastic cement comprises concrete glue or glue and ammonium bichromate.