Low carbon emission concrete for walkways and paths, binders and methods thereof

Abstract

A reduced carbon emission concrete including a novel combination of novel binder and rock quarry waste as the aggregate. The novel binder includes cements, lime and slag. Reducing carbon emission in all stages of concrete based walkways and paths construction, starting from the materials creating the concrete through the method of construction and included elements.

What is claimed is: 
     
         1 . A low carbon emission concrete mixture comprising: a hydraulic binder, an aggregate mix and water; wherein the hydraulic binder comprises: cements, lime and slag. 
     
     
         2 . The concrete mixture of  claim 1 , comprising 5-30% w/w hydraulic binder, 40-80% w/w aggregate mix and 5-40% w/w water. 
     
     
         3 . The concrete mixture of  claim 1 , wherein the aggregate mix includes rock quarry waste. 
     
     
         4 . The concrete mixture of  claim 3 , wherein the gradation of the aggregate mix includes: coarse sand: 9%-16% w/w, fine sand: 8%-15% w/w, silt-clay: 25%-35% w/w and clay: 13%-20% w/w. 
     
     
         5 . The concrete mixture of  claim 1 , wherein the hydraulic binder further comprises monofilament polypropylene fibers. 
     
     
         6 . The concrete mixture of  claim 1 , wherein the hydraulic binder comprises 30-40% w/w cements. 30-50% w/w lime and 20-30% w/w slag. 
     
     
         7 . The concrete mixture of  claim 5 , wherein the hydraulic binder comprises 30-40% w/w cements, 30-50% w/w lime, 20-30% w/w slag and 0.001-1% w/w monofilament polypropylene fibers. 
     
     
         8 . The concrete mixture of  claim 1 , wherein the cements comprise white cement and Ordinary Portland Cement (OPC). 
     
     
         9 . A method of constructing a low carbon emission concrete rigid walkway, comprising:
 shaping, wetting and compacting of local natural ground;   shaping, compacting and wetting aggregate, to produce an aggregate base layer;   poring a low carbon emission concrete mixture over the aggregate base layer to produce a top layer; wherein the low carbon emission concrete mixture comprises: a hydraulic binder, an aggregate mix and water; wherein the hydraulic binder comprises: cements, lime and slag;   curing the top layer to produce the low carbon emission concrete rigid walkway.   
     
     
         10 . The method of  claim 9 . wherein the base layer is in direct contact with the top layer. 
     
     
         11 . The method of  claim 9 , wherein the curing comprises covering the top layer with plastic sheet. 
     
     
         12 . The method of  claim 9 , wherein the curing duration is between 48-96 hours. 
     
     
         13 . A hydraulic binder comprising: cements, lime and slag. 
     
     
         14 . The hydraulic binder of  claim 13 , further comprising monofilament polypropylene fibers. 
     
     
         15 . The hydraulic binder of  claim 13 , comprising 30-40% w/w cements, 30-50% w/w lime and 20-30% w/w slag. 
     
     
         16 . The hydraulic binder of  claim 14 , comprising 30-40% w/w cements, 30-50% w/w lime, 20-30% w/w slag and 0.001-1% w/w monofilament polypropylene fibers. 
     
     
         17 . The hydraulic binder of  claim 13 , wherein the cements comprise white cement and Ordinary Portland Cement (OPC). 
     
     
         18 . The hydraulic binder of  claim 17 , wherein the ratio of white cement and OPC is 1:0.8. 
     
     
         19 . A concrete rigid walkway comprising a base layer of compacted course aggregate and a top layer comprising the concrete mixture of  claim 1 , wherein the base layer is in direct contact with the top layer. 
     
     
         20 . The concrete rigid walkway of  claim 19 , wherein the depth of the top layer is between 5-8 cm.