| 摘要 |
The construction 10 comprises a stone upper layer 12, a stiff bound lower layer 14 and a bonding layer 16 between the upper layer and lower layer. The stiff bound lower layer 14 comprises a compacted hydraulic bound mixture of aggregate or soil bound using a low energy hydraulic binder. The stone upper layer comprises plurality of stone elements 20 arranged with joints 26 therebetween and a joint filling material arranged in the joints which acts compositely with the stone elements to form a continuous surface layer. The low energy hydraulic binder may comprise an alkali-activated pozzolan, for example a blend of pulverised coal fly ash and Portland cement. The pulverised coal fly ash may be high alumina siliceous coal fly ash. The joint filling material may be mortar and the bonding layer may comprise a fine concrete. A method of constructing a stone paving is also claimed. |
