Testing Rapidcrete HD for Shotcrete Delivery

CPD建筑产品公司目前生产一种名为Rapidcrete HD的产品，这是一种快速凝结、高强度的浇头和修补材料，由特种预混合、高强度、耐磨骨料和快速凝结水泥组成。这种混凝土的问题在于，在地下采矿行业，当工人必须为矿山隧道底板搅拌和浇筑混凝土时，时间非常宝贵，产量有限。将Rapidcrete HD作为喷射混凝土，也称为喷射混凝土，可以为CPD及其行业合作伙伴提供节省时间的解决方案。**在采矿业中，喷射混凝土被用作地面支撑的主要手段，将其喷洒到地下隧道的背面和墙壁上；在业内被称为漂流。喷射的力量将空气从混合物中挤出，使其比传统浇筑的混凝土更致密。此外，喷射混凝土可能是最有效的混凝土安装方法，它不仅在结构上优越，而且在形状、尺寸和用途上都是无限的。CPD面临的挑战是，虽然这种新型骨料在传统上用于工厂、仓库、装货码头、冷库、采矿行业的进路垫和漂流区的混凝土地板时效果良好，但当它高速喷涂在表面时，效果如何尚不清楚。如果Rapidcrete HD作为喷射混凝土产品被证明是可行的，它将为采矿行业的CPD开辟重要的机会。

CPD Construction Products currently manufactures a product known as Rapidcrete HD, which is a fast setting,**high strength topping and patching material consisting of specialty pre-blended, high strength, and abrasion**resistant aggregate and rapid setting cement. The problem with this concrete is that, in the underground mining**industry, time is at a premium and production is limited when workers have to mix and pour concrete for mine**tunnel floors. Delivering Rapidcrete HD as sprayable concerete, also known as shotcrete, could provide CPD and**its industry partners with a time-saving solution.**In the mining industry, shotcrete is used as a primary means of ground support by spraying it onto the back and**walls of an underground tunnel; known in the industry as drifts. The force of the spray knocks the air out of the**mixture, making it denser than conventionally poured concrete. Moreover, it is arguable that shotcrete is probably**the most effective method to install concrete that is not only structurally superior but limitless in shape, size and**use.**The challenge confronting CPD is that, while this new aggregate works well when traditionally poured for concrete**floors in factories, warehouses, loading dock areas, cold storage rooms, and approach pads and drifts in the**mining industry, it is unclear how it will work when sprayed on a surface at high velocity. If Rapidcrete HD is**proven viable as a shotcrete product it would open up significant opportunities for CPD in the mining industry.