您绝对不应将天然石阶置于沥青上，因为它会与温度扩大和收缩并在其上方移动石头
因此，在将天然石头放在顶部之前

您切勿将石头铺在沥青上。
沥青会扩大并收缩加班，从而导致石头移动，因此不会粘结到地板上。
天然石材也不应放在水泥床上，我会以3：1的比例使用石尘和石灰推荐NHL 3.5液压石灰砂浆。但是，如果我坦白说，听起来您需要专业人士来完成这项工作，如果您希望以合理的标准完成这项工作。

In response to hertstone and Jb masonry,please research before you give wrong advice.Thermal movement in construction is a good place to start.You don’t say weather it’s internal or external.most materials can be bonded but the amount of expansion and contraction needs to be factored in.expansion joints for example.Most big modern building construction consists of a steel frame and cladding and is fixed so the building can flex.There are a lot of products on the market for bonding materials,low modulas mastics and flexible adhesives are probably your best option and possibly use ditra matting and it should be fine as these products are designed to overcome problematic substrates .the pointing all depends on the stones.do some research but you’re best getting a professional in .it’s worth every penny you only get 1 chance to get it right.laying on just stone dust and lime will 100%shrink and fail.if you are going to use mortar it should be a clean well graded sand which means it contains aggregates of all different shapes and sizes so they lock together.never just stone dust!Jb look into historic mortar