Can this product be used to create a smooth "ramp" between a flat 4 foot wide cement walkway and a 1/4 inch high tiled cement patio?

Thank you for posting your inquiry. DAP Ready-Mixed Concrete Patch is designed, marketed and labeled for use in minor masonry repair. As indicated on the product package label and supporting product literature: "Used to patch small cracks and breaks, or spot level concrete and masonry surfaces such as basement walls, patios, steps, sidewalks and driveways." Based on the information that you have provided regarding your intended application, the use of a traditional dry-mixed portland cement patching product would be the most appropriate choice for your needs. Should you require further assistance, please feel free to follow up directly with DAP’s Technical Customer Service Department at 888-327-8477.