Polymer cast-in-place diamond tactile paving is a continuous tactile surface made by pouring inorganic high-strength polymer material combined with specialized molds onto existing road surfaces. It is divided into two types: guidance strips and warning dots. Standard widths include 300mm, 400mm, 500mm, and 600mm, with custom sizes available based on actual needs. It forms a permanent bond with asphalt concrete or cement concrete base layers, offering wear resistance, anti-slip properties, stain resistance, and synchronous expansion and contraction with asphalt pavement.

II. Construction Process and Operating Methods

Polymer cast-in-place diamond tactile paving is a new tactile paving technology that can be constructed on-site over traditional black asphalt concrete and gray cement concrete pavements.

2.1 Construction Process

Base layer inspection - Base layer cleaning and treatment - Layout marking - Tape application - Base leveling and mortar spreading - Mold placement - Filling with diamond tactile paving mortar - Leveling and finishing - Curing to specified time - Surface cleaning - Application of sealant for surface sealing - Drying and curing - Inspection - Opening to traffic - Final acceptance.

2.2 Construction Equipment and Tools

The construction process for diamond tactile paving is relatively simple, requiring only the following equipment and tools: one mixer, one disperser, several tactile paving molds, one material transport vehicle, rolling rollers, specialized toothed rubber squeegees and flat rubber squeegees, one high-power blower, one generator, brooms, and other general equipment and tools.

2.3 Construction Personnel

One team leader and 5-6 construction workers per team.

2.4 Construction Preparation

4.1 Review drawings and layout marking

Carefully review construction drawings and verify positions on-site one by one. Mark points and apply tape if necessary.

4.2 Material inspection

Polymer cast-in-place diamond tactile paving is an on-site, multi-process, multi-material coordinated construction method for ground surfaces. Before construction, material consistency and compatibility must be checked in advance. Emulsion materials should show no significant skinning, clumping, or abnormalities; powder materials should be free of clumps. 2.4.3 Trial mixing and sample preparation

Different base layers and environmental conditions can affect the curing time of polymer diamond tactile paving. Therefore, before formal construction, on-site調(diào)試 should be conducted strictly according to the mix ratio and methods set for batch operations. Batch operations can only proceed after ensuring no obvious defects in curing.

2.4.4 Base layer conditions and treatment

The base layer should be堅固, clean, and free of issues such as bleeding, loose dust, delamination, or aggregate loss on asphalt concrete surfaces.