1. Blindly Pursuing Larger Tonnage/Higher Energy Levels, Ignoring Working Condition Matching
Many purchasers believe that larger models and higher tonnage result in better compaction. However, using large-tonnage models for small projects not only significantly increases procurement, fuel, and transportation costs but may also lead to difficulties in steering in narrow spaces and damage to surrounding structures. Conversely, high-energy impact rollers, if paired with an insufficiently powered tractor, may experience problems such as the impact wheel failing to lift properly, resulting in a sharp drop in operating efficiency and failing to fully utilize the equipment's performance.
2. Focusing Only on Vibration Force Parameters, Ignoring Other Core Indicators
Many people only focus on the "maximum vibration force" value when purchasing, neglecting key parameters such as amplitude, vibration frequency, and static pressure. For example, a 12-ton road roller with a smaller amplitude may not achieve the same compaction depth as an 8-ton model with a larger amplitude. Asphalt pavement construction requires a high-frequency, low-amplitude vibration mode; simply using high vibration force can actually crush the asphalt aggregate and damage the pavement structure.
III. Ignoring Construction Material Types and Mismatched Roller Models
Different construction materials have vastly different requirements for the compaction characteristics of road rollers. Selecting the wrong model will directly lead to substandard construction quality. For example, using a regular single-drum roller for asphalt pavement easily leaves obvious wheel marks, affecting smoothness; using a pentagonal impact roller for cohesive soil or collapsible loess results in insufficient impact force to effectively break down the soil's pore structure, failing to achieve deep compaction requirements.
IV. Completely Ignoring Site Space and Lack of Mobility
In confined spaces such as trench backfilling, community road repair, and narrow mountain roadbeds, blindly selecting large-tonnage ride-on rollers will result in problems such as excessively large turning radii and inability to cover corner areas, requiring additional small hand-held equipment for supplementary work, which slows down the overall construction period. Conversely, using small road rollers for large open areas results in extremely low operating efficiency and cannot meet the construction schedule requirements.
V. Focusing solely on appearance when purchasing used equipment, neglecting core hidden dangers. When buying used road rollers, many people only look at whether the paint is new and the price is low, ignoring core structural damage such as worn impact wheels, cracked frame welds, and oil leaks in the hydraulic system. This easily leads to buying refurbished or over-rated machines, resulting in frequent repairs, project delays, and doubled maintenance costs.
VI. Confusing the applicable scenarios of different wheel shapes. The characteristics of triangular, quadrilateral, and pentagonal impact rollers differ significantly, leading many buyers to choose arbitrarily: for example, using a pentagonal wheel for deep compaction of high fills is insufficient to achieve a compaction depth of over 1 meter; using a triangular wheel for crushing old concrete pavements is too forceful, easily loosening the base layer and affecting subsequent pavement stability.
