The whole country is changing from four to eight.，Compaction of widened subgrade is essential，To achieve expressway of the road surface.“High quality、Durability、Long life”，The subgrade must be compacted。“Change four to eight”Widening subgrade compaction“Big Mac”——Power YZZT39 Intelligent Direction-Regulating Vibratory Roller is the latest scientific research achievement of CUHK，Avoid collapse and cracks at joints caused by post-construction settlement，Help you out。
AI Translation Notice: This article was translated from Chinese into English using AI-assisted translation. Original source: http://news.lmjx.net/2022/202209/2022092717193044.shtml. The translation may contain errors, and the original Chinese source should be referred to for accuracy.
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