砼铺路块密实度的研究及其实用价值孙祖耀（江苏省常熟市建材局）密实度是砼的重要物理性能，同样也包括硅铺路块在内的所有砼制品的一项主要物理性能。密实度虽然不作为硅制品一项质量指标，但它几乎与所有主要技术性能有密切的关系。例如强度、抗冻性、不透水性、耐久性... Density of concrete paving block and its practical value Sun Zuyao (Changshu City, Jiangsu Province Building Materials Bureau) Density is an important physical properties of concrete, but also includes all the concrete products, including the one of the main pavement performance of silicon paving blocks. Although not a measure of the quality of silicon products, but it is almost all the major technical performance are closely related. Such as strength, frost resistance, impermeability, durability ...