若何进步欧式瓦的硬度和耐磨性？市政途径施工用欧式瓦的挑选是因为其经久性和耐磨性好。是以，欧式瓦的密度和硬度是权衡其机能的首要身分。也便是说，若是欧式瓦出产商的产物批量硬度较低，就轻易在运输或利用关键中呈现裂痕，减短其现实利用寿命。那末若何进步方形砖的密度和硬度呢？

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