一、日本对骨料的分类
日本将骨料分成五大类：砾石、天然砂（河砂、陆砂、山砂和海砂）；碎石和碎砂；混凝土用石灰石；人工骨料（以高炉炉渣、粉煤灰为主要原料）；再生骨料（以建筑垃圾为主要原料）。按照颗粒度的大小，分为粗骨料（5mm网筛，85%以上停留）和细骨料（5mm网筛，85%以上通过）。
日本骨料行业发展概况
2021-07-06 10:49:24
日本骨料70%用于混凝土，30%用于道路和道床，1990年达到需求顶峰，此后一路下降，2020年为需求顶峰之后的历史最低。
Correlation
CEMPI
133.08
+0.03 +0.02%
CONCPI
112.47
+0.35 +0.31%
CLKPI
139.58
+0.95 +0.69%
SPPI
50.39
+0.10 +0.20%
MORPI
80.43
+0.04 +0.05%
Recently, due to the persistent cost pressure in the south, the price of concrete has risen slightly with the raw materials, but the growth of market demand is limited, and the overall quotation is still stable. From October 31 to November 6, the national concrete price index closed at 112.47 points, up 0.31% annually and down 10.11% year-on-year.