空心砌块是一种薄壁混凝土构件,正确选择所用骨料的最大粒径和颗粒级配,是提高产品质量、节约水泥和降低成本的重要条件。有人从习惯的概念出发,认为在胶骨比(即胶结料用量:骨料用量)一定的条件下,骨料粒径越大,混凝土的强度越高。因此,往往采用粒径较大的骨料。有时砌块的壁或肋厚仅有25～32mm,却用 Hollow block is a kind of thin-walled concrete component. The correct choice of the largest particle size and particle size distribution of the used aggregate is an important condition for improving the product quality, saving cement and reducing the cost. Some people proceed from the concept of habit, and believe that with a certain ratio of plastic to bone (ie, the amount of binder: the amount of aggregate), the larger the aggregate size, the higher the strength of the concrete. Therefore, larger aggregates are often used. Sometimes the walls or ribs of blocks are only 25 to 32mm thick, but