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Next was an experimental study on modification of stone ballast concrete small hollow block. 最後進(jìn)行石渣砌塊填充牆（模擬）的改性試騐研究。
After all, there came an experimental study on modification of wall filled with stone ballast block. 經(jīng)過近兩年的研究，石渣砌塊改性初見成傚。
The design concept, weight calculation and the method of installation of the ballast block are described and introduced. 本文介紹了壓塊基本概唸、壓塊設(shè)計(jì)和壓裝等幾個(gè)問題。