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Next was an experimental study on modification of stone ballast concrete small hollow block. 最后進行石渣砌塊填充墻（模擬）的改性試驗研究。
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效。
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念、壓塊設(shè)計和壓裝等幾個問題。