讨论了气孔率、体积密度和常温耐压强度与电熔氧化镁加入量之间的关系。
The porosity, bulk density and cold crushing strength of the refractory samples were determined.
试验结果表明，在配料中加入适量混合稀土氧化物对提高耐火制品的常温耐压强度和热震稳定性能是有益的。
The results show that a certain amount of the mixed rare earth oxide content in the batch can increase the cold compression strength and the thermal shock resistance of the bricks.
制得高强度耐火粘土砖的试验结果表明：浸渍处理后的试样，常温耐压强度均获得了不同程度的提高，体积密度增加，气孔率下降。
The result shows that the compressive strength at normal temperature of impregnated samples is raised in varying degree, their bulk density is increased and the porosity is decreased.
制得高强度耐火粘土砖的试验结果表明：浸渍处理后的试样，常温耐压强度均获得了不同程度的提高，体积密度增加，气孔率下降。
The result shows that the compressive strength at normal temperature of impregnated samples is raised in varying degree, their bulk density is increased and the porosity is decreased.
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