燒結(jié)多孔磚的優(yōu)點(diǎn)
燒結(jié)多孔磚(fired perforated brick)以非粘土、頁(yè)巖、煤矸石或粉煤灰為主要原料,經(jīng)焙燒而成、孔洞率不小于25%,磚內(nèi)孔洞內(nèi)徑不大于22mm.
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