砂(sha)巖(yan)(yan)壁畫的泥砂(sha)巖(yan)(yan)還具有(you)類似塑料的塑變性(xing),更(geng)適合雕(diao)刻和切出(chu)10mm厚的薄(bo)板,關(guan)于砂(sha)巖(yan)(yan)輕微的塑變性(xing),現普遍認為是(shi)SiO2之間分子聯(lian)結,卻又(you)未形成(cheng)結塊的緣故。砂(sha)巖(yan)(yan)的吸(xi)水率很大,一(yi)些品種(zhong)幾(ji)乎是(shi)將水倒上即滲入石材內(nei),砂(sha)巖(yan)(yan)因其內(nei)部構造(zao)空隙(xi)率大的特性(xing),都(dou)有(you)吸(xi)聲、吸(xi)潮、防火、亞(ya)光的特性(xing),這種(zhong)特性(xing)的品種(zhong)裝(zhuang)飾(shi)到具有(you)吸(xi)聲要(yao)求的影劇院、體育館(guan)、飯店等(deng)公(gong)共場所效果十分理想,甚至可省去(qu)吸(xi)聲板和拉(la)毛(mao)墻。