對(dui)于(yu)普(pu)通消費者來說,很(hen)難接(jie)觸到石材(cai),不知道石材(cai)的(de)分(fen)類。很(hen)難區分(fen)鵝(e)卵石和礫石,它們是不同的(de)石頭,有不同的(de)特(te)點和不同的(de)用途,經(jing)常(chang)用于(yu)建(jian)筑工程(cheng),是非常(chang)好的(de)團聚體。
那么(me)(me),鵝卵石(shi)和礫石(shi)好區(qu)分嗎?兩者有什么(me)(me)區(qu)別?
礫(li)(li)石(shi)(shi)(shi)(shi)(shi)給人(ren)的第(di)一(yi)(yi)印象是它(ta)(ta)比(bi)(bi)較(jiao)小,有(you)點雜(za)亂,而(er)礫(li)(li)石(shi)(shi)(shi)(shi)(shi)常常讓人(ren)聯想到水或河流。如果我(wo)們(men)在概念(nian)上(shang)區(qu)分礫(li)(li)石(shi)(shi)(shi)(shi)(shi)和(he)礫(li)(li)石(shi)(shi)(shi)(shi)(shi)的區(qu)別,它(ta)(ta)們(men)比(bi)(bi)礫(li)(li)石(shi)(shi)(shi)(shi)(shi)和(he)卵石(shi)(shi)(shi)(shi)(shi)的區(qu)別更好地劃分。據說(shuo)礫(li)(li)石(shi)(shi)(shi)(shi)(shi)往往棱角(jiao)尖(jian)利,多由(you)山(shan)(shan)石(shi)(shi)(shi)(shi)(shi)風化(hua)破(po)碎(sui)而(er)成(cheng),產于(yu)山(shan)(shan)間;礫(li)(li)石(shi)(shi)(shi)(shi)(shi)是一(yi)(yi)種沒有(you)棱角(jiao)的石(shi)(shi)(shi)(shi)(shi)頭(tou)。它(ta)(ta)是一(yi)(yi)塊(kuai)被海浪和(he)水長期(qi)沖刷磨(mo)光的石(shi)(shi)(shi)(shi)(shi)頭(tou)。它(ta)(ta)產自河流。你(ni)不(bu)需(xu)要仔(zi)細(xi)比(bi)(bi)較(jiao)。看石(shi)(shi)(shi)(shi)(shi)頭(tou)有(you)沒有(you)棱角(jiao),就知道(dao)是哪種石(shi)(shi)(shi)(shi)(shi)頭(tou)了。
從施工特性上(shang)區(qu)分礫石與(yu)碎石的區(qu)別:
碎石(shi)(shi)表面光滑(hua)(hua)無棱角(jiao),但經過多年的(de)水(shui)沖后,其硬(ying)度不(bu)如碎石(shi)(shi),這也決定(ding)了它(ta)在(zai)建筑(zhu)(zhu)中(zhong)是一(yi)種強度較低的(de)石(shi)(shi)頭。此外,由于(yu)(yu)砂(sha)(sha)礫(li)的(de)形狀光滑(hua)(hua),在(zai)施(shi)工(gong)中(zhong)與(yu)(yu)(yu)水(shui)泥(ni)配合(he)使(shi)用(yong)時,砂(sha)(sha)礫(li)與(yu)(yu)(yu)水(shui)泥(ni)漿的(de)黏附性不(bu)如粗砂(sha)(sha)礫(li),導致(zhi)施(shi)工(gong)穩定(ding)性差。例如,在(zai)建筑(zhu)(zhu)工(gong)程(cheng)(cheng)中(zhong)對(dui)強度和(he)承重要(yao)求較高(gao)的(de)地方,就需要(yao)使(shi)用(yong)砂(sha)(sha)石(shi)(shi),禁(jin)止使(shi)用(yong)砂(sha)(sha)石(shi)(shi)。礫(li)石(shi)(shi)硬(ying)度和(he)強度好,棱角(jiao)比(bi)較均勻尖銳,也能與(yu)(yu)(yu)水(shui)泥(ni)緊(jin)密粘結。它(ta)比(bi)砂(sha)(sha)礫(li)更(geng)結實。在(zai)一(yi)些高(gao)等(deng)級混凝土中(zhong),規定(ding)只能使(shi)用(yong)碎石(shi)(shi),還是不(bu)能使(shi)用(yong)碎石(shi)(shi)。事實上,礫(li)石(shi)(shi)與(yu)(yu)(yu)碎石(shi)(shi)、鵝卵石(shi)(shi)的(de)區別主要(yao)是由于(yu)(yu)工(gong)程(cheng)(cheng)中(zhong)它(ta)們(men)與(yu)(yu)(yu)水(shui)泥(ni)的(de)結合(he)力(li)不(bu)同造成的(de)。
從概念(nian)上區分礫石和鵝卵石
一(yi)(yi)般施工(gong)中多使(shi)用(yong)礫(li)(li)石(shi)(shi)(shi)和礫(li)(li)石(shi)(shi)(shi),但也使(shi)用(yong)鵝卵石(shi)(shi)(shi)。因(yin)為鵝卵石(shi)(shi)(shi)、石(shi)(shi)(shi)子都是光(guang)(guang)滑(hua)的(de)(de),與(yu)水(shui)泥的(de)(de)附著(zhu)力不(bu)是很好。礫(li)(li)石(shi)(shi)(shi)和鵝卵石(shi)(shi)(shi)在概念上與(yu)風(feng)化(hua)和水(shui)運影響密切相關。因(yin)此,礫(li)(li)石(shi)(shi)(shi)與(yu)卵石(shi)(shi)(shi)之間(jian)差別不(bu)大(da)。有(you)些大(da)鵝卵石(shi)(shi)(shi)被打(da)碎(sui)成小(xiao)鵝卵石(shi)(shi)(shi)。一(yi)(yi)邊是粗(cu)(cu)糙的(de)(de),另一(yi)(yi)邊是光(guang)(guang)滑(hua)的(de)(de)。這種(zhong)鵝卵石(shi)(shi)(shi)也可(ke)稱碎(sui)石(shi)(shi)(shi),而鵝卵石(shi)(shi)(shi)是表面不(bu)粗(cu)(cu)糙、表面不(bu)光(guang)(guang)滑(hua)、沒有(you)棱角的(de)(de)石(shi)(shi)(shi)頭。