粉煤灰(hui)主(zhu)要替代大量的無機非(fei)金(jin)屬礦物(wu)填料，如碳酸鈣(gai)、高(gao)嶺土(tu)、滑石(shi)(shi)、石(shi)(shi)英、長石(shi)(shi)、硅灰(hui)石(shi)(shi)、石(shi)(shi)灰(hui)石(shi)(shi)、氧(yang)化(hua)(hua)(hua)鋁(lv)、氧(yang)化(hua)(hua)(hua)鎂、氫氧(yang)化(hua)(hua)(hua)鎂、氫氧(yang)化(hua)(hua)(hua)鋁(lv)、白(bai)炭(tan)黑、炭(tan)黑、磷系(xi)阻燃劑等。

　　粉煤灰碾壓混(hun)凝土(tu)

　　與(yu)其(qi)說(shuo)碾(nian)(nian)壓(ya)(ya)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)是(shi)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)的(de)新(xin)品種之(zhi)一(yi)，倒不(bu)如(ru)說(shuo)碾(nian)(nian)壓(ya)(ya)是(shi)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)的(de)施(shi)工(gong)(gong)(gong)(gong)(gong)新(xin)技(ji)術(shu)(shu)。碾(nian)(nian)壓(ya)(ya)的(de)施(shi)工(gong)(gong)(gong)(gong)(gong)方法(fa)(fa)，很早(zao)以前(qian)在(zai)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)路面工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)中就已(yi)使(shi)用(yong)，但是(shi)直到20世(shi)紀(ji)70年(nian)代(dai)在(zai)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)大壩(ba)(ba)工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)和其(qi)他(ta)水(shui)利工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)中應用(yong)之(zhi)后，才(cai)得(de)到發(fa)展。當時使(shi)用(yong)了(le)(le)振動碾(nian)(nian)壓(ya)(ya)機(振動壓(ya)(ya)路機)滾壓(ya)(ya)密實的(de)施(shi)工(gong)(gong)(gong)(gong)(gong)方法(fa)(fa)，突破了(le)(le)傳(chuan)(chuan)統(tong)(tong)的(de)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)筑(zhu)(zhu)(zhu)壩(ba)(ba)方法(fa)(fa)。與(yu)傳(chuan)(chuan)統(tong)(tong)的(de)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)筑(zhu)(zhu)(zhu)壩(ba)(ba)工(gong)(gong)(gong)(gong)(gong)程(cheng)(cheng)相比，碾(nian)(nian)壓(ya)(ya)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)可(ke)以對干硬(ying)性混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)作連續鋪筑(zhu)(zhu)(zhu)施(shi)工(gong)(gong)(gong)(gong)(gong)，可(ke)減少勞動力80%，并(bing)節約大量(liang)(liang)模板(ban)材(cai)料(liao)和基本上不(bu)需(xu)(xu)要(yao)傳(chuan)(chuan)統(tong)(tong)施(shi)工(gong)(gong)(gong)(gong)(gong)中的(de)必需(xu)(xu)的(de)大量(liang)(liang)模板(ban)工(gong)(gong)(gong)(gong)(gong)。澆(jiao)筑(zhu)(zhu)(zhu)速度大約每天碾(nian)(nian)壓(ya)(ya)一(yi)層(30cm)，據實例(li)，一(yi)座(zuo)60m高的(de)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)壩(ba)(ba)體，只(zhi)需(xu)(xu)280個工(gong)(gong)(gong)(gong)(gong)作日即(ji)可(ke)建成。如(ru)用(yong)傳(chuan)(chuan)統(tong)(tong)方法(fa)(fa)施(shi)工(gong)(gong)(gong)(gong)(gong)，則需(xu)(xu)560～840個工(gong)(gong)(gong)(gong)(gong)作日。粉(fen)(fen)煤灰(hui)磨機是(shi)粉(fen)(fen)煤灰(hui)粉(fen)(fen)磨設備的(de)一(yi)種。此外，碾(nian)(nian)壓(ya)(ya)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)施(shi)工(gong)(gong)(gong)(gong)(gong)不(bu)需(xu)(xu)要(yao)纜車、大型起重機等(deng)設備，所有運輸作業都可(ke)在(zai)壩(ba)(ba)上鋪筑(zhu)(zhu)(zhu)層頂面進行。20世(shi)紀(ji)70年(nian)代(dai)早(zao)期推廣的(de)碾(nian)(nian)壓(ya)(ya)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)施(shi)工(gong)(gong)(gong)(gong)(gong)使(shi)用(yong)貧混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)，發(fa)現即(ji)使(shi)在(zai)碾(nian)(nian)壓(ya)(ya)條件下，膠(jiao)凝(ning)(ning)(ning)材(cai)料(liao)用(yong)量(liang)(liang)顯(xian)得(de)不(bu)足(zu)，雖已(yi)采取摻加20%～30%粉(fen)(fen)煤灰(hui)，仍嫌不(bu)足(zu)。近(jin)年(nian)碾(nian)(nian)壓(ya)(ya)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)的(de)施(shi)工(gong)(gong)(gong)(gong)(gong)技(ji)術(shu)(shu)和粉(fen)(fen)煤灰(hui)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)的(de)材(cai)料(liao)技(ji)術(shu)(shu)相互(hu)結合，終于取得(de)了(le)(le)更(geng)先進的(de)技(ji)術(shu)(shu)進步，這就是(shi)“高粉(fen)(fen)煤灰(hui)用(yong)量(liang)(liang)混(hun)(hun)(hun)(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(tu)(tu)(HFCC)”新(xin)技(ji)術(shu)(shu)。

　　現在碾(nian)壓混凝(ning)土的使用范圍(wei)不斷擴大，而且碾(nian)壓設備也不一定要用振動碾(nian)壓機(ji)。

　　我國水利工程部門，在(zai)筑(zhu)壩工程中首先推廣應(ying)用碾壓粉煤灰混(hun)凝土(tu)施工技術，效果十分顯著。公路(lu)部門現在(zai)也已通過(guo)公路(lu)試驗路(lu)面(mian)施工，在(zai)道路(lu)工程中推廣應(ying)用碾壓粉煤灰混(hun)凝土(tu)。

　　山東(dong)埃爾(er)派粉(fen)體科技有限公(gong)司粉(fen)煤灰專用分(fen)(fen)(fen)選(xuan)機(ji)，處理量大，單機(ji)設計最大產能可(ke)(ke)(ke)(ke)達250-300t/h，分(fen)(fen)(fen)級粒(li)度調整方便，分(fen)(fen)(fen)級電機(ji)采用變(bian)頻器控(kong)制(zhi)，產品粒(li)度45μm篩余量可(ke)(ke)(ke)(ke)在(zai)5-25%之間任意(yi)可(ke)(ke)(ke)(ke)調，分(fen)(fen)(fen)選(xuan)效率(lv)高(gao)，對于流(liu)動性好的物料可(ke)(ke)(ke)(ke)以達到80%以上(shang)，結構緊湊，投資省，能耗(hao)低，與(yu)外置風機(ji)組成(cheng)閉路循環，簡化工藝(yi)，降低了投資與(yu)裝機(ji)容量。耐磨(mo)損，使用壽命長。分(fen)(fen)(fen)選(xuan)機(ji)內部(bu)風速(su)較高(gao)的易(yi)磨(mo)損部(bu)位(wei)采用陶瓷內襯，分(fen)(fen)(fen)級轉子采用耐磨(mo)合金(jin)材(cai)料，智能控(kong)制(zhi)，操作簡單，一(yi)鍵啟動，操作工人只需(xu)簡單培訓即可(ke)(ke)(ke)(ke)上(shang)崗。

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