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1、第21卷第3期礦冶Vo1.21,No.32012年9月MINING&ME,rALLURGYSeptember2012文章編號(hào):1005—7854(2012)03—0012—04金川粗骨料級(jí)配與強(qiáng)度分析張磊喬登攀程緯華張國龍侯國權(quán)(昆明理工大學(xué),昆明650093)摘要:通過對(duì)粗骨料級(jí)配的研究與應(yīng)用現(xiàn)狀分析,指出可應(yīng)用泰波(Talbo1)法對(duì)礦山粗粒級(jí)充填骨料的級(jí)配進(jìn)行分析和優(yōu)化,并對(duì)金川礦區(qū)破碎廢石集料和戈壁粗砂的級(jí)配進(jìn)行了分析。強(qiáng)度正交試驗(yàn)表明:相同水泥用量和質(zhì)量濃度條件下,骨料的堆集密實(shí)度越大,則試塊強(qiáng)度越高。相同水泥用量條件下,隨水灰比的減小,試塊強(qiáng)度顯著
2、增大。相同濃度條件下,灰砂比越大則強(qiáng)度越高?;旌瞎橇吓c單一骨料比,隨水灰比增大,強(qiáng)度并沒有因水泥用量減小而急劇降低,因此骨料級(jí)配對(duì)強(qiáng)度的影響非常明顯,需要優(yōu)化灰砂比。關(guān)鍵詞:粗骨料;級(jí)配;充填骨料中圖分類號(hào):TD853.34文獻(xiàn)標(biāo)識(shí)碼:Adoi:10.3969/j.issn.1005-7854.2012.03.004ANALYSISONGRADATIONANDINTENSITYOFCOARSEAGGREGATEOFJNMCZHANGLeiQIAODeng-panCHENGWei-huaZHANGGuo-longHOUGuo—·quan(Kunmingunive
3、rsityofscienceandtechnology,Kunming650093,China)ABSTRACT:Basedontheresearchandapplicationstatusanalysisofconcreteaggregategradation,itispointedoutthattheTalbolmethodcanbeappliedtocarryontheaggregategradationanalysisandoptimizationofminecoarsefilling,andananalysisiscarriedontothebrok
4、enwasterockaggregateandtheGobicoarsesandgradationoftheJinChuanminingarea.Accordingtotheintensityorthogonaltest,theresultsshowthat:underthesamecon—ditionofcementdosageandconcentration,thebiggertheaggregateaccumulationdensityis,thehigherstrengthoftestblockis.Andundertheconditionofsame
5、cementdosage,withthedecreaseofwatercementratio,thestrengthoftestblockincreaseobservably.Undertheconditionofsameconcentration,thebiggerthesandratiois,thehigh-erstrengthoftestbockis.Comparedwithsingletypeofaggregate,withtheincreasingofwatercementratio,thestrengthofmixtureaggregatedoes
6、notdecreasedramaticallyduetothecementdosagedropping,thustheimpactofaggregategradationtothestrengthisveryobservantandthecementsandratioshouldbeoptimized.KEYWORDS:coarseaggregate;thegradation;fillingaggregates粗骨料膠結(jié)充填新技術(shù)是按照礦山充填的工藝距離輸送困難和用水量大的技術(shù)關(guān)鍵,使其系統(tǒng)投和技術(shù)特點(diǎn)發(fā)展起來的,在配合要求和制造工藝方資和成本顯著降低。金川礦
7、山今后廢石量將超過面大為簡化。一般采用自然級(jí)配的碎石或塊石料作130萬t/,年。廢石外排不僅會(huì)大大影響到礦山周邊為充填集料,采用自淋混合工藝設(shè)備充填混合料,并區(qū)域的生態(tài)環(huán)境,也是礦山生產(chǎn)中的沉重負(fù)擔(dān),因?qū)崿F(xiàn)集料與漿料分流輸送,解決了粗粒級(jí)充填料遠(yuǎn)此,研究粗粒級(jí)廢石破碎集料與全尾砂混合高濃度料漿自流充填技術(shù)非常重要,對(duì)金川I粗骨料級(jí)配與收稿日期:201l_12-o8強(qiáng)度分析就成了當(dāng)務(wù)之急¨。作者簡介:張磊,工學(xué)碩士。張磊等:金川粗骨料級(jí)配與強(qiáng)度分析率,根據(jù)實(shí)用實(shí)積率就可計(jì)算得出各級(jí)集料的分計(jì)1混凝土骨料理想級(jí)配研究現(xiàn)狀篩余百分比,已經(jīng)提出的級(jí)配算法中大多數(shù)只適用
8、混凝土界,骨料是粒形的材料,通常不具有