Nghiên cứu ban đầu về khả năng tái sử dụng hạt nix thải

Tgp chi Khoa hoc - Cong nghe Thuy sdn So 1/2016 THONG BAO KHOA HOC NGHIEN CU'U BAN DAU VE KHA NANG TAI SU" DUNG HAT NIX THAI I.MTIAL RESEARCH ON ABILITY TO REUSE NIX GRAIN WASTE Nguyen T/idngXiem', Trdn Dodn Hiing^, Mai Nguyin Trdn Thanh' NgjvnhJnbji :!5 S 201 ? Ny,n\ pliart bion ihong qua l7/9,'20!5 Ngay duyel dany IS 32016 T6MT\T \gay nav viec tai su dung eac san phdm lir vdt lieu thai cdng nghiep dimg lam pint gia cho bi long cd the lam tdng linh ben virng clio ngdnh cdng nghiep xd\ diriig Trong bat bdo ndy khd ndng sir dung hai nix ilia, (\Clil nhu Id ci>! biu Urn uong bi tdng da dirac kiim tra thdng epia thuc nghiim Tiiu cinidn pha trdn xva vd be umg mdc M4t)0 dd dirac su dung di pha iron hdn hop Nghien ciru dd dua anh huang cua NGW den ca imh kha ndng ihdm nirdc ddnh gia muc ddc hai ddi vat sire khde ngirai vd moi Dirdng klu su dung san phdm be long lu \GW B, • idng duac Ihu nghiem c irimg dr) o 14 28 vd 90 ngdv sau diic San phelm cdl heuloniir \C,\\ co hd su ,g them c de chdt \ iic tde vd phu gia lang dio Tir khe>a hai ni.\ the,I, M mdngPonland cdt lieu tlid bi long, ctrimg chiu nin \BS TR \CT \'oiyadays die leie ol waste malenals and industrial by-products ui eoiierete could increase the sushiinabibtt of the consii etum indusin, In this paper the potential oj using ncx grain waste (NGW) as coaise aggiegaie in cemiiele ixa expei imentally investigated The guide mortar and ccmcrete M400 was used for I design The lesean h has shewx n out the effect oj NGW on llie senglh pioperlies water permeability and dung nu'oc ngam bi nhilm nix cao Hien nay, viec quan ly bai thai chi mang tinh tam thai la xay tu-ang gach xung quanh va ben du-ai xay lap be tong, ben tren chi dung cac tam ton xi mang de che phii (hinh 1) ã^*'""- -=~'" -"ô / 21,16 Hinb I Bai chna N G n a„ac phu bSng Ion \ i mang chiip lir google va tirerng bao hang gach (phaiDdiTffccbupngav 12'20IJ Tuy sir dung cac bien phap nhu- tren nhimg trpi mu-a thi mot lirong Idn NGW theo ddng chay ngim vao dit va cay eii gay tinh trang nhiim nguin nuoc moi trir-ong va la tiSc nhan gay ngd doc Niu kh6ng xir iy kip thdi thi li^gng chit thai se t i n dong mdt bai chit thai rit Ion va ed gid thi bui chit thai bay theo gay anh hu-ong d i n sue khoe d i i vdi im cir »a m6i truong xung quanh khu vuc nha may Nhieu nam qua, mac d i cp nhiiu du- an va de tai nghien ciru thir nghiem tiSi su- dung NGW nhu dung d i phii tron be long trpng cac cpng trinh xay du-ng, nguyen lieu phu gia Irpng cong nghiep siSn xuit xi mang, dung Ihay t h i cat hoac mat da be tdng nhua tJfftng hay lam vat lieu diic cac c i u kien be long ngan xpi Ip bc> biin, c l u cang [2-4] Tuy nhien hiu hit ciSc giai phap d i u diing h i n hop NGW dh thay eat, theo tac gia la kh6ng hop ly dp hen hop CP nhiiu s i t vun va kim loai nang se nil len b i mat qua trinh Ir6n, ding Ihdi xi mang thong thu-dng khong bao phu hit HfPC cac chit ddc hai nhu- chi, asen va cac hdp chat hO-u eo se gay hai d i n si>e khde ciia ngudi Vi vay rit kho viec tai suOijng ehiing va dp la nguyen nhan khdng t h i P-ng diing chung vap thuc t i cua nhiiu d i tai nghien cu-u truoc day llin hanh nghien ciru sir dung NGW cua nha may HVS d i c h j tap cit lieu Idn cap phii be tong Bai bap tap trung nghien ciiu anh hupng cua hinh dang, kich thu-pc viS phu gia d i n cp tinh cua opt lieu Ion va be tong Dong ihpi, danh gia mue ddc hai cua san phim din sil-c khie Cdn ngu-oi theo Quy ehuln ky thual quoc gia v i chit luong nudc mat, nuoc ngim, nu-6c ven bd va nuoc thai cdng nghiep Day la mot vin d i thuc su cd y nghia khda hoc thu-c tien cap thiit, budc dau chung toi cdng da thu duoc mdt s i kit qua tuong d i i kha quan II VAT LIEU VA PHLt-CTNG PHAP NGHieN ClXl Vat lieu ' ' Tlhh chat vat ly va hoa hoc cua hat nix truuc va sau si,- dung a) Tinh chit vat ly cia hat nix (NG) va sau SIJ' dyng (NGW) NG lis vat heu cd dang hat cau tu sat, aa v6i va oxit sillic (SiO,) qua trinh luyen a6ng Trong qua tnnh tmh luyen ding linh khiit ndng chay nim dirpi day b i trdng ao cd Idp khdng tmh khiel npi tren b i mat ngudi ta gpi la xi Sau NG du-o-c hmh ddt ng6t a6ng k i t (bang cach su- dung cac bien phap cpng nghiep, nu-dc biin hpac lam mat bang khdng khi) tu trang tha, ndng ehay va Thiy duoc v i n d i va tren co sd phan lich dac tmh hoa ly cua hat nix, chung tci da sau dd duo-e rua bang nude ap luc eao (xem hinh 3a| [5] TRl/OflG OAI HOC NHA TRANG US Tiipch: ishod iioi - Cong nghe Thin san Hinh Hinli dang So i.'20i6 NG (a), NGW Iheo dong chay ngam vao dat (b) a NGW phong dai 35 lan (c) Trong qua tnnh sua chij'a va dong moi tau thuyen, HVS da su dung NG 66 lam sach cac vet b3n bam tren be mat than tau Qua tnnh da phai tan mot lu'ong Ian bui kim Bang Cac tinh ch4t vat ly ciia hat nix Cac tmh chat atly loai nang vao khong va d§ dang ngdm vao nguon nu-oc nhu' hinh 2b Cac tmh chat vat ly ciia NG va NGW du-gc the hien ii bang triPffc va sau ktii sif dung [13-^27] NG Hmh dang Mau sac NGW Khong deu (sac, nhpn) Hat hai tron den goc cgnh Den sang Den va mpt so mau khac MUI Khong mui Co mill Nhiel nong chay 1250^C 1250°C Do phat tan kim loa nang Khong vu-ot qua mirc quy dmh 43 % Vu'at qua mirc quy dmh , Trong krong neng 90 57 ' Mb dun dp Ion cua h a f 45 2,12 Ty le phan tram l6 r6ng Do cu'ng 41 % ( - ) Mohs Dp hoa lan ni, o c Khong tan Khong tan Dp hut nu'oc (03-04) % (03-04) % Dg am % 09 % 02% 30 % ; Ham lu'O'ng bui ban a NG va NGW dam: tmh Ihong qua vi^clinh lus/ng sot neng bi$t va lich IOy duvc m6 tS O bing Bang Mo dun dp lan cua NG va NGW NG chuin Imm] 5,0 NGVV iir^ng sol Lirong sot neng iu-crng sot tich tren sang [g] biil [%I IOy [•/.! Lii.9.ng s6t tren Ltro-ng sot rieng sang [gJ bilt [%] Lirong s6t tich my [%l 0 0 0 0 25 21 4,2 4,2 1,25 0,63 98 19,6 23,8 89 8.9 8,9 161 32,2 56 362 36,2 45,1 0,315 37 7,4 63,4 272 27,2 72,3 014 170 34,0 97,4 136 13,6 85,9 Scttpm 13 2,6 100 141 14,1 100 •ih IRUONG DAI HOC NHA TRANG Mo dun dd 16n cia NG 4.2 + 238 + - - ^ - 100 Mo dun dd Ion cua NGW 8.9 + 45.1 + 2 - b) Tinh chat hda hoc eua NGW Hat nix sau s i , dung cd them mdt sd nguyen td sau C n i u co As Cr Ni , „ „ ' chat ban, sat vun va mpt s i kim Ipa, nang khac (bang 3) '"" "° ,^^'^l±y^lP> trin if (au col litu ItVii 2 Phuvng phap phan tich mau nuvc cac miu be tong co NGW du-oc ngam Cac miu hat nix, miu MWG nung tren 1000 C, miu vD-a cb NGW, miu vu'a boc bing geopolymer, miu be tdng khdng cb NGW va m i u nu'oc c3t co pH = 6,5 giong nhU" nu'iyc \tju Mau NGW nung Miiu Vila c6 NGW NGW mu'a vol thai gian tuin Quy trinh thi nghiem du'ac trinh bay hinh nhu- sau: t Mau be long khong c6 NGW Mau be idng c6NGW I Ngamimngmiucw J i Phan If „an Hinh Phirmit; phap phan tich n TRUONG DAI HOC NHA TRANG Mdy AGILENT 77Q0xLC- ICP-MS Lay 500 g NGW va 500 g NGW sau cdt lieu idn va phu gia cho cac me trdn be tdng de dat eac ehi tieu ky thuat Sau dd kiim tra dd sut cia hdn hop be tdng va diiu chinh thisnh phan vat lieu si hin hop be tdng dat dd sut Tiep theo hin hdp vap khudn due cd kich thirdc (150 X 150 X 1501 mm va dua Iron tieu chuan TCVN 3105 1993 [8] Sau dd h i n hop vac khudn xong eho khudn ien ban ning cho tdi thoat hel bot Ion va h i xi mang n6i deu, ril dimg bay gat bd hdn hop thira va xoa phing mtst m i u Tiip theo cac m i u duoc p h i am khudn p nhiet phpng 72 gid, sau dd thad khudn rii tiip tuc ngam dirong hd miu d ni/oc eho d i n thir miu (hinh 6] hungJOOO.C ngam 2,5 lit niroc cit Lay mau vda ed hat nix thai cp kich thudc (40 X 40 X 160) mm cd khii luong rieng la 2,24 g/em= ngam trcng lit ni/dc c i t Cac mau be tdng ed va khdng cd NGW cd kieh thi,de (150 X 150 X 150) mm, cd kh6i lirong 7,9 kg 3,5 lit nu-dc c i l Nirdc ngam cae loai mau duoc liy phan tich sau tuan va dung miSy khii p h i phat xa plasma phan irng cao t i n ICP-MS 2,3 Che tao be long theo mac M400 Tn/de trdn be t6ng c i n xac dinh chi-nh xac cap Phil be t6ng, nghTa la tim ty le hop ly cap Ipai nguyen vat lieu nuoc xi mang, cat Xl m a n s I Phoi iron Irons In ph r ~ ~ ~ ~ [ Oododeoh6nhgp T , o ,iuam> kinh ^ Dung cu cu,d,1uam! kinh d,is iren uUhiiu ao Idn lu,n Id OlOO rr, O20O 02U [-.rdcm, S Chlonde-lon Pcneirability and Mechanical Analysis of High Strenglh Concrete with Copper Slag, Joumal ol Engineenng Research and Applications, 2014 Volume 4, No -• Mobasher, B Effect of copper slag on the hydration of blended ccmeniitious mixtures Materials Engineenng Conterence Malenali for the New Millenium, 1996 ,o Alnuaimi, A Effecb of Copper Slag as a Replacement for Fine Aggregate on the Behavior and Ultimate :Mrenglh o! Reinforced Concrete Slender Columns TJER, Volume No 2012 ''' H'^^T,'; f ' ''™"°'' ^^'^' S'^'^^^i""^ of Copper Slag Filled Short Bamboo Fiber Reinforced Epoxy Composi.es l A t i l l IntemaiionalJoumalofEngineenng and Technology Vol 6, No 2,2014 20 Pa.n.i,k B An Expcnmental In^est,ganon on Optimum Usage of Copper Slag as Fine Aggregate in Copper :.ugAamixed Concrete Inlemational Journal of Current Engineering and Technology, Volume 4, No 5, 2014, - ScU , T, Expenmenial Study on Concrete Usmg Copper Slag as Replacement Material of Fine Aggregate Civil 6: Lnvironmental Engineenng Volume 4, No 5, 2014 22 M Fadaee Invest.gaiion on using copper slag as pan of eementitious material m self compacting concrete, Asian jou-nai ol ciMl engineering Volume 16, No 3, 2015 2} marku J , Opiimization of copper slag waste content m blended cement production Zastila matenjala Volume r;.r,.'ri!"'"^''ir T ' ™ °" ''"''^^'"'" °^ ^°PP" slag m geotechnical applications Proceedings of Indian (jLOtechnical Conlercnce, 2011 Pundhir .S , Use of copper ilag eonstniction material in bituminous pavements Joumal of Scienlific & Indusinal Research, Volume 64 2005 '^' \ppiicd tnnL"'QSciences ^ ' ' "' Volume v T " " ' '3, ' ' ^\ o'"12, ™2014 " " " ' '""^"^^"^"^l Jo'-'^a! of Advanced Research in Engineenng and " l ' ; ' m ' " ' i " " " " " " " "f,"""" ''»8 •"•1 discarded nibbcr lyras in conamction International joumal of civil aad ^iniiiurdl engineenng Volume No 2, 2012 'U TRUaNG OAI HOC NHA TRANG ... i t (bang cach su- dung cac bien phap cpng nghiep, nu-dc biin hpac lam mat bang khdng khi) tu trang tha, ndng ehay va Thiy duoc v i n d i va tren co sd phan lich dac tmh hoa ly cua hat nix, chung... bui kim Bang Cac tinh ch4t vat ly ciia hat nix Cac tmh chat atly loai nang vao khong va d§ dang ngdm vao nguon nu-oc nhu'' hinh 2b Cac tmh chat vat ly ciia NG va NGW du-gc the hien ii bang triPffc... b) Tinh chat hda hoc eua NGW Hat nix sau s i , dung cd them mdt sd nguyen td sau C n i u co As Cr Ni , „ „ '' chat ban, sat vun va mpt s i kim Ipa, nang khac (bang 3) ''"" "° ,^^''^l±y^lP>cc^^sau