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DAI HQ C QUOC GIA THANH PH6 HO CHI MINH TRUING DAI HOC BACH KHOA TRUNG TAM NCVL POLYMER o0o BAO CAO NGHIEM THU OE TAI KHOA HOC CONG NGHE CAP THANH PHO DE TAI: NGHIEN CIJU VA THIET LAP CAC TO HO VAT LIEU VINYL BIEN TINH TREN Cd sO DAU DM' NANH EPDXY HOA DE LAM LOP LOT (LIEN DIEN) CI JA VAT LIEU COMPOSITE 119C TREN NEN BETONG VA KIM LOA' CO QUAN THUG HIEN: TRUNG TAM NCVL POLYMER CHU NHIEM DE' TAI: TS LA THI THAI HA Nhu'a vinyl ester bier' tinh tren cd so dau dau nanh epoxy hoa (ESO) vdi s' có mat cua cac day hydrocarbon có axit beo cua dau dau nanh cla nang cao tinh mem deo cling nhu' linh clOng cua mach, do (la cai thin cac tinh chdt cua nhu'a vinylester nhu' dO ben uOn va dO ben va dap va ttY tim kha nang dung moi cua loai nhu'a bi6n tinh Cong nghe boc lot la mot dng dung kha quan cua vat lieu composite FRP, vi vay de tai nay.chting toi ti6n hanh nghien al' dung nhu'a Vinyl ester VESO cong nghe boc lot Nghien cdu ch6 tao ldp vat lieu lien dien (primer) tren cd sa nhu'a vinyl este (VESO) tO' dau dau nanh epoxy hoa vdi axit metacrylic ngoai kha Wang barn dinh tot, ben uOn va ben va clap cao, có kha nang chiu cluOc cac moi tru'Ong an mon, Om co nit nhu'ng hang chiu nhiet van tot gia cong boc vat lieu compozit tren nen kim lc* va be tong VOi sit co mat cua nanoclay da cai thin du'oc kha nang chiu s6c nhiet va khang moi truting cua loai nhiia VESO tudng clu'dng vdi cac nhu'a primer thu'Ong mai khac Muc luc 8411)C ILIIIJC LdI MO DAU MUC LIJC DANH MUC BANG BIPU DANH MIX H1NH VP vii CHUVING PRIMER VA VAT LIEU COMPOSITE (FRP) 1.1 KHAI NIEM VP PRIMER[1] 1.1.1 Vai tro ctia lop primer 1.1.2 Phan loai 1.1.3 Mat so chdt k6t not dung cho be tong hien có tren thi truOng 1 1.2 VAT LIEU COMPOSITE GIA CIIdNG SO' (FRP)[2] 1.2.1 Thanh phAn cua vat lieu composite gia cut(ng sdi 1.2.2 Nht?ng u'u diem cua vat lieu composite FRP 1.2.3 Cac phu'dng phap gia cong vat lieu composite [3] 1.2.4 Tinh chat va Ong dung 3 4 CHUVING NHU'A VINYL ESTER 2.1 G161 THEM CHUNG VP NHU'A VINYL ESTER[4] 2.1.1 Dac tinh cua nhu'a vinyl ester 2.1.2 Nguyen lieu tang hop nhu'a vinyl ester 2.1.3 Qua trInh dong ran nhu'a VE 2.1.4 Ling dung cila nhu'a vinyl ester 7 10 11 2.2 BIEN TINH NHU'A VINYL ESTER 2.2.1 Muc Bich &la viec bi6n tinh nhu'a Vinyl ester 2.2.2 Cac phu'ong phap bi6n tinh[5] 2.2.3 Bi6n tinh nhua vinyl ester bang au au nanh Epoxy hod (ESO) 11 11 12 12 CHVONG LI? THUYET VE KET DiNH [6] 14 3.1 KHAI NICMVE KET DiNH 3.1.1 K6t dinh ngoai 3.1.2 K6t dinh nai 3.1.3 Ke't dinh tu' tao 14 14 14 14 M uc l uc 3.2 CO SO IS" THUYET PHAN T1! 14 3.3 MOT S6 THUYET HIEN DAI VE KET DINH 3.3.1 Thuy6t cO hoc 3.3.2 Thuy6t k6t dinh hoa hoc 3.3.3 Thuy6t hdp phu 3.3.4 Thuy6t ke't dinh tinh din 3.3.5 Thuy6t khuy6ch tan 15 15 15 16 17 17 3.4 CAC YEU TO ANH HIIONG DEN KHA NANG KET DINH 3.4.1 Kha nang thdm uOt b6 mat cua polymer va vat lieu ti6p xtic 3.4.2 Ban chdt ctia vat lieu nen va polymer lam keo dan 3.4.3 Di6u kien gia cong 18 18 19 20 CHUVING NGUYEN LIEU VA HOA CHAT Se DUNG 22 4.1 SWANCOR 907 (SW 907) 22 4.2 SWANCOR 901 (SW 901) 22 4.3 SWANCOR CP99 22 4.4 SWANCOR 984 M 23 4.5 AXIT METACRYLIC (C411602) 23 4.6 PYRIDIN 24 4.7 DAU DAU NANH EPDXY HOA (ESO) 24 4.8 STYRENE 24 4.9 METHYL ETHYL KETON PEROXIT (MEKP) 25 4.10 Co2+ 25 4.11 SOI THf1Y TINH 25 4.12 XI MANG NGHI SON PCB 40 26 4.13 SILICA FUMED 26 4.14 SILAN 27 CHU'CiNG PHCCING PHAP THUC NGHIt' M 28 ii Muc luc 28 5.1 MUC TIEU 28 5.2 NO! DUNG NGHIEN CtiU 5.2.1 Khao sat qua trinh tong hop nhu'a VESO, danh gia cac thong s6h6a 19 28 va tinh chdt co l9 cua nhu'a 5.2.2 Khao sat cac tinh chdt co 19 cua mang tiY cac loai nhila va kha nang barn 29 dinh len kim loai 5.2.3 Anh hu'ong ctia nano clay d6n tinh chdt cua nhu'a cac mai tru'ong an 29 mon va s6c nhi6t 29 5.2.4 Khao sat kha nang barn dinh ctia ldp FRP len be mat kim loai 29 5.2.5 Khao sat kha nang barn dinh cua ldp FRP len be tong 5.3 THIET BI VA PHIIiNG PHAP DANH GIA 5.3.1 Thi6t bi phan tich 0162 FTIR 5.3.2 Thith bi phan tich cO nhiet DMTA 5.3.3 Thie-t bi cu'ong nen ctia be tong 5.3.4 Thi6t bi cu'Ong dO chiu keo ciia be tong 5.3.5 Thieet bi tinh chdt ccl 19 5.3.6 Thi6t bi kha nang an mon din h6a 31 31 31 31 32 32 32 CHUCING KET QUA VA BAN LUA* N 35 6.1 TONG HOP NHVA VESO [7] 6.1.1 Cac y6u to anh hu'ang d6n qua trinh tong hop nhiia VESO 6.1.2 Cac dac tinh ctia nhu'a vinyl ester VESO: 6.1.3 Khao sat cac tinh chdt cua hd dOng trung hop VESO - S 35 35 38 42 6.2 KHAO SAT CAC TINH CHAT CUA MANG PHIM [8] 6.2.1 Khao sat tinh chdt mang phim theo cac to hop nhu'a 6.2.2 Khao sat kha nang barn dinh cua keo dan til cac loai nhu'a 6.2.3 Khao sat h6 nhu'a VESO vdi clay lam primer [9] 43 43 44 46 6.3 LONG NGHE BOC LOT CUA VAT LIEU FRP TREN NEN KIM LORI 55 [10] 55 6.3.1 PhtiOng phap bd mat 57 6.3.2 Anh hu'Ong cua thdi diem gia cong lop FRP d6n dO bdn k6t dinh 58 6.3.3 Anh hu'ong cua moi tru'ong hoa chdt va s6c nhidt 6.4 LONG NGHE BOC LOT CUA VAT LIEU FRP TREN NEN BE TONG 61 61 6.4.1 Kim tra tinh chdt caa be tong 63 6.4.2 Xil'19 be mat be tong iii Muc luc 65 6.4.3 Khao sat anh hu'ong cua dO gm be tong 6.4.4 Khdo sat anh hu'ong cua chgt khcii mao MEKP den nang barn dinh 66 66 6.4.5 Khao sat anti hu'6ng cua phu gia den Ichi nang barn dinh 69 6.4.6 Khao sat thdi diem gia cong composite FRP 69 6.4.7 Anh hu'ong cua moi tru'ong hoa chgt KgT LUAN 71 QUI TR1NH BQC LOP FRP LEN TREN NEN KIM LORI 71 QUI TR1NH CHUNG DE BQC LOP FRP TREN NEN BE TONG 72 QUI TRINH BIEN TINH NHVA VESO V6I NANO CLAY 73 TAI LIU THAM KHA 78 iv Danh mnc bang bidu IIDASIFI 4111)C 113,i1SC 1131 Bang 1.1 Cac san phSrn thuOng mai cua Swancor Bing 4.1 Thong s6 h6a1S7 cila SW 907 22 Bang 4.2 Thong s6 hoa l cila SW 901 22 Bang 4.3 Tinh chdt cua nhiia CP 99 23 Bang 4.4 Tinh chdt cua nhiia SW984M 23 Bang 4.5 Nhirng thong s6 hoa ly cira Silica Fumed 26 Bang 4.6 Thong s6 icy thuat cua DG 27 Bang 6.1 Anh huOng cua nh*da den tinh chdt co V cua VESO—S 36 Bang 6.2 Tinh chdt cd 1/ cua he VESO— S theo ham luong )(tic tac 37 Bang 6.3 Sit thay doi tinh chdt cO ly theo ti le cau tir 38 Bing 6.4 Anh hudng cua styren len nhdt va kha nang tu'Ong hOp 42 Bang 6.5 Anh hudng cua styren den tinh chdt cc( 4/ 42 Bang 6.6 Da b6n u6n, ben va clap va barn dinh cria cac to hOp mang nhiia 43 Bang 6.7 DO ben u6n, ben va clap va barn dinh cua cac to hOp mang nhiia 43 Bang 6.8 Ke't qui keo truOt 44 Bang 6.9 Do ben keo tru'ot cua keo di tit to hop SW901 + VESO 45 Bang 6.10 DO bdn keo trust cua keo di tit to hop SW907 + VESO 45 Bang 6.11 So sanh nhdt cua nhiia theo ham luOng clay 51 Bang 6.12 Ke't qua ben keo trtiOt cac loci ninia 52 Bing 6.13 Keft qua ben keo trust cac rau theo chu kS, s6c nhiet 52 Bang 6.14 Ke't qua mau chiu mai trudng an mon 53 Bang 6.15 Ke't qui clift tra mang 53 Bang 6.16 Da bdn keo trust vdi cac loci primer khac tren kim loci vdi phu'ong phap photphat va phun cat Bang 6.17 Da ben keo trust vdi thdi gian gia cong FRP khac 57 57 Danh rntic bang bidu Bing 6.18 DO ben keit dinh ctia FRP sau ngam dung dich NaOH 10% 58 Bing 6.19 DO bdn ke't dinh ciia FRP sau ngam dung dich H2SO4 10% 58 Bing 6.20 DO bdn ke't dinh cria FRP sau ngam dung moi Toluen 59 Bing 6.21 DO bdn ke't dinh cria FRP len titer) sau s6c nhiet mot chu k5, 60 Bing 6.22 DO ben ke't dinh ctia FRP len the') sau s6c nhiet chu 1(5, 60 Bing 6.23 Ke't qui cu'ong chiu nen ciia be tong 62 Bing 6.24 Ke't qui cutting chiu Ice° ciia be tong 62 Bing 6.25 Ke't qui dO am cfra bd mat be tong 63 Bing 6.26 Ke't qui this Wang dO barn dinh ctia cac loci primer 64 Bing 6.27 Ke't qui this dO barn dinh tren be tong có dO am khac 65 Bing 6.28 Cu'dng dO barn dinh ciia primer VESO vdi cac ham lu'dng chat khdi 66 mao khac Bing 6.29 Anh hu'ang cria Silica Furmed den cac thong s6 cd bin ctia nhtra vi 67 Danh muc hinh ve 81111PC 11-11SII-1 VIE Hinh 3.1 Bidu hien k6t dinh dudi tic dOng cd hoc 15 Hinh 3.2 Bidu hien k6t dinh bang lien keet hoa hoc 15 Hinh 3.3 Bidu hien sit k6t dinh dudi tic Ong cua ltrc tudng tic Van der Waal 16 Hinh 3.4 Bidu hien su' barn dinh bang hic lien k6t tinh then 17 Hinh 3.5 Bidu hien sti barn dinh qua kha nang khuy6ch tan vao 18 Hinh 3.6 Bidu hien kha nang thdrn u'dt be mat 19 Hinh 4.1 Cong thlic phan tit cila Silica fumed 26 Hinh 4.2 Cong thtic phan tit cua Silan 27 Hinh 6.1 Su' thay d6i cila HS theo thdi gian \fa nhiet 35 Hinh 6.2 Anh hu'ong cila ham ludng xtic tic d6n hieu suit phan itng 36 Hinh 6.3 Su' bi6n d6i hien suit phin dng theo ti le du tit 37 Hinh 6.4 Ph6 FTIR ctia ESO 39 Hinh 6.5 Ph6 FTIR cUa VESO 39 Hinh 6.6 (a) Ph6 —NMR cUa ESO, (b) Ph6 —NMR ctia VESO 40 Hinh 6.7 Ph6 13 C -NMR cUa ESO 41 C -NMR cUa VESO Hinh 6.8 Ph6'3 41 Hinh 6.9 So sanh kha nang barn dinh gifra hai ti le tudng hOp 40%, 50% 44 Hinh 6.10 DO' thi DMTA (a) - ti le 40% Styrene va (b) - ti le 50% Styrene 44 Hinh 6.11 K6t qua DMTA cua to hop VESO vdi SW 907 46 Hinh 6.12 Keet qua DMTA cna SW 907 46 Hinh 6.13 Ph6 X-ray cUa mgu VESO %clay a cac thdi gian phan tan khac 47 Hinh 6.14 Anh TEM ctia man Clay 3%, 2h 15p 48 Hinh 6.15 Ph6 X-ray clia man % clay 49 Hinh 6.16 Ph6 X-ray cila mau % clay khudy gid 49 vii Danh muc hinh ye Hinh 6.17 TEM cila mAu Clay 5% 4-10 50 Hinh 6.18 Ph6 X — ray m'au C15 815 50 Hinh 6.19 Ph6 X-ray mau %clay -15 phtit 51 Hinh 6.20 So sanh cu'ong dO (long an mon 53 Hinh 6.21 So sanh dien the chan 53 Hinh 6.22 So sanh van t6c an mon 54 Hinh 6.23 So sanh dien tra thuan 54 Hinh 6.24 So sanh then the chua'n 54 Hinh 6.25 So sanh dien tra than • 54 Hinh 6.26 So sanh dien tra thuAn trongmoi tru'Ong NaOH 30% 55 Hinh 6.27 Be mat they) sau xt/ ly 24 giO qua kinh hidn vi quang hoc 55 Hinh 6.28 Anh giot nhtla VESO teen bd mat the') 56 Hinh 6.29 Anh giot nhtla (a) SW984 va (b) SW901 tren bd mat the') xt7r ly cd hoc 56 Hinh 6.30 (a)-DO bdn keo tru'Ot, (b)-DO bdn tdch boc ctia m'au cdc moi truOng khdc 59 Hinh 6.31 (a)-DO bdn keo tru'Ot, (b)-DO bdn tach boc cua mAu.sau s6c nhiet mot va ba chu kS, 61 Hinh 6.32 Anh bd mat be tong trudc (a) va sau (b) xi ly 63 Hinh 6.33 Anh hitting cua bd mat be tong ddn kha nang barn dinh cua lap k6t not va composite FRP 64 Hinh 6.34 Anh huang ctia dO am be tong ddn kha nang barn dinh 65 Hinh 6.35 Anh htrang cua cha"tIchai mao den barn dinh cila primer VESO 66 Hinh 6.36 So sanh ti (a) va dO nit& (b) cua nhtra VESO sau them SF 67 Hinh 6.37 Cu'Ong dO barn dinh cua nhtra VESO them Silica Furmed 67 Hinh 6.38 So sanh dO barn dinh ctia nhtra VESO va VESO- DG 68 Hinh 6.39 DO barn dinh cua nhtra VESO-SF va VESO-SP- DG 68 viii Chtrong 6.4.3 Khio sat anh hu'ang ctia dO am be tong Thong thu'dng cac san be tong sau 28 tudi thlreing co dO gm < 6% Do sau khao sat v6 anh hu'ang ctia be mat be tong can thieet phai khao sat anh hu'ong cila (10 gm thi cong den curing c10 barn dinh cua lop k6t n6i Being 6.27 xei qud this dO barn dinh tren be tong co dm khtic Logi chat kei ndi DO dm be tong (TO Curing (10 bcim dinh trung binh Ghi clui (MPa) CP-99 7 1,66 Pha htly tai lOp primer VESO 7 2,36 Phd Hy tai be tong Ca hai loci primer VESO va CP-99 deu khong bi anh haing bai dO am ciia be tong Cutting barn dinh caa lOp k6t n6i lam bang VESO va CP-99 la gAn nhu' Hinh 6.34 Anh hang cua dO gm be tong den OM ruing barn dinh Cac khao sat ti6p theo se chugn dieu kien dO gm cila be tong la < 6% Do (10 gm khong anh hu'ong nhieu de-n kha nang k6t n6i cita lop FRP va be tong 65 Chuang 6.4.4 Khao sat inh btrang ctia.clat khdi mao MEKP den kha nang barn dinh Ham luting chdt khdi mao anh hu'ang trtrc tidp ddn qua trinh dong rgn cita nhu'a va quydt dinh kha nang barn dinh len be tong vi v4y chting toi da khao sat them mot s6 ham hieing khdi mao: 1,2 ; 1,5 va 2,0% Being 6.28 Caang barn dinh ctia primer VESO vai clic ham lacing chili khof mao Mac Ham lacing Chuang dO barn dinh MEKP (%) trung binh (Mpa) 1,2 1,55 Pha huy tai lop primer 1,5 1,69 Pha tiny tai lop primer 2,0 1,72 Pha htly tai lap primer Ghi chti VOi ti le chat khdi mao MEKP sir dung la 2% theo kh6i luting cua nhu'a VESO cho kdt qua curing d6 barn dinh cao nlat nhu'ng kh6ng cao han nhidu so vai mOu dong ran a 1,5 % MEKP Tuy nhien thdi gian gel 15 phtit la qua nhanh se han chd kha nang gia cong mh VI vay chon ham luring khdi mao la 1,5% cho clic qua trinh khao sat tidp theo Hinh 6.35 Anh Wang ciia chat khdi mao de'n di) barn dinh ctia primer VESO 6.4.5 Khic• sat anh hutting ctia phu gia den kha nang barn dinh 6.4.5.1 Anh httang ciia Silica Farmed (SF) Do nhua VESO có d6 nhdt alp nen be day ciia lOp kdt n6i be va kho kidm soat hien tutting tha'm hitt vao be tong Dac biet IA gia ding tren bd mat thOng cldng du'di tac dung ciia trung lu'c lop keet n6i se bi chay va khong du thdi 66 Chu'ong gian ciing nhu' chidu day cho 16p nhya VESO k6t not c6 the tha'm vao cac 18 nh6 tren be mat be tong VI v4y can thi6t phai tang d6 nhOt cua he, bang cach sit dung Silica Furmed v6i ham lu'ong 2% theo khol lu'ong VESO Sir dung thi6t bi khudy trOn voi t6c d6 13000 vong/phut de phan tan deu Silica Furmed nhu'a VESO Bang 6.29 Anh hu'eing cart Silica Furmed den cac thong so- co' bdn cua nhua Be dizy lop Ti DO nhet (Cps) primer (mm) VESO 0,972 93 0,05 VESO +2% SF 0,984 144 0,1 CP 99 1,044 265 0,1 Mau Cps 300 DO Walt 250 200 150 100 50 (b) VESO VESO +2% Silica CP 99 Farmed Pau Myth 6.36 So sanh ti (a) viz dO idiot (b) cart nhita VESO sau them SF Khi c6 mat cua SF da lam tang clang ke d6 nhot cua nhu'a, vi v4y be day lOp ket n6i da tang len va de clang Iciem sok du'oc be day cua lOp ket n6i Tuy qy can phai kiem Ira anh hu'ong cua SF d6n kha nang barn dinh cua 16p primer tren be tong Hinh 6.37 Clang dO barn dinh cua nhu'a VESO them Silica Furmed 67 Chuong Khi dO nhdt tang thi chidu day cila lop vat lieu ket not cling tang Tuy nhien hic stic cang be mat cling tang va lam giam kha nang thim tilt ctia nhu'a vao nhiing to nho tren be mat be tong do lien ket vat IS, gram va &An ddn giam cu'dng di) barn dinh 6.4.5.2 Anh hitting cua Dy nasylane Glymo (DG) Nhu vay, nhu'a VESO sau cho SF vao dd tang (10 nhdt thi ang theli cling lam giam kha nang barn dinh cua nhu'a VI vay dd tang cu'ong kha nang barn dinh ctia nhu'a VESO ta sut dung phu gia DG vOi ham lu'Ong 1% khol lu'Ong Tru'oc het khao sat anh huang cda DG den tinh barn dinh ctia nhu'a VESO (Hinh 6.33) MPa Mg u VESO-DG 2.5 1.5 0.5 0 % DG Hinh 6.38 So sanh dO barn dinh cua nhu'a VESO va VESO- DG Khi co them phu gia DG la chit tang citing kha nang lien ket cua nhu'a voi be mat be tong vi vay cuing c10 barn dinh tang len clang Id Nhti vay có thd sir?' dung DG dd car thien kha nang barn dinh ctia VESO-SF Tien hanh kidm tra cac tinh chit vat ly cua nhu'a VESO-SF có phu gia DG ta thiy ti trong, dO nhdt va chieu day 14 ket n6i cua nhu'a VESO co phu gia DG la khong do'i so veiintnia VESO Hinh 6.39 DO barn dinh czia rikta VESO-SF va VESO-SP- DG 68 Chticrng DO ben barn dinh da tang clang k6 c6 mat cua DG ( Hinh 6.34) Gia tri cu'ang d6 barn dinh cao hdn ca FRP voi primer la CP-99 \Tay hang sir dung nhu'a VESO lam lop primer tren be tong la kha t6t va co th6 thay th6 nhVa thu'crng mai CP-99 6.4.6 Khio sat thdi diem gia Ong composite FRP Gia cong lop primer lam bang nhu'a VESO c6 2% SF va 1% DG len b6 mat be tong Sau tieep tuc gia cong 16p FRP len teen cac thdi didmsau 2h, 12h, 24h, va 36h tinh tir qUet lop primer Bio ding rau this sau ti6n hanh this keo de xac dinh cutrng barn dinh cua m'au tint MPa 2.5 - 1.5 ■ 0.5 1- -2 12 Hinh 6.40 Anh hating cua 24 36 (h) gian có the gia cong composite FRP Qua k6t qui hinh 6.35 to thdy viec thi cong 16p FRP len tren be mat lop Iceet n6i t6t nhdt la sau 2h k6 tit bat dau quet 16p keet n6i, vi can c6 thdi gian d6 lop primer tao lien k6t voi b6 mat be tong 6.4.7 Anh Wang cua moi trtidng hoa chdt Trong thu'c t6 cac he th6ng FRP thti6ng lam viec cac mOi trtrdng hoa chdt hay an mon, vi vay can phii Ici6m tra kha nang chiu mOi.tru'6ng cua he FRP cling nhu' lop k6t n6i VESO va so Sanh voi lop k6t not tit CP 99 Ti6n hanh ngam cac rdau be tong da dtictc gia cong FRP cac moi tru'6ng HC1 10% va NaOH 10% theo thdi gian ngay, 14 va 28 Mau sau 06 se du'oc ldy va Ici6m tra cu'dng d6 bam dinh 69 Cho::frig Hinh 6.41 DO barn dinh cua FRP sau nga'm dung dich HCI 10% Hinh 6.42 DO barn dinh cua FRP sau ngam dung dich NaOH 10% K6t qui dui nghi6rn cho thdy dO barn dinh caa FRP tren nen be tong cac • mai tru'Ong thu'c nghi6rn thay dal rat it khoing thdi gian this nghi6m 28 Nhu' vay có the dung lop vat li6u primer ttl VESO hay CP99 lam lacp k6t cho vi6c boc lot vat li6u composite FRP tren nhang ndn betOng cua cac san nha xu'ong, cac be chira hoac be xii ly nuOc thii can khang lai hOa chdt nha HCI hay NaOH voi nOng la 10% 70 Ke't Juan KET LUAN QUI TRINH BQC LOP FRP LEN TREN NEN KIM LORI Cgt mau kim loai the nghiem Chan bi bd mat rau b'ang phudng phap phun cat r6i sau lau sach Danh gia goc thdrn udt cila bd mat kim loai Gia ding 'quet 16p primer —1,5 % MEKP, the i gian gel hda 30 phut Sau 45 phut gia cong ldp FRP len tren bd mat ldp primer compuit vdi mat 30 compozit vdi mat450 primer Danh gia d6 bdn barn dinh &la lop FRP kim loai Cac thong s6 ve (16 ben barn dinh cua ldp FRP ten nen kim loai khong va co sit dung chat lien dien (primer) VESO va SW984 a didu kien thdang va cac moi tru'ang An mon khac va s6c nhiet thd hien a hinh 6.33 va hinh 6.34 Ke't qua cho tha-y viec sit dung primer VESO lam primer theo qui trinh boc 71 Kdt luAn lot tren da dat 1/6 cac yeu cgu du'a vd di:6u kien gia cong , cling ntni dat lcdt qua tot v6 khg nang kdt not lop FRP voi nen kim loci, gia tri dat duOc cao hon so voi nhu'a thi truong SW984 QUI TR1NH CHUNG DE BQC LOP FRP TREN NEN BE TONG Dtic rdu be tong thii nghiem theo lieu chugn • Kim tra mau be tong (cuing nen, Ice°, dO gm) Chugn bi bd mat rau bAng phu'Ong phap bAn cat • Bao du'Ong mau Quet lOp primer — HAm luting (long ran MEKP 1,5 %, thoi gian gel haa 45 phut Bao du'dng mail Sau h gia cong lop FRP tren bd mat be tong Danh gia dO ben barn dinh ciia lop FRP Ldp FRP Ldp FRP Lop ke't Be mat 72 K6t luan DO ben barn &nit tren be tong ctia ldp Primer K6t qui cho thdy vdi qui trinh boc FRP tren nen be tong yeti vi6c sir dung lOp lot primer theo cac thong s6 cu aid ct teen la dat duresc yeu cau ky thu4t vd cii6u gia tri cao kien gia cong va nang k6t not lop FRP tren nen be tong dat nhdt sii dung.primer la VESO Cac thong s6 v6 ben barn dinh clia lop FRP ten nen be tang co sir dung chdt lien din (primer) VESO hay CP 99 ddu cho ke-t qui cao hdn so vdi truing hdp kh6ng sir dung, nhung nang Idt not ldp FRP tren nen be tong ciia VESO ro rang cao hdn so vdi CP 99 a clidu kin thu'Ong ( Hinh 6.36 ) va cac moi truing an mon khac Minh 6.44 va 6.45) Visc dtra mot ltrong % silan vao VESO da lam tang clang ke vai tr.() cua lOp primer ( Hinh 6.41) QUI TRINH BIEN TINH NHIJA VESO VaI NANO CLAY Khio sat nang phan tan ham lu'ong clay khdc nhaU : 1, Ira % vao nhu'a VESO a cac didu kin khac v6 thai gian cho to thdy vdi ham lu'Ong it - 1% clay hi6u qui khong clang ke, vdi % clay thi didu kin phan tan tot nhdt : khudy sd 130 2gid va sau khudy phan tan 15pluit, vai ham lu'ong nhidu - 5% clay hi6u qui chen tach kh6ng du'oc tot lam (ke't qui X-ray va TEM chirng minh didu nay) TEM ctia mau VESO-3 % clay 73 l lll I MAL/ I °A 420 :3 j -r4 ori Mg= u/ 1J car lllll Mau 4-40 an_clele • 0.63761 II eff0 • 72.09 I 0" 0.7 glik • # • • ••109auw • it, 000 '440% - 0%4110,1k , -• a gl 00' 3„,,:\ Gi 00 10' -1 ('' : iu Ni., 444 w t ' 0.0 107 20.0 93.0 40D SOD 600 70.0 600 930 1030 110.0 1200 130.0 Temp rcl Tg cua miiu VESO C13-210 10” 11 wa ;4 L1.'4v 0,3,, ;
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