Một số kết quà nghiến cứu chế tạo hệ sơn nước bảo vệ kết cấu bê tông cốt thép khu vực biển và ven biển

Tgp chi Hoa hgc, T. 47 (3), Tr. 342 - 349, 2009 
MOT SO KET QUA NGHIEN CLfU CHE TAO HE SON NL/6C BAO 
VE KET CAU BE TONG COT THEP KHU VL/C BIEN VA VEN BIEN 
De'n Tda sogn 8-9-2008 
NGUYfiN THI BICH THUY 
Vien Chuyen ngdnh Vdt lieu Xdy dung vd Bdo ve Cdng trinh - Vien Khoa hgc vd Cdng nghe GTVT 
ABSTRACT 
This article is about our research on two different kinds of waterborne paint: acrylic and 
epoxy paints ideally for making anticorrosive coatings of steel reinforced concrete in marine and 
maritime environment. Using water as the main solvent, these paints with low organic solvent are 
normally non odor. Our empirical tests show that they fulfilled all requirements of22TCN 235-97 
and TCVN 6934:2001, the Vietnamese technical standards governing building materials for 
protection of concrete or steel reinforced concrete in the maritime climate area. 
Keywords; Waterborne paint. Acrylic and Epoxy paints. Maritime environment. Steel reinforced 
concrete. 
I - GlOl THIEU 
Td cud'i th i ky 20 van d i mdi trudng ngay 
cing dugc quan tam sau sic tren toan th i gidi. 
Cac diiu luat vi bao ve sdc khoe va bao ve mdi 
trudng cd lien quan din viec phit tan dung mdi 
hifu CO ddc hai vi nguy hiim cua cic loai son da 
dugc ban hanh tai nhiiu qud'c gia thudc khdi 
lien minh chau Au (EU) va NAFTA. De dip 
dng yeu ciu nay, linh vuc son trang trf va bao ve 
da dat ra yeu cau vi viec thay ddi thanh phin 
cic loai son dung mdi huu co truyin thdng cung 
nhu cdng nghe che tao tuang dng [ 1 - 3 ] . Trong 
dd, hudng nghien cdu phit trien cic loai son 
long khdng chda dung mdi huu ca dang duge 
trien khai ngiy cang manh me. Vi vay, viec 
nghien cdu ch i tao he son khdng chda dung mdi 
huu CO va cac thanh phin ddc hai khic bio ve 
mdi trudng, ddng thdi dap dng cic ddi hdi ngiy 
cing cao vi kha nang bao ve chdng an mdn cho 
cic kit ca'u be tdng cd't thep trong mdi trudng 
khf hau Viet Nam la mdt van di vd cung cin 
thie't [4, 5]. 
II - THUC NGHIEM 
1. Nguyen lieu va hda chat 
Viscopol 7350; Ham luong nhua td 49,0 ^ 
51,0; Do nhdt Broofield RVT 2/50 d 25°C tit 50 
-e- 500 eps; pH 8,4 -;- 9,0 eua hang Nuplex. 
Waterpoxy II.4-RE l i nhua epoxy phan tan 
trong nudc; Do nhdt tai 25°C la 3500 mPa.s. Ty 
trgng 1,1 g/cm^ Duong lugng epoxy 1050 cua 
hang Cognis. 
Cha't ddng rin polyamin trong nudc 
Waterpoxy II. 1-HE cd do nhdt d 25°C td 8500 -
15000 mPa.s; Ty trgng 1,09 g/cm'; Duong 
lugng H 225 cua hang Cognis. 
Acrylic styren: phan tin trong nude, ham 
lugng 53%. 
Bdt mau, phu gia. 
2. Cac phuang phap nghien ctfu 
Ham lugng chat khdng bay hai dugc xac 
dinh theo TCVN 2093 - 1993. 
342 
Do phu cua son duac xac dinh theo TCVN 
2095-1993. 
Do min eua son duac xac dinh theo TCVN 
2091 - 1993. 
Thdi gian khd cua son duac xic dinh theo 
TCVN 2096-1993. 
Dd bdng cua mang son duoc xic dinh theo 
TCVN 2101-1993. 
Dd ben va dap eua ming son duac xac dinh 
theo TCVN 2100-1993. 
Dd bin udn cua mang son duac xac dinh 
theo TCVN 2099 - 1993. 
Dd cdng eua mang son duac xac dinh theo 
TCVN2098-1993. 
Do bim dinh ming son tren nin be tdng 
dugc xac dinh theo TCVN 6934 - 2001. 
Dd bin nudc cua mang san tren nin be tdng 
dugc xac dinh theo TCVN 6934 - 2001. 
Do bin kiim cua mang son tren nin be tdng 
xic dinh theo theo TCVN 6934 : 2001. 
Xic dinh dd chiu man cua ming son theo 22 
TCN 235 - 97.' 
Xac dinh dd rda trdi cua mang son tren nin 
be tdng theo TCVN 6934 - 2001. 
Chu ky ndng lanh cua ming son tren nin be 
tdng dugc xic dinh theo TCVN 6934 - 2001. 
Dd bin nhiet im cua ming son tren nin be 
tdng dugc xac dinh theo TCXDVN 341- 2005. 
Dd tha'm nudc eua mang son dugc xie dinh 
theo EN 1062-3- 1998. 
Phuang phap tdng trd dien hda (EIS). 
Phuang phip gia td'e an mdn bang thd 
nghiem phun mu mudi ASTM B-117. 
Phuang phap thd nghiem bdc xa td ngoai 
theo ISO 11507. 
Phuang phip nhiet im TCXDVN 341; 2005. 
Ill - KET QUA VA T H A O LUAN 
1. Nghien cilu che tao son nude epoxy 
Qua nghien cdu tdng quan cic loai son 
trenca sd chat tao ming epoxy, chdng tdi lira 
chgn loai son nghien cdu cd him lugng % theo 
khd'i lugng: chit tao mang nim trong khoang 
40%, bdt miu va bdt ddn khoing 28-30%, nudc 
nim trong khoing 28% va phu gia trong 
khoang 4% di tie'n hanh nghien cdu. 
Di tao ra nhdng loai son cd tinh nang ky 
thuat td't va giim dugc gia thinh, di tii da tie'n 
hinh khao sit anh hudng ty le nhua epoxy vdi 
ddng rin, ty le BaSOJ Talc va him lugng chat 
hoi deo DOP len tfnh nang cua mang son 
epoxy. 
a) Anh hudng cua hdm lugng chdt ddng ran de'n 
tinh chd't ciia san 
Ty le chat ddng rin tren nhua la yiu to quan 
trgng quyit dinh tfnh chat cua mdt mang son. 
Dua vio thdng sd ham lugng nhdm epoxy va 
ham lugng nhdm amin dugc nhi sin xuit cung 
cip vi kit qua nghien cdu cd thi thiy ring son 
epoxy cd khi nang ddng rin vdi ty le phin khd'i 
lugng Epon IV.5-RE /Epicure IV.3-HE cd thi 
thay ddi trong khoing td 1/1,5 de'n 1/2,2. Di cd 
thdi gian ddng rin tdi uu, chdng tdi lua chgn ty 
le Epon IV.5-RE /Epicure 1V.3-HE la 1/1,9.' 
b) Anh hudng ciia thdnh phdn chdt ddn den tinh 
chd't ciia son 
Di xac lap cdng thdc son thfeh hgp, 
chung tdi tiin hanh khio sit anh hudng cua ty le 
BaS04/Talc len cic tfnh chat vat ly vi ca hgc 
cua mang son. Dua theo kit qui nghien cdu 
tdng quan, 3 cdng thdc son vdi ty le BaS04/Talc 
khac nhau dugc di xuit di tie'n hanh nghien cdu 
d bing 1. 
Td bang 2 nhan thiy, trong khoang ty le 
BaS04/Talc nghien cuu, cic tfnh chit vat ly cua 
3 miu son va cic tfnh chit co ly nhu do bin 
udn, do bam dfnh, do bin rua trdi, do bin nudc, 
do ben kiim vi chu ky ndng lanh cua cac miu 
son khdng cd su khac biet dang ke va diu dat 
yeu ciu. Do cdng tuong ddi cua miu Al va A2 
la tuong duang nhau vi bing 0,35, cao ban do 
cdng tuang dd'i cua miu A3 (0,32). Do bin va 
dap cua miu A2 va A3 dat 50 kg.cm va cua miu 
Al li 45 kg.cm. Nhu vay cd thi thiy ring, tinh 
chit CO ly cua miu son vdi ty le BaSOiTTalc 
bing 35/10 (miu A2) la td't nha't va dap dng yeu 
ciu cua tieu chuan TCVN 6934 : 2001. 
343 
Bdng 1: Thanh phan cac miu son nudc epoxy 
~~———_______^ Miu son 
Thanh phin ~- ____ Al A2 A3 
I. Hap phan A 
Epicure IV.3-HE 
Chat hoi deo DOP 
BaS04 
Talc 
TiO, 
H2O 
42,0 
4,5 
25,0 
20,0 
5,0 
65,0 
42,0 
4,5 
35,0 
10,0 
5,0 
65,0 
42,0 
4,5 
40,0 
5,0 
5,0 
65,0 
II. Hgp phan B 
Epon IV.5-RE 
Cac phu gia 
Tdng; 
22,1 
8,9 
192,5 
22,1 
8,9 
192,5 
22,1 
8,9 
192,5 
Kit qua do cac tfnh chat cda 3 miu son nghien cdu dugc thi hien trong bang 2. 
Bdng 2: Cic tfnh chat ca ly cua cac miu son nudc epoxy 
^ "—-—-_^^ Miu son 
Tfnh chat ' ^^^^ 
Do min,pm 
Do nhdt Brookfield, Poise 
Do phu, g/m^ 
Thdi gian khd, gid 
HLPK, % 
Do bin udn, ram 
Do cdng tuong dd'i 
Do bin va dap, Kg.cm 
Do bam dfnh, diem 
Do rda trdi, chu ky 
Do bin nudc, gid 
Do bin kiim, gid 
Chu ky ndng lanh, chu ky 
Al 
35 
160 
127 
12 
69,83 
1 
0,35 
45 
1 
>1200 
> 1000 
>600 
>50 
A2 
35 
160 
127 
12 
69,96 
1 
0,35 
50 
1 
>1200 
> 1000 
>600 
>50 
A3 
35 
170 
125 
12 
69,73 
1 
0,32 
50 
1 
>1200 
>1000 
>600 
>50 
c) Anh hudng ctia chd't ddn de'n khd ndng chdng 
thdm nudc cua mdng san 
Do tha'm nudc cua mang son 
Ddi vdi son bao ve kit eau BT, BTCT thi ehi 
tieu quan trgng li kha nang chd'ng tham cua 
mang. Vi vay, chdng tdi tiin hanh nghien cdu 
do tha'm nudc cua mang theo tieu chuan EN 
1062-3:1998. 
Theo kit qua d bang 3 ta tha'y, do tha'm nudc 
344 
cua miu A2 va miu A3 la tuang duang nhau va 
rit nhd (0,004 kg/m^h"^), trong khi do tham n-
udc cua miu Al lai cao han han (0,063 
kg/mlh"^). Gia tri nay chdng td, vdi tong lugng 
BaS04 va bgt Talc la 45 g thi trong khoang ty le 
BaS04A'alc tu 25/20 de'n 35/10, kha nang chdng 
thim cua mang son epoxy tang manh theo sU 
gia tang ham lugng BaSOj. 
-I- The an mdn theo thdi gian 
Vdi son bao ve khdng chda cac chat dc ch^ 
an mdn, thdng qua viec do the theo thdi gian 
ngam miu trong dung dich 3% NaCl, chung ta 
cd the danh gia duge kha nang che chin cua 
ming son. Kit qua do the' trong 38 ngay ngam 
miu cua 3 miu son (Al, A2, A3) dugc biiu 
diin tren hinh 1. 
Bdng 3: Do tham nudc cua mang son nudc epoxy 
Thdi gian 
Ophdt 
30 phut 
Igid 
2 gid 
3 gid 
4 gid 
5 gid 
24 gid 
2 ngay 
3 ngay 
4 ngay 
7 ngay 
8 ngay 
Dp tha'm nudc (W„, kg/m^h'") 
Gia tang khd'i luang so vdi thdi diem ban dau (g) 
Miu Al 
0 
0,1196 
0,1993 
0,2961 
0,4619 
0,5447 
0,6442 
0,6755 
1,3865 
2,600 
5,0417 
5,3663 
5,5217 
0,063 
Miu A2 
0 
0,0120 
0,0192 
0,0231 
0,0258 
0,0290 
0,0330 
0,0969 
0,1521 
0,2089 
0,3021 
0,5431 
0,5732 
0,004 
Miu A3 
0 
0,0110 
0,0195 
0,0201 
0,0218 
0,0225 
0,0255 
0,1284 
0,1424 
0,1937 
0,2496 
0,4905 
0,5040 
0,004 
1 3 5 7 9 II 13 15 17 19212325272931 333537 
Th6i gian ( ngay ) 
Hinh 1: Dd thi dien the theo thdi gian cua miu thep dugc phu son epoxy 
Ke't qua nay phan anh giin tiip ve kha nang 
ngan nudc cua cic mang son khi phu hgp vdi 
kit qua do do tham nudc d tren. Nhu vay mdt 
lin nua cd the thay, ty le BaSOi/Talc cd inh 
hudng kha rd de'n kha nang ngan nudc cua mang 
son; miu A2 vdi ty le BaSOj/Talc bang 35/10 cd 
kha nang ngan nudc td't nhat. 
2. Nghien cufu che tao som nudc acrylic 
a) Anh hudng ciia chd't tgo mdng den tinh chd't 
cua san 
Qua nghien cdu tdng quan cic Ioai son tren 
ca sd chat tao ming acrylic, chdng tdi lua chgn 
eie loai son nghien cdu cd ham lugng pliin khd 
khoang 70%. Cung vdi mue dfch chgn chat tao 
mang thich hgp, di tai tiin hanh nghien cdu 2 
loai nhua acrylic; Viscopol (miu Bl) va Acrylic 
styren (miu B2). Cac miu son dugc nghiin 
trong khoang thdi gian 5 gid. Cae kit qua 
nghien cdu cho tha'y cac tinh chat cua cae miu 
son khdng cd su khac biet ding ke va deu dat 
345 
yeu can theo tiiu chuan TCVN 6934 ; 2001. 
Nhu vay, anh hudng cua chat tao mang len tfnh 
chat ca ly cua mang son la khdng ldn. 
b) Anh hudng cda chd't tgo mdng de'n khd ndng 
chdng thdm cua mdng san 
+ Do tha'm nude cua mang son 
Dd'i vdi son bao ve kit cau BT, BTCT thi chl 
tieu quan trgng la kha nang chd'ng tham nudc 
cua ming. Vi vay, chdng tdi tie'n hanh nghien 
cdu kha nang chd'ng tham theo tieu ehuin EN 
1062-3:1998 thdng qua viec xac dinh do thiin 
nudc cua mang son nghien cdu, ddng thdi so 
sinh vdi miu son cho BTCT cua hang sen 
Dulux. 
Kit qui d bang 4 cho tha'y do tha'm nudc ciia 
miu Bl la cao nhat (0,172 kg/mlh"^), sau do 
din miu Dulux la 0,161 kg/mlh"^ va tha'p nhat 
la cua miu B2 (0,010 kg/mlh""). Nhu vay, kha 
nang chd'ng tham cua mang son phu thugc rat 
nhiiu vao chung Ioai chat tao mang acrylic. 
Bdng 4: Do tham nudc cua cic mang son nudc acrylic 
— ^ _ ^ ^ ^ Miu 
Thdi gian "——-^_^^_^ 
Ophdt 
30 phdt 
1 gid 
2 gid 
3 gid 
4 gid 
5 gid 
24 gid 
2 ngiy 
3 ngiy 
5 ngiy 
7 ngay 
8 ngay 
Do thim nudc (W,., Kg/mlh'") 
Gia tang khdi lugng, g 
B l 
0 
3,8110 
4,9648 
6,9670 
7,5395 
8,2001 
8,9111 
17,5180 
24,6283 
30,3422 
44,9032 
50,5370 
53,6316 
0,172 
B2 
0 
0,2813 
0,3316 
0,3321 
0,3340 
0,3359 
0,3649 
0,8090 
1,1778 
1,5661 
2,0593 
2,5328 
2,7130 
0,010 
Dulux 
0 
0,9729 
2,0560 
4,2090 
5,9722 
6,5902 
6,9510 
7,1102 
7,3120 
7,6982 
8,9951 
9,0012 
9,8564 
0,161 
c) The'dn mdn theo thdi gian 
Thi dien cue cua miu thep cd phu ming son 
cung la thdng sd giin tiip phan inh do tham 
nudc cua mang. Bdi vay, de bd sung them thdng 
tin niy, chdng tdi tie'n hinh do thi cua cic miu 
theo thdi gian ngam trong dung dich 3% NaCI. 
Kit qua td hinh 2 cho tha'y, thi cua cic miu 
giam kha nhanh theo thdi gian ngam miu. 
Trong dd miu Bl cd the giam nhanh nhit, sau 
dd de'n miu Dulux va eham nhat la miu B2. 
Khoing thdi gian trong dd thi cua cic miu Bl, 
Dulux va B2 cdn nim d vung cd nguy ca an 
mdn tha'p (> - 200 mV) tuang dng la 3, 4 vi 5 
ngay. Ke't qua nay phan inh mdc do chdng tham 
dung dich dien ly cua cae miu kha phu hgp vdi 
kit qua do do tha'm nudc d tren va kha nang bao 
ve cua ming son phu thudc nhiiu vao viec Ilia 
chgn chit tao mang acrylic. 
3. Danh gia chat lugng cua son 
Qua kit qua khio sit anh hudng eua cic thanh 
phan din tinh chat cua cic loai son nude bao vf 
BTCT, chdng tdi lua chgn loai son epoxy tren cO 
sd nhua Epon IV.5-RE (miu A2) va son acrylic 
tren ca sd nhua acrylic styren (miu B2) de tiip 
tue nghien cdu. 
a) Ddnh gid tinh chdt ca ly cua mdng san 
Cac tfnh chat vat ly va ca ly cua hai loai son 
nay dugc tdng hgp trong bang 5. 
346 
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 1 
d •'''*"• 
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Thoi gian ( ngay ). 
2 4 6 8 10 12 14 16 IS 20 
'^"""^ f^'<«EL~4 * * * — » — . 
^ ' - ^ 5 ^ ^ ^ 
\ ^ \ ^ 
\ ^ * = * " \ n 
\ ^ ^ ^ = ^ n 1 "^ • •HS=P=l i 
A X X A ;(.^ 
- B l 
- B 2 
-Dulux 
-Thep tran 
Hinh 2: Dien thi theo thdi gian cua miu thip dugc phu son acrylic 
Bdng 5: Cie tfnh chit cua son nudc epoxy va acrylic 
TT 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
Tfnh chat 
Mau sic 
Do min 
Do phu 
Do bim dfnh eua ming 
son tren nin vua xi mang 
- cit 
Thdi gian khd 
-1- Khd bi mat 
+ Khd hoan toan 
Ham lugng phin khd 
Do nhdt 
Do bin nudc 
Do bin kiim 
Do rda trdi 
Chu ky ndng Ianh 
Do chiu man 
Dan vi 
Mau 
pm 
g/m^ 
Diem 
Gid 
%kl 
Poise 
Gid 
Gid 
Chuky 
Chuky 
Gid 
Gii tri 
Epoxy 
(miu A2) 
Tring 
35 
127 
1 
2 
12 
69,96 
160 
Acrylic 
(miu B2) 
Tring 
30 
126 
1 
1 
4.5 
69,95 
150 
1000 gid mang son 
khdng bong rgp 
600 gid ming son 
khdng bong rgp 
1200 chu ky mang son 
khdng bi bao mdn 
50 chu ky mang san 
khdng ndt vi bong rgp 
48 gid mang son khdng 
bi bong rgp 
Yeu ciu 
TCVN 6934 ; 2001 
-
50 
125 - 200 
2 
1 
5 
50 
120-200 
1000 gid mang son khdng 
bong rgp 
600 gid mang son khdng 
bong rgp 
1200 ehu ky mang son 
khdng bi bao mdn 
50 chu ky mang son 
khdng nut va bong rgp 
48 gid mang son khdng bi 
bong rgp 22 TCN 235 ; 97 
Cic sd lieu d bang 5 cho thay 2 Ioai son da che tao cd cac chi tieu ky thuat dip dng yeu cau cua 
tieu chuin TCVN 6934; 2001. 
347 
2. Danh gia do ben thdi tiet ciia cac he son 
bang phuang phap thii nghiem gia tdc 
a) Thic nghiem nliiet dm 
Tren ca sd 2 loai son nude epoxy va acrylic 
da chgn, tien hanh son len cac tam miu be tdng 
va thtt nghiem cic miu sau; 
Miu 1; 2 ldp son nudc epoxy (miu son A2) 
vdi tdng do day 100 p.m. 
Miu 2: 2 ldp son nudc acrylic (miu son B2) 
vdi tdng do day 100 pm. 
Miu 3; 1 ldp lot son nudc epoxy (miu son 
A2) diy 50 pm va mdt ldp phu son nudc acrylic 
(miu son B2) day 50 pm. 
Cic miu dugc phoi trong tu nhiet im 21 
ngiy dem lien ttic, sau dd dugc liy ra de dinh 
gii do bin nhiet im cua cic he son. Kit qua cho 
tha'y, sau 21 ngay thd nghiem, cic mang son deu 
khdng bi phdng rgp, bong trdc, ran ndt va khdng 
thay ddi miu sic. Nhu vay, cac loai son va he 
son nghien cdu cd kha nang chiu nhiet im td't, 
dap dng yeu ciu theo tieu chuan TCXDVN 
341:2005. 
b) Thu nghiem bicc xg tic ngogi 
Cic Ioai son nudc epoxy (miu son A2) vi 
acrylic (miu son B2) da chgn, dugc son Ien kfnh 
va thd nghiem buc xa UV trong khoang thdi 
gian 2000 gid. Do bdng cua mang son dugc do 
sau thdi gian bdc xa vi kit qua dugc trinh biy d 
bang 6. 
Bdng 6: Do bdng cua cic mang son sau 2000 
gid thu nghiem bdc xa UV 
Miu 
A2 
B2 
Do bdng, % 
Trudc khi thu 
nghiem 
62 
65 
Sau khi thd 
nghiem 
36 
51 
Td bang 6 ta tha'y, sau 2000 gid thd nghiem 
bdc xa td ngoai, cac miu diu giam do bdng, 
trong dd do bdng cila mang son tren ca sd nhua 
epoxy (miu A2) giam manh (cdn 58% so vdi 
gia tri ban diu) ban hin so vdi mang son tren ea 
sd nhua acrylic (miu B2, cdn 78% so vdi gii tri 
348 
ban dau). Nhu vay, miu son epoxy cd kha nang 
chiu bdc xa td ngoai kem ban nhieu so vdi son 
acrylic. Vi vay, chi nen sd dung son epoxy lam 
son lot cho cic kit ca'u be tdng va be tdng c5t 
thep, son acrylic cd kha nang chiu thdi tiet tdt 
nen su diing lam ldp phu cho he son epoxy. 
4. Thiir nghiem he son nadc bao ve ke't cau 
BTCT tai hien trudng 
Qua cac kit qua thu dugc trong qua trinh 
nghien cdu tai phdng thi nghiem, di tai da lira 
chgn dugc 2 loai son thich hgp di bao ve kit ca'u 
BTCT va da thiet lap dugc quy trinh chi tao 2 
loai son tren. Tren ca sd dd, di tai tie'n hanh san 
xuit thu nghiem 2 Ioai son tren d quy mo Idn 
hon. He son da che tao dugc ap dung tren 2 tru 
ciu (khu vuc khf quyen vi mdn nudc) cau 
dudng sat Nam O, thanh phd Da Nang. Nim 0 
cua sdng cich bien khdng xa, vi tri nay chiu anh 
hudng rat ldn cua mdi trudng bien. Chiu sii xam 
thuc Idn cua nude bien va chiu cic tic dgng co 
hgc cua sdng, cua thuy triiu va cua gid biin. Do 
dd, day la vi tri rat thuan lgi cho viec thtt 
nghiem kha nang bao ve cua he son nude bao ve 
ke't ca'u BTCT da che tao. Bi mat be tdng dugc 
lam sach reu mdc va bui bin bang ban chai sit 
vi dugc rda bing nudc. Sau dd hai ldp son lan 
lugt duge ip dung bing con Ian tai cac bi mat 
khic nhau tren tru ciu; bi mat khd hoan toan va 
bi mat am. Cic kit qua ban diu cho thiy ca 2 
Ioai son da chi tao cd kha nang son tren tit ca 
cac bi mat be tdng: bi mat khd va bi mat im. 
Cie bi mat khic nhau khdng lim anh hudng tdi 
kha nang thi cdng va mdt sd tinh chat cua he 
son nudc da chi tao nhu; bi mat mang son, do 
bim dinh. Sau 6 thing thi cdng, tien hanh danh 
gii chat Iugng mang son theo tieu chuin 22TCN 
300 - 02. Kit qua danh gia eho thiy hinh dang 
ming son khdng thay ddi ding ki. 
IV - KET LUAN 
1. Son nudc epoxy da che tao tren ca s6 
nhua Epon IV.5-RE (miu A2) cd cae chi tieu ky 
thuat dap dng tieu chuan TCVN 6934 : 2001. 
Ming son cd kha nang chd'ng tham cao, chiu 
nhiet am va chiu man td't. Tuy nhien, do kha 
nang chiu bdc xa td ngoai kem, nen Ioai nay sii 
dung thich hgp lam son lot cho bi mat kit cau 
BTCT lam viec ngoii trdi, ke ci d nhung vung 
khi hau tren biin, ven biin vi vung mdn nudc. 
Dd'i vdi nhung bi mat kit ca'u BTCT khdng chiu 
anh hudng true tiip cua inh sang mat trdi thi 
cung cd the su dung loai son niy de lam Idp phu 
ngoai cung. 
2. Son nudc acrylic (miu B2) da che tao tren co 
sd nhua Acrylic styren cd cie chi tieu ky thuat 
dap dng tieu chuin TCVN 6934 : 2001. Ming 
son cd kha nang chd'ng tham, chiu nhiet im va 
chiu man td't. Do kha nang chiu bdc xa tu ngoai 
td't, nen loai nay su dung thfeh hgp Iim son phu 
cho bi mat kit ca'u BTCT lim viec ngoai trdi, ke 
ea d nhirng vung khi hau tren bien va ven biin. 
3. He gdm Idp Idt li son nudc epoxy tren ca 
sd nhua Epon IV.5-RE (miu A2) va ldp phu Ii 
son nudc tren ca sd nhua Acrylic styren (miu 
B2) sd dung thich hgp di bao ve cac kit ciu, 
cdng trinh BT va BTCT khu vuc khf hau tren 
bien va ven bien. 
TAI LIEU THAM KHAO 
1. Nguyin Thi Bich Thuy vi cae tic gii, Bao 
cao khoa hgc - Nghien cdu cdng nghe chi 
tao va sd dung vua ximang - polyme de sua 
chua kit cau be tdng cd't thep (BTCT) d 
vung bien, ven bien trong dieu kien cdng 
trinh dang khai thac". Trung tam KHCN 
bao ve cdng trinh va phuang tien GTVT, 
Vien KH&CN GTVT, Hi Ndi (2006). 
E. H. Walker, M. I. Cook. Two Component 
Waterborne Epoxy Coatings, ACS 
Symposium Series 663 Technology for 
Waterborne Coating, I. Edward Glass 
Editor, 1997 The American Chemical 
Society. 
E. H. Walker, O. Shffer. in Provider, T. (ed). 
Film Formation in Waterborne Coatings, 
ACS Symposium Series 648, Washington D. 
C, 1996,403-417. 
M. Dhanalakshmi, K. Maruthan, P. 
Jayakrishnan, N. S. Rengaswamy, Coatings 
for Underwater and Wet Surface 
Application, Anti-Corrosion Methods and 
Materials, 44, 6, 393 - 399 (1997). 
Johann BilUani, Werner Wilfinger, 
Waterborne Acrylic Polyols for 2K 
Waterborne Polyurethane Coatings, 
European Coatings Show, April 2-5, 2001, 
Nurnberg, Germany. 
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