Tccs 09 2014 tieu chuan co so be tong nhua nguoi cacboncor

B0 crAo rnOruc vAru rAlrOruc cgc suolrc eQ vrFr NAM TCCS 09 : 2014/TGDBVN xudt bin Hn t LqP VAT LIEU CARBONCOR ASPHALT TRONG xAv DI/NG uA sua cH[rA KEr cAu Ao Dt/oNG O rO -TIEU CHUAN TH

BQ GIAO THONG VAN TAI

T6NG CUC DI.'ONG BQ VIET NAM

ceNG HoA xA ngt cHU Ncnia vIET NAM

DQc lfp - Tg do - H4nh Phtic

,it, Sflt I /QE - rcDB\rN HA N|i, nsdy *A thdng 12 ndm 2014

QUYET DINH

Vd viQc cdng Uii tiOu chu6n ccr sO

TONG CUC TRU0NG TONG CUC DttoNG BQ VIET NAM

c6n cri LuQt Ti€u chuan vd Quy chuan k! thuQt ngey 291612006;

C6n cir Nghi dinh sO I27I2007|ND-CP ngdy 011812007 cira Chinh phu Quy

aiorr rr-ilic;rhif;"h;6J ro didu ctra Luat Ti6u ttt,rAtt vd Quy chuAn k! thupt;

C6n cri Th6ng tu si5 ZUZ007ITT-BKHCN ngdy 281912007 cria BQ Khoa hqc

vd C6ng nghe hu6ng ddn viQc xdy dgng vd 6p dUng ti€u chudn;

C6n cir euy6t dfnh s6 60lz0l3lQD-TTg ngey 2111012013 cua Thir tucrng Chinh phu quy einn ni ndng,nhiQm vp, quydn h*n vd co cdu t6 chirc ctra T6ng

cUc Ducrng U6- Viet Nam thuQc BQ Giao thOng vpn tAi;

c6n cir c6ng v6n s5 I5546:BGTVT-KHC{ ngdy 0511212014 c:f;a BQ Giao th6ng vpn t6i ,rC,ri-e" hoin thiqn du th6o TiOu chuAn co s0 "L6p vOt lipu Carboncor

Asphalt rrong {dy dung vd sua chta ktSt c6u 5o dubng o to - Thi c6ng vd nghiQm thu" dO cdng b6, ban hdnh;

Cdn cir dg th6o Ti€u chuAn co s0 "LOp vft liQu Carboncor Asphalt trong xdy dung vir sira chia ket cAu 6o dulng 6 tO - Thi cOng vd nghiQm jl:" do Vign Khoa hqcla C6ng nghe GTVT bi6n sopn gui kdm cdng vdn sO 2662NI<TICN-KHCN ngay 0911212014;

x6t dc nghf cua vp trudng Vu Khoa hgc c6ng ngFe, M6i truhng vd Hqp t6c qu5c t6'

euYET D[NH:

Didu 1 C6ng UO fieu chuAn co s6:

TCCS 0g :2014/TCDBVN Lcrp vat liQu carboncor,Asphalt trong xay

dung vd sira chfia ket cAu 5o dulng 6 t0

-Thi c6ng vd nghiQm thu

Diiiu 2 euy6t dinh ndy c6 hiQu lUc thi henh tC tir ngdy kt,J .V

B0 crAo rnOruc vAru rAl

rOruc cgc suolrc eQ vrFr NAM

TCCS 09 : 2014/TGDBVN

xudt bin Hn t

LqP VAT LIEU CARBONCOR ASPHALT TRONG

xAv DI/NG uA sua cH[rA KEr cAu Ao Dt/oNG O rO

-TIEU CHUAN THI COI,IC VA T,ICHIEM THU

Carboncor Asphalt Material for Construction and Repair of

Pavement-Specification for Construction and Aceeptance

ffiry

HA NOt - 2014

LOP VAT LIFU CARBONGOR ASPHALT TRONG

xAv DUNG vA suA cH[rA KEr cAu Ao DrroNG 0 T0

-TIEU cHUAN THI c6ltc VA NGHIEM THU

Carboncor Asphalt Material for Construction and Repair of

Pavement-Specification for Construction and Acceptance

TCCS O9 :2O14[TCDBVN

Mgc lgc

t PhSm vi 6p dgng 5

2 Tiri ligu viQn d5n 5

3 Thuit ngii vi dlnh nghia .6

4 Phtn loli vi c6c yeu ciu ki thunt ciii voi v$t liQu CA .7

5 YGu ciu vB ctrit ltrgng vlt li€u chti go CA .9

6 G6ng nghe thi c6ng lfp hao mdn bing vit li$u CA 10

7 G6ng nghe thi c6ng v6 s&a hu h6ng mit du&ng bing vflt ligu CA .14

8 Quy dinh ve Uao quin vit li$u CA O c6ng trudng t5 9 G6ng tic giim sit, ki6m tra vi nghiQm thu l0p hao m6n bing vit ligu CA .16

10 C6ng tic kiEm tra vi nghiQm thu c6ng tic vl srla hu h6ng mit du0ng bing vft ligu CA 20 11 An toin lao dQng vi bio v$ m6i trulng .20

Phg lgc A (Quy dinh) Hufng dln thri nghi$m xic dinh d0 6n dinh, d$ d6o Marshall c&a v{t liQu cA o 250C 22

TCCS 09 : 201'UTCDBVN

Ldi n6i dAu

TCCS 09 : 2O1'||TCOBVN do ViQn Khoa hqc vA

C6ng ngh€ Giao th6ng v0n tAi bi6n soAn, B0 Giao

th6ng vOn t6i dd nghi, T6ng cuc Dudng b0 Viet Nam

c6ng b6

4

TCCS 09 : 2OItUTGDBVN

Ldp vqt ligu Carboncor Asphalt trong xiy dpng vi s&a chii'a k€t cdu 6o dulng 6 tO - Ti6u chuin thi c6ng ve nghiQm thu

Carboncor Asphalt Mateial for Construction and Repair of - Specification for

Construction and Acceptance

I Phqm vi 5pd$ng

1.1 Ti6u chuAn nly quy dinh nh0ng y6u vit liQu Carboncor Asphalt, c6ng nghQ thi

c6ng, ki6m tra, gi6m s6t vd nghiQm thu ldp vaitieu Carboncor Asphalt ding dA x6y dr,rng vA srla chira

f6t cAu 6o dudng 6 t6

1.2 VOt lieu carboncor Asphalt quy dlnh trong ti6u chuAn ndy dugc dirng d6:

1.2.1 Bio tri, v6 srla chira m{t dudng thuOc t6t ci c6c c5p dudng theo ti6u chuAn TCVN 4054:200s.

1.2.2 Dtng lim ldp hao mdn, cdi thi€n d0 nhdm, CtO bing phlng tr6n mit dudng c6p cao A2 (theo ti6u

chu6n 22 TCN 211-OO) tr& xu6ng Trong trudng hqp srl dung lim l6p hao mdn cho mft dudng, m{t

m6ng dudng hoic mit dudng c0 phdi thod min c5c y€u cAu vA cudng d0 theo quy dinh c0a c6pduong tuong Ong

2 Tii liQu viQn din

C6c tdi li€u vien d5n sau rdt cAn thi6t cho vi€c dp dung ti6u chu6n nriy o6i vdi cdc tdi tieu viQn d5n ghinim c6ng o6 tni 6p dung phi6n bdn duEc n6u g6i vdi cdc tiri tigu viQn d5n kh6ng ghi nim c6ng b6 thi6p dung phi6n bAn mdi nh6t, bao gdm cA c6c sfra d6i, b6 sung (n6u c6)

TCCS 09 : 2014/TCDBVN

TCVN 8860-1+12 :2011 BE tOng nhra - Phtwng phdp thir

TCVN 8862 2011 Quy trinh thi nghi€m x6c dinh cwng d0 k6o khi 6p chd cha vat lieu hat

ti6n kdt bdng cdc cndt x6t ainn

2011 Mat dwng 6 t6 - Xdc flnh d0 bdng phdng bdng thtwc dai 3,0 mdt

2011 Mdt duwng 6 tO - Phuvng ph1p do vd ddnh gi6 xdc dinh d0 bdng phdng

theo chi s6 d0 96 ghd qu6c t6 tRt

2011 MQt dtrung 6 tO - Xdc dinh d0 nhdm mflt dtrung bdng phuvng ph6p rdc

cdt-Th(r nghigm

22 TCN 211-06 k) Ao dtdng mdm - Cdc y6u cdu vd chi diln thi6t k6

MS.14 MS-14 Asphalt Cold Mix Manual - Asphalt lnstitute, Manual Senbs No

14, MS-14 $6 tay h6n hqp asphalt nguQi- ViQn Asphalt, 36 tay s6 14,

MS-l4)

Ti6u chuAn ("): Ti6u chuAn dang ttuqc chuy6n d6i

3 Thuft ngiin vi dinh nghia

Trong ti6u chuAn nAy s& dung c6c thuit ng0 vA dinh nghia sau:

3.1 Vft li$u Carboncor Asphalt (CarboncorAsphalt), vi6t tit E CA

H6n hqp gdm than de thai (xit than cl6), c6t liOu d5 vd nh0 tuong c6 sr? dung phu gia d{c biQt, duEc

ch6 teo trong nhd m6y theo c6ng nghg ngugi

3.2 Him luqng nhga (Asphalt Content)

Lugng nhga dudng trong h6n hqp CA, tinh theo phAn trim c0a kh6i luqng h5n hgp CA

3.3 DQ r6ng du (Air Voids)

T6ng th6 tich c0a t6t ci c6c 16 r6ng nim gi0a c6c hat c6t li€u di duqc bec nhua trong h6n hqp CA d5dAm n6n D0 r6ng du duEc bi6u thi blng ph5n trim c0a tn6 ticn m5u hdn hEp CA d6 dAm n6n

3.4 D9 rSng crit tigu (Voids in the MineralAggregate)

The tich c0a khodng tr5ng gi0a c6c hat c6t lieu c0a h5n hEp CA de dAm n6n, the tich niy bao gbm d0

rSng du vi thd tich nh\ra c6 hi€u D0 r6ng c6t tiQu duqc bi6u thi blng phAn trlm c0a the tich m5u h6nhEp CA di dAm n6n

- 3.5 Tf s6 giila bQt kho6ng vi him lugng nhga

I

'-Tf s6 gi0a hAm lugng nh6m bQt khoring (nh0ng hat lqt qua sAng 0,075 mm) c6 trong h6n hEp c6t tieu

- cria CA (tlnh theo phAn trtm kh6i luEng h6n hEp c6t n€u) so vdi hdm luEng nhr-ra c6 trong h5n hEp CA

(tinh theo phAn trim kh6i luqng h6n hqp CA)

6

TCVN 8804

TCVN 8865

TCVN 8866

TCCS 09 : 2014/TCDBVN

3.6 LOp hao mdn

Ldp tr6n cirng cria f6t c6u 6o dudng, c6 chrlc ning han ch6 c6c t6c dung ph6 hoai bd mit vi trgc ti6p

tao ra chdt luEng bA mat phir hEp vdi y€u cAu khai thSc dudng LOp hao mdn kh6ng duEc tinh vio bA

dAy chiu l\rc c0a f6t c6u 6o dudng

4 Phin loqivi cic y6u ciu ki thuft Ciii vOi v{t liQu CA

4.1 Theo cO hat lfn nh6t danh dinh, v6t li€u CA dugc ph6n thdnh 2loa|

- Vat li€u CA c6 cO hat l6n nh5t danh dinh lA 9,5 mm (kf higu CA 9,5);

- Vat lieu Cn c6 cO hat l6n nhAt danh dinh lir6,7 mm (kf hiOu CA 6,7)

Tiry theo muc dich st? dqng dd lua chen loai vat ligu CA phn hqp (Bing 1) Do cudng d0 cOa l6p vat

li€u CA sau khi thi c6ng duEc hinh thdnh, ph6t tri6n theo thdi gian dudi t6c dOng c0a liCn k6t da

-nhr-ra vi qu6 trinh bay hoi nudc n6n chiAu diry t6i da mQt l6p vit li€u CA (sau khi lu ldn) kh6ng qu6 3

cm

4.2 Thdnh phAn cAp ph6i, ham lugng cfrSt f6t dinh asphalt c6 trong vit li€u CA vA pham vi 6p dung I

c0a vit li€u CA duEc quy dinh tqi Bing 1

l

Bing 1 - Thinh phin cip ptri5i, him lugng ctr6t f6t dinh,

2 CO sAng mit vu6ng, mm LuEng lgt qua sdng (o/o kh6i luqng)

TCCS 09:2O14|TCDBVN

Bing 1 - Thirnh phAn c5p phi5i, him tugng ctrit t<tit dinh,

ph?m vi 6p dgng cta vit liQu CA fti6p theo)

4.3 C6c chi ti6u k! thuQt c0a vat lieu CA ph6i thod min c6c chi ti6u ki thuft quy dinh tai Bdng 2.

Bing 2 - Quy dinh vG clc chi ti6u ki thuit ctia v{t li$u GA

3 Hdm luEng nhga tham khio

(tinh theo % khSi luEng h6n hEp CA),

thi nghiQm theo TCVN 8860 - 2:2011

xu6ng

stt Cic chi ti6u ki thuflt

Loai vit li€u CA Phuong phip thr?

nghiQm

cA 9,5 cA 6,7Thrb nghiem tr6n h6n hgp CA rdi (H6n hqp CA duEc sAy kh6 O 110 0C trudc khi thi nghi€m)

1 Tf treng lf thuy6t ldn nh6t Min 2,24 Min 2,19 TCVN 8860-4:2011

2 T! s6 gi0a bOJ kho5ng vA hAm luEng nhqra 1+ 1,5 1+1,5 Tinh to6n

il Th& nghi$m tr6n mlu ch€ bitheo phuong ph6p tarshall

(H6n hEp CA duEc gia nhiQt O 135 oC trong 4 gio trudc khitao m5u)

2 Kh6i luEng th6 tich, g/cm3 Min 2,20 Min 2,10 TCVN 8860-5:2011

3 D0 6n dinh Marshall (60 oC, 40 ph0t), kN Min 7,0 Min 7,0 TCVN 8860-1 :2011

4 D0 d6o Marshall (60 oC, 40 ph0t), mm 2+4 2+4 TCVN8860-1:2011

5 D0 6n dinh cdn lqi (sau khi ngAm m5u d 60 oC

trong 24 gid) so vdid0 6n dinh ban dAu, %

Bing 2 - Quy dinh vi cic chi ti6u ki thuit c0a vit tiQu GA fti6p theo)

stt C6c chi ti6u ki thuit Loai vit ligu CA Phuong phip thr?

nghiQm

cA 9,5 cA 6,7

ilt Th& nghiQm tr6n mlu chii b!theo phuong phip itarshail & nhigt dO 25 oC

(theo hudng d5n tai Phu luc A)

1 S6 chdy dAm n6n m5u 2x50 2x50 PhU luc A, vi MS-14

2 Kh6i luqng th6 tich, g/cm3 Min 1,95 Min 1,91 TCVN 8860-5 :2011

3 D0 6n dinh Marshall (25 oC), kN Min2,2 Min 2,2 Phu luc A

5 LuEng t6n thAt cOa dq 6n dinh Marshall (sau

khi m6u duEc bdo du0ng & di6u kien bio hoA

chAn kh6ng d 6p suAt 100 mmHg, nhi$t d0

25oC trong 1 gio) so vdid0 6n dlnh Marshall

ban dAu, %

Max 50 Max 50 PhU luc A vi MS-14

TCCS 09 :2OlfffCDBVN

Nhd sdn xuSt vat lieu CA c6 tr6ch nhiem c6ng b6 ch6t luEng sdn phdm hdng h6a vA chiu tr6ch nhiem

vA ch6t lugng vit lieu CA khi cung cdp cho thitruong.

5 Y6u cAu vd ctr6t lugng vit tiQu ctrii qo CA

5.1 C6t licu oa

5.1.1 c6t li€u ct6 ding dA sdn xudt CA duqc nghiAn tir de ting, d6 n0i Kh6ng duEc dtrng d6 xay tir

d6 m6c no, sa thach s6t, diQp thach s6t

5.1.2 C6c chiti€u cOa d6 dtng d6 sdn xuAt CA phiithoi min c5c y€u cAu quy dinh tqi Bdng 3.

Bing 3 - C5c chi ti6u quy dlnh cho c6t tigu di ding dd chii eo CA

quy dinh Phuong phip th&

(cin cO ch0ng chithi nghiemki6m tra crla noi sdn xuAt d6

TCCS 09 : 2014/TCDBVN

Bing 3 - c6c chi ti6u quy dinh cho c6t tiQu di dring d6 chti eo cA @6p theo)

quy dinh Phuong ph5p thtl

5 Hdm luqng chung bqi, bUn, s6t, % <2 TCVN 7572-8:2006

7 D0 dinh bdm c&a d6 v0inh\ra dudng, c6p >c6p3 TCVN 7504: 2005

("): Srl dung sang mdt vu6ng vdi c6c kich cO:4,75 mm theo quy dinh tai Bdng 1 d6 x6c dinh hdm tuqng thoi dgt.

5.2 Than dd thdi (xit than d6)

Than d6 thdi (xit than d6) dirng dd ch6 tao CA phii c6 him lugng carbon c6 Cinn (xdc dinh theo TCVN

174 - 86) l6n hon hoic bing 25 %

Nhwa dudng dnng d6 sin xuAt CA la loai nhtra m6c 85 - 100, g6c dAu m6 thoi min c6c ydu cAu k!

5.4 PhrJ gia dac bi€t

DuEc tr0n l5n vdi nh0 tuong nhwa dudng dE h5n hEp CA c6 c6c chi ti6u co lf thod min c6c yeu cAu l

l

6 C6ng nghg thi c6ng l6p hao mdn bing vit liQu CA

6.1 Tu! diAu kien cu th6, l6p hao mdn blng vit lieu CA c6 thd thi c6ng theo phuong ph6p co gi6i

hoic thi c6ng blng phuong ph6p th0 c6ng c6 m6y lu phu trq.

6.2 Chi duqc thi c6ng tr6n mit dudng c0 hoic mdi c6 drl cudng d0 theo thi6t k6 tuong t?ng v6i c5p

duong

6.3 CAn ph6i hEp nhip nhing hoat dOng c0a cdc phuong tien vin chuyBn vat ti€u CA ra hiQn trudng,

thi6t bi raiva phuong tign tudi nudc, lu ldn dd dim bio chAt tuEng vA ning su6t

6.4 Chi duqc thi c6ng l6p vit lieu Cn khi nhiet d0 kh6ng khi tdn hon 5 oC.

6.5 Kh6ng duqc thi c6ng khi trdi mua hoic c6 th6 mua Trong trudng hgp dang thi c6ng hoic mdi

thi c6ng xong md trdi mua thi phdi phrj bat l6n ldp CA

6.6 N€n dim bio c6ng vigc rdi vi lu ldn dugc hodn thi€n vio ban ngay Trudng hEp phdi thi c6ng

vio ban d6m, phii c6 d0 thi6t bi chi6u s6ng dE bdo ddm ch6t luEng vi an toin.

6.7 Tru6c khithi c6ng m6i loai CA thi phdithi c6ng thrl mQt doan d6 ki6m tra vA x6c dinh c6ng nghg

cria qud trinh rii, tudi nudc, lu ldn 6p dung cho daitri Doan thi c6ng thrl phii c6 chidu dait6ithi6u 50

10

TCCS 09 : 2OI'UTCDBVN

m, chidu rgng t6ithi6u 1 lAn xe

6.8 Thi c6ng l0p hao mon bing co gioi

- 6.8.1 Chudn bi mat bing:

BA mit cOa ldp m6ng hoic c0a m{t dudng c0 phii duqc sr}a sang lgi d0ng hinh dang theo thi6t k6

(d0 d6c ngang, chiAu rQng, cao d0), v6 srla c5c hu h6ng, bdo ddm tho5t nudc mit t5t;

- VC sinh sach bui bdn vd c6c v0t li€u rdi rac tr€n bA m{t (bing m6y n€n khi, miy phun nudc ho{c

phuong ph6p th0 c6ng);

Lu ldn lai bB mit mOt vAi Bn qua mOt di6m (n6u dn thi6t);

- Dinh vitrivi cao d0 rdi & hai m6p mft dudng theo d0ng thi6t k6

6.8.2 Dirng xe tudi nudc (cirng c6 thd dtrng phuong ph6p thri c6ng) tudi 3 luqt tr6n bA mit di chuAn

bi, luEng nu6c vira d0 Cd Hm uot d5m vi dAu ci di€n tich bA m{t, nhung kh6ng dA dang nudc thdnh

v0ng Nh0ng ch6 nu0c dqng thdnh v0ng cr.rc b0 phii duqc qu6t di Tu! thuQc vio loai mft duong (l6ng

nhLra, thAm nhip nhLra, c6p ph5id6 ddm, ) vd tinh trqng m{t dudng (c0 hay mdi, kh6 hay Am uort) s6

rdi CA l6n vi diAu ki€n thdi ti6t khi rii C8 lrra chgn tf l€ tudi nudc cho phir hqp (th6ng thudng khodng ;

tr:r 2,0 Um2 d6n 3,5 Um2) vA s6 duEc quy dinh sau khithi c6ng doan th& I

6.8.3 Chuy6n ch& vflt lieu CA tir nhd m6y sdn xu6t hoac kho trO vit liQu CA bing 6 t6 tw d6 d6n c6ng

trudng vd d6 vio ph6u m6y rii; n6u s& dr,rng sin ph6m d6ng bao thi dirng nhAn c6ng d6 vAo ph€u m6y

rdi

6.8.3.1 Cu ly hqp ly vfln chuy6n vit ligu CA chi phq thugc vio diAu ki€n kinh t6, kh6ng phq thuQc vio :

didu kien nhi0t d0

6.8.3.2 C6c xe 6 t6 tU d6 chuy€n chd vit lieu CA phii c6 bat che dd dA phdng mua lAm h6ng v€t lieu

6.8.3.3 Thirng xe 6 t6 phdi sqch, rt}a bing nudc

6.8.3.4 Khi chuy€n ch& vit li€u CA, kh6ng duEc x6p cao qud 16 l0p n6u E CA d6ng bao, kh6ng cao

qu6 1,5 m d6ivdiCA rqi

- 6.8.3.5

.U6i cnuy6n 6 t6 vin chuydn vat li€u CA khi rdi noi sin xu6t hoic kho tr0 phii c6 phi6u xu6txudng ghi16 kh6i luqng, ch6t lugng v?t 1i0u CA

6.8.4 Rdivit ligu CA

6.8.4.1 Vit li€u CA duEc rdi thinh mOJ ldp c6 chidu diy theo thi6t k6 dBu khSp v€t rii bing m6y rdi

Nh0ng ch6 cuc b9 kh6ng rii duEc blng m6y thi duqc phep rdi blng th0 c6ng vA tuAn theo quy dinh tai

6.9 (th6ng thudng h€ s6 lu En khoing tir 1,3 d6n 1,5; gi5 tri cu thd duqc quySt dinh th6ng qua doqn rdi

th&)

6.8.4.2 O tO tu d6 chd v?t lieu CA di lUit6i ph6u mdy rii, b6nh xe ti6p xOc ddu vd nhe nhing vdi 2 truclin c&a m6y rdi Sau d6 diAu khi6n cho thing ben d6 tu tu vit liQu CA xu6ng gi0a ph6u m6y rdi Xe d6

11

6.8.4.3 Tny bA dAy cia ldp rdi vd ndng suAt cia miy mi chgn t6c d0 c0a m6y rdi cho thich hqp kh6ng

d6 xiy ra hiOn tuEng bA mit bi nu,t nd, kh6ng li€n tuc, kh6ng dAu din T6c dq rdi phdi dugc tu v6n

giSm s6t chdp thuQn vi duEc gi0 d0ng trong su6t qu6 trinh rii.

6.8.4.4 Phii thudng xuy6n d0ng thu6n sit Oa d6nh d6u chidu dAy rdi Cd fi6m tra chiAu dAy top vat

lieu khi rdi D6i vdi m6y kh6ng c6 b0 ph0n tqr deng diAu chinh thi v{n tay nAng (hay ha) t6m ti tir tcr d6

ldp v0t liOu CA kh6ng bi kh6c

6.8.4.5 Cu6i ngiry lim viQc, miy rdi phii chqy kh6ng tii ra qu6 vQt rdi khodng tir 5 m d6n 7 m m6i

duEc ngrlrng hoqt dgng

6.8.4.6 M6i n6i ngang vi dgc: Sau mdi ca lim vi€c, m6i n6i ngang vi dgc phdi duEc st}a cho ngay

th8ng vd trudc khi rAi ti6p phdi qu6t sach c6c hat vOt li€u rdi rac d canh m6p, tu0i nu6c tim 6m ddu

- m6p

6.8.4.7 Khi mdy rdi lAm vi€c, b6 tric6ng nhAn cAm dung cu theo mdy Od nm cdc c6ng viQc sau:

Ldy h6n hep v0t lieu CA tu trong phSu m6y rdi te phrl rdi thdnh ldp m6ng dec theo m6i n6i, san dAu

c6c ch5 l6i t6m, r5 c0a m6i n6itrudc khi tu ldn;

Cdo b6, bir phu nh0ng cn6 tdi t6m, 16 m6t cuc b0 tr€n t6p vflt tiOu CA m6i rdi

:

6.8.4.8 Trudng hEp m5y dang riigfp mua dQt ngQt thi:

Ngung cung c6p v?t ligu CA;

- Che ph0 bat tr€n ph6u m6y rdi vi c6c thirng xe 6 tO tu O6 c6 v0t ti€u CA dang d hiQn trudng;

Lim tho6t nhanh nufc mua & dogn dang rii dd dang;

- OEitgnh mua, qu6t nudc dgng cgc b0 tr6n mit l6p vat lieu CA vira rii rdi lu ldn ti6p (kh6ng cAn phii

dqikh6 16o);

- Trudhg hEp mua phirn trong thdi gian ng5n, thi c6ng vigc rii vi lu ldn v6n c6 tn6 ti6n hAnh binh

thudng, chi cAn diAu chinh luqng nudc tudi.

6.8.5 Tu6i nudc vA lu ldn l6p vit li€u CA

6.8.5.1 Sau khi riixong l0p v0t liQu CA, dUng xe tudi nudc tudi 3 tuEt tr6n khSp chidu rOng vet rii d6

vat lieu duEc 5m d6u khip chiBu rQng vd chiAu dAy Tu! theo thditi6t, dq Am c6 s5n c0a vat tieu CA vi

chidu diy c0a ldp rii d6 lua chqn ti l€ tu6i nudc cho phi hsp (th6ng thudng khoing tir 2,5 Um2 d6n

3,5 Um2) Lugng nudc chinh x5c x6 duqc quy6t dlnh sao cho dO Am c0a v0t lieu CA khi lu l6n x6p xi

bing dq Am t6t nn6t (xdc dinh duqc d A.2.9, Phu tuc A)

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