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Long An, 06/2014
CNG TY C PHN U T V XY DNG BMT
TS. V i T
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1. Vn n tri
2. Ci tin trong sn xut v thi cng
3. Xu hng thit k BTN c vt hn bnh xe thp
4. nh gi tnh nng ca BTN thng v BTN ci tin
5. Tnh l 25B v Xa L H Ni
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+ Ph bin c nc,
min Nam xut
hin vn nn ny t
nm 2008
+ Xut hin ch yu
trn cc ng trc
quc l, tnh l c
lu lng ln v qu
ti
i l ng Ty Xa l H Ni
Quc l 5 Quc l 1A
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Nguyn liu Nhng tn ti Ci tin
- Thnh phn ht khng n nh v ly t
nhiu ngun hng, trong 1 ngun hng th cc
thi gian khc nhau thng c t l thnh phn
ht khc nhau
- Bin ct liu ln. Kh khn trong vic
kim sot t l cp phi khi thit k cp phi ,
sn xut.V d 1x2 c kch thc 10-22mm.
Lp t h thng sng v phn loi li
cc ngun ngay ti trm kim sot
t l thnh phn ht
- Trong mt ngun , th c nhiu va khc
nhau c s khc nhau v: cng , hm
lng bn st.
La chn m ng nht kt hp
kim tra thng xuyn cng , hm
lng bn st.
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Nguyn liu Nhng tn ti Ci tin
- Ngun khng m bo dnh bm. c
ngun gc granite thng dm bm km
La chn c bm dnh tt.
- Ngun c hm lng thoi dt cao thng
trn 30%, mt s ngun c cng ngh c k
thng trn 40- 50%
X l bng h thng quay ly tm m
bo hm lng thoi dt
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Nguyn liu Nhng tn ti Ci tin
- c m cao do gp ma trong vn
chuyn, lu tr.
- Khi vn chuyn: phi ph bt, hn ch
ngm nc.
- Xy dng nh kho cha lu tr
trong qu trnh sn xut
- Cc hc cha phi c mi che
ln t, bn st Tm kim ngun sch, khng ln tp
cht
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Nguyn liu Nhng tn ti Ci tin
Ct
- Khan him ngun ct c modun ln, ct t
nhin bm dnh nha km
S dng ct xay v kim sot tt t l,
cng
- Ln nhiu tp cht, bn st
- La chn v kim sot ngun trc
khi sn xut ct nghin, m bo khng
ln tp cht, bn st
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Nguyn liu Nhng tn ti Ci tin
Bt khong
- Dng bt khong t nhiu ngun , khng
kim sot c hm lng Cacbonat, cng
gc, ln tp cht
Bt khong c nghin t c ngun
gc vi, hm lng bi bn st
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Qu trnh thi
cng Nhng tn ti Ci tin
Cng tc v
sinh
Cng tc v sinh khng sch --> khng dnh
bm. Mt s cng trnh thi cng trn tuyn
ang lu thng, thng b hin tng 1 lp
bt bm cng trn b mt
Phi bm b ht ton b lp bt , m
bo vt liu ti dnh bm, thm bm c
vi nn di
Vt liu ti,
dnh bm,
thm bm
Vt liu ti, dnh bm, thm bm khng
ph hp --> khng pht huy tc dng dnh
bm. c bit, trn bn mt cu chng
thm, s gy tc dng ha hc gia cht
chng thm v vt liu ti
S dng vt liu ph hp cho tng loi b
mt nn , BTN, bn mt BTXM
Hm lng
nha ti
dnh bm,
thm bm
Hm lng nha qu t --> khng m bo
dnh bm, thm bm.
Hm lng nha qu nhiu --> gy trt b
mt, thm ngc ln lp BTN pha trn, dn
n h hng
Kim sot hm lng nha ti va
Thi gian
thm nha
sau khi ti
Thi gian ch phn tch (i vi nh
tng), tch du (i vi MC70) khng
dn n lng nc, lng du trong vt
liu ti cha bay ht --> khng dnh bm
v thm vo BTN
C thi gian ch
vt liu tc phn tch ht
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Qu trnh thi
cng Nhng tn ti Ci tin
S lu - Thit b lu s cp nh --> khng m bo
cng lu v thi gian lu
Tng ti trng v b rng vt lu --> m
bo cng lu v thi gian lu, trnh mt nhit
B sung thit b lu rung m bo cng
lu
X g chn
m
Thng c gia cng khng chc chn -
-> BTN ti mp khng m bo chiu dy
v cht.
Gia cng chc chn cc x g chn m
S dng li p, ct ca xe lu.
Thi gian
thng xe
Thng thng xe khong 2h sau khi lu -->
BTN nhit cn cao --> ln mt ng
Thng xe 24 ting sau khi hon thnh lu,
m bo nhit xung thp ngang bng
nhit mi trng
Thi cng
BTN trong
ma ma
Nn cn m --> V sinh, khng sch -->
Dnh bm khng tt
Tuyt i nn ng kh ro trc khi
v sinh, ti nha
Phn ng m rng thng nm v tr
thp so vi mt ct ngang ng --> B
ngm nc khi tri ma
B tr thi cng phn ng m rng trong
thi tit nng.
Vn chuyn BTN trong thi tit ma v
lnh BTN tn hao nhit
S dng phng tin vn chuyn c h
thng bo n. Che chn cn thn, tr ma
khi thi tit bt li.
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Kim tra cht lng u vo
Thit k cng thc ch to
Kim tra cht lng sn
phm
Kim tra hin trng
Theo di nh gi trong qu trnh khai thc
Nghin cu ci tin sn
phm
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Chn vt liu u vo:
+ :
+ T l ht dt: < 10%
+ dnh bm nha vi 4
+ T l bn st: < 2%
+ Nha:
+ Nhit ho mm: 60oC, di nhit s dng t
10-60oC
-
Ch tiu su vt hn bnh xe:
-
nh gi BTN thng BTN PMB1 BTN ph gia cao
su
Ghi ch
c im
Kh nng chu
nhit km, d
ho mm nhit
cao
Kh nng chu nhit
cao do nhit ho
mm cao
Kh nng chu nhit
cao do nhit ho
mm cao
Chng rutting tt do
n hi cao
Chng rutting tt do
n hi cao
Khng nt tt Khng nt nh
thnh phn tnh do
trong hn hp, bm
dnh tt, nht cao
Khng nt nh thnh
phn tnh do trong
hn hp, bm dnh
tt, nht cao
Khng nc
km, d bong
trc do dnh bm
km
Khng nc (bao
bc ct liu tt,
mng nha dy,
hydrophobic)
Khng nc (bao
bc ct liu tt,
mng nha dy,
hydrophobic)
-
Ch tiu BTN 60/70 BTN 40/50 BTN PMB1 BTN ph gia
cao su
Ch tiu v nha ng
Nhit ho mm, oC 46 49 60 60
kim ln 25oC, dmm 60-70 40-50 50-70 30-50
dn di, mm >100 >100 - -
n hi, % Khng n hi Khng n hi 60 40
nht 135oC, Pa.s - Max 3 -
nht 175oC, Pa.s - - 1.5 - 5
bm dnh vi TH Cp 3 Cha nh gi cp 4 cp 4
Ch tiu v BTN
ln bnh xe (mm) 60oC
khng kh
8-12 Cha nh gi 2-5 2-5
Cng chu ko khi p ch
(MPa)
>=1.0 Cha nh gi >=1.0 >=1.0
-
Ch tiu BTN 60/70 BTN 40/50 BTN PMB1 BTN ph gia cao
su
Ch tiu kt cu o ng
Lu lng xe cho
php
(t=60oC;
V=50km/h;
p=0.7MPa, ln
5mm)
285.000 ESALs*
70.000 ESALs
Cha nh gi >4.000.000
ESALs*
2.800.000 ESALs
>4.000.000
ESALs*
2.800.000 ESALs
Thi gian t
ln 5mm
1.5 thng 5 nm 5 nm
* -gi tr trn l khi kt cu o ng trn mt cu BTXM
- gi tr di l khi kt cu o ng trn lp CPD
- ESAL l vit tt ca Equivalent Single Axle Load ngha l s trc xe tnh ton tng
ng. Mt xe ti nng c khong 2 ESALs, container c khong 4 ESALs.
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Ch tiu BTN 60/70 BTN 40/50 BTN PMB1 BTN ph gia
cao su
iu kin sn
xut
Sn xut bnh
thng
Cha c thng
tin
Nhit sn xut
cao hn bnh
thng
Bn cha nha
lng c thit
k c bit
Sn xut bnh
thng
iu kin vn ti Vn ti bnh
thng
Cha c thng
tin
Phi duy tr nhit
trong qu
trnh vn ti
Phi duy tr nhit
trong qu
trnh vn ti
iu kin thi
cng
Dy chuyn thm
v lu ln thng
thng
Cha c thng
tin
Dy chuyn thm
v lu ln hin i
Dy chuyn thm
v lu ln hin i
Kh nng cung
cp
Ln, t hng
trc 1 ngy
Cha c trn th
trng
t hng trc
10 ngy
t hng trc 2
ngy
n gi Gi th trng Gi th trng *
1,6-1,8
Gi th trng *
1.1
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