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TCVN T I U C H U N Q U C G I A
TCVN 8817-4: 2011
Xut bn ln 1
NH TNG NHA NG A XT- PHNG PHP TH-
PHN 4: XC NH LNG HT QU C
(TH NGHIM SNG)
Cationic Emulsified Asphalt - Test Method -
Part 4: Test Method for Oversized Particles (Sieve Test)
H NI 2011
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TCVN 8817-4: 2011
3
Li ni u
TCVN 8817-4:2011 c chuyn i t 22 TCN 354:2006 theo quy nh ti
khon 1 iu 69 ca Lut Tiu chun v Quy chun k thut v im a khon
1 iu 7 Ngh nh s 127/2007/N-CP ngy 01/8/2008 ca Chnh ph quy
nh chi tit thi hnh mt s iu ca Lut Tiu chun v Quy chun k
thut.
TCVN 8817:2011 do Vin Khoa hc v Cng ngh Giao thng vn ti bin
son, B Giao thng vn ti ngh, Tng cc Tiu chun o lng cht
lng thm nh, B Khoa hc v Cng ngh cng b.
B tiu chun TCVN 8817:2011 bao gm 15 phn:
TCVN 8817-1:2011, Nh tng nha ng a xt Phn 1: Yu cu k thut
TCVN 8817-2:2011, Nh tng nha ng a xt Phng php th Phn 2: Xc nh
nht
Saybolt Furol
TCVN 8817-3:2011, Nh tng nha ng a xt Phng php th Phn 3: Xc nh
lng
v n nh lu tr
TCVN 8817-4:2011, Nh tng nha ng a xt Phng php th Phn 4: Xc nh
lng
ht qu c (Th nghim sng)
TCVN 8817-5:2011, Nh tng nha ng a xt Phng php th Phn 5: Xc nh in
tch
ht
TCVN 8817-6:2011, Nh tng nha ng a xt Phng php th Phn 6: Xc nh
kh
nh
TCVN 8817-7:2011, Nh tng nha ng a xt Phng php th Phn 7: Th nghim
trn
vi xi mng
TCVN 8817-8:2011, Nh tng nha ng a xt Phng php th Phn 8: Xc nh
dnh
bm v tnh chu nc
TCVN 8817-9:2011, Nh tng nha ng a xt Phng php th Phn 9: Th
nghim
chng ct
TCVN 8817-10:2011, Nh tng nha ng a xt Phng php th Phn 10: Th
nghim
bay hi
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TCVN 8817-4: 2011
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TCVN 8817-11:2011, Nh tng nha ng a xt Phng php th Phn 11: Nhn
bit nh
tng nha ng a xt phn tch nhanh
TCVN 8817-12:2011, Nh tng nha ng a xt Phng php th Phn 12: Nhn
bit nh
tng nha ng a xt phn tch chm
TCVN 8817-13:2011, Nh tng nha ng a xt Phng php th Phn 13: Xc nh
kh
nng trn ln vi nc
TCVN 8817-14:2011, Nh tng nha ng a xt Phng php th Phn 14: Xc nh
khi
lng th tch
TCVN 8817-15:2011, Nh tng nha ng a xt Phng php th Phn 15: Xc
nh
dnh bm vi ct liu ti hin trng
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TCVN 8817-4: 2011
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TIU CHUN QUC GIA TCVN 8817-4:2011
Nh tng nha ng a xt - Phng php th -
Phn 4: Xc nh lng ht qu c (Th nghim sng)
Cationic Emulsified Asphalt - Test Methods -
Part 4: Test Method for Oversized Particles (Sieve Test)
1 Phm vi p dng
1.1 Tiu chun ny quy nh phng php xc nh hm lng nhng ht (ht nha ng
hoc
nhng vt rn khc) c kch c ln hn 850 m c trong nh tng nha ng.
1.2 Tiu chun ny khng cp n tt c cc vn lin quan n an ton khi s
dng. Ngi
s dng tiu chun ny c trch nhim thit lp cc nguyn tc v an ton v bo
v sc khe
cng nh kh nng p dng ph hp vi cc quy nh khi a vo s dng.
2 Ti liu vin dn
Cc ti liu vin dn sau y l cn thit p dng tiu chun ny. i vi cc ti
liu vin dn
ghi nm cng b th p dng bn c nu. i vi cc ti liu vin dn khng ghi nm
cng b
th p dng phin bn mi nht, bao gm c cc sa i, b sung (nu c).
TCVN 8817-2:2011, Nh tng nha ng a xt - Phng php th - Phn 2: Xc
nh
nht Saybolt Furol
ASTM E1, Standard specification for ASTM thermometers (Quy nh k
thut i vi nhit k
ASTM)
ASTM E11, Standard specification for wire cloth and sieves for
testing purposes (Quy nh k
thut i vi li sng v sng dng cho th nghim)
3 Tm tt phng php th
S dng mt sng tiu chun c mt sng l vung kch c 850 m sng, xc nh
hm
lng ht cn li trn sng so vi khi lng mu th nghim.
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TCVN 8817-4: 2011
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4 Chun b mu th
4.1 Khuy u mu t ng nht trc khi th nghim.
4.2 i vi nh tng nha ng c quy nh th nghim nht 50 oC: Lm nng mu
n
nhit 50 oC 3 oC bng cch t bnh ng mu vo b nc hoc t sy, np y ca
bnh
ng mu phi c m thot kh. Sau khi nhit mu t n 50 oC 3 oC, khuy u
mu
t ng nht.
4.3 i vi nh tng nha ng c quy nh th nghim nht 25 oC: Khuy u
mu
trong bnh ng mu nhit 25 oC 3 oC t ng nht.
CH THCH 1 : i vi nh tng nha ng c quy nh th nghim nht 25 oC, mu c
th c
lm nng v khuy nh quy nh ti 4.2, nu cn thit. Trong trng hp ny, mu
s c lm ngui n
nhit 25 oC 3
oC trc khi th nghim.
5 Thit b, dng c v vt t
5.1 Sng: Mt sng c ng knh 76,2 mm ph hp vi tiu chun ASTM E11, mt
sng l
vung kch c 850 m.
5.2 Khay kim loi c kch c ph hp m kht ly sng
5.3 Nhit k:
- Nhit k ASTM loi 17C ph hp vi tiu chun ASTM E1 (nhit k thu ngn
c phm vi o
t 19 oC n 27 oC, vch chia 0,1 oC) khi th nghim 25 oC.
- Nhit k ASTM loi 19C ph hp vi tiu chun ASTM E1 (nhit k thu ngn
c phm vi o
t 49 oC n 57 oC, vch chia 0,1 oC) Khi th nghim 50 oC.
5.4 Cn:
- Mt cn c kh nng cn c 2000 g vi chnh xc 1 g.
- Mt cn c kh nng cn c 500 g vi chnh xc 0,1 g.
5.5 T sy: C kh nng duy tr c nhit 105 oC 5 oC.
5.6 Bnh ht m.
5.7 Chu ng nc.
5.8 Cc thu tinh dung tch 1500 mL.
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TCVN 8817-4: 2011
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5.9 Dung dch cht hot ng b mt khng c i-on 1 %: 1 g cht hot ng b
mt khng c i-on
(khuyn co s dng ethoxylated nonylphenol).
5.10 Nc ct hoc nc c kh i-on.
6 Tin hnh th
6.1 Nhit khi th nghim c lin quan n nht ca mu th. i vi mu nh tng
nha
ng c nht Saybolt Furol 25 oC nh hn hoc bng 100 giy (xc nh theo
TCVN 8817-
2: 2011), th nghim c thc hin nhit mi trng. i vi mu nh tng nha
ng
c nht Saybolt Furol 25 oC ln hn 100 giy v mu nh tng nha ng c
nht
Saybolt Furol quy nh 50 oC, th nghim c thc hin nhit 50 oC 3
oC.
6.2 Cn xc nh khi lng ca sng v khay chnh xc n 0,1 g (A, g) sau lm
t sng
bng nc ct.
6.3 Ly 1000 g + 5 g mu (B, g) cho vo cc thu tinh, sau nh nhng rt
qua sng 850 m; s
dng nc ct ra cc thu tinh v cht cn trn sng cho n khi nc trong chy
ra khi sng.
6.4 t khay ng sng c cha cht cn vo trong t sy 105 oC 5 oC trong 2
gi. Sau ly
ra, ngui trong bnh gi m v cn xc nh khi lng ca khay, sng c cha
cht cn (C, g).
7 Tnh kt qu
Hm lng ht qu c (ln hn 850 m) c trong mu nh tng nha ng (k hiu l
LHL)
tnh bng % khi lng theo cng thc sau:
(%)100B
ACLHL
trong :
A l khi lng ca khay v sng trc khi th nghim, g;
B l khi lng ca mu th nghim, g;
C l khi lng ca khay v sng c cha cht cn sau khi sy, g.
8 chm v chch
8.1 S dng cc chun c sau y nh gi chp nhn cc kt qu (xc xut 95
%):
8.1.1 Chp nhn kt qu thu c ca hai ln th nghim khc nhau trn cng mt
mu ti cng
thi im bi cng mt th nghim vin khi lp li khng vt qu quy nh
sau:
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TCVN 8817-4: 2011
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LHL, % theo khi lng lp li, % theo khi lng
0 0,1 0,03
8.1.2 Chp nhn kt qu thu c ca hai phng th nghim khc nhau khi cng
th nghim mt
mu nu ti lp khng vt qu quy nh sau:
LHL, % theo khi lng ti lp, % theo khi lng
0 0,1 0,08
8.2 chch ca tiu chun ny khng th xc nh v khng c vt liu no c gi tr
tham chiu
c chp nhn c gi tr.
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