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TCVN T I U C H U N Q U C G I A

TCVN 8860-12 : 2011

Xut bn ln 1

B TNG NHA - PHNG PHP TH - PHN 12: XC NH N NH CN LI

CA B TNG NHA

Asphalt Concrete Test methods

Part 12: Determination of Remaining Stability

H NI - 2011

2

TCVN 8860-12 : 2011

3

Mc lc

1 Phm vi p dng ..................................................................................................................... 5

2 Ti liu vin dn ...................................................................................................................... 5

3 Thut ng v nh ngha ......................................................................................................... 5

4 Xc nh n nh cn li...................................................................................................... 5

4

Li ni u

TCVN 8860-12 : 2011 c chuyn i t 22 TCN 62-84 theo quy nh ti khon 1

iu 69 ca Lut Tiu chun v Quy chun k thut v im a khon 1 khon 1 iu

7 Ngh nh s 127/2007/N-CP ngy 1/8/2008 ca Chnh ph quy nh chi tit thi

hnh mt s iu ca Lut Tiu chun v Quy chun k thut.

TCVN 8860-12 : 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 8860 : 2011 B tng nha Phng php th gm mi hai

phn:

- TCVN 8860-1 : 2011, Phn 1: Xc nh n nh, do Marshall

- TCVN 8860-2 : 2011, Phn 2: Xc nh hm lng nha bng phng php

chit s dng my quay li tm

- TCVN 8860-3 : 2011, Phn 3: Xc nh thnh phn ht

- TCVN 8860-4 : 2011, Phn 4: Xc nh t trng ln nht, khi lng ring ca b

tng nha trng thi ri

- TCVN 8860-5 : 2011, Phn 5: Xc nh t trng khi, khi lng th tch ca b

tng nha m nn

- TCVN 8860-6 : 2011, Phn 6: Xc nh chy nha

- TCVN 8860-7 : 2011, Phn 7: Xc nh gc cnh ca ct

- TCVN 8860-8 : 2011, Phn 8: Xc nh h s cht lu ln

- TCVN 8860-9 : 2011, Phn 9: Xc nh rng d

- TCVN 8860-10 : 2011, Phn 10: Xc nh rng ct liu

- TCVN 8860-11 : 2011, Phn 11: Xc nh rng lp y nha

- TCVN 8860-12 : 2011, Phn 12: Xc nh n nh cn li ca b tng nha

TCVN 8860-12 : 2011

5

T I U C H U N Q U C G I A TCVN 8860-12 : 2011

B tng nha - Phng php th -

Phn 12: Xc nh n nh cn li ca b tng nha

Asphalt Concrete - Test methods -

Part 12: Determination of Remaining Stability

1 Phm vi p dng

n nh cn li ca b tng nha (BTN), l mt trong nhng ch tiu phc v cho vic thit k v kim sot

cht lng BTN, c dng nh gi nh hng ca nc i vi BTN.

2 Ti liu vin dn

TCVN 8860-1 : 2011, B tng nha - Phng php th - Phn 1: Xc nh n nh, do Marshall..

3 Thut ng v nh ngha

Trong tiu chun ny s dng thut ng v nh ngha sau:

n nh cn li (Remaining Stability)

Ch tiu nh gi nh hng ca nc i vi n nh Marshall ca BTN .

3 Xc nh n nh cn li

n nh cn li ca b tng nha (R), tnh bng phn trm (%), chnh xc ti 1%, theo cng thc:

100S

aSR

trong :

S l n nh Marshall ca BTN khi ngm mu trong b n nhit 60 oC trong thi gian 40 min i vi mu Marshall tiu chun hoc 60 min i vi mu Marshall ci tin, xc nh theo TCVN 8860-1 : 2011;

Sa l n nh Marshall ca BTN khi ngm mu trong b n nhit 60 oC trong thi gian 24

h, xc nh theo TCVN 8860-1 : 2011.