TCXDVN

TCXDVN Tiu chun xy dng vit nam

TCXDVN 328 : 2004

Tm tri chng thm trn c s

bitum bin tnh

Modified Bituminous Waterproofing Membranes

H ni - 2004

Li ni u

TCXDVN328 : 2004 Tm tri chng thm trn c s bitum bin tnh, c B Xy dng ban hnh theo Q s ./ Q-BXD ngy thng nm 2004.

B Xy dng--------cng ho x hi ch ngha Vit Nam

c lp - T do - Hnh phc

S: 28 /2004/Q-BXD----------

H ni, ngy 29 thng 11 nm 2004

Quyt nh ca b trng B Xy dng

V vic ban hnh TCXDVN 328 : 2004 "Tm tri chng thm trn c s

bitum bin tnh "

b trng B Xy dng

- Cn c Ngh nh s 36 / 2003 / N-CP ngy 4 / 4 / 2003 ca Chnh ph quy nh chc nng, nhim v, quyn hn v c cu t chc ca B Xy dng.

- Xt ngh ca Vin trng Vin Vt liu Xy dng ti cng vn s 360 / VLXD-KHKT ngy 5 / 10 / 2004 v V trng V Khoa hc Cng ngh

quyt nh

iu 1. Ban hnh km theo quyt nh ny 01 Tiu chun xy dng Vit Nam :

TCXDVN 328 : 2004 "Tm tri chng thm trn c s bitum bin tnh "

iu 2. Quyt nh ny c hiu lc sau 15 ngy, k t ngy ng cng bo

iu 3. Cc ng Chnh vn phng B, V trng V Khoa hc Cng ngh, Vin trng Vin Vt liu Xy dng v Th trng cc n v c lin quan chu trch nhim thi hnh Quyt nh ny ./.

Ni nhn:

- Nh iu 3

- VP Chnh Ph

- Cng bo

- B T php

- V Php ch

- Lu VP&V KHCN

B trng b xy dng

Nguyn Hng Qun

Tm tri chng thm trn c s bitum bin tnh

Modified Bituminous Waterproofing Membranes

1. Phm vi p dng

Tiu chun ny p dng cho tm tri chng thm cng trnh trn c s bitum bin tnh bng polyme, c gia cng bng si hu c hoc/v si thu tinh.

2. Yu cu k thut

Cc ch tiu k thut ca tm tri chng thm bitum bin tnh c qui nh trong bng 1.Bng 1: Cc ch tiu k thut ca tm tri bitum bin tnh

Ch tiu k thutMc theo dy

2mm3mm4mm

1. Ti trng ko t, kN/m, khng nh hn

Dc kh

Ngang kh12

1013

1114

12

2. dn di khi t, %, khng nh hn

Dc kh

Ngang kh35

3040

3542

40

3. bn chc thng ng, J, khng nh hn2,53,04,0

4. bn nhit, 900CKhng chyKhng chyKhng chy

5. thm nc di p lc thu tnh, sau 48hKhng thmKhng thmKhng thm

tCXDVN 328 : 2004

3.Phng php th

Cc phng php th trong tiu chun ny c xy dng da theo cc tiu chun ASTM D 2523 - 00, ASTM D 5635 - 98, ASTM D 5147 - 02a, ASTM D 4551 96.

3.1 Ly mu

Mi l sn phm (qui nh n 3000m2) ly 15 tm mu kch thc 300mm x 300mm 3 cun bt k. Cc tm mu c ct cch mp cun t nht 150mm, phng cc tm mu trong phng th nghim nhit (27 ( 2) 0C, m ln hn 50% trong thi gian 24h trc khi th mu.

3.2 Xc nh bn ko t v dn di: Da theo ASTM D 2523 - 003.2.1 Nguyn tc: bn ko t v dn di ca tm tri chng thm c xc nh bng lc ko t c tc ko khng i i vi mu c kch thc v hnh dng nh sn. 3.2.2 Thit b

My th ko c b phn iu chnh tc ko. Cc hm kp khng c lm hng mu khi th. My phi c b phn ghi kt qu t ng hoc c b phn ghi y cc thng s cn thit. i vi my khng c b phn ghi t ng th cn c dng c thch hp c c cc gi tr ca lc ko v dn di.

3.2.3 Chun b mu th: Ly mu theo 3.1.

Ct ti thiu 3 mu theo chiu dc v 3 mu theo chiu ngang tm nh hnh 1, mu t nht 1h nhit th nghim trc khi th mu.

Hnh 1: Kch thc v hnh dng mu th

(Tt c cc kch thc u tnh bng mm)

6

TCXDVN 328: 20043.2.4 Tin hnh th

Kp mu th vo tm hm my th ko sao cho ng vo phn vch nh du phn kp mu. Cho my hot ng vi tc ko khng i 1,3mm/pht. Khi ng my v cc dng c o, cho my chy cho ti khi t mu, ghi li cc kt qu cn thit.3.2.5 La chn kt qu

Loi b kt qu ca nhng mu b t ngoi vng nh du v mu c kt qu bn ko t v dn di khi t sai lch 20% so vi gi tr trung bnh ca t mu. Nu trong 3 mu c mt mu b loi th lm li mt mu, nu trong 3 mu c 2 mu b loi th phi lm li c 3 mu.

3.2.6 Tnh ton kt qu

3.2.6.1 Ti trng ko t: L gi tr ti trng c ghi li trn ng h o ca thit b khi mu b t, tnh bng kN/m.

3.2.6.2 dn di

dn di c tnh theo cng thc:

D = (l - lo)100/ lo

Trong :

D: dn di khi t, tnh bng %

l: Chiu di ca phn nh du mu ngay trc khi t, tnh bng mm

lo: Chiu di ca phn nh du mu trc khi ko, tnh bng mm

3.2.7 Bo co kt qu

Ti trng ko t v dn di ti thi im t l gi tr trung bnh cng ca t nht 3 mu th.

Kt qu th nghim c ghi y cc thng tin v mu th bao gm: loi, ngun gc, chiu dy, chiu ct mu, s mu, m, nhit v tiu chun th mu.

3.3 Xc nh bn chc thng ng: Da theo ASTM D 5635 - 98

3.3.1 Nguyn tc: bn chc thng ng ca tm tri chng thm c xc nh bng phng php ri u p c kch thc v khi lng xc nh trc vi khong cch khng i.3.3.2 Thit b

3.3.2.1 Dng c o bn chc thng ng: Dng c o chc thng ng bao gm mt chn nng, mt cnh tay n ri v mt u p (xem hnh 2). Cnh tay n ri tip xc vi nn sao cho n c th quay t do t v tr thng ng n v tr nm ngang. Chiu di ca cnh tay n l 510mm, dung sai tng i (0,5%.

TCXDVN 328: 2004

Dng c th c kt hp thnh mt c cu cho php u p gi n nh v tr thng ng, sai lch cho php to thnh mt gc khng vt qu 50. C cu ny s gii phng cnh tay n n ri t do m khng c thm mt chuyn ng ph no. B cnh tay n v u p c t trn b mt nm ngang n nh. B mt ny khng c rung, lc hoc c nhng chuyn ng khc khi tin hnh th ngay c ti thi im nng lng va p ln nht. Kch thc v hnh dng u p c ghi hnh 3.

Tm m rn, nng c chiu di v chiu rng ln hn so vi mu kim tra v tm lt t mu t nht 50mm.3.3.2.2 Khung t mu: Mt khung t mu c kch thc ngoi 250mm x 250mm v kch thc trong v 200mm x 200mm v c khi lng ti thiu 2,5kg c s dng gi mu t trn th trong qu trnh th mu. B mt di ca khung gi mu c gn cht bng giy rp c mi mn trung bnh.

3.3.3 Chun b mu th: Ly mu theo 3.1.

Kch thc ca cc mu th v tm lt t mu l 250mm x 250mm. Cc mu th v tm lt c ct bng khun kim loi c kch thc to sn. Chun b sn 12 mu th sn sng cho vic kim tra li.

Tt c cc mu th c t nhit phng th nghim t nht trong 8h trc khi tin hnh th.

3.3.4 Tin hnh th

Xit cht mu tm tri ln nn th bng khung gi mu. La chn khi lng u p 0,5kg; 0,6kg hoc 0,8kg cho mu th c chiu dy tng ng 2mm, 3mm hoc 4mm. Lp t cnh tay n v u p c khi lng tng ng vi mu th sao cho u p gia tm ca b mt mu th. Nng cnh tay n v u p n v tr thng ng, ri t do ln b mt mu. Quan st mu th xc nh kt qu th.

Nu th trn cng mt tm phi dch chuyn mu v tm lt khong cch t nht l 25mm sao cho u p khng va p vo ch p ban u.

3.3.5 Kt qu th

Nng lng chc thng ng tnh theo cng thc:

E = mgH

Trong :

E l Nng lng chc thng ng, tnh bn

m l khi lng u p, tnh bng kg

g l gia tc trng trng, tnh bng m/s2

H l chiu cao ri ca u p, tnh bng m

Hnh 2: Dng c o bn chc thng ng

d.Picture.8

Hnh 3: Hnh dng v kch thc u p

TCXDVN 328: 2004

Nu 2/3 khng b chc thng, kim tra thm 1 mu. Nu mu lm thm khng b thng, mu th t tiu chun. Nu mu lm thm b thng, lm li c 3 mu theo trnh t ban u. Nu 2/3 mu b chc thng, mu th khng t tiu chun.

3.3.6 Bo co kt qu

bn chc thng ng l nng lng va p tng ng vi khi lng u p chn m ti c 3 mu th khng b chc thng.

Kt qu th nghim c ghi y cc thng tin v mu th bao gm: loi, ngun gc, chiu dy, s mu, m, nhit v tiu chun th mu.

Ghi y cc thng tin v tm nn bao gm: loi, ngun gc, ni sn xut v chiu dy.

3.4 Xc nh bn nhit: Da theo ASTM D 5147 - 02a

3.4.1 Nguyn tc: bn nhit ca tm tri bitum bin tnh c nh gi bng kh nng chu nhit nhit nht nh.

3.4.2 Dng c v thit b

Kp mu c mt kp nhn v rng t nht 50mm.9

Gi treo mu bng g hoc kim loi.

T sy c kh nng iu chnh nhit ti a 1500C.

3.4.3 Chun b mu th: Ly mu theo 3.1.

Mu c ct theo kch thc 50mm x 75mm. Mi ln kim tra t nht 3 mu theo chiu dc v 3 mu theo chiu ngang.

3.4.4 Tin hnh th

t nhit t sy (90 ( 1)0C.

Kp mi mu vo mt kp, 3 mu theo chiu ngang v 3 mu theo chiu dc, treo l lng mu trong t sy.

mu trong t sy 2h00 ( 5 pht nhit (90 ( 1)0C. Quan st cc mu c du hiu chy, chy nh git hoc to thnh git pha di ca mu hay khng. Nu khng quan st thy cc du hiu trn c 3 mu th mu th t yu cu.

3.4.5 Bo co kt qu

Bo co kt qu mu t yu cu l nhit 90 0C m c 3 mu th khng b chy, chy nh git hoc to thnh git pha di ca mu.

Kt qu th nghim c ghi y cc thng tin v mu th bao gm: loi, ngun gc, chiu dy, s mu v tiu chun th mu.3.5 Xc nh thm nc di p lc thu tnh: Da theo ASTM D 4551 - 963.5.1 Nguyn tc: bn thm nc ca tm tri chng thm c xc nh bng p lc thu tnh ca ct nc c chiu cao qui nh.

3.5.2 Chun b mu th: Ly mu theo 3.1.

TCXDVN 328: 2004

Mu c ct theo kch thc 100mm x 100mm, mi ln kim tra t nht 3 mu.

3.5.3 Dng c

ng hnh tr bng kim loi hoc nha c ng knh trong 50mm, cao 610mm.

Keo silicon.

Gi t mu.

3.5.4 Tin hnh th

Gn cht ng th xung b mt cm th nc ca mu bng keo silicon. t mu ln gi bng li st. y nc vo ng th v m bo mc nc ny trong sut qu trnh th. 3.5.5 nh gi kt qu

mu di p lc thu tnh 48h, quan st nu c bt k vt m hoc git nc no mt di mu l mu khng t yu cu.

Kt qu th nghim c ghi y cc thng tin v mu th bao gm: loi, ngun gc, chiu dy, s mu, m, nhit v tiu chun th mu.

10

Tiu chun Xy dng vit nam TCXDVN 328: 2004

r = 63,5

76,2

30,69

88,9

77,8

50,8

50,8

25,4

nh du im o

50mm

50mm

0,2mm

20o

254,0

_1151738781.doc