Chi Dan Thi Cong Va Nghiem Thu Gach AAC

B XY DNG

CH DN K THUT

THI CNG V NGHIM THU

TNG XY BNG BLC B TNG KH CHNG P

H NI 2011

Thi cng v nghim thu khi xy b tng kh chng p CDKT

3

Mc lc

1 Phm vi p dng ...................................................................................................................5 2 Ti liu vin dn....................................................................................................................5 3 Quy nh chung.....................................................................................................................5 3.1 Thc hin cc quy nh ca thit k ...................................................................................5 3.2 Thc hin cc quy nh v thi cng v nghim thu.............................................................5 4 Chn blc AAC v va xy, trt ............................................................................................6 4.1 Chn blc AAC ..................................................................................................................6 4.2 Chn va xy, trt..............................................................................................................6 5 Thit b, dng c thi cng ......................................................................................................7 6 Trnh t thi cng khi xy b tng kh chng p ...................................................................7 6.1 Vn chuyn v bo qun....................................................................................................7 6.2 Trn va ............................................................................................................................7 6.2.1 Trn va xy, trt thng thng......................................................................................7 6.2.2 Trn va xy mch mng, va trt chuyn dng cho blc AAC......................................7 6.3 Xy hng u tin ..............................................................................................................8 6.4 Xy cc hng tip theo.....................................................................................................10 6.4.1 Xy bng va thng thng .........................................................................................10 6.4.2 Xy bng va mch mng ............................................................................................10 6.5 t ct thp trong tng xy............................................................................................10 6.6 Cng tc trt ....................................................................................................................11 6.6.1 Trt tng trong nh .....................................................................................................11 6.6.2 Trt tng ngoi nh ....................................................................................................12 6.6.3 Trt chng nt cc v tr tip gip vi tng xy ...........................................................12 7 Cc chi tit lin kt ..............................................................................................................13 7.1 Lin kt tng tng ....................................................................................................13 7.2 Lin kt tng ct .........................................................................................................13 7.3 Lin kt nh tng - dm dn .........................................................................................14 7.4 t h thng k thut ngm tng...................................................................................14 7.5 Chng thm khu dng nc.............................................................................................15 7.6 To khe co dn trn tng...............................................................................................16 7.7 Treo trn tng AAC...................................................................................................17 8 Nghim thu .........................................................................................................................17 8.1 Nghim thu vt liu ..........................................................................................................17 8.2 Nghim thu tng xy......................................................................................................17 Ph lc A ..................................................................................................................................18 Ph lc B ..................................................................................................................................19 Ph lc C..................................................................................................................................21 Ph lc D..................................................................................................................................26

CDKT Thi cng v nghim thu khi xy b tng kh chng p

4

Li ni u

Ch dn k thut ny do Vin Khoa hc Cng ngh

Xy dng bin son, V Khoa hc cng ngh v

mi trng ngh, B Xy dng ban hnh theo

Quyt nh s /Q-BXD ngy thng nm

2011.


5

1 Phm vi p dng

Ch dn k thut (CDKT) ny p dng cho cng tc xy, trt v nghim thu cc tng xy bng

blc b tng kh chng p (AAC).

2 Ti liu vin dn

Cc ti liu sau l cn thit cho vic p dng ch dn k thut. i vi cc ti liu vin dn ghi nm

ban hnh th p dng bn c nu. i vi cc ti liu vin dn khng ghi nm ban hnh th p

dng phin bn mi nht, bao gm c cc sa i, b sung (nu c).

TCVN 3121 : 2003 Va xy dng Phng php th.

TCVN 4085 : 1985 Kt cu gch Quy phm thi cng v nghim thu .

TCVN 4314 : 2003 Va xy dng - Yu cu k thut.

TCVN 7572 : 2006 Ct liu cho b tng v va Phng php th.

TCVN 7959 : 2008 Blc b tng kh chng p (AAC).

3 Quy nh chung

3.1 Thc hin cc quy nh ca thit k

Khi xy, trt tng AAC, cn c thc hin ng cc quy nh sau ca thit k:

- Mc (hoc cp), khi lng th tch ca AAC;

- Loi, mc va xy, va trt;

- Chiu dy tng;

- t ct thp trong khi xy;

- Cc lin kt gc tng v tng vi kt cu khc;

- Cu to chng thm tng;

- Cu to khe co dn trong tng;

- V cc quy nh khc.

3.2 Thc hin cc quy nh v thi cng v nghim thu

- Cng tc xy, trt v nghim thu tng xy bng blc AAC, nu khng c ch nh khc ca

thit k, c thc hin theo ch dn k thut ny;

- Khi xy bng va xy mch mng nn dng cc blc AAC kh; Khi xy bng va xy thng

thng nn lm m mt blc AAC ngay trc khi ri va xy. Khng ngm hoc ti t

cc blc AAC trc khi xy;


6

- Khi trt, nn thc hin lp trt trn tng AAC kh c lm m b mt, hoc qut

nc xi mng hoc c qut cht to dnh;

- Cn hn ch bc gio xuyn qua tng AAC, khng c bc gio t vo tng ang xy;

- Cc quy nh khc p dng chung cho tng xy bng mi loi vin xy c thc hin

theo TCVN 4085 : 1985 Kt cu gch Quy phm thi cng v nghim thu.

4 Chn blc AAC v va xy, trt

4.1 Chn blc AAC

- Cc ch tiu k thut ca blc AAC thng c cc c s sn xut cng b theo mt trong

cc tiu chun sau:

+ TCVN 7959 : 2008 Blc b tng kh chng p (AAC);

+ Tiu chun nc ngoi (v d tham kho ti Ph lc A);

+ Tiu chun c s ca ngi sn xut.

- Cn c qui nh ca thit k (thng gm mc, khi lng th tch ca blc AAC, chiu dy

tng xy); i chiu cc ch tiu k thut ca AAC c cc c s sn xut cng b, chn

loi, kch thc blc AAC ph hp.

4.2 Chn va xy, trt

Cn c qui nh ca thit k (thng gm loi v mc va), chn va nh sau;

- Va xy blc AAC dng mt trong cc loi sau:

+ Va xy thng thng: Nh va xy gch t st nung, ph hp TCVN 4314 : 2003 Va xy dng - Yu cu k thut (xem Ph lc B);

+ Va xy mch mng: Va chuyn dng xy blc AAC, thng c mc 25 n 100, mch va dy 1 n 5 mm, c ch to bng xi mng, cht to do, keo hu c, ct

hoc cht n mn; mt s loi va mch mng ang s dng tham kho Ph lc B.

- Va trt khi xy AAC dng mt trong cc loi sau:

+ Va trt thng thng: Nh va trt tng gch t st nung (trong trng hp cn tng bm dnh c th thm cht to dnh);

+ Va trt chng thm: Va trt c thm chc nng chng thm (hoc dng va trt thng thng kt hp vi lp chng thm ring).


7

5 Thit b, dng c thi cng

Mt s thit b v dng c thng dng dng xy, trt tng blc AAC tham kho Ph

lc C.

6 Trnh t thi cng khi xy b tng kh chng p

6.1 Vn chuyn v bo qun

- Blc AAC khi vn chuyn ti cng trnh nn ng thnh kin trn lp y cng, xung quanh

v np kin bc nilon kn v ai cht trnh ma v gi kin n nh trong qu trnh vn

chuyn;

- Kin blc AAC nn xp d bng xe c tay nng. Khi dng cu th nn dng dy mm v

trnh dy c st vo thnh kin gy st blc;

- Kin blc AAC cn c bo qun ni kh ro, trn nn bng phng, vng chc. C th

xp mt hoc nhiu kin chng ln nhau theo ch dn ca ngi sn xut (thng khng

nn cao qu 2,5 m);

- Ti cng trng, nu cha dng ngay, nn gi li phn np v m phn nilon bc xung

quanh kin lm kh thm blc;

- Tho np y kin AAC khi bt u s dng blc xy.

6.2 Trn va

6.2.1 Trn va xy, trt thng thng

Thc hin theo TCVN 4085 : 1985 Kt cu gch Quy phm thi cng v nghim thu (ging nh trn va xy gch t st nung).

6.2.2 Trn va xy mch mng, va trt chuyn dng cho blc AAC

Khi dng blc AAC vi sai lch kch thc nh (ct blc bng my) th dng va xy mch

mng hiu qu hn v tc xy v cht lng tng xy.

Trn va theo trnh t sau:

- nc vo thng trn (tt nht dng thng nha). Lng nc theo hng dn ca nh

sn xut hoc ghi trn v bao va;

- Dng my khuy chuyn dng hoc my khoan cm tay kp cnh khuy, va khuy va t

t va kh vo thng trn;

- Khuy trn lin tc cho n khi hn hp va do u (nhn thy u mu, khng cn bt

va kh, khng cn vn cc;


8

- Sau 10 n 15 pht khy thm mt ln. Trong qu trnh xy, va do u c th khy

trn li;

- Va kh cha dng ti c bo qun trong bao kn nh bo qun xi mng bao.

6.3 Xy hng u tin

Xy hng u tin c bit quan trng. Hng u tin nu c xy vi thng v

ngang bng cng cao th cng d xy cc hng tip theo.

Xy hng u tin theo trnh t sau:

- V sinh v lm m b mt phn nn s xy

tng;

- Bt mc ly phng mch va u tin;

- Cng dy ly thng hng xy u tin;

- Ri u va theo mc bt. Nu nn khng

phng th c th dng va xi mng ct (mc

tng ng) cn to phng mch va u

tin (xem Hnh 1);

- t blc u tin, dng tay day blc xung

mch va pha di v p blc vo mt bn

ng thi chnh blc thng theo dy cng

(xem Hnh 2);

- Dng ni v kim tra ngang bng ca blc

xy, dng ba cao su chnh bng nu blc

b nghing (xem Hnh 3);

Hnh 1 - Ri va xy tng

1

2

Hnh 2 - t blc u tin

Hnh 3 - Kim tra v cn chnh bng v thng ng ca blc


9

- Xy blc k tip: dng gu ri

va ph u va ln mt cnh

ca blc xy; dng tay day

hoc ba cao su p blc

xung mch va pha di v

vo mt pht va ca blc

xy trc, ng thi chnh

thng blc theo dy cng (xem

Hnh 4); dng ni v v ba cao

su kim tra v cn chnh

ngang bng ca blc mi xy;

1

2

Hnh 4 - Xy blc tip theo

- Tip tc nh vy n blc cui hng, o

khong cch cn li nu khng va c

blc th ct blc cho va khong cch

cn li (xem Hnh 5);

- Ph va kn hai mt cnh ca blc cui

cng, t v chnh ngang bng blc ny

nh cc blc trc;

Hnh 5 - o khong cch ct blc

- Mi phng mt ton b hng xy bng bn

ch nhm loi b s git cp gia cc

blc (xem Hnh 6);

CH : Nu gia cc blc khng c mi phng th

ch git cp d bi nt cc b.

- Dng chi, bn chi v sinh sch bi bm

trn b mt hng blc c mi phng

v chun b xy hng tip theo.

Hnh 6 - Mi b mt blc


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6.4 Xy cc hng tip theo

6.4.1 Xy bng va thng thng

Thc hin xy cc hng tip theo nh xy gch t st nung.

6.4.2 Xy bng va mch mng

Trnh t xy cc hng tip theo bng va mch mng nh sau:

- Blc u hng tip theo cn chn c chiu di ph hp mch va ng ca hng ny

so le vi hng pha di (nn l 8 cm n 12 cm);

- t gu ri va ln trn hng xy di (nn chn gu ming rng bng hng xy), va

vo gu ri va;

- Ko gu dc hng xy, ri va ln mt (xem

Hnh 7);

- t 2 blc 2 u ca hng xy, dng thc

p hng xy di chnh ng, dng ni v

v ba cao su chnh ngang bng v cao

blc nh lm vi hng xy u tin;

- Da vo 2 blc u hng, cng dy ly

thng cho c hng xy;

- Xy cc blc k tip, blc cui cng, mi

phng v v sinh hng xy nh lm vi

hng xy u tin.

Hnh 7 - Ri va trn mt hng xy

6.5 t ct thp trong tng xy

Ct thp trong tng xy (thng hn

ch nt) c t theo ch nh ca thit k.

Ti cao hng xy b tr ct thp ging, trnh

t thc hin nh sau:

- To cc rnh dc theo mt trn ca hng xy

bng dng c khot rnh th cng hoc bng

my (xem Hnh 8). Rnh khot cn rng

v su va xy bc kn c thanh ct

thp. C th to rnh trn cc blc trc khi

xy;

Hnh 8 - To rnh mt trn ca hng blc


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- Dng chi hoc bn chi v sinh sch rnh khot;

- o v ct thp chiu di cn thit;

- Trc khi t ct thp, ri y va (thng thng hoc mch mng) vo rnh khot;

- n thanh thp vo rnh y va, g nh trn thanh thp va bc kn na di ca

thanh, sau dng bay vun va bc quanh sn thanh;

- Ri va ln mt trn tng v ph kn ct thp t, tip tc xy hng trn.

CH 1: Ton b mt thanh thp cn c bc kn va chng g.

CH 2: Chiu cao mt t xy t 1,2m n 1,5m.

6.6 Cng tc trt

Khng nn trt ngay sau khi xy. Khi tng cn qu m do b t hoc do ma (c cc vt

m, sm mu) th cn i n khi b mt tng kh v c mu sng u th mi bt u trt.

6.6.1 Trt tng trong nh

Trnh t trt tng nh sau:

- Trm v cc vt st trn ton b b mt tng bng va xy;

- Mi b mt tng bng bn ch nhm loi b cc mp m trn mt tng (xem Hnh 9);

GHI CH: Mi phng mt tng c th trt va mng hn

Hnh 9 - Mi phng b mt tng

- Dng chi hoc bn chi qut bi bm trn tng;

- p mc cn chiu dy lp va trt. Trt va ln ton b b mt tng, sau dng thc

th (g, nhm) cn, gt to phng, cui cng xoa nhn, u b mt tng.


12

6.6.2 Trt tng ngoi nh

Trt tng ngoi cng thc hin theo trnh

t nh trt tng trong (xem 6.6.1).

Khi trt tng ngoi nh c tip xc vi

nc ma, cn trt hoc bng va chng

thm, hoc bng va thng thng, sau

sn chng thm theo ch nh ca thit k.

Hnh 10 - Trt hon thin tng

6.6.3 Trt chng nt cc v tr tip gip vi tng xy

Ti cc v tr tip gip gia tng - dm, tng - sn hoc tip gip gia tng xy vi cc

vt liu khc, nu thit k ch nh phi dn li chng nt (thng dng vi si thy tinh chu

kim) th thc hin lp trt ny theo trnh t sau:

- Trt b lp va lt do, mng, u vo vng dn li;

- Cng u, dn li vo lp va lt thng chm sang mi bn 100 mm. Dng bn xoa v

ln mt li cc si ca li dnh hon ton ln b mt lp va;

- Trt b kn li si thy tinh bng lp va lt th 2.

GHI CH: Trng hp thit k yu cu dng li thp (thng dng thp 1 mm, a 20 mm) th cng li thp ln vng cn chng nt, dng inh (t 3 n 5 cm) ghim li ln tng. i vi phn b tng c th ghim li bng

inh thp (2 n 3 cm) hoc khoan bt vt n mt (300 400) mm / ci (xem Hnh 11).

100 100

1

2

100 100

100

100

1

2

43

GHI CH:

1. Ct b tng ct thp; 2. Li chng nt;

3. Blc AAC; 4. inh hoc vt (mt 300 mm/ci).

Hnh 11 - Ghim li thp chng nt


13

- Sau khi ghim li chng nt, tin hnh trt va nh trnh t nu 6.7.1.

7 Cc chi tit lin kt

7.1 Lin kt tng tng

Cc gc tng c xy so le vi nhau (xem Hnh 12).

Hnh 12 - Lin kt gc tng

7.2 Lin kt tng ct

Trng hp thit k ch nh dng thp thanh

lin kt tng AAC vi ct th trnh t thc hin nh

sau:

- Khoan to l cc v tr cn lin kt, ng knh

l khoan phi ln hn ng knh thanh 3 mm

n 5 mm, chiu su khong 100 mm;

- V sinh sch l khoan bng kh nn;

- Bm keo (thng dng epoxy) vo l khoan,

sau ng thp neo vo su ht l khoan,

phn thp neo trong tng khong 700 mm

(xem Hnh 13).

GHI CH: Ct thp neo cn c ph kn va xy chng g.

1

2

GHI CH:

1 Thp neo 2 L khoan

Hnh 13 - Chn thp neo bng keo


14

7.3 Lin kt nh tng - dm dn

Khi thit k khng c yu cu g v lin kt

tng vi dm sn pha trn hoc yu cu

chn va, vt liu xp th lm nh sau:

- Khi xy st trn, ct blc chiu dy ph

hp mt trn ca hng blc cui cng

cch y sn (hoc dm) b tng mt

khong (thng khong 50 mm nu chn

va, di 50 mm nu chn bt xp hoc

vt liu mm);

- Chn khe h nh tng hoc bng va xi

mng ct (thng t l 1 : 3) n cc mnh

b tng kh hoc bng bt xp theo quy

nh ca thit k;

- Ghim hoc dn li chng nt (nu c);

- Trt hon thin lin kt nh mc 6.6.3.

5010

010

0

1

2

3

GHI CH:

1 Blc b tng kh chng p;

2 Li chng nt

3 Va xi mng ct hoc bt xp;

Hnh 14 lin kt nh tng dm sn

7.4 t h thng k thut ngm tng

To l, x rnh lp t h thng k thut

ch nn bt u sau khi xy xong tng t 1 n

2 ngy. Trnh t thc hin nh sau:

- o v nh du cc v tr cn to rnh, v tr

cn khot l (xem Hnh 15);

Hnh 15 - nh du v tr khot rnh, l

Hnh 16 - Ct theo ng nh du

- Dng my ct cm tay ct theo ng k

nh du. Chiu su ng ct khng nn

qu 1/3 chiu dy blc b tng (xem Hnh

16);


15

- Dng dng c khot rnh to rnh lp

t ng in, nc; dng my khoan

c to l lp in (xem Hnh 17);

1

2

Hnh 17 - Khot rnh, khoan v c l in

Hnh 18 Ghim hoc dn li chng nt

- Lp t in, h thng ng ng in,

nc, sau trm y va vo phn

rnh, l lp xong ng in, nc;

- Ghim hoc dn li chng nt nh nu

6.6.3 (xem Hnh 18) nu thit k yu cu;

- Trt hon thin chi tit nh nu 6.6.

7.5 Chng thm khu dng nc

Trng hp thit k ch nh dng lp sn chng thm nc cho sn v mt tng th

thc hin theo trnh t nh sau:

- Trm y cc mch va b khuyt,

cc vt lm v cc khe h sau khi

xy v lp t h thng k thut,

thit b ngm trong tng;

- Mi phng v v sinh b mt tng

- Quyt sn chng thm (lp lt, lp

ph theo ch dn ca nh sn xut

sn;

- p mc v trt phng tng;

- p gch mt tng (xem Hnh 19).

1

2

3

4

GHI CH:

1 Blc AAC; 2 Lp chng thm;

3 Va p gch; 4 Gch p;

Hnh 19 - Chi tit chng thm khu dng nc


16

7.6 To khe co dn trn tng

i vi cc bc tng di (thng 6 m) thit k c th yu cu to mt khe co dn ( mt

bn tng hoc xuyn tng). Trnh t thi cng khe co dn thng dng nh sau:

1 2

1/3

dd

a

GHI CH:

1 Khe co dn to trong qu trnh xy;

2 Blc AAC;

3 Khe co, dn to bng my ct

Hnh 20 - To khe co, dn

- To khe: Khe co dn xuyn tng

c to ngay trong qu trnh t

blc xy (xem Hnh 20. 1); Khe co

dn mt bn tng c to

bng my ct (xem Hnh 20. 3);

GHI CH: Chiu su khe thng ct ln hn

1/3 chiu dy ca tng. Chiu rng khe theo

thit k (thng 10 mm i vi khe mt bn,

20 mm n 30 mm i vi khe xuyn tng).

- Chn khe co dn xuyn

tng bng cc vt liu

mm (thng l tm xp,

xem Hnh 21); trt va hai

bn khe;

GHI CH:

1 Xp chn khe; 2 Blc AAC; 3 Va trt tng.

Hnh 21 - Chn khe ln v khe co, dn

- Xm keo hoc bt mt

ngoi khe.

Khe co dn thng c

xm bng vt liu n hi

(thng l polyuretan), cn

khe xuyn tng thng c

bt ngoi bng cc bng n

hi hoc tm c m dn n

(xem Hnh 22).

GHI CH:

1 Vt, inh khong cch 30 cm/ci; 2 Tm y khe ln;

3 Keo n hi; 4 Xp chn khe

Hnh 22 - Ph, y khe ln, xm keo khe co dn


17

7.7 Treo trn tng AAC

Trng lng, cch lin kt vt treo ln tng theo ch nh ca thit k hoc do ngi sn

xut blc AAC quy nh.

Mt s loi vt treo thng dng tham kho Ph lc D.

8 Nghim thu

8.1 Nghim thu vt liu

i chiu vi yu cu ca thit k v blc AAC v va xy trt:

- Blc AAC c nghim thu (v khi lng th tch, mc v yu cu khc (nu c)) theo kt

qu th nghim mu thc t hoc theo chng ch th nghim ca c s sn xut blc AAC;

- Va xy, va trt c nghim thu (v mc) theo kt qu th nghim mu c hoc theo

chng ch th nghim ca c s sn xut va.

8.2 Nghim thu tng xy

Cng tc kim tra, nghim thu tng xy c thc hin theo TCVN 4085 : 1985;

Ngoi ra, tng xy bng blc AAC cn p ng thm cc yu cu sau:

- Cng tc xy, trt ph hp vi Ch dn k thut ny;

- Blc xy so le nhau trn cc hng xy lin k;

- y va ca mch ngang: 80 %;

- y va ca mch ng: 70 %;

- Cc yu cu khc v lin kt, chng thm, to khe co dn, t ngm ng ng thit

b: ph hp vi cc quy nh ca thit k.


18

Ph lc A (Tham kho)

Yu cu k thut ca blc b tng kh chng p

Bng A.1 Cng nn v Khi lng th tch ca blc b tng kh chng p (GOST 19010-82)

Mc b tng Cp b tng Khi lng th tch, kg/m3

M25 B1,5 600

M35 B2,5 700

M50 B3,5 800

M75 B5 900

M100 B7,5 1000

GHI CH 1: Mc b tng theo cng chu nn: k hiu bng ch M, l cng ca b tng, ly bng gi tr

trung bnh thng k ca cng chu nn tc thi, tnh bng n v daN/cm2, xc nh trn cc mu lp phng

kch thc tiu chun (150 mm x 150 mm x 150 mm) c ch to, dng h trong iu kin tiu chun v th

nghim nn tui 28 ngy.

GHI CH 2: cp bn chu nn ca b tng: k hiu bng ch B, l gi tr trung bnh thng k ca cng chu

nn tc thi, tnh bng n v MPa, vi xc sut m bo khng di 95 %, xc nh trn cc mu lp phng kch

thc tiu chun (150 mm x 150 mm x 150 mm) c ch to, dng h trong iu kin tiu chun v th nghim

nn tui 28 ngy.

GHI CH 3: hn ch nt, co ca blc b tng kh chng p nn khng ch nh hn 0,5 mm/m.

Bng A.2 Sai lch kch thc blc AAC (GOST 19010-82)

Kch thc n v Sai lch cho php

Chiu di mm 5

Chiu rng mm 5

Chiu cao mm 5


19

Ph lc B (Tham kho)

Yu cu k thut ca va

Bng B.1 - Yu cu k thut ca hn hp va xy trt theo TCVN 4314 : 2003

Loi hn hp va

Va hon thin Tn ch tiu n

v Va xy Th Mn

Phng php th

1. ng knh ht ct liu ln

nht mm 2,5 2,5 1,25 TCVN 7572 : 2006

2. lu ng ( ln cn) cm T 410 T 610 T 712 TCVN 3121 : 2003

3. phn tng i vi va do cm3 30 - - TCVN 3121 : 2003

4. gi nc i vi:

- Hn hp va xi mng

- Hn hp va vi v cc va

hn hp khc

%

%

63

75

-

-

-

- TCVN 3121 : 2003

5. Thi gian bt u ng kt pht 25 25 25 TCVN 3121 : 2003

Bng B.2 - Yu cu k thut ca va xy, trt ( rn chc) theo TCVN 4314 : 2003

Mc va Cng nn trung bnh nh nht, MPa

Cng nn trung bnh ln nht, MPa

Phng php th

4

10

25

50

75

100

0,4

1,0

2,5

5,0

7,5

10,0

0,9

2,4

4,9

7,4

9,9

14,9

TCVN 3121 : 2003


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Bng B.3 Ch tiu k thut ca va mch mng (ASTM C1660-09)

S TT Cng nn ca AAC, MPA Cng chu ko khi un, khng

nh hn, MPa

1 2 0,28

2 3 0,34

3 4 0,40

4 6 0,49


21

Ph lc C (Tham kho)

Mt s thit b v dng c thi cng

C.1 My trn va chuyn dng cm tay:

Bng C.1 Thng s k thut ca my trn va chuyn dng cm tay

Tn c tnh n v Thng s k thut

S trc khuy - 1 2

Cng sut Watt 1200 1350

in p V 220 220

ng knh cnh khuy ti a mm 120 120

Trng lng kg 5,5 6,8

Tc vng quay vng/pht T 0 n 180

T 0 n 620 T 0 n 480

Hnh C.1 - My trn va chuyn dng cm tay

C.2 Cnh khuy: Thanh trc lm bng thp trn, cnh khuy lm bng thp tm dy 1 mm.

Hnh C.2 - Cnh khuy

C.3 My khoan cm tay: Nn chn chn loi my c cc thng s k thut sau:

- Cng sut: t 500 W n 1500 W

- Tc : a cp


22

- Va p (ba): c hoc khng;

- u kp: 3 chu (mng ranh) hoc kp bi

Hnh C.3 - My khoan cm tay

C.4 Dng c to l, mi khoan:

Hnh C.4 - Dng c to l, mi khoan

C.5 My ct cm tay:

Hnh C.5 - My ct cm tay


23

C.6 Dng c khot rnh:

Hnh C.6 - Dng c khot rnh

C.7 My ct bn:

Hnh C.7 - My ct bn

C.8 Ca cm tay:

Hnh C.8 - Ca cm tay


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C.9 Dng gc: lm bng thp l hoc thp gc dy t 2 mm n 4 mm

Hnh C.9 - Dng gc

C.10 Gu ri va: c lm t thp tm dy 1,5 mm n 2 mm vi chiu cao cc rng t 5 n 7 mm, khong cch gia cc rng t 8 mm n 10 mm.

Hnh C.10 - Gu ri va

C.11 Phu ri va: c lm bng tn hoc thp tm dy 0,5 mm n 1mm, c b rng

bng b rng ca tng AAC.

Hnh C.11 - Phu ri va


25

C.12 Bn gt va: lm bng thp bn hnh ch nht 15 x 30 cm, cnh c rng

ca, dng san, gt va u trn

mt blc b tng kh chng p.

Khong cch gia cc rng t 8 n

10 mm, cao t 5 n 7 mm.

Hnh C.12 - Bn gt va

C.13 Bn ch nhm: lm bng g ging bn xoa th xy, trn mt tm g phng c gn cc si thp nh di t 5 mm n 10 mm hoc dn giy gip ht th.

Hnh C.13 - Bn ch nhm

C.14 Ba cao su: c u ba bng cao suc hnh tr, ng knh t 6 cm n 8

cm, cao t 10 cm n 14 cm, cn ba

di t 30 cm n 40 cm.

Hnh C.14 - Ba cao su

C.15 Thc ni v:


26

Hnh C.15 - Thc ni v

Ph lc D (Tham kho)

inh, vt

Bng D.1 Mt s loi vt, inh v v tr khuyn co s dng

Tn Hnh dng V tr s dng

Vt

Dng vt g, treo ni tht

Cht cho b tng nh

Lp ni tht, rm, iu ha,

khung ca s v ca i

N nha

C nh khung ca s ca i

Cht neo C nh g, khung ca

inh Lin kt mm mi mt blc

Documents

Chi Dan Thi Cong Va Nghiem Thu Gach AAC