Bi

gi

ng

in

t -

B

mn

Vt

liu

xy

d

ng

TRNG I HC XY DNG - B MN VT LIU XY DNG -

1. Khi nim v phn loi

Chng 8 CHT KT DNH HU C

Bi

gi

ng

in

t -

B

mn

Vt

liu

xy

d

ng 1. KHI NIM V PHN LOI

I. Khi nim II. Phn loi

2

Bi

gi

ng

in

t -

B

mn

Vt

liu

xy

d

ng 1. KHI NIM V PHN LOI

I. Khi nim II. Phn loi

3

I. KHI NIM B

i g

ing

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n t

- B

mn

Vt

liu

xy

d

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Khi nim Phn loi u nhc im 4

I.1. Khi nim

- CKD c thnh phn ch yu

l nhng hp cht hir-

ccbon cao phn t v mt s

hp cht hu c khc

I.2. Nguyn liu sn xut

- Sn phm ngun gc hu c

(Du m, than , bn)

Nha cn

Cht kt dnh hu c

I. KHI NIM B

i g

ing

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n t

- B

mn

Vt

liu

xy

d

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Khi nim Phn loi u nhc im 5

I.3. c im

- Vt liu gn kt c ngun gc t cc hp cht hu c.

- Tn ti dng cng, qunh hoc lng v mi th cng do khi un

nng hoc ha tan trong dung mi thch hp.

- Hn hp lng ca cht kt dnh hu c sau khi qu trnh thay i vt l

hoc qua qu trnh ha hc n gin chng s ng rn li v c cng

.

- C kh nng trn ln vi cc vt liu khong ri rc v trong qu trnh

ng rn c th gn kt chng to thnh vt liu nhn to.

- Thng c s dng trong kt cu o ng mm, lm vt liu cch

nc hay vt liu lp.

Bi

gi

ng

in

t -

B

mn

Vt

liu

xy

d

ng 1. KHI NIM V PHN LOI

6

I. Khi nim II. Phn loi

II. PHN LOI B

i g

ing

i

n t

- B

mn

Vt

liu

xy

d

ng

Khi nim Phn loi u nhc im

II.1. Theo thnh phn cu to ha hc

7

- Nhm cht kt dnh thuc h Asphalt:

+ Bitum: cc nhm cht du, cht nha, cht asphalt, nhm ccbon v

ccbonit, nhm axit asphalt v anhidrit.

+ Gudrng: cc nhm cht du gurng, cht nha mm hoc rn, cht

asphalt, nhm ccbon t do, nhm naftalen, nhm phenol v antraxen.

- Polyme: ngun gc l cc monome hu c

- Keo hu c :

+ Keo ng vt: keo kazein sn xut t lng trng trng ca cc loi ng vt...

Khc vi Telatin c sn xut t da ng vt (ln, g...)

+ Nha thc vt: mang c trng ca CKD nh nha cy sn, cy thng, cy

sn thuyn...

II. PHN LOI B

i g

ing

i

n t

- B

mn

Vt

liu

xy

d

ng

Khi nim Phn loi u nhc im 8

II.2. Theo ngun gc cu to ca nguyn liu

- Bitum du m: l sn phm cui cng ca cng ngh lc du m

- Bitum du (bitum hc n): l sn phm khi chng ct t du

- Bitum thin nhin: c hnh thnh v tn ti trong thin nhin dng tinh

khit hoc ln vi cc loi (h, m bitum)

- Gurng than : l sn phm qu trnh chng kh than

- Gurng than bn: l sn phm qu trnh chng kh than bn

- Gurng g: l sn phm qu trnh chng kh g

II. PHN LOI B

i g

ing

i

n t

- B

mn

Vt

liu

xy

d

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Khi nim Phn loi u nhc im 9

- Bitum v gurng rn: nhit 20-250C l cht rn, c tnh gin v n

hi, khi nhit 180-2000C chuyn sang dng lng.

- Bitum v gurng qunh: nhit 20-250C l cht mm, c tnh do

cao, n hi km.

- Bitum v gurng lng: nhit 20-250C l cht lng, c thnh phn

gm cc hidrocacbon nh v d bay hi, c kh nng ng c li thnh

dng qunh khi cc thnh phn ny bay hi.

- Nh tng Bitum v gurng: l mt h thng keo gm cc ht CKD phn

tn trong mi trng nc v cht nh ha (cht ha tan).

II.3. Theo tnh cht xy dng hay trng thi tn ti