Building Materials, Third Edition

w——2

2w—

2g

™Es†2v 219

g—2i%u——2v  is used for making masonry mortars, plastering and white washing.

g——™

™

(i) The colour is grey

(ii) Contains 20 per cent calcium oxide, 5 per cent magnesium oxide and remaining impurities.

(iii) Slakes and sets slowly.

g—2p%ƒ™ 2h  ™2v  used for undercoat and finishing coat of plaster.
The chemical composition and properties of these limes are given in Tables 8.1 and 8.2,
respectively.

„—˜    2VI g

    ™—2‚        

ƒ g——™

 ™ g—
2x e f g h i p
r—E ™ r ™ r ™ r r—E ™ r




@
A g—™
 TH UH UH VS VS VS VS SH UH UH
—

2

D

™
D2w2@



2˜—
A
22@

A w—

2

D

™
2@2



˜—
AD2w— T TTTT--T--
w ---- TT-TT
@

A ƒ

™—D2—
—2— PH IH IH - - - - PH IH IH


™2

D2
™
D
w2@2


2˜—
A
@
A …1—
2—

 - - - - - V V - V V


D2
™
D2w—
@2


2˜—
A
@A s˜
2


2
 IS IH IH P P P P PS IH IH


2—™
2—
——
D2
™
D2w—
@2


2˜—
A
@
A g—˜


D2
™
D S S S S S S S S S S
w—2@2
2
˜—
A
@

A p

2

2™
D P - P - P - P P - P

™
D2w—
@

A e—
—˜
2

2—2g—y - - - US2@ US2@ - - - - -

™
D2

 



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A ˜—
A