Rating of a Cement-Base Surface Waterproofer Compared with Two Reference Materials

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Rating of a Cement-Base Surface Waterproofer Compared with Two Reference Materials

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NATIONAL RESEkRCH COlTWCIL

CANADA

R A T I N G OF A CEiiBhiT-BASE STTRFACG WATERPROCIFER

COMPARED WITH TWO RYFERENCE MTkdRIALS

by E.W.Meumann and E.G.Swenson

R P ! r ? , t y ~ s ~

(Prepared f o r Central Mortgage end Housing Co~poratfon)

NOT FOR PWBLICATIOW

Report No.

42

of the

Dlvf

si _{on of}_Buf_lding_Reatearah

Ottawa Auguat 1954

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R A T I N G Oh' A CEtdEPdT-USE SURFACG WATUHPHUOi7SR COI+I?HHGID WITH. TWO RliI{'E-MGMCE LLATEHIALS

by E.W.Neumann and E,G.Swenaon

'Phis r e p o r t may be eonsidered a e a supplement t o D i v i s i o n of Building Raeearoh r e p o r t 8 numbers

R-19

and

R-3s.

The

method of t e s t used t o r a t e t h e m a t e r i a l deaoribed i n t h i s

r e p o r t I s t h e same a s t h a t g i v e n i n the above-mentioned r e p o r t s . The p r o p r i e t a r y m a t e r i a l r a t e d i s designated "p and was submitted t o the D i v i s i o n of Buf l d i n g Reaearclr by C e n t r a l Blortgage and Housing Corporation.

2. Sample

'Jtt is deaesibsd a ? 8 m a t e r i a l whioh i e composed o f

a o i e n t i f i o a l l y compounded i n o r g a n i c

rna

_{t e r i a l s ground} _to_a

f i n e powder and oapable, when mixed w i t h water, of filling poses and having a hard, denme, l o n g - l a s t i n g , Insoluble bond, It 5 a r e o o m n d e d f o r porous masonry below grade, i n s i d e o r o u t s i d e , where water p ~ o b l e q a a r e enoountsred and f o r a l l c o l o u r jobs,

"Jn i s mixed w i t h water and a p p l i e d by brush t o .a p r e v i o u s l y wetted surfaoe. The eeoond ooat i a a p p l i e d w l t h 9 0 t o

36

bows,

P o r t l a n d arsmnt p a s t e , mixed t o a creamy c o n a i r t e n c y and a p p l i e d by bruah t o a wetted aurfaaa, wae ured a a aa r e f e r e n o e m a t e r i a l .

A mixture of 1 p a r t p o r t l a n d usment and 1 p a r t fine eand (passing P o . 3 0 ) mixed w i t h water t o a creamy oonsiatency war ueed a s a aeoondary mferenae. T h i s was a p p l i e d i n a manner

s i m i l a r t o t h a t f o r p o r t l a n d c e m n t pa:to ( s e e

Dm R-19).

4.

_Prooedure

The method used f o r r a t i n g t h i s m a t e r i a l i s deaoribed

i n

d e t a i l i n DBR Report

R-19.

It should be noted t h a t this method does n o t determine whether a m a t e r i a l w i l l waterproof a wall; i t a purpose i s t o oompare t h e waterproofing e f f e o t i v a n e ~ s of a

p r o p r i e t a r y m a t e r i a l w i t h p o r t l a n d oernent paate brushed on a w e t t e d wall.

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Both the r e f e r e n e e m a t e r i a l a and the p r o p r i e t a r y m a t e r i a l a r e a p p l i e d i n t w o ooate, the l a t t e r auoording t o t h e manu- f a c t u r e r t s i n a t r u o t i o n a .

Flowr were neaaured f o r f o u r days end t h e r a t i n g s were o a l o u l a t e d f o r t h e f o u r t h day.

The comparative e f f i o i a n a y r a t i n g 8 shorn i n Fig. 1 were o b t a i n e d by taking t h e reciprocal of t h e measurtsd flow

i n

m i l l i l i t ~ e s p e r

15 minutes.

The value for the r e f s r s n o e

m a t e r i a l i s a r b i t r a r i l y r a t a t 1.00, the v a l u e s f o r the o t h e r r e f e r e n a e m t e r i a l and the _{p r o p r i e t a r y m a t e r i a l havinb been}

o a l c u l a t a d on t h i s b a a i s . Two o e l l r were uered f o r eaoh molGerial t e s t e d . I n eaah c a s e good r e p r o d u e l b i l l t y was obtained.

ma ter 1.00,

T h e sffioiencry r a t i n g s shorn i n P i g * 1 f o r oament p a s t e , l i a l "JW, and the crtbment-rand mixCtllrs a r e , p e r p e o t i v e l y ,

0.83,

and 0.66. Taking &nto acaount the aotuel volumsa of water involved, t h e s e d i f f e r e n c e r a r e r e l a t i v e l y amall. It may therefore be oonoluded that m a t s r l a l "Jn agproac?her but doer n o t exaeed t b e f f i a i s n a y o f o r d i n a r y uemenC p a s t e

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