Document YrwD16dg614bVm6LNbnZ6Vqoy
MR. A. B. HOLTON. 3HERWIK-WILLIAMS CDMPAN?.
CIETELAHD.
s P gPL3MS N TA RX
November 194a - February 194?.
Pi-eoentod May. 3.94?.
-v ---------- ' ' ' '*'
.
fieriea No . 54
StTPPLEMENTAST THCBNiCAi OPERATIONS REPORT
NOT. 1940 - S'33. 1947 . 1
Page
1 a <5 lb 13 14 10 17 18 19 24 8 32 33 30
41 43 40 47 48 51 53 6B
S9 00 01 02
rtfa n o .
C .12 C .13 C .20 E .5
I'.e
X`.1S I*.17 r .ia r .ai I .25 P.3 P.40 P.54 p.ai P.8S
P.80 P. 98 P.103
>.108 P.117 P.120 P.1S1
>.12
r. 3. '.30 T. 33. r.3B
INDEX
Title
Viscosity Control Cellulose Surfaces &, stoppers. Nitrocellulose Aircraft Finishes. Permanent Red. 2,B. Cromat liaroon Lake Effect of Stoarsmid on Chronsa Green Para Reis Parian Yo IIo v t b Azo Orange, C.2311. Stonhard Fir Retardent Paints Tinting colours Polykcsi Sup or synthetic Pompeian
Finishes for Prefabricated Housesifhito lead Paints. Railway Gooch 6-, Engine Finishes. Label Varnish & Saterproofer Konrplastite Tt o It * star" AlKyd Bntuael Dymard Storing Enamel Coloured stencilling Paints in Solid. Form for .Vorehouea Tfae. lex Polish oita Shinning Agents. Rubbing Compounds Pouts--ory'-'hr Itol Resina.
Acknotrladgment is due to the follcr.7in;, under whoso ocrurviolon the aboAe-znantioned iuruatj-yst;..r>ns 'a-, c hoe., mad
Mr. V/.H. St It son
Mr. R.C. 3cnerviHe Mr. T.K. Rarraclcugh Mr. S .3. Frame is
Vara ink and Development Section Paint Control Section Dry Colour Sec 31 on Cellv.louo Section.
j
CSftd)
H.
N!S sNHAM
1ANA3XR To ohni e al Oper.itiono.
:% 0007-SWP-043644
0007-SWP-000126988
(43) WITH LEAD PAJiraS .
1=96.
Reri.es TTc>54 < C. Stave ns.
...Jfchor Examination of r. posuree after XO montV
KB3G7 -> 874.
fcraparlnonof Cooks on' = Xaaa-JJTJ, Metal Colors gradon of TGI 77c oiWi
Oofcacon.
Stain and octagon. Lou Stain and oicoferolytie v-ccm;
;hlto Lands. (S) fko evaluation of blonds of Jhite Lead uith. sine oiida
and Antimony Oxide. All paints -wars dated Pale Blue vith BT0ZS2
(
ILFS OS LTAD
imnnai
CHAUOliG
COLOUR
GLOSS
1 HKIARKS.
CdoUsons
V7431
Cooltsons Cooksone Cooks QtiG Iourwfrar-c
345/109 345/110 V4201 V74S1
lonabax-e
i ' 345/109
lonab&r c
345/110
15
6 }
,6
s
&
d i |6
1
j5
Faxlod Badly
V* poorir
n`
*t
tr
"i
<
rt
r*
, Hoary dirt roton-ticrv i 1
i
* tt > t j Slight oroslou
i [ Fleavy dirt x-o tent ion t Very alight ! blistering
Heavy dirt retention
) **
1Criimbe.rc
V4201
listed Colors Vr 431 *otal Colcrc E4--./109 ljGtn.1 Cclcrs Eik /\\0
5
;
i
5 ;
----------------------- 6
u _J........... ...........
IT
-
: slight blistering, j TTodor&t-o to heavy ; oresion
! Heavy dirt retention, j Slight orosiot
1 Heavy dirt -Gt ontion
y
.O t.
Total odours 74.50-1
5
fairly heavy erosion
i
0007-SWP-000126989
\UKDXuti
(44) yirr-FR uup PA.jtm'S
OHAuam
oatouR
otoss
I
ItStlARKB
Ooteson Stain
; V7431
Octagon :tlglr Stain
! 345/109 t
5
Ootacon Uis-i Stain
345/110
5
Ootaoon illgit stain
V4201
Ootaeon loc Stain
' V7431
Oatason lav Stain
345/109
Ootaeon Lon Stain
345/110
|&
OdtOGon Lot' stain
,V430`s. i
:.:?.ootroiytic 77433. ref.341/230
_. lootrolytio 345,0 ID rtj-C.341/aS0
Octaeon. 11. S.2 345,- 11C
ar.6
1
5 4/6 4/5 6
jctB.?on I^*Sa3 3*5/110
1^26
X
S/B
lon&t&rc nn>6
3 345/110 1
Co o &g q x is Ltd6
3 345/110 X
6/6 6/5
Bodly ' Faded
Poor _)...................
Heavy dirt^rotenfc ion
f V.Poor
| UcrJ.srn.tQ dirt retortlor. ; slifSit eroe Ion.
Moderate dirt retention
' = Poor ''
5t f 4
-
VtPcor
Met. orate dirt retention.
SlifjkS oros ion
Poor
MecicX'a't dirt rfttentlor
7.Poor
i
! I
f
0007-SWP-000126990
()
MPPor
UiTOirrx
.Jatal Colors 3
'te 6
1
34b/llD
;"ctad colors &
Rra
1
Sttn 618
l
Ootogon H.S, 4
run 6
1
to 618
1
Ootagon 1,5. A
lim 6
.to 618
1 X
Cootsons
"to 618
4 1 1
i-onabarc
..to 6 .to 618
4 i 1
348/110 345/110 345/110 345/110 345/X lO
CHAIidHO 7/6
COLOUR i
Badly | Faded
7/6
1
6 6/B 7/6
f i *" ii 1i 1 i ! '
t
i
n
7/6
n
0 Stevens
GLOSS i i 1 .YaPoor
j
1 i" i
i (Poor 1
1
ii "
IT
RK.UKKS Modorato dirt
retention
**
.Isolated blistering
Moderate dirt retention tr
n ft
COKCH7SIO!;s-- CTio icf'monoo of ttao ftddit ton of 33/ linseed stand oil or of 385? llnscod oood oil stand, oil Is only Blight.
Ih'U-. f t;fir.d oil la uorst of the four rasdla tried, on account of eroolon.
Onlt; small differeooea am apparent A It is not possible to eeleat ary jne type of lead. as being bast .
l`hr.- addition of antimony & 3ino Oxide to ary of tluj '.Tbits Loado oo far shoes a slight lmprovemont0 re ohallcing. ulno Oxldo as a sole additive haa no apparent effoat
1
0007-SWP-000126991
> *,
"-a- - ai' " J I - '**& r - - ,*. . <*f5*-* * t?A!/* i*Ai. * ' r n'5^,"'V ... ' 35Ji*f .... ...... i-v: *
i
y 00O7-SWP-043648 '
0007-SWP-000126992
ms
Sorias No. 55*.
;v;'^^^fpT.Tqjr>!wg*Br aascgwi'cAi. o p e r a s io h s mspoKi: ma r c h 1S47 4 ma y 1947.
f,> '
INDEX
y^r Cll` - - '
" l l*`
-Bege
~~ Vfcfri -- ` V
. . VC>%(.-
jiwftiti*.;...
s. : *
*5*
- ' *.
, ..........
... v.' .
* -
X .: .1
3 6
...... :6
8 a
ii
12
IS
18
19
V
23 25
30
33
s7
39
42
43
44
57
' ' 61
66
* -* ** * * * * k 1 v *
' mm *jm
** v *
,
Item Mo
C.14 ___
C-17 *>
C.2L
C.S2 ....
C.23 ....
D. 4 D. 5
D. 8
D.12 D .14 P. 3 P.17 P.40
%,
_,,__
__ ^.
P.43 P-43 ....
P.81 P.82
P.93
P.99
*a
P.115
P.117 .... TT.16 ....
Y-29 t * *
Bitle.
nitrocellulose Plastioleore Prcoccelln Cellufin Slco 3 Lacquers Bsnnis Ranket i?nieh.es Wood Lacqiaoy Pigoent Green Permanent Hed 5 G. Surfer Benzi&ene Tel low Chrome Tel low Stanhsr d Pompeian Fire Batardent Paints Maisons Matroil Berge master Pompeian Super Synthetic Tilo White Lead Paints Primer for Plaster Keiaolastite Xiaseecl Stand Oils Sail Oil.
AcJtncwladsmeat is due to fcfio follouing, under whose
supervision
the obove-raoutionod investigations have "been,
made: --
Mr, w-H.Stitson........-Vemieh and. Development Section Mr. n.C.Scmerville. . . .. .Psint Control Section Hr. J -iC.Barroolou^Ja. .. . JDry Colour Section Mr. S.E.Kronoie- ....... -Cellulose Section.
/H3SM.
(s ig h s d ) h , a . miatai.
4
Manager, P3CILNICA1 OHItATIOWS.
0007-SWP-000126993
sraio - F.os. (oonta.)
PCo
Saidas 3 .33.
Rno-M.njg Compounds loontd.)
.
By aajnarfciiig! thia fbnula to raise the aontent of SSsisVH ru
B>t ptp to 47.5^ end fti-feearinB %o rafcloe of tao 3d.q.ul&0 eo as to r:'' - : a\o
irman worls&bAO, a'materiel ^as otot ala04 which. waLB fairly aloao to Laotite
4 appewxranoe,
tii gnttiaeee of biao hisb uilj.ee content was vary
noticja^bist-mndor' the hnsx, a Seefcuo? o Jfclah is not apparent t&fn iaotlto.
So <w?iea$ thin' traablb the silioa was replaced By wfcitine nfl the
resultant isateiisl t o o a fairly close mrtoh -to Lastlte.
The fbjxjala eventually ahoaen me : -
60 Kj o ,
6"
40
10
34 "
60
"
(34fl> {sa?} ? 337 J
{SE3` { J8J.S78
333, as
3BB/B47/1
Cfclo vroa tastes oa an upright stosl panel osalaot losts.-s. Both Wi-Khsuoccl 360 ff . TSitliOTffe soesina.
Ezpo-ssd on roof on a. shoot of salvaBlad iron.
jSnposurs Ho. 11SO.
EKpouail es/V#?.
Gheszical enaX-waio and stAaroOcople eaesntUia'Sloa of the S5.Hrxr o.at-4. in Xaotlta ioiieato x Io t grade of asbestos, Karina eflnwti fiferao e.z<: siscllish oryabsla.
After 3 Jkonthn * onposHro on ttJj ruof Lnstite hiur, rtwvelojwu
a tV-'y colon:.' e-.\ssosti3 either casfaoe chaLZrjxe or wsiier a&stppSAswu v;:'.to s k .o csfaeeft hr.illy. 23ifi match to 3Ut.wt5.to is tfts.ll in seel o cnhi.f Sor. u5 this early ctat;o.
fiHlt 33 .V< v`. . lUs^'-U^ ijy
i. uu&VAaa.
Jr * Cf... .
f otf'wioi ciftarjji.Jistitfi d .ncpssuj? uu: <aftuc 3n .cO'jitliy' on r of iJrcSrrjors Ktfi.770, LcAicihsrc KM.770, SJetol Odours Ka.PVJi, CetOiSOji High Stain and octogen low Stain white Leads, Klaotrolytlo ffhttc Let-.ft, nclne van one jseditctB. esagsparioon aaa<to nth ctreight leads, hifsaft of i&s-;: fmi nine oalSe 3:1; olond of laafi, sine oxide end mtjnto.'ay vih-J :,* A:l: ..
Panoj. Hua'ooro L. P esv^674.*
i
0007-SWP-000126994
pas dd
lead Palnta
(Sonti. )
surlae <3.65.
6 can tie rocoTdsa that *4uxaaa straislcfc Whit Load Palata io tail obaS&ng fofnly badly, ulth th addition of zlbo sddp sod
teiaaxuiy ohnlhiig baa pyetptioblly ooaacd but oboki& baa iaerosocd.
jtee&lwn 84B/109 to '"ap* SJadiwos. with <4C) to oaten* ? 33 Of oil content*
Itefiiusi JMS/lXO 1st
Medium rith Y.808S te aartieat of S&ji of oil otatjn't.
PR1KSR gCE PLASTER
by T.P. S1OTAMOTI
P,13.g.
So k b pyallesinepy tuet were onrrled. ou to dotajjrai&o *b optiercssa thiokaoao of plantet ount to bo uisod in the ssaaons'emaji.t of zEaist-ef loou by t.pWtio thfoogb a sodaser pain* film*
la theo eespeaSLawata JCeonea comant was Maxed* ulth ^sufficient ' to eZfo a iaovtsx oonaietonay suitabl fbr Grouoilfcs th enomifc bolus
oppi-o^imattly of the pyoposttm to fonr th.fi dthytoata.
( Cj SSO^ SiSgO-<"S7 Jt TO* b p by eight ooatant. { Kta*? beusta su payee - ES-JS mtbar by oiabt- content
SMmj of aifforsnt dteuuatoyo cud depth wars filial with plate*y Enoytax end weighed* fho lose of eight waa saoopdad hourly denning tbs oasis' stag of the a>xiJBaa* end twice dally oftertrando, until no fasthOK- lose in weight oocamrefi. (see Table 1 en6 Graph.?
Tb pleytey coat traa thma. hoatasl to <a) SO0' C. end labor
Cb) 100 0. to ctnetsa* ntight.
Each gasra&ion took aovsi-al dayo*
other teat oarsl& out ore (1) tsa dabarnAiieitleqJ of th
inoiutbd'O of the orii'iastl Ksauea CeMsa* eadfli} it capacity to abs3'b
solatia? from thD otaosphero.
(
oontid.,,
0007-SWP-000126995
j>eg 45
Prto&r a>r Plantar
(Ooc'id.)
Sorieo 3.55. i
&r.i SarPacS -&T<33 rjoptii of ELaotas'
78.B S4.CM5& 8 csaa-
WeigbS of Tin
tiy* H& fla
3<Q'
3SJ*
=
34.
OoBTOod'i-ion of BKt?w
98.5 gpaa Eoonoc cesosat SO.3 gno water cqjial to S2.9?j
B. Sorfsco Axoix B<sp1tl of Plant;.
40 ts<t.ao 5 cm3
of 'JEH -t- Eiaotsf1 ra 1B8.87
Sin
o 13.99
0 oao dti on of Mcx-tar
113 .6 gas Kesas Oaawnt 08.73 Water {33.5)
>3. Stozfsoo Area
n 40 sq. ows. Wsf-SSi** of Sin
*> K.aotsr s 05.58
Tialelcaean of Plaster
o a asas.
tan
= l4.es
O. Sarfaso Area
2 40 req. cac. Woigiat of Tin Jaaatfcr & 157.45
S5iLc3m<ies of roastsr
a 8 cna-
3Soa
- 18.95
Tao aompo.^iti an of mortar of C. aafl D - was 158.B goo of Eearusa c-causa*. 4S.XB gnu. water. $32.3$)
oonttl.
0007-SWP-043652
0007-SWP-000126996
7" |S^vV
A* *r"S$aistsr. -
B-
Wfe. OX 33H t Hasten?
3.
Wt. OS t?iii * Blast wr
D.
v?u of, Sin 4- KLaotsu.
*riEo
S&OOO
Loos ^^5 Weight b l o c k s Hsiab-t
logii.
*1
i
L'
a ic?o. 143. ao a.t &f> ISO.16 1*50$
50.63 1.7SJS 307.33 j <0.B?
4 11
5.63 iae.6
3.53
3 05.50 S.45
3B7.a7
8B
s **.
23.1.37 .ce 165.21 A*4W
3 S&.1Z. 3.03
26<3 .S3
1.7J3
0. "
140.71 10.44 164-76 0.34
4 34.93 S.69
196.07
0.81
7 W
140. OS 13.01 184.sa 7.31
B 64.75 7 4S7
163. BS . 5.36
33 "
135.33 53.ZS 360. S3' 17.64
6
0.10
133.09
4.18
. 27 rr 3SB.G0 51.56 lao.ss 10.5
7 04,00 il. as
359.76
0.15
'SSL -1
as-*. 33.0
100.33 29.33 33 si .as 38.4
168.S>
14.57
47 =
304.5a as.sss 172.76 31.33 36 SI .63 SS.B
138.89 3S.C&
25 "
154.07 3S.85 179.35 83.7
30 il .77 55.8
1S3..B7 as.e
S7
334.57 33.55 170.18 30.96 47 51.os 34.33
160.85 8.a
iscr*
134.es 38.6
179.10 8.5.0
54 31.60 54.35
230.66 80.0
es 10.06 82. sa
1 j iso 1 160.26. as.co
J
244 \ is.ie SSI.4
108
/ 180.03
covered. a*' zoo? a.
23.9.1 a*
3Ee*>t ffi o. tov oevctroi 3.ayo
e . 61.4& sma-;
I I
I
Qotrtd.
0007-SWP-000126997
0007-SWP-000126998
.ggnolueaSna a. from (ft) Ktcaoo Qenaat lo not hysroeoop.io.
n (1) Keeneo dement as supplied by moattf&oturer hoa a very low moietur eoafeoafe < Q*B%.)
", ' 8,". ITroni the Anal figures in column A of Table it io calculerSed that tb.0 hyanato of Caloium 3ulp'a afco reverts to the enliyanaas state at 100 C. Broai ISac Anal figure la oolasmn 0 of Table it Bay ha aG&untod that feh product of hydration In a mixture of the mono - <3,i hydrate of Calcium sulphate.
3. Prom curves A & C it will bo aeon that the sate of lot a fey evaporation is not dopsniiaafe on surface area.
in Curves A, S, g an&D. s&ow that -th rate of loss of evaporation daeggeaos with lnoroese in tbiotoons of plantar oast.
5. curvae A and 0 show that for thin layers of plaster drying is almost ossnplefeo within 3ft hours, Wh areas B cad D chow that thidkor layers take a longer period of tins (7S hours).
<3 It may therefore he oonolndod that for the purpose of making comparisons of the permeability of different primsr paints, thin pie ates anote of less then 1 ora, fetich should be used, as any change in the rate of lose of evaporation would bo more marls*! in the cos of plaster, ousts of this fehlotoece. cent!,
0007-SWP-000126999
<cg - (consul- )
peg 4
SeTioa S.5S.
Do tonsination of pore antago Xoao of moloture of varloua
(
piastera-by <w~apoiaa*ii.PKa tbroogfo a primer palaft film.
. -vc
: -.
. 3fpr the purpose of dj-io work plant or oaato of a mpn^igum ,thioknono- Of S wan- ora used - Beo proofoue report or. optimum ' 'thtahncajh e>f..v3aa.tX'.
These Oaatc *^ra prepared fey misins a pro-determined
qja.eB.tity1 of pJaatar sod tufflctont wa.*or to form a paata of martor
_ cnneWtaany .ogifcablx for trowelling.
Tta panto was than pourad into
*- 90 of was a mmo, deep.) and tha total Heigh*
rador^k43-'^&3li'.jfoo plantar wao sufficiently oe* -- after about 3 bourn
paint ma applied.
loss in -Beteht of the easts wao
^eeoraod^ dally"unti 1 constant wsl ght nag roach.3.
.9r? *+
v t v>* J
On 'thea arpeidmonta three types of piaster wta-e xieed-
*(aj -
Plop oar (anhydrite) in s&ich th ratio of plaster to water r for th paste h o b loo : 30.
(b) ] ^looaop' Cemsn* (anhydrous) - ratio 100 : 30.
etsAsi" (o) ,tie (bemihyarato)
- ratio 3.00 ; 40.
Vba primer painta ueed in this won were
(3) Hatroil, (3) Duaaoetf. rand (4>
Sharp Whites Load.
(If
Uai.et>na
Izs. oordex to obtain Its true loos of moisture of e-vaso.-i'atioa a aoprootion for the weight of primer film must he made.
* auantlty of primer paint ouffic<sa* to for a shin ;.3ro rtas poured into sa eapty tin and ellowed to dry oat at uSmoapharia oanditioao to constants WoUsto*, and the poroentas solido caloulatsfi.
Thu. the wolgte of dry primer film wao determined and deducted from that of the coated plaster amat end tie resultant wc-iga;; iaye tbs true reading of loan of moiotc.ro by evaporation.
In the case of (njHaisono a deduction of 6.0354 off the ".'.oight of
Vft film is made.
ib) Matroil
"
' OX.&p
- do -
(o) DuauacI
"
< 75.Q7% - etc. ~
(d) Sharp rthit head - 37.77f. - do j
Th orportraents were oai-ried out in duplicate to observe the affect of over trowelling. Control teats were also made for comparison.
eoatd.
0007-SWF-043656 i
0007-SWP-000127000
' t>&yw* -1*"
Fiaarteg < floata.)
pace 60
sar&ae S.6S.
*>^yjuT*f *
TABIS Off BBSmUBS.
1. goagar'' Htaeto?.
'`
-Percent
Moiotaro Loan fr<m original festal water.
,^f-Goaf^a?7
& boura -IB.3# * - 'Vy.
i dw v gft.s
E .fleas'' .'57 .IB
'ia.a !ss.a ei.vs
o. feroTTeltlng
wjamcTT.
Bossnas. ----------l-.y;-.
tmWeUlng
pmiHP KBXS5 T/aan
o. trowel.
?
j
V>2 0 33.9' as. fta - 18.6
1?.9 11.42 | n.ee
57.1ft 66.6 81.06 - 10.9
IS.SB 18.62 | 13.0
3"
si'. 8ft
SB. 3
ao.a S3.S 81.36 - 30.04 22.3 13.6 j 14.13
s
30. ft
65.93
61.1 59. SB 01.36 - SS4.44f 27.IS 14.a J j LS.X
:>
00.5
S'?.!
61.1 59.S3 31.30 - 3ft.32 86.63 16.65
16.23
? f*
00.5
67.6
69. S3 61.05 - 2B.2
31.8 10.05 [ 17. 05
9"
ES.7
3ft. 05 is.as
17.76
,1|
1
:i
1 I ij !1
31. ft SO .S 30.1
36*0 17. S3
10.0
SO.8 19.33
31.3
60.9 80.16 ` 33. SB
>. 5* :*j ,r
:> "
: i
j
i ;
1 i
$ [
36.93 ftl.S 20.92 , S3 .A
i i S3. SI 42.6 dO .93 26.5
: ij j s ftO.ft
23.25
SO.9
j
;
i
ftS.l
45.7 24.4
38.a
;.g. t< i
S
;
I
40.1
ftft.a 31.3 , 38.0
E jj 1>
]
Example Pioneer (Duenoal)
fleiejit of tin
-=
-}- plaster atlas
" after set
-< Dus seal
a
33.08 gna ) weight of Plaetor lftft.as gna j ndji - - 18s.83 goo.
142.40 gna ) weight of lftB.95 gna 1 wwt films w X.C3 gna.
By o&Xculatlon -- total water content of pleatar -- weight of ary film
20,34 gas. 1.15 gmo.
eonta
0007-SWP-000127001
pasc S3
film and tin aftos S doyn a 141.81 gas.
'fflWMtoW.
3.44.88 U41.81 - 1~.1C) ? 100 a 18.9# 88,84
# Elcdotaro ofisr 2 days a 18.9#
8, Kceaoo Oeotat
I cowfca.
0007-SWP-000127002
. JyP's,esiawe*yrs-wroo<+>f-P*3uaTs8lb, m, rr. (Ooat<i.)
pas 52
3<mMLb a.ss.
1
pawatw
- .-t nt- ng;.r;/ TfT^rsjjis^'aor,- 1
H4IS0H3
. in. 3ro. i.
HcrttoX
Ovasp1 *
O*0T
Trowel HoiaiaX Trowel
\s
hat ho h.
Over Hasgal T.
Btrsss&i
Over Uozsttal Trowol
SHajetP W. xsfl.
over EJormoJ. Troinel,
%fcsre. 1 adjr. ai.'sj a doya' 57.3 .
10.3. . 33.'^ / RJ 7.4 07.94 63.7a
87,07 58.0
aW
G3.9S
s
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va**-;: .IfiJSvO
6 *n'
ife?
T/ ` "fT _
63.3 68 ..S
fps? %.v *
00.60 03. S
31.85 69.83
'8il.?
.eo :a
'&U9 " B9.a
85.5 si. a 03.2 63 rB 63.0 63.6
9"
12 'l3 "=
14 'i 10 ^ 10 "* 23 <i
S6 "
- .1 i i
i i
i
i
{
- 10.84 - w.as - 30.Q - 82.33 - 84.76
as.m
32.07 43.3 <16.5 69.0 SS.ffi 58 9 0S.O 93.0
m---,- --
3 .3
13.46
18. SB 10.87
as.3
SO. op
30.8
89.6
31.7
39.93
36.0
3306
43.13 33.
48.6
40.33
56.5
47.8
1 43.6
59.3 i 49.3
60.0
51.8
50.55 08. U'
64.S 36.C
83.0
81.0
35.53 17.4S Sl.Z 3a. i* 39.34 es .as 37.84 41.65 48.84 49.36 SI. 0 35.1 se.4 S3.9 59.9
05gorvablrou> on fUat liiaqrfiisejys cad esflhaolotu
(1> idbaaioa. of j>3ut filme wao goad in ail inatemoos.
(S) OrSar of bongtoaoas.
Dueaeal tougher -tSwn. Mertroil - Miicoaa b ought*?
thatk a harp whi-fca leafl. {3J Tbofe was (some oviftauco of afflorasoo&oe on bho Sharp muto Xaa&
film of Isha Thieble Flasber Cast.
0007-SWP-000127003
Seri 03 S S5.
vouj?y<a of the graphs (Titto moisture) loon) show chat
Hafcroll ana Mai 00 no fcoyo a high. nator permeability, penaj-ttins the exoooa water in tha plaster to evaporate a^py1 freely end Rapidly, tuwspecro aonbsol test In which fcho -' piaater cast -was.not prSmod. Cotutmt weight -way in all ^ throo lnetsdees roaeliea within throe days.
(b)
'rDugaoal ana Sharp White lead primoj.'o Imvs a !ov> -,atsr
pOEadability. Eton.oftar 36 deya of priming -She planter oaoto fit111 retained as much as SSfi to SO# of tlto frn:> ropiestvira in th plooter- Except in c-he earlier stosao of the esparlaiento, the rate of aofeturo Iona oar- r..i ,?ilu to 't" fairly constant.
(c )
Oa variation in tho results obtained in oror- crow3. Jins t-c
norma! trorarelllns of a Plaster sarfaofi As inefficient to ata.be that yha fom pracasr. miglti; epo.-'eaielv.y affect bho drying ant of a planter.
Cone luoiann
S'roni tto lit a ottaiEti in. the eiforfliacnto ;. ij -.Sp e .'&c?.; fefi calculated to ha.
(a) Pi.out) or
Honofcydr-otc
(tO Kfcsnoo oeMoa1t - iaxbu.ro of i/itiiii - h.'.oi by''
k-J atsa..-i6io
- DSbydrato.
,
la practice), Primer paj.nto such ae DuaueaJ. ail .i.v,r'- :b.itc i.aaci aro applied, in. the 'fol.low the trowel' process to Eoc-?:no earnests Pia. ;?.!'
eurfoesa to pr^yont a too rapid CLry-oat: A rapid 'dry-out ' multi r-.ffoe \ and retard bho 'uoi-birtg esnl hardening proossan of tho CF-xamt.
She roaul to of th uaovo sporlmaata ohow tinl on bri-
application of hnaasal or Sharp 3hit lead moistur is retained in too
plaster oven after 38 Soya of dry?. Bg. This prolonged retswisi on of tnoisti-'r.
nay, hotffiffar, in-'time givo rise 'So defeats in the ftniahod paint-7oars, a:.?/,
thg-cgftmtj. to wh|elL these defects may arise aea only ha AebarainoA by
oorrrJgSa.'^juit piagt'eir wall tests .
j
^ 33 =-!&*ldiag Baaoarcb Station may fca> obits to- Sit irfonaatlon on- tlj-;period, fjestting and konioning of Zeazou Cement, end indioatn the o'orrbletian hobwapn laboratory tests raid building practice.
contcV,
0007-SWP-000127004
Surloa 8 5S
0007-SWP-000127005
MW'' 0007-SWP-O43662
0007-SWP-000127006
0007-SWP-043663
0007-SWP-000127007