1931-07-04 — Page 2

Use Green Island Cement

for

Constructural Work of

HONG KONG DAILY PRESS, SATURDAY, JULY 4, 1931.

ENGINEERING

AND

BUILDING

RUBBER PAINT TO BE TESTED.

STRAITS SETTLEMENTS GOVERNMENT EXPERIMENT.

Every Description. POSSIBILITIES OF NEW INVENTION.

HOW GREEN ISLAND CEMENT IS MADE

Green Island Cement is manufactured from hard limestone and clay. It is necessary that, these materials should be finely ground in order that they may come into intimate contact with one another in the burning process.

The finely pulverised materials are mixed in a certain definite proportion, roughly one part of clay to three of limestone, and are fed to the Rotary Kilns,Gan

In these kilns they meet the hot gases and flames generated by pulverised coal blown in at the other end of the kilns," and after various chemical actions have taken place, they combine to form Portland Cement Clinker.

The Clinker is ground down with a small percentage of gypsum to regulate the setting time, and Green Island Portland Cement is thus produced.

Although sounding so simple, in reality the process is an intricate combination of mechanical; physical and chemical operations, needing great akill and care. Nothing but constant and accurate supervision will yield the results so well-known with Green Island Cement, namely, strength, uniformity and reliability.

USE GREEN ISLAND CEMENT

Issued by the

GREEN ISLAND CEMENT CO., LTD.

2ND FLOOR,

EXCHANGE BUILDING,

NOW

IS THE TIME TO INVEST

IN SOUND ADVERTISING.

When new accounts are slow in maturing and business seems dull, pro- fits can be built up to normal level by investing in a carefully planned. advertising campaign.

Let The

Finding new uses for rubber is constantly advocated as the method of solving the problem of the rubber industry-over pro- duction. An important step in this direction appears to have been taken by the invention of rubber paint by Mr. L. Cresson, chemist and technical manager of the Singapore Rubber Works, Ltd., who has already patented many products with rubber as their basis.

The new product is favourably regarded in official circles, and if it withstands the tests which are at present being made it should have far-reaching possibilities,

- REVOLUTION. IN PAINT INDUSTRY?

Mr. Cresson has been working on this invention for some time. When it reached the stage of practical atility he approached Government, and as a result of a conference with officials, it has been decided to give his rubber paint an interesting test. The front of the Government offices will be treated with this Cressonito rubber-bound paint in place of the usual cheap Chinese colour wash which has, in Singapore, a life of only about two years, as the atmos- phere quickly di

fans, is its acoustle properties. A special grade of paint is made to improve the acoustic properties of any room which can be applied as

SECRETS OF HIGH- SPEEDS.

MYSTERY PLANES BUILT FOR SCHNEIDER CUP,

Great speed secrets will be re- vealed shortly when the high speed. dies of Britain, France, and Italy begin practising in earnest for this year's Schneider Trophy contest. All the competiting nations have sensational spoed surprises store.

Among the new miracles of spoed is a remarkable plane, which la being built secretly in Italy. More like a dying projectile than, an aeroplane, it is believed to revolu- tionise all existing designs.

Everything has been so stream- lined and with resistance cut to cha minimum that the pilot has to lie practically flat in the fuset.

to have a cllular texture, it boing! Four hundred miles an hour is claimed for this new dying known that general stone structures

bullet, which was intended to take of to-day offer a multiplicity of hard reflecting surfaces, which re-part in the last Schneider raco two years ago, but could not be got flect the sound backwards and for- |

ready in time, wards and produce echoes, murmurs

"Franco also has a mystory won- and other annoyances. Thus correct thickness or texture forma der plane with which tests are to bo, made shortly. This machine, tion of this rubber paint will serve to absorb all distracting noise, and tco, is expected to attain speeds in clear the air of echoes and reverthe vicinity of 400 miles per hour. The French designers have achiev berations.

The cost of the rubber bound paint is about a quarter that of ordinary oil paint and about one- One good thing about the painted remarkable results in reducing half the cost of high-class dis- is that it does not need an expert waight, and the engine of the new temper. The now treatment has to apply it. The paint in supplied speed plane is said to weigh only been tried on a small scale and in concentrates, which is easily. per house power, as compar ed with the designed 08lb per has proved satisfactory, but the diluted with cold water for appli trial to be made on the Government cation. It drya very rapidly, and house power of the Rolls Royco

engine of 1920. "boards will offices will be of greater value, be thus wet paint

The new such-hush 'plane, which. cause while the whole of the front quickly drop out of use should will be used by the British pilots of the building will be covered with rubber paint become a universal will be been shortly in their first rubber bound paint, the back and product. Moisture provides an im-trial speed flights, British hopes side will be treated with colour portant point in the binding of the wash, thus providing a fair com- paint, so that there is no dangor parison of the utility and durability of daniness causing blotches.... of the new invention."

How Much Rubber?'

It is of interest of Malaya to sco what amount of rubber this now invention is likely to use up: The

The finished surface of rubber painted walls is smooth, and, ac cording to taste, can be of a glassy or dull appearance. This paint can be obtained in delicate shades and rubber contents of the general type colourings, and, therefore, can be of paint for interior and exterior used inside buildings. Thus it will decorative work is approximately 5. be seen that if Government's ex-lbs. per. 1,000 square feet per cont periment is successful, and the new of paint, and generally it is more invention satisfactorily withstands satisfactory to apply two coats. all tests, its unga will be consider However, the percentage differs, of course, with the grade for the able. All buildings in lime paster

special type of paint for acoustic in the tropics could be so treated, and the rubber surface presented purposes contains 18 lbs. of rubber per 1,000 square feet, per coat of would act as a preventive against paint, and in this case it is neces decay by age and weather, for

sary to apply about four coats. the paint would act as a water-proof

A prominent official expressed the covering. It can be produced in a semi-transparent condition, and thus view that should the experiment alone, and to be tried prove successful, and useful as a preservats

it is anticipated would be extremely they had every reason to believe useful in preventing stone buildings that this would be the case, it in large cities from speedy depre- would cause a revolution in the clation owing to smoke eating into painting industry. Rubber paint could be produced quite cheaply- the stone.

cheaper than ordinary paint-and Special Features.

has more extensive uses: It had For interior and exterior decora-particular possibilities in America tive purposes the paint is made to and Europe, where, be considered, preduce matt or glossy finishes, and it would be of greater applicability sworkable according to the latest then-in- the tropics. ¿-- methods of application, giving very attractive and georgeous effects. It has the very striking feature that it is unaffected by, and drys rapidly on, new plaster or concrete, which Singapore Bubber Works, Ltd; is a fact is, of course, a definite stride, local company, registered in Singa forward, and very advantageous to, pare, having factories in Fusir the builder. It may be put on all Panjang. The managing director. surfaces without patchiness, and Mr. C. Huisken, is at present on does not poel with damp coming a tour of the world with the object through walls, in fact; "it helps to of examining the possibilities of keep out damp, It has high exploiting Cresson patents in other abrasive qualities, particularly the countries. It might be stated here special grade which is designed for that a Cresson rubber rond was laid the painting of floors, and one fen- in Tanjong Pagar in 1929. Since

The manufacturers are the Singa- poro Rubber Works, Ltd, to whom have bech assigned the rights of all the Cresson patents. The

Directory and Chroniclere, hichill. cupecially appeal, then, it is estimated over 2,00,060

of the Far East

to the housewife, is that it is pes tons of traffic has past over it, and sible to wash any stains off, even the area is still in perfect condi ink. Furthermore, should a wall tion,

to badly, Borntched after being. This is surprising, whọn. It is can painted, it is possible to repaine sidered that the rond has revived

be your sales builder. Write to us for sugges that part without giving a blotchy no attention, since it was laid, pp.

of advertisin schemes and rate cards.

DAILY PRESS. LIP, des en

Appearance.

is exposed, to the blaring sun. **Another special feature, and pner Cresunite tile ara also becoming. which will appeal greatly to public very popular, not only in Malaya,

and institutions in the East, but in many other parts of the

necessary to employ

vorld-Straits Times,

that with the new engines and improved design of the Super- marine planes speeds of 400 miles an hour or more should be reached with ease.

O YOU REALIZE THAT

STEEL IS LIGHTER THAN WOOD

PER UNIT OF STRENGTH?

EMPIRE HALL, OLYMPIA, LONDON

STEEL FRAME BY DORMAN LONG

The relative strength of steel, and other materials per ponad

of material work done-is as follows:-

STEEL 'GRANITE"? 2

BRICK

LONGLEAF YELLOW PINE CONCRETE

-100 79

NOTE: The above ratios are based on compressive, strength.

Eteel and longikat yellow pine have tensile "trength. equal to their compressive strength.. “Granite, brick and concrete do not posscas any appreciable tensile strength.

With steel, less volume and weight of material is used; Jena tonnage transported, handled and erected. The building weighs less, and lighter and less expensive foundations are beeded.

DORMAN, LONG & CO. LTD

STELLMAKERS, CONSTRUCTIONAL ENGINEERS AND

BRIDGE BUILDERS,

MIDDLESBROUGH AND LONDON.

NEW CHARM, NEW BEAUTY

IN

CONCRETE WORK

It is now possible, at no great additional cost, to introduce the charm of colour into ordinary concrete work. A new coloured cement is available-- * Lolorerete "'—which 'possesses the... advantage of a permanent and standardised colour. The two colours available at the moment are buff and red. Concrete made with "Colorcrete" is not only much more beautiful than ordinary concrete, but It has, the strength and hardens just as rapidly a concrete made with "Ferrocrete." the rapid-hardening Portland cement. It gives in 4 days the strength of concrete made with ordinary Portland cement in 28 days.

Coloréret!!

considerable value for all concrete constructional work where permanent olour would be an advantage.ib gives a concrete which harmóniaes perfectly with the natural, surroundings, and which reduces glare due to the reflected rays of the sun. Be

Have the advantage of colour, in' constructional work by constructing in concrete mide with #·olorerete."".

Pavilions, bandstands shelter and promenades: factories, bridges, muni- cipal houses, carriageways and paths can all be beautified at very little extra cost by the use of this rapid. hardening coloured 'Portland cement *--*Colorcrete:"-

COLORCRETE

PORTLAND

BRITISH

ANTI-GLARE

COLOURED PORTLAND CEMENT

CEMENT

COLORCRETE

THE

REGO.

STOCKS CARBIED. SAMPLE ON APPLICATION.

Sole Agents

DODWELL & CO., LTD.

QUEEN'S BUILDING -§•{• HONG KONG.

"PHONE" 2802)

MANUFACTURERS LTS