A practical treatise on natural and artificial concrete; its varieties and constructive adaptations (1879) (14763858495)

Identifier: practicaltreatis00reid (find matches)

Title: A practical treatise on natural and artificial concrete; its varieties and constructive adaptations

Year: 1879 (1870s)

Authors: Reid, Henry

Subjects: Concrete

Publisher: London, New York, E.& F.N. Spon

Contributing Library: Getty Research Institute

Digitizing Sponsor: Getty Research Institute

Text Appearing Before Image:

The use of natural silica from Farnham secures consider-able advantages in this industry owing to a large proportionof it being soluble, effecting thereby a saving in cost of ENGLISH CONCRETE INDUSTRIES. 223

Text Appearing After Image:

224 A PRACTICAL TREATISE ON CONCRETE. Fig. 29. ENGLISH CONCKETE INDUSTEIES. 225 The machinery required for the conversion of the crudesilica into silicate is of a very simple character, consisting ofa pair of iron edge runners to reduce the stone, and a seriesof jacketed boilers to which is supplied the steam of therequired temperature. The caustic soda is obtained from thebest sources and of the purest quality, because the presenceof sulphur, which sometimes exists in carelessly manufacturedsoda, has a most prejudicial influence on the silicate. It will be observed that all the operations of the Victoriastone process are the result of manual labour, and with theexception of the steam power for grinding the silica stone, nomechanical assistance is called in to aid the manufacture.In fact the Victoria paving slabs are hand made, and thecontinuance of this practice is almost unavoidable in orderto overcome the usual prejudice attaching to any departurefrom an established industry. The V

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1879

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