A NEW CEMENT.

Hauraki Plains Gazette, Volume XXXVI, Issue 4826, 25 March 1925, Page 2

A NEW CEMENT.

A QUICK-HARDENING ARTICLE. EXPERIMENTS BY CHEMISTS. There has been an increasing demand recently for a cement which will set more rapidly than the Portland cements to which we have been accustomed, and cement chemists have for some time' been experimenting with a view to the production of a quick-hardening cement at a cost which will not be excessive for the general requirements of tiie builder and engineer. So much progress in this direction has now been made that a now quick-hardening portland cement is being put on the. market, and tests wo far undertaken by Professor Dixon at the city and Guild’s Engineering College go to show that a considerable measure of success has been achieved. The tests have so far only been undertaken up to the age of seven days, but as they prove that at 48 hours the new cement has a greater strength than that required by the British Standard Spcciflcaiton at 28 days there can be no doubt ais to the rapidity of hardening. Whether this strength will be maintained over a long period of yeans time alone will toll, but as it is a true Portland cement there can be no reason to expect any deterioration of strength with age. . Up to the 28 days a completely satisfactory Increase is indicated.