Paper by KAWANO MORIHAMA KOBAYASHI MORITA from ISCR 7th 1994 Vienna Austria
In order to shorten the construction periods of concrete structures, PWRI and four cement manufacturers carried out a joint research to develop 5 new types of one-day concrete with the following requirements: The compressive strength of the concrete shall be 30 N/mm 2 or more one day after mixing as the pavement may be opened to trattuc shortly. The concrete is deliverable to the site from a central batching plant, without any special requirements for the mix, the devices or the curing. The concrete is workable for more than 1 hour. The binder to be used shall be based on ordinary Portland cement or its equivalent. This paper reports on the properties of the materials of one-day concretes and outlines the results of test constructions of road pavements with oru-ddy euiicit2ti.