Producing Portland cement and romacent, existed since 882. 22 presented a general view of Novorossiysk cement plants in the early 900s, as well as for comparison, their view after the world war.
In 884. Prof. A. R. Shulyachenko founded the Glukhoozersky Portland cement plant (in St. Petersburg), and in the late 880s, factories arose in the Serpukhov district of the Moscow province, in the Shlisselburg district of the St. Petersburg province (Zvezda Plant). developed on the basis of the known from 848 g. factory p. E. Orsha) and others. The beginning of the production of Portland cement at the Odessa plant a. M. Weisman belongs to 892 g.
In October 88 g. The first Russian technical conditions for the acceptance and testing of cements, created on the basis of the experimental work of the mechanical laboratory of the St. Petersburg Institute of Railways, were published by the Ministry of Railways. The beginning of the standardization of methods for determining the physico-mechanical properties of cements was laid in the main capitalist countries from the second half of the XX in. However, the Russian technical conditions were more progressive than foreign. They provided not only a test of gap samples at 28 days, but also their testing at the age of days. This regulatory document contributed to the trust in Russian cement, and therefore caused the expansion of its production and the reduction of imports.
An important role in normalizing the properties of cements and the development of their testing methods belonged to the regularly convened congresses of Russian cement technicians and breeders. Domestic ones actively participated in the consideration of these issues on the congresses of the International Society but the test of building materials.
The following results of tests for gaping samples of 28 days of age made in the late 880s from h from h are given the quality of the cements entering the construction sites. cement and 3 hours. sand: Riga cement – 20.75 kg cement – 20.47 kg/cm2. Laboratory test of samples 0 Russian cement plants, carried out in 889. Moscow architectural society, showed that all cements but their indicators exceeded the established regulatory requirements.
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