SU1339201A1

SU1339201A1 - Composition for making road paving

Info

Publication number: SU1339201A1
Application number: SU853872391A
Authority: SU
Inventors: Анатолий Иванович Мураховский; Северьян Валерьянович Тордуа; Виктор Иосифович Москаленко; Виктор Дмитриевич Петренко; Николай Михайлович Николаев
Original assignee: Военный Инженерный Краснознаменный Институт Им.А.Ф.Можайского
Priority date: 1985-02-19
Filing date: 1985-02-19
Publication date: 1987-09-23

Abstract

Изобретение относитс к строительству и может быть использовано при устройстве дорожных и аэродромных покрытий. Цель изобретени - ускорение набора прочности покрыти . Композици дл устройства дорожного покрыти содержит, мае %: цемент 4-6; нафтенова кислота 10-12, грунт 68-72, окись шестивалентного хрома 0,005-0,01; и вода остальное. Прочность покрыти при сжатии в 3-суточном возрасте при влажном хранении 6,3-7,0 МПа, в 28-суточном - 11,8-12,4 МПа. Коэффициент морозостойкости после 15 циклов испытаний 1,28-1,35. 2 табл. оо со ГчЭThe invention relates to the construction and can be used in the device road and airfield pavements. The purpose of the invention is to accelerate the curing of the coating. The composition for pavement contains, in May,%: cement 4-6; naphthenic acid 10-12, soil 68-72, hexavalent chromium oxide 0.005-0.01; and water the rest. The strength of the coating under compression at 3 days old at wet storage is 6.3-7.0 MPa, at 28 days old it is 11.8-12.4 MPa. Frost resistance coefficient after 15 test cycles 1.28-1.35. 2 tab. оо с ГчЭ

Description

Изобретение относитс к строительству и может быть использовано при устройстве дорожных и аэродромных покрытий.The invention relates to the construction and can be used in the device road and airfield pavements.

Цель изобретени - ускорение набора прочности и повышение морозостойкости покрыти .The purpose of the invention is to accelerate the curing and increase the frost resistance of the coating.

Суглинистый грунт увлажн ют до 4 - 5%-ной влажности, перемешивают с цементом , после чего в эту смесь последовательно ввод т нафтеновую кислоту и водный раствор шестивалентного хрома.The loamy soil is moistened to 4-5% moisture, mixed with cement, after which naphthenic acid and an aqueous solution of hexavalent chromium are successively introduced into this mixture.

При введении в композицию на основе цементного в жущего органических добавок обычно приводит к некоторому замедлению процессов гидролиза и гидратации цементного камн . Добавка окиси шестивалентного хрома обеспечивает более высокий рост прочности ко.мпозиции особенно в ранние сроки твердени , а за счет ее высокой растворимости в воде возможно использование окиси шестивалентного хрома в .малыхWhen introduced into a composition based on cement, cement, organic additives usually result in some slowdown in the process of hydrolysis and hydration of the cement stone. The addition of hexavalent chromium oxide provides a higher increase in the strength of the composition, especially in the early periods of hardening, and due to its high solubility in water, it is possible to use hexavalent chromium oxide in small

затем формируют образцы-цилиндры и подвергают испытанию на прочность и морозостойкость .then cylinder samples are formed and subjected to strength and frost resistance tests.

Примеры на соотношение компонентов г КОМПОЗИЦИИ представлены в табл. 1, а результаты сравнительных испытаний - в табл. 2.Examples on the ratio of the components of g COMPOSITIONS are presented in table. 1, and the results of comparative tests - in table. 2

В примерах 4 и 5 содержание окиси шестивалентного хрома выходит за предлага- .Q емые пределы.In examples 4 and 5, the content of hexavalent chromium oxide is outside of the proposed .Q limits.

Как видно из табл. 2, предложенна композици дл устройства дорожного покрыти обладает ускоренным набором прочности в ранние сроки ее твердени и высокой морозостойкостью.As can be seen from the table. 2, the invented composition for a pavement device has an accelerated curing in the early stages of its hardening and high frost resistance.

1515

Claims

Invention Formula

A pavement composition composition comprising cement, naphthenic amounts due to the high uniformity of acid, soil and water,

distribution of this additive throughout

mass to the slurry with stirring.

The resulting chromium naphthenate (R - COOCr) exhibits high adhesion in organic solvents. This suggests the presence of a high 25 adhesion capacity of the neoplasms on the mineral surfaces of the hydration products of cement stone and soil particles.

In the laboratory, several variants of the proposed composition are prepared, from which

that, in order to speed up the curing and increase the frost resistance, it additionally contains hexavalent chromium oxide at the following ratio of components, wt.%:

Cement4-6

Naphthenov

acid 10-12

Soil68-72

Hexavalent chromium oxide 0.005-0.01

WaterEverything

eleven

12

ten

9.5

13

then cylinder samples are formed and subjected to strength and frost resistance tests.

Examples on the ratio of components of the COMPOSITION are presented in table. 1, and the results of comparative tests - in table. 2

In examples 4 and 5, the content of hexavalent chromium oxide is outside the suggested limits.

As can be seen from the table. 2, the invented composition for a pavement device has an accelerated curing in the early stages of its hardening and high frost resistance.

Invention Formula

A pavement composition composition comprising cement, naphthenic acid, soil, and water, wherein

-

Cement4-6

Naphthenov

acid 10-12

Soil68-72

Hexavalent chromium oxide 0.005-0.01

WaterEverything

Table 1

0,0075

0.01

0,005

0.015

0,0045

Note, Samples are stored in air-dry conditions that simulate weather and climate conditions at a road-climatic zone. C. Samples are taken during storage by regularly moistening their surface after 1-2 days.

Editor S. Patrusheva Order4191 / 21

VNIIPI USSR State Committee for Inventions and Discoveries

1 13035, Moscow, Zh-35. Raushsk nab., 4: 5 Production and printing company, Uzhgorod, st. Project, 4

table 2

Compiled by E. Bikbulatova Tehred I. VeresKorrektor A. Obruchar

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