INFLUENCE OF THICKNESS OF CEMENT-GROUND BASES ON BEARING-CAPACITY OF CONCRETE ROAD SURFACES
Journal Title: Вісник Національного університету "Львівська політехніка". Серія "Теорія та практика будівництва" - Year 2018, Vol 0, Issue 904
Abstract
Permanent increasing of loading on road surfaces requires a permanent increase their bearing capacity. In research paper presented experimental results of test specimens of concrete road surfaces on cement-sand bases. The experimental tests were conduct at laboratory of department highways and bridges at Lviv Polytechnic National University. The specimens were at scale 1:3 and included six plates by sizes 2×1 m united in construction by joint type. The full-length research object was 6 m and width 2 m. Two middle plates were testing to destruction specimens. After that, in this area placed new construction of surfaces and bases. The task were to determinate comparative dependence the limit loads and deflections in different thickness of surfaces and bases for more clear and detail estimation influence of this value. For reach this tasks were used orthogonal planning of experiment in the first order for the two-factor dependence on the three levels – tested 32 = 9 constructions of surfaces. The thickness of test specimens of concrete plate were 50, 70 and 90 mm and the thickness of sand-cement bases were 0, 50 and 100 mm. The experimental results showed that for increasing bearing capacity of concrete road surfaces need to arrange bases of materials strengthened by cement. In this paper presented new results of regression equation in first order, that characterized comparative dependence the limit loads and deflections in different thickness of surfaces and rigid bases. In experimental results of concrete plate specimens on different thickness of rigid bases determinate, that bearing-capacity of 10 mm had equivalent bearing-capacity of 18–20 mm plate on rigid sand-cement bases. However, by the received experimental results, the increasing of rigid bases cannot be sharp growth and must be optimal correlation of thickness of concrete plate surfaces and bases in condition of equally tense of plates.
Authors and Affiliations
Serhiy Solodky, Ivan Dumych, Y. Turba
Keywords
Related Articles
- EP ID EP494757
- DOI -
- Views 79
- Downloads 0
Визначення інтенсивності турбулентності потоків з великомасштабними вихорами на основі геометричного та кінематичного аналізу макроструктури
In connection with the standards harmonization with the EU it is necessary to take into account turbulence intensity in rooms. The basic approaches are high-cost and time consuming experimental researches in special labo...
EXPERIMENTAL RESEARCH OF LAMINATED GLASS COLUMN FOR CENTRAL COMPRESSON
The possibility of using structural building structures from a glass triplex is explored. Are presented the experimental tests of glass multilayer columns with vertical arrangement of layers. The results of experiments a...
ПІДСИЛЕННЯ ЗАЛІЗОБЕТОННИХ КОНСТРУКЦІЙ ЗА ДОПОМОГОЮ ПОПЕРЕДНЬО НАПРУЖЕНИХ ЕЛЕМЕНТІВ
The basic design of modern buildings and constructions are made of concrete, reinforced concrete or brick. To date already made significant contributions to science of strengthening of various reinforced concrete structu...
АНАЛІЗ ЗА ДОПОМОГОЮ МАТЕМАТИЧНОГО МОДЕЛЮВАННЯ ЗАЛИШКОВОЇ НЕСУЧОЇ ЗДАТНОСТІ ІСНУЮЧИХ ЕЛЕМЕНТІВ КОНСТРУКЦІЙ ПРИ ПІДСИЛЕННІ
During the operation of the building there are situations when it is necessary to change the planning decision, which leads to interference in the bearing elements of the structure. Strengthening of any element of design...
Scheme for promoting industrial energy efficiency – pine project results
This paper investigates the main factors influencing an energy auditing procedure, leading to the adoption of energy efficiency measures by small and medium-sized enterprises (SMEs), providing suggestions both for enterp...