Optimization groundconcrete composition for filling of underground workings
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2017, Vol 1, Issue 66
Abstract
Construction of buildings and structures in Odessa region is complicated by the presence of large areas of soil subsidence and undermined territories of underground mine workings (catacombs). They generate a high probability of surface failures. Therefore, the elimination of the old underground workings, when increasing height of newly built residential buildings and loads on foundations, is a current goal. The goal is to use clay (waste production of clay rock) for making concrete and the laying of underground mining, clusters, voids, and fractures. To exclude the deformation of the surface, to provide normal operation of internal and external engineering networks with laying-out of worked-out areas. Eliminating the pores and voids of the underground mine workings is to ensure the operational reliability of buildings and structures in the region of seismic resistance up to 7 points. To ensure the durability of construction objects, located above the mine workings. Objectives of research: develop formulations and study the properties of backfill material for the elimination of excavations. Methods of lightweight concrete selection according to requirements of normative documents. Two basic requirements are presented: the workability of the concrete mix supplied the concrete pipe and concrete strength grades in the range of 15-25. The factors, determining the performance of mix and concrete, are studied: mobility, composition, water-cement ratio, the presence of the filler and the increase of concrete strength with time. The results of the studies: compositions of soil cement with mobility OK=12-14 cm on Strasznie cone, intended for transportation of concrete pumps pipes are selected. On their basis concrete in the range of grades M15-35 with a consumption on 1 m3 of soil cement was obtained: loam 1m3 (1000 kg) of Portland cement grade 400, in the range of 80-175 kg/C=3,5-6,0.
Authors and Affiliations
M. V. , Mitinskaya, A. , Kucherenko, T.A. , Suchecka
Keywords
Related Articles
- EP ID EP317485
- DOI -
- Views 153
- Downloads 0
Experimental investigations of the rebated connection of the thin-walled galvanized constructions
The aim of this article is to increase the experimental scientific data, these data are used to develop new constructions. The article analyzes the connections that can be used to create ultra-light steel reinforced conc...
Laser cutting technolodgy functional model
Development of modern manufacture determines increasing introduction of high technologies, laser cutting of materials in particular. Laser cutting has a great advantage in the sphere of cutting out sheet metal in compari...
Innovative technologies on elimination of the over-standard roll of the residential building in Odessa
The article describes the way of elimination of the over-standard roll of the residential building in Odessa with the use of innovative technologies developed and repeatedly implemented in practice by the specialists of...
Decorative constructional expanded clay lightweight concrete on cement slurry processing gravel
Mechanical properties and color range of decorative expanded clay lightweight concrete were investigated. Red and yellow iron-oxide synthetic pigments were applied. Structural expanded clay lightweight concrete was manu...
Saving the «spirit of the place» at the revalorization of the historic small town
This article proposes a solution of the problem of increasing the value of the existing historic environment of a small town by restoring the architectural and artistic significance of its architectural and urban monume...