Abstract
None of the methods described previously provides a solution to the problem that deals with the SSS evaluation of the ground mass which is under the influence of chemically active substances and, in particular, under the influence of peracetic acid. The stress-strain state of the ground mass contaminated with peracetic acid was estimated. Stresses occurring in the ground mass in the natural state were determined after the entry of acid into it and after the chemical fixation of it with sodium silicate. All the parameters of the stress-strain state of the ground mass were obtained under a number of physical and mechanical conditions. It was determined that following the work on the silicatization of the ground mass contaminated with peracetic acid the quantity of strain decreased by 26.11 to 48.9%. The comparison of the results of stress calculations indicates the stress reduction in the ground mass in 1.8 – 2.6 times after its fixing.
Highlights
There is a problem resulting from the ground contamination with industrial effluents directly under industrial buildings, which in turn leads to the swelling of ground bases, the shifting of foundations and the destruction of building structures [1, 2, 5]
Additional pressure caused by the ground swelling as an external load applied to the foundations in the areas of the swelling knoll influence is recommended to be taken into account
None of the methods described previously provides a solution to the problem that deals with the stress-strain state (SSS) evaluation of the ground mass which is under the influence of chemically active substances and, in particular, under the influence of peracetic acid
Summary
There is a problem resulting from the ground contamination with industrial effluents directly under industrial buildings, which in turn leads to the swelling of ground bases, the shifting of foundations and the destruction of building structures [1, 2, 5]. When designing it is necessary to take into account the swelling effect on the entire “ground base–foundation–building” system for more reliable operation of the structure. The existing standards [3, 4] only regulate the design rules for swelling grounds but do not provide an opportunity to predict the further behavior of the ground base in case of chemical contamination. Not much is known about the behavior of the swelling grounds after their chemical fixation and the stress-strain state (SSS) of the “fixed ground base–foundation – building” system
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