Abstract
This paper considers the issues of improving the strength characteristics of foundations by injecting specially selected composite mortars into soils. The properties of injection mortars used in seismic hazardous areas are improved using various additives consisting of various wastes. The article explores the possibility of using a composite mortar modified with sulfur, which is waste from oil refining. The influence of its addition on the strength characteristics of composite materials is studied. The optimal content of sulfur addition was determined, which makes it possible to increase the strength of building mixtures by 20-30%. The possibility to use a sulfur- modified composite mortar to strengthen an artificial foundation for reducing the seismicity of the construction site was proven.
Highlights
Earthquake-resistant construction is used in areas prone to earthquakes, taking into account the influence of seismic forces on buildings and structures
One of the most significant aspects of ensuring the seismic resistance of designed and operated buildings and structures is the antiseismic increase in the bearing capacity of soil foundations [1,2]
Holes with a diameter of 2–4 cm are drilled into the soil around the foundation with a step of 0.5–1 m and an injector is introduced through which a fixing composite mortar is injected under pressure
Summary
Earthquake-resistant construction is used in areas prone to earthquakes, taking into account the influence of seismic forces on buildings and structures. The likelihood of seismic impact on buildings and structures is determined by the physicochemical and geomorphological properties of soils. One of the most significant aspects of ensuring the seismic resistance of designed and operated buildings and structures is the antiseismic increase in the bearing capacity of soil foundations [1,2]. Strengthening of soils and increasing the stability of building foundations is performed by injecting composite mortars based on various materials [3-8]. For this purpose, holes with a diameter of 2–4 cm are drilled into the soil around the foundation with a step of 0.5–1 m and an injector is introduced through which a fixing composite mortar is injected under pressure. The massif is reinforced within a radius of 0.6–1.2 m around the injector to provide a continuous massif of reinforced soil under the foundation (Fig. 1)
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