Comparative Analysis of the Lateritic Soil of Brasília and Soil Mixed with Vermiculite for Urban Cavities
作者机构：Faculty of Applied Social Sciences and TechnologyUniversity Center of BrasíliaBrasília 70790-075Brazil
出 版 物：《Journal of Civil Engineering and Architecture》 (土木工程与建筑（英文版）)
年 卷 期：2020年第14卷第7期
页 面：385-390页
学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学]
主 题：Soil mixed with vermiculite reconstitution of cavities reduction of specific density
摘 要：Civil construction has high demand for new procedures and technologies capable of generating better results in numerous situations throughout the ***,cavities in urban areas are commonly used due to the implantation of commercial and residential developments with more than two floors,seeking a better use of the nobler areas of the big *** geotechnical terms,the filling of these cavities,with the local soil,especially in the Federal District,lateritic soils,can represent additional efforts for the structures and foundations and lead to a compromise of the technical and functional performance of the same,compromising the efficiency and the economy of the *** this sense,this research evaluates the mechanical behavior of the mixtures,using GEO5 Software,Containment Design and Verification Modules,presenting an alternative to fill cavities in urban regions,with a mixture of material with lower specific density in relation to the soil *** Normal compression tests,simple direct shear saturation and sample expansibility were *** results showed a reduction of 38%in the strength of the reinforced concrete curtain,as well as a 25%reduction in maximum bending moments and 31%in maximum shear forces,and a reduction of about 32%in the displacements of the structure to the soil with addition of expanded vermiculite for tests obtained in the saturated *** the compositions of cement soil,expanded vermiculite soil and soil cement and expanded vermiculite,the deformations were of the order of 0.3%,0.4%and 0.2%,respectively.
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