Estudo de ensaios de arrancamento de geogrelha com utilização de equipamento reduzido / Study of geogrid pull-out tests using a small scale equipment

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

This work presents results of geogrid pullout tests conducted using small scale equipment. The pullout load was applied using a universal load frame, with a maximum capacity of 30kN, capable of recording the pullout load and front displacement. In addition, the test was instrumented with an earth pressure cell installed at the level of the geogrid inclusion. The primary advantage of this equipment is the small volume of soil used in test preparation, resulting in reduced testing time, greater control of the water content and degree of compaction, and significant reduction in overall testing costs. Furthermore, a significant area of the state of Sao Paulo in Brazil is covered by fine grained soils which could be tested according to its pullout behavior using the proposed equipment. To investigate the feasibility of the small scale test facility, comparisons were made between the coefficient of interaction obtained from tests of small and large dimensions. The results show that for the tested materials there were no differences between pull out parameters from both equipment. Additionally it was investigated the effects of testing speed, confining pressure, sample dimensions, and soil and geogrid materials. Results of these tests are presented and discussed

ASSUNTO(S)

geossintético e solo reforçado small scale geogrid geosynthetics and reinforces soil geogrelha pullout test pequeno porte arrancamento

ACESSO AO ARTIGO

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