Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2002
Volume 5
Issue 2
Topic:
Agricultural Engineering
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Błażejczak D. , Dawidowski B. 2002. THE INFLUENCE OF THE AGE-HARDENING OF SILTY LOAMY SAND ON ITS STRENGTH DETEMINING BY PRE-COMPACTION STRESS, EJPAU 5(2), #02.
Available Online: http://www.ejpau.media.pl/volume5/issue2/engineering/abs-02.html

THE INFLUENCE OF THE AGE-HARDENING OF SILTY LOAMY SAND ON ITS STRENGTH DETEMINING BY PRE-COMPACTION STRESS

Dariusz Błażejczak, Bronisław J. Dawidowski

 

ABSTRACT



The influence of age-hardening of silty loamy sand soil on its strength, characterised by pre-compaction stress, was investigated. Soil samples were uniaxially moulded in steel rings at water contents 11, 15, 19% w/w by preloading up to 1.35, 1.45, 1.55 g·cm-3. Obtained pre-compacted samples were stored in sealed plastic bags at constant water content. Later, after approximately 0.1, 8, 24, 72, 144 h, samples were removed from the bags and reloaded. The obtained strain-stress relationships were used for calculation of pre-compaction stress values. Presented experimental results show the significant increase in soil strength within a few days after the soil samples were preloaded.

Key words: soil, pre-compaction stress, age-hardening.