THE INFLUENCE OF ACCELERATION ON THE EFFICIENCY OF SAND COMPACTION TESTS CONDUCTED ON A VIBRATING TABLE
Journal Title: Civil and Environmental Engineering Reports - Year 2017, Vol 1, Issue 24
Abstract
The paper presents a standard vibrating table for fresh concrete testing adopted for determination of maximum dry density (dmax) of sand. Vibration is an efficient method for coarse soil compaction therefore vibrating tables are useful for dmax determination. Acceleration that the soil is subject to is one of the basic parameters of efficient compaction. A vibrating table with inertial excitation was supplemented by a frequency converter and subjected to dynamic tests. The results of measurements of dynamic parameters are included. The paper presents problems connected with this method and describes the relationship between efficiency of compaction and accelerations which the soil is subjected to.
Authors and Affiliations
Waldemar St. SZAJNA
APPLICATION OF STEEL BAR BRACINGS IN RENOVATION AND MODERNIZATION OF HISTORIC BUILDINGS
The use of steel bracings is possible in all four stages of engineering activities in the renovation and modernization of historic buildings, i. e.: protecting, repairing, strengthening and rebuilding. Steel bracings are...
LIMIT ANALYSIS OF GEOMETRICALLY HARDENING COMPOSITE STEEL-CONCRETE SYSTEMS
The paper considers some results of creating load-carrying composite systems that have uprated strength, rigidity and safety, and therefore are called geometrically (self-) hardening systems. The optimization mathematic...
OPTIMIZATION OF MEASUREMENT POINTS CHOICE IN PREPARATION OF GREEN AREAS ACOUSTIC MAP
The aim of the article is to analyze the selection of measuring points of sustainable sound level in the spa park. A set of points should allow to make on their basis an acoustic climate map for the park at certain times...
THE PROBLEM OF ADAPTING EXISTING RESIDENTIAL BUILDINGS IN THE COUNTRY TO THE REQUIREMENTS OF ECOLOGY
The article presents the results of direct research on residential buildings and their modernization in selected ecological farms of the Mazovia region. The research area covered two poviats (counties) in the Mazowieckie...
Effect of cyclic freezing on microstructure parameters of monoionic bentonites
In this study the effects of cyclic freezing on microstructure of monomineral forms of bentonite were investigated. Samples of the non-frozen soil and the soil frozen were tested using scanning electron microscope SEM. T...