The purpose of this research is to study the improvement of soil properties by the
addition of lime in certain percentages. The soil used in this study was obtained from the
Baseet region, which is located by the Syrian coast. We have studied the e
ffect of lime on
the consistency, the swell characteristics and the shear strength of soil.
The results of this study have shown a remarkable reduction of both liquid and
shrinkage limits, and the plasticity index with the increase of lime percentage. As for
plasticity limit, it increases in the beginning then decreases slightly with the rising of lime
percentage.
For the volumetric variation, the susceptibility of swelling and the shrinkage of
improved soil with lime decrease, and the free swelling and the swelling pressure become
almost negligible with 4% of lime.
Based on the shear strength results, we can indicate a notable increase in the friction
angle and cohesion of soil with increasing of lime percentage up to 8% of lime. After that,
these two factors decrease.
Research offers expanded version of the relationship to improve measurement
accuracy (provided by Otrenbski), which include correlated or free geodetic networks, with
correlated or incorrelated observations, which are processed according to the Lea
st Square
theory. In addition to enhancing the Global accuracy, Research gives additional formula
takes into consideration the enhancement of each observation (local precision). the validity
of the proposed formula was proved depending on the Idempotent matrix.
In addition to the general concept of the reliability of geodetic network (described in
literature), Research gives the formula of the relationship between improvement of
measurement accuracy and one of internal reliability features (provided by Pelzer), and
used in the evaluation of geodetic measurements. Research find and gives the basic
mathematical indicators of the interaction of processing model with the occurrence of
errors in geodetic measurements.
