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ABSTRACT
This study evaluated the impact of cement grout as a stabilizing agent for the improvement of the bearing capacity of sandy soil by grouting and the use of Geographic Information system (GIS) to provide the necessary geographical information. This study was achieved by conducting the collection of soil sample in Iguoshodin community at a depth of 1.5m and the samples were taken to the University of Benin soil laboratory centre to conduct the necessary laboratory tests. These tests were natural moisture content test, specific gravity test, sieve analysis test, cone penetrometer test and standard proctor compaction test, all in accordance with the British Standard BS 1377: Part 2: 1990. The Geographic Information System (GIS) was used to carry out queries of the attributes of the soil samples in reference to the available soil standards. As a result, the time it takes to obtain the data is greatly reduced because it is constantly available. Different percentages of the cement grout produced significant results. 2% cement grout with sample I gave an OMC and MDD of 13.38% and 1.67g/cm3 respectively and 4% cement grout gave an OMC and MDD of 11.26% and 1.72g/cm3 respectively and 6% cement grout gave an OMC and MDD of 12.3% and 1.75g/cm3 respectively as compared to the natural state of sample I with OMC and MDD of 19.93% and 1.62g/cm3 respectively. The result of 2% cement grout with sample II gave an OMC and MDD of 10.76% and 1.72g/cm3 respectively and 4% cement grout gave an OMC and MDD of 8.32% and 1.77g/cm3 respectively and 4% cement grout gave an OMC and MDD of 9.8% and 1.78g/cm3 respectively as compared to the natural state of sample II with an OMC and MDD of 20.09% and 1.59g/cm3 . The results of the samples shows that 4% cement is more effective than 2% and 6% cement grout and is in accordance with previous studies done in this area.
