Grouting of soil Decreases the Engineering problems by changin the Water table of Al-Abbas Holy Shrine

Abstract

The water table was increasing in the subsoil of Al-Abbas holy Shrine during 1990, Al-Khafaji in 2010 determined from In-situ information, boring, drilling, sampling, and geophysical survey (such as seismic cross hole and GPR surveys) the spreading excavation and weak zones phenomena underground surface within the soil of study area, and he recommended to improve the geotechnical properties (Rigidity, stiffness, . . etc ) of the subsoil underneath the foundation, grouting techniques with special precautions should be taken to ensure that these soft soils are not disturbed during grouting operations and must be sure that the depth of grouting don’t crossing the clay layer, borehole not exceed (9)m. for the present site. The total amount of cement material(Portland cement) where injected to more than (1146)ton and mixed with suitable chemical material (Interplast HE50) reach's to (12657)litters through (179) boreholes. According to mixed design cement, water and interplast HE50 make. The water table is (29.44)m. depth above sea level(S.L) before grouting in 2008 and become (28.69)m after it in 2011.