1

MODROBS

1995

801F-1/RD-II/MOD/94

Modernisation of Civil Engg.lab

25.8.1995

29.3.1995

7.0

2

MODROBS

1999

8017/RD-II/MOD/DEG(218)/98-99

CAD Lab

24.3.1999

26.5.1999

6.0

3

MODROBS

2003

8021/RD/PROJ/MOD-80/2002-03

Modernisation of Structural & Soil Lab

10.3.2003

25.4.2003

11

4

MODROBS

2009

8024/RID/BOR/MOD/065/9/10

Modernisation of Survey lab

21.12.2009

21.12.2009

3.75

MODROBS

2013

-

Modernisation of Structural Engineeringlab

July,2013

July, 20113

In situations like occurrence of earthquakes and bomb blasts, the subsoil’s / earthen structures are subjected to dynamic load in addition to static load. Fine sands and silty sands require special attention as they have less strength and undergo large displacements under dynamic loading. A coefficient called “Coefficient of elastic uniform compression (Cu)” (which is used in design of machine foundations) is calculated for unreinforced and synthetic fiber reinforced sea sand by conducting small scale model cyclic plate load tests. The Recron 3s polypropylene fibers in varying percentages ranging from 0.5 to 1.5 in increments of 0.5 are added to sea sand and zone –II sand. The results of the study indicated that the values of sea sand and Zone II sand increased by about 25% and 40% respectively with addition of optimum amounts of synthetic fiber (1.5% by weight in case of sea sand and 0.5% by weight in case of Zone-II sand).

Glass Fiber Reinforced Concrete (GFRC) is recent-mid introduction in the field of concrete technology. To improve the concrete properties, the system was named alkali resistance glass fiber reinforced concrete. The glass fiber reinforced concrete has an advantage of light weight, fire resistance, good appearance, high compressive strength and flexural strength.

In the experimental investigation the alkali resistance Glass Fibers and Crumb Rubber was used to study the effect on compressive strength, split tensile strength, flexural strength and Stress-Strain behaviour of M40 grade  concrete with various percentages i.e; 0%, 5%, 10%, 15%, 20%, 25% of crumb rubber as partial replacement of fine aggregate by volume and also addition of glass fiber of 1.5% by weight in cement.      

The  aim of the work done is not to find a stronger mix instead of that to find a concrete mix strong enough to fulfill desired requirements. From the test results, it was found out that at 28 days Strength of concrete the replacement can be done up to 25 %. Up to 15% Compressive Strength, Split-Tensile Strength, Flexural Strength and Stress-Strain relationship increases.

Glass Fiber Reinforced Concrete (GFRC) is recent-mid introduction in the field of concrete technology. To improve the concrete properties, the system was named alkali resistance glass fiber reinforced concrete. The glass fiber reinforced concrete has an advantage of light weight, fire resistance, good appearance, high compressive strength and flexural strength.

In the experimental investigation the alkali resistance Glass Fibers and Crumb Rubber was used to study the effect on compressive strength, split tensile strength, flexural strength and Stress-Strain behaviour of M40 grade  concrete with various percentages i.e; 0%, 5%, 10%, 15%, 20%, 25% of crumb rubber as partial replacement of fine aggregate by volume and also addition of glass fiber of 1.5% by weight in cement.      

The  aim of the work done is not to find a stronger mix instead of that to find a concrete mix strong enough to fulfill desired requirements. From the test results, it was found out that at 28 days Strength of concrete the replacement can be done up to 25 %. Up to 15% Compressive Strength, Split-Tensile Strength, Flexural Strength and Stress-Strain relationship increases.

Failure of slope may lead to loss of life and property. Slope failures, or landslides, typically occur where a slope is over-steep, where fill material is not compacted, or where cuts in natural soils encounter groundwater or zones of weak material. Slopes for all the embankments might not be same. Steep slopes are not stable and have more chance of failure. In some cases slope fails due to the failure of soil mass. Hence, such slopes are to be stabilized against failure, which is done by placing a Geotextiles in it. Geotextiles due to its high tensile strength can be used to increase the load carrying capacity of the soil.

The present study is aimed at the reinforcements of slopes by placing Geotextiles which prevents the failures in slopes and also increases the load carrying capacity of an embankment. Analysis of stresses in the embankment is done and a comparison between embankments with and without Geotextiles is described in detail.

The present study has been conducted to analyze environmental impacts of soil erosion on groundwater recharge in the Pavanje river basin, Dakshina Kannada district-Karnataka. Soil erosion is a universal and fundamental problem that is strongly modified by land clearance, forestry, constructions, surface mining and urbanization. Land and water are two most vital natural resources of the world and hence these resource must be conserved carefully to protect environment to maintain ecological balance. Estimation of soil erosion and groundwater potential zones is one of the pre-requisites for conservation and management of water resource an also for many hydraulic applications. The soil erosion of the catchment area has been estimated in this study by using RUSLE model. The major factors of this model are R is rainfall erosivity, K is soil erodibility, L is slope length, S is slope steepness, C is crop management factor and P is practice management factor, which constitutes total soil erosion (A) is estimated by A= RKLSCP using RUSLE model. The above factors has been considered in the soil erosion model and integrated to develop final soil erosion map of the river basin, by using ArcGIS software. Delineation of various groundwater potential zones has been carried out for the assessment of groundwater availability in the coastal part of Dakshina Kannada district of Karnataka using remote sensing and GIS technique. Satellite Data (LISS-3 image, 23.5m resolution of year 2009, RGB bands-3 2 1) and Digital Elevation Model (ASTER DEM, 30 m resolution) data have been used in the present study to prepare various thematic maps such as (geomorphology, geology, lithology, lineament density, LU/LC and slope map). On the basis of relative contribution of each thematic maps towards groundwater potential, the weightage of each thematic maps has been assigned by using weighted index overlay method (WIOM). Further within each thematic maps, ranking has been assigned for each of the features. The final Groundwater potential zone map is developed. RS and GIS techniques has been helpful in identifying groundwater potential zones, the study area categorized in to five zones viz. (very poor, poor, moderate, good and excellent).

Index Terms— RS & GIS, Satellite data, Soil Erosion, RUSLE model, Groundwater potential zone and weighted index overlay method