The instability of structure lies mainly in the properties of soil under which it is constructed. For instance, if the soil is having weak engineering properties, there are chances of crack formation and settlement. One of the major problematic soils of this type are the Black cotton soils which are mainly classified as expansive soils. They are obviously a hindrance to the strength and stability of structures. The present study deals with the improvement of soil characteristics with the addition of Jute fiber sheet. A series of Triaxial and CBR tests were done on normal soil and Jute fiber reinforced one. The observed values indicate a significant contribution of strength improvement when fiber sheets were added.

Geopolymer is emerging as an alternate green material in the construction industry in order to produce ecofriendly concrete. it is necessary to replace cement by industrial by products such as flyash , GGBS with alkaline liquid such as sodium hydroxide of 8M and 10M and sodium silicate solution by varying percentage of polypropylene fiber 0.9 and 1.35kg per m 3 to the volume of the binder content for M40 mix designation. The main focus to study will be investigating the increasing the compressive strength of the concrete after adding polypropylene fiber.