Abstract
This paper presents behaviour of Reinforced Baked Clay (RBC) beams under drop weight impact loading. The beams were made of two different grades of baked clay with cube crushing strength of 20 MPa and 30 MPa, respectively. The RBC beams were subjected to repeated drop weight loading by a hammer of weight equal to that of the specimen being tested. The results showed that the impact resistance of the RBC beams was governed by the compressive strength of the baked clay. Failure of grade 20 beams occurred due to irregular cracks and the beams of grade 30 failed by opening of a single crack at mid span. It was observed that the beams of grade 30 had sustained about 1.5 times more number of impacts until steel in tension zone yielded and failed completely after necking.
Highlights
IntroductionSince ancient time, in unbaked and baked states for the construction of houses [1]-[3]
Clay is being used, since ancient time, in unbaked and baked states for the construction of houses [1]-[3]
The Reinforced Baked Clay (RBC) beams of grade 20 got cracked on application of first impact applied at mid span
Summary
Since ancient time, in unbaked and baked states for the construction of houses [1]-[3]. Sun baked and fired bricks are being used for the erection of buildings since the dawn of civilizations in various parts of the world, e.g. in Greece, Mesopotamia and Indus valley [4]-[6]. The buildings constructed of fired bricks are still in existence after hundreds of years. The bricks cast and fired in same manner today have average compressive strength of about 12 MPa [7]. If the clay bricks are compacted mechanically at higher degree of density and fired at standard temperature, they may give higher degree of compressive strength. (2016) Experimental Study of Flexural Behaviour of Reinforced Baked Clay Beams under Impact Loading.
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