Tensile bond test of steel fibre reinforced concrete

摘要

The test arrangement consists of two mild steel blocks 16,18 with the fibre/matrix interface 17/19 assembled between. A layer of a strong cold cure epoxy adhesive 15 is applied to one block surface and the required number of fibres are placed adjacent to each other on the adhesive layer to form a bed. After the adhesive has cured the block is placed on an alignment plate with a small gap from the second block 18. The gap edges are sealed and the matrix is poured into position to bond the fibres to the other steel block. The arrangement is loaded in tension via bars through holes 20 in the blocks thus ensuring alignment perpendicular to the fibre bed plane. Comparison with mild steel is also made by bonding the two blocks directly with the matrix.