The paper deals with the possibility of using the acoustic emission(AE)measurement for the identification of cracks and failure in fibre concrete slabs in interaction with subsoil.In this specific task it is not possible to check visually cracking on the slab bottom surface.The research task included an experimental load test of a slab and supplemented laboratory testing to determine the mechanical properties of fibre concrete.The concrete used has a dosage of 25 kg/m~3 fibres.Laboratory tests included cube and cylindrical compressive strength, flexural strength and split tensile strength.Homogeneity of the concrete mixture, i.e.uniform distribution of the fibres, was proven with testing of the split tensile strength both evenly and perpendicularly to the direction of filling the concrete mixture into the form.Experimental load test of slab on subsoil was performed on fibre concrete slab with plan dimensions 2000 x 2000 mm and thickness 150 mm.Concrete slab was loaded in the middle with force load step 75 kN.AE measurements were provided using track sensors.
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机译：本文涉及使用声发射（AE）测量的可能性，以识别纤维混凝土板中的纤维混凝土板与亚底的相互作用。在该特定任务中，不可能在板坯底表面上检查视觉裂缝。研究任务包括板坯的实验载荷试验，并补充了实验室检测，以确定纤维混凝土的机械性能。使用的混凝土的用量为25kg / m〜3纤维状。制造性测试包括立方体和圆柱形抗压强度，弯曲强度和弯曲强度分裂拉伸强度。经过均匀地，纤维的混凝土混合物的均匀性，纤维的分布，均匀地和垂直于将混凝土混合物填充到填充混凝土混合物中的方向的方向。底层的平板载荷试验在带有平面尺寸2000 x 2000mm和厚度150 mm的纤维混凝土板上进行。在中间机智中加载了厚度150 mm。CONCRETE板H强载荷步骤75 KN.AE使用轨道传感器提供测量。
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