Hole-blocking-preventing ultra-light sealing material for water seepage test of large-gap asphalt pavement

The invention discloses a hole-blocking-preventing ultra-light sealing material for a water seepage test of a large-gap asphalt pavement. The hole-blocking-preventing ultra-light sealing material is mainly prepared from the following raw materials of: a binder, waterproof putty, a gelling agent, water, a filler, a coloring agent, a defoaming agent, a wetting agent and a mildew preventive, wherein the gelling agent is glutaraldehyde, and the filler is hollow microspheres or a mixture of hollow microspheres and fumed silica. The sealing material has the advantages of good sealing property, no hole blockage, light specific gravity, black color, easiness in storage, convenience in reuse and the like. Accordingly, the inventor also provides a corresponding preparation method. 本发明公开了一种大空隙沥青路面渗水试验防堵孔超轻密封材料，主要由以下原料制成：粘结剂、防水腻子、凝胶剂、水、填料、染色剂、消泡剂、润湿剂、防霉剂；凝胶剂为戊二醛；填料为中空微球或者中空微球和气相白炭黑的混合物。该密封材料具有密封性好、不堵孔、比重轻、颜色黑、易存放且便于重复利用等特点。据此，发明人还建立相应制备方法。