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随着现代混凝土技术与我国经济的快速持续发展,混凝土的用量也越来越多,那么随之而来的后期钢筋混凝土结构的维护、修补等问题也日益突出。为了研究微生物诱导碳酸钙沉淀技术对混凝土表面缺陷的修复效果,文章主要选用了喷涂覆膜法,在3种不同的粗糙度和3种不同的覆膜角度下,通过质量变化、毛细吸水系数变化、莱卡显微镜扫描观测3种方法,分别从宏观和微观上分析不同粗糙度和覆膜角度对其修复效果的影响。通过研究表明:最好的修复效果是三级粗糙度,覆膜角度为0°的情况下,质量增加达到了15g,毛细吸水系数降低达到了87.17%,莱卡显微镜表面轮廓减小值达到了5.38mm。质量增加和毛细吸水系数的降低会随着粗糙度的减小和覆膜角度的加大而变小。
With the rapid and continuous development of modern concrete technology and economy in our country, the amount of concrete used is also more and more. Problems such as the maintenance and repair of reinforced concrete structures in the later period also become increasingly prominent. In order to study the effect of microbial-induced calcium carbonate precipitation on the repair of concrete surface defects, the paper mainly selected the spray coating method, and under three different roughness and three different coating angles, through the change of mass, capillary water absorption coefficient , Lycra microscope scanning three methods were analyzed macroscopically and microscopically analyzed the different roughness and film angle on the repair effect. The results show that the best repairing effect is the third grade roughness and the coating angle is 0 °, the mass gain reaches 15g, the capillary water absorption coefficient reduces to 87.17% and the Lycra microscope surface contour reduces to 5.38 mm. The increase of mass and the decrease of capillary water absorption coefficient will decrease with the decrease of roughness and the increase of coating angle.