![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The purpose of this study was to explore the effect of nano-scale silica on cement modification. In this study, nano-SiO2 particle materials were prepared, and then the properties of the nano-materials were analyzed by monofilament pull-out test and different amounts of SAE and PE in the preparation of nano-SiO2. Through the research, it was found that the appearance of the new nanomaterials was characterized by that the contact interface between the carbon fiber modified by nano-silica and the cement-based was dense, and the pores were not observed. Moreover, the interface was strongly bonded and the scratches were very obvious. This result indicates that the biosensor was successfully constructed; in the analysis of the influence of different content of SAE and PE on nanomaterials, it was found that the maximum increase in flexural strength was achieved when the content was 3% at 28d in the flexural strength study; in the study of compressive strength, it was found that the adulterate amount of 6% was a cutoff point for the decrease of compressive strength; when PE content was 3%, the flexural strength and compressive strength were increased to the maximum. In the load-displacement curve analysis of carbon fiber monofilament pull-out test, the modified fiber and cement matrix formed greater physical adsorption force and chemical adhesive force. The experiment showed that the critical length of cement can be significantly reduced after nano and modified research, so as to improve the strengthening effect of carbon fiber in cement matrix. Although there are some deficiencies in the research process, it also provides a basis for the future direction of new materials in the construction industry.