Water Magnesium Stone Fiber-reinforced Concrete Interface Behavior

The concrete is the most important material of civil engineering. This kind of material has numerous advantages , but there are essential weaknesses such as shrink heavy , little ratio of tensile strength and compression strength and low fracture toughness. With the improving of the cement compression strength, the fragility question of the concrete is more outstanding too. The defect of the concrete oneself has limited its range of application and result. So, in order to overcome its above-mentioned shortcomings in an all-round way, the most effective method is mixing with the fibre. Fibre concrete can effective improvement the performance of concrete.Exploring and studying of new-type concrete strengthens materials , which playing a good role in raising strengthen and increasing toughness of the concrete, having better interfaces combination and compatibility with the Portland cement concrete, convenient working and economy , to improving the cement concrete toughness, have certain realistic meanings.This text has explored a kind of new-type concrete strengthens material ~ Fibrous brucite, researched and analyzed the interface performance of Fibrous brucite reinforced concrete Have drawn the following conclusion:First of all, it have introduced various kinds of physics and chemical properties of Fibrous brucite.Secondly, because of the natural special structure of Fibrous brucite (the fibres bunch composed by tiny fibres), in order to make the Fibrous brucite play a good role in raising strengthen and increasing toughness of the concrete, we need to disperse the fibre bunch first before adding the fibre in the concrete. So, we do large quantity of experiments to study the disperse of Fibrous brucite, The scattered result to Fibrous brucite of high-efficient water-reducing agent of UNF-MA naphthalene department is remarkable.Through a large number of experiments, we have studied the interface performance of Fibrous brucite reinforced concrete / cement. With the aid of scan electric microscope , electronic probe and heat-differential analysis, etc., we analyzed the combination and stability of Fibrous brucite reinforced concrete interface. Through researching and analyzing , it is found that Fibrous brucite are steady basically in the concrete, and the effective method to improve the interfacecombination of Fibrous bracite and concrete is summarized.Using the theory of fibre destruction mode and the method of calculating critical length and critical volume rate, we analyze the mode of destroying of Fibrous brucite reinforced concrete through the data of concrete experiment, and summarize the best length and volume rate of Fibrous brucite reinforced concrete.Finally, we summarize the interface performance of Fibrous brucite reinforced concrete, and think Fibrous brucite reinforced concrete interface combination is better; Fibrous brucite are steady in the concrete; The high-efficient water-reducing agent has a tremendous influence on the disperse of Fibrous brucite. Then advised and imagined further research work.