Sulfur-containing polypropylene composite fiber reinforced sulfur concrete and preparation method thereof

Abstract

The invention discloses sulfur-containing polypropylene composite fiber enhanced sulfur concrete and a preparation method thereof. The concrete is prepared from the following ingredients in percentage by mass: 40 to 60 percent of modified sulfur, 15 to 25 percent of coarse aggregate, 10 to 25 percent of fine aggregate, 1 to 10 percent of fillings and 0.1 to 1.5 percent of polypropylene composite modified fiber. The preparation method sequentially comprises the following steps of 1, preparing polypropylene grafted sulfur; 2, preparing polypropylene composite modified fiber; 3, preparing modified sulfur; 4, taking the coarse aggregate, the fine aggregate, the fillings, the modified sulfur and the polypropylene composite modified fiber according to the designed quantity, and sufficiently and uniformly stirring the materials to obtain fiber enhanced sulfur concrete. Practice proves that the sulfur-containing polypropylene composite fiber enhanced sulfur concrete has the advantages that the mechanical property is excellent; the corrosion performance is high; the anti-cracking performance is good, and the like, wherein the bonding performance between the polypropylene composite fiber and the sulfur concrete interface is good; in addition, the operation of the preparation method is simple; the cost is low.

Description

technical field [0001] The invention belongs to the technical field of concrete for building construction, and specifically refers to a sulfur-containing polypropylene composite fiber-reinforced sulfur concrete and a preparation method thereof. Background technique [0002] Sulfur concrete is a kind of concrete with unique properties. It uses sulfur as a cementitious material to coagulate aggregates such as sand and stone. Sulfur concrete has good mechanical properties, excellent corrosion resistance, and extremely low water absorption. It also has the advantages of anti-permeation, quick-setting, anti-ultraviolet, anti-freezing and thawing at low temperatures, and can be melted and recycled repeatedly. Sulfur concrete has been used in temporary bearing structures, chemical corrosion resistant coatings, bridges and roads, etc. However, sulfur concrete has low flexural strength and obvious brittleness, so it is necessary to strengthen sulfur concrete to expand its applicatio...

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Problems solved by technology

If the adhesion is not good, it will not only fail to strengthen and toughen, but may reduce the mechanical properties of concrete

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