High-strength concrete based on rubber fiber compounding and preparation method thereof

Abstract

The invention discloses high-strength concrete based on rubber fiber compounding. The high-strength concrete is prepared from, by weight, 42-46 parts of Portland cement, 18-22 parts of fine sand, 24-28 parts of pre-treated composite fibers, 16-22 parts of modified silicone rubber, 8-14 parts of wollastonite, 5-9 parts of polycarboxylate superplasticizer, 4-10 parts of early strength agent, 3-5 parts of swelling chlorite powder, 2-6 parts of faujasite, 1-3 parts of gypsum powder and 18-24 parts of deionized water. According to the high-strength concrete based on rubber fiber compounding, afterthe fibers and the rubber are pre-treated, surface energy of the concrete is improved, the fibers and the rubber are compounded, the strength of the concrete can be improved, and high use value and good application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to high-strength concrete based on rubber fiber composite and a preparation method thereof. Background technique [0002] Concrete is one of the most important contemporary civil engineering materials. It is prepared in a certain proportion by cementitious materials, granular aggregates (also known as aggregates), water, and admixtures and admixtures added when necessary. It is a kind of artificial stone material that is uniformly stirred, densely formed, cured and hardened. Concrete has the characteristics of rich raw materials, low price and simple production process, so its consumption is increasing. At the same time, concrete also has high compressive strength and durability. Good, wide range of strength grades, etc. These characteristics make it widely used. The most important mechanical properties of concrete after hardening refer to the ability of concrete to resist stress s...

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Problems solved by technology

[0003] The existing Chinese patent literature (publication number: CN105481323B) discloses a carbon fiber composite concrete and its preparation method; the composition of the composite concrete is as follows: 5-10 parts of Portland cement, 10-20 parts of natural fine river sand , 15-30 parts of crushed stone, 3-6 parts of silica fume, 1-2 parts of fly ash, 3.5-7 parts of water reducer, chopped carbon fiber, steel fiber and rod-shaped X-type polymer are also added to the composite concrete. Propylene fibers, the consumption of the chopped carbon fibers is 0.8-2.1% of the total volume of the concrete, the consumption of the steel fibers is 0.2-0.5% of the total volume of the concrete, and the consumption of the rod-shaped X-type polypropylene fibers is 0.1% of the total volume of the concrete -0.3%, although the fiber has the advantages of high strength and good elastic film, but the strength of concrete caused by different treatment methods will be very different

[0004] Chinese patent document (publication number: CN105712680B) discloses a kind of fiber composite concrete; The mass parts composition of described composite concrete is as follows: Portland cement 100-200 parts, fine river sand 200-400 parts, fly ash 30-50 parts 8-12 parts of silica fume, 500-800 parts of aggregate, 6-12 parts of polyoxymethylene fiber, 3.6-6.4 parts of bamboo fiber, 4.8-8 parts of alkali-resistant glass fiber, 25-35 parts of polycarboxylate water reducer Parts, 8-12 parts of cellulose grafted chitosan, 1.2-4.8 parts of silicon carbide, 4.8-8.8 parts of light silicon fiber crack resistance reinforcing agent, 1.8-3.6 parts of cement mortar defoamer, 2.4-5.4 parts of antifreeze, With 5-8 parts of rust inhibitor, the bonding force between fibers is poor, which leads to imperfect performance

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