Super-early strength inorganic mixed material for pavement fast repair, and preparation method and use method thereof

Abstract

The invention discloses a super-early strength inorganic mixed material for pavement fast repair, and a preparation method and a use method thereof, and relates to the field of road materials. The super-early strength mixed material is prepared from the following ingredients in percentage by mass: 2.1 to 10.4 percent of metakaolin, 1.2 to 11.1 percent of alkali activators, 4.2 to 8.3 percent of water and 70.2 to 92.5 percent of aggregates. The super-early strength inorganic mixed material has the advantages that the health preservation time is short; the physical performance is good; the asphalt pavement fast repairing requirements can be met. The preparation method comprises the steps of uniformly mixing metakaolin, alkali activator, water and aggregates under the normal temperature condition; preparing the super-early strength inorganic mixed material. The preparation method is simple; the mixed material uniformity is higher; the intensity forming is faster. The use method comprisesthe steps of uniformly spreading the super-early strength inorganic mixed material onto a pit groove of the pavement to be repaired and preforming compaction. The operation is simple and convenient.

Description

technical field [0001] The invention relates to the field of road materials, in particular to an ultra-early-strength inorganic mixture used for quick repair of road surfaces and a preparation method and use method thereof. Background technique [0002] At present, the commonly used repair materials for pavement include cement emulsified asphalt mixture and cement concrete repair materials. The use of cement emulsified asphalt mixture to repair the road surface is simple in construction, but because it contains a lot of water, the asphalt starts to have strength only when the water in the mixture evaporates and the asphalt is demulsified. Conducive to shortening the time when the road is open to traffic. Although cement concrete repair materials can meet the needs of rapid opening to traffic, they have high resilience modulus and poor later strength and durability. SUMMARY OF THE INVENTION [0003] Aiming at the problems existing in the prior art, the present invention p...

AI Technical Summary

Problems solved by technology

Using cement emulsified asphalt mixture to repair the road surface is easy to construct, but because it contains a lot of water, the asphalt begins to have strength only when the water in the mixture evaporates and the asphalt breaks. Therefore, not only the temperature stability is poor, the early strength is low, and the curing period is long. Conducive to shortening the time the road is open to traffic

Although cement concrete repair materials can meet the needs of rapid opening to traffic, they have a high modulus of resilience and poor later strength and durability

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