Concrete bridge-deck rapid paving mortar and preparation method thereof

Abstract

The invention discloses concrete bridge-deck rapid paving mortar and a preparation method thereof. The mortar comprises the following raw materials by weight percent: 20 to 30 percent of high-strength special cement, 20 to 35 percent of ordinary cement, 1 to 2.5 percent of swelling agent, 0.1 to 0.2 percent of water reducing agent, 1 to 5 percent of hard gypsum, 0.01 to 0.1 percent of retarder, 0.05 to 0.1 percent of anti-cracking fibers, 1 to 2 percent of dispersible gelatine powder, 0.05 to 1 percent of anti-foaming agent and 46 to 56 percent of water washing sand. The mortar is the high-performance mortar which can be solidified in a short time and has strength, not only has a certain operating time, but also can enable the strength to reach more than 30 MPa within 6h, and can meet the application requirement after simple maintenance, so that the delivery time of the engineering can be shortened, and the disturbance for the residents can be efficiently reduced. The concrete bridge-deck rapid paving mortar also has the advantages of convenience in construction, rapidness in hardening, short time for reaching the strength, large flow state, self compactness and environmental protection.

Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a rapid paving mortar for concrete bridge decks and a preparation method thereof. Background technique

[0002] At present, concrete is generally used for construction or maintenance of bridge decks on expressways or ordinary roads. Due to the shortcomings of ordinary concrete in the prior art, such as slow setting time, long maintenance time, and long traffic opening time, the construction or maintenance time is long and expensive. Many problems affecting traffic. my country still lacks corresponding products, and the market lacks rapid paving mortar specially used for concrete bridge decks. Therefore, it is necessary to develop special materials with excellent performance in combination with the actual and needs of concrete bridge deck construction or maintenance pavement in my country. If can provide a kind of concrete bridge deck rapid pavement mortar...