Method for paving prefabricated coilable cementitious composites (ECC) with high-ductility

Abstract

The invention provides a method for paving prefabricated coilable engineered cementitious composites (ECC), which comprises the following steps: 1, prefabricating an ECC component, wherein the length of the ECC component is 100-200 m, the width is 3-4 m, and the thickness is 1-5 cm; 2, arranging a roller (1) on a support (4), and connecting a centre shaft of the roller (1) with a motor (3) so as to form a coiling device; 3, lifting one end of the prefabricated ECC component so as to lap the end of the prefabricated ECC component on the roller (1) of the coiling device, and on a length of the ECC component close to the lifted part of the ECC component, arranging a plurality of antiskid hairbrush boards (2) which cross the width of the ECC; 4, starting the motor (3) so as to clockwise drivethe roller (1) to rotate by the centre shaft of the roller (1) and then coil the ECC component; and 5, transporting the roller (1) coiling the ECC component to a road construction site, aligning the two side edges of the roller with the direction of a lane, and reversely pushing the roller, then gradually releasing the ECC component to pave on a substrate or a surface layer until the paving is completed.

Description

technical field [0001] The invention belongs to the technical field of cement concrete pavement (bridge deck) construction, and in particular relates to prefabricated rollable high ductility cement-based composite material pavement equipment and technology. Background technique [0002] As a building material, the performance of cement concrete has been improved to a certain extent, but there are still deficiencies when it is applied to infrastructure construction, mainly in the following three aspects: brittle failure under extreme loads; Fatigue damage; Sustainability issues in reinforced concrete structures. High ductility fiber reinforced cementitious composite (engineered cementitious composite, abbreviated as ECC) is a kind of fiber reinforced cementitious composite material that exhibits high ductility under tensile and shear loads through systematic design. ECC adopts a material design method based on micromechanics. The ECC with a volume content of polyvinyl alcoho...

AI Technical Summary

Problems solved by technology

[0002] As a building material, the performance of cement concrete has been improved to a certain extent, but there are still deficiencies when it is applied to infrastructure construction, mainly in the following three aspects: brittle failure under extreme loads; Fatigue damage; sustainability issues in reinforced concrete structures

[0005] Regarding cement concrete pavement (bridge deck) paving technologies, there are slipform mechanical paving, three-roller unit paving, track paver paving and small machine paving, etc., but they cannot be well adapted to ECC materials. laying

The use of ECC materials as the functional layer between the surface layer of cement concrete pavement (bridge deck) and the base layer, and the surface layer of pavement (bridge deck) are rarely seen in related engineering cases, especially the construction (pavement) equipment and technology are not effective. plan

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