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1. 发明申请

WO2021025548A1 A JOINTLESS CONCRETE COMPOSITE PAVEMENT 审中-公开
公开(公告)号：WO2021025548A1
公开(公告)日：2021-02-11
申请号：PCT/LV2020/050004
申请日：2020-09-14
申请人： PRIMETEH, AS
发明人： CEPURITIS, Rolands , OSLEJS, Janis , PEASE, Bradley Justin , ZEGELIS, Aldis , KAMARS, Janis
IPC分类号： E01C11/22 , E01C7/12 , E01C7/14
摘要： The present invention provides a pavement system that avoids the need for traditional contraction joints regardless of dimension of the pavement, a hitherto unknown property for exterior pavements. The concrete composite pavement, comprises (i) a gap-graded concrete first layer; (ii) a flexural-hardening fiber reinforced mortar second layer, wherein the gap-graded concrete comprises cement, water and coarse aggregate with particles size from 4 to 45 mm, preferably, from 8 to 16 mm; the flexural-hardening fiber reinforced mortar comprises cement; water, fine aggregate with a maximum particle size of not greater than 8 mm; fiber reinforcement comprising of synthetic and/or metal fibers having diameter of 10 to 500 microns and length of 3 to 35 mm; wherein the total thickness of the composite pavement is selected depending on the required maximum service point load, using the following formula H=(F/100) 0.5 x100 mm, where H is the total thickness of the composite pavement and F is maximum service point load; wherein the ratio of the thickness of flexural-hardening fiber reinforced mortar second layer to the total thickness of the composite pavement is within the range of 1:5 to 2:5. The proposed pavement was found to avoid the need for contraction joints in pavements when applied in 100 mm total thickness for a 100 kN back-to-back point load and 50 kN/m² UDL (i.e., total thickness and individual thicknesses of the two materials) while also providing significant improvements to known issues of the materials utilized in the invention.

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