Latex cement mortar poured anti-rutting pavement structure and paving method thereof
AssigneesReseach Institute of Highway Ministry of Transport, Chongqing Construction Engineering Group Corporation Limited
InventorsKe Zhong, Yifei Wu, Sang Luo, Bo Chen, Guoqiang Liu, Xiaochen Ma, Jing Ding, Chengyong Hu, Guanghua Yue, Ronghua Chang
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Abstract
An anti-rutting pavement structure is arranged consecutively from bottom to top, a semi-rigid base layer, a SBS emulsified asphalt adhesive layer, a Type II latex cement mortar poured asphalt concrete lower layer, a Type I latex cement mortar poured asphalt concrete middle layer and a high viscosity modified asphalt SMA-13 concrete surface layer.
Claims7
An anti-rutting pavement structure, characterized in that it comprises, arranged consecutively from bottom to top, a semi-rigid base layer (1), a SBS emulsified asphalt adhesive layer (2), a Type II latex cement mortar poured asphalt concrete lower layer (3), a Type I latex cement mortar poured asphalt concrete middle layer (4) and a high viscosity modified asphalt SMA-13 concrete surface layer (5);
- the Type II latex cement mortar poured asphalt concrete lower layer (3) is composed of a macropore open-graded asphalt mixture and a latex cement mortar;
- wherein the mass ratio of the macropore open-graded asphalt mixture and the latex cement mortar is 5˜7:1;
- the porosity of the macropore open-graded asphalt mixture is 25˜35%, and it is formed by mixing an asphalt mixture with an aggregate smaller than 19 mm in a mass ratio of 4˜8:
- 100;
- the latex cement mortar is formed by mixing a latex modifier, cement, standard sand and water in a mass ratio of 7:100:25:65;
- wherein the latex cement mortar is impregnated into the macropore open-graded asphalt mixture through the pores of the macropore-opened asphalt mixture;
- the Type I latex cement mortar poured asphalt concrete middle layer (4) is composed of a macropore open-graded asphalt mixture and a latex cement mortar;
- wherein the mass ratio of the macropore open-graded asphalt mixture and the latex cement mortar is 5˜7:1;
- the porosity of the macropore open-graded asphalt mixture is 25˜35%, and it is formed by mixing an asphalt mixture with an aggregate smaller than 16 mm in a mass ratio of 4˜8:
- 100;
- the latex cement mortar is formed by mixing a latex modifier, cement, standard sand and water in a mass ratio of 6:100:20:60;
- wherein the latex cement mortar is impregnated into the macropore open-graded asphalt mixture through the pores of the macropore-opened asphalt mixture;
- the high viscosity modified asphalt SMA-13 concrete surface layer (5) is formed by mixing a high viscosity modified asphalt binder with an aggregate in a mass ratio of 5.5˜6.5:
- 100;
- wherein the high viscosity modified asphalt binder is composed of a Styrene-butadiene-styrene copolymer modified asphalt, a thermoplastic rubber, a bonding resin and a plasticizer, in a mass ratio of 100:
- 10:
- 2:
- 1.
Dependencies are inferred from the claim text.