A polymer modified asphalt waterproof membrane for road and bridge and preparation method thereof

Abstract

The invention relates to a high-polymer modified asphalt waterproof roll for roads and bridges. The high-polymer modified asphalt waterproof roll is manufactured in the way that a bank base layer (1) is used; modified asphalt coating and covering layers (2) and (3) are respectively bonded on the upper and lower surfaces of the bank base layer (1); an isolation layer (4) covers the upper surface of the modified asphalt coating and covering layer (2); an isolation layer (5) covers the lower surface of the modified asphalt coating and covering layer (3); each modified asphalt coating and covering layer is prepared from the following raw materials in percentage by mass: 38 to 44 percent of 90# asphalt, 11 to 17 percent of 200# asphalt, 5 to 8 percent of polypropylene, 1 to 3 percent of SBS, 4 to 6 percent of APAO, 2 to 3 percent of high-temperature modifiers, 15 to 17 percent of modification powder and 10 to 15 percent of filling materials. The product of the high-polymer modified asphalt waterproof roll has the advantages that the high-temperature resistant and low-temperature cracking resistant capability is high; the anti-aging capability is high; the joint deformation capability is high; the high-standard waterproof function is provided; meanwhile, the construction performance of the waterproof roll for roads and bridges is improved; the high-polymer modified asphalt waterproof roll is mainly used for pavement of cast asphalt concrete mixtures.

Description

technical field [0001] The invention relates to a modified asphalt waterproof coiled material and a preparation method thereof, in particular to a high polymer modified asphalt waterproof coiled material for roads and bridges and a preparation method thereof. Background technique [0002] In order to prolong the service life of roads and bridges and reduce the number of maintenance, it is very necessary to make a waterproof layer on the roads and bridges. Since the end of the last century in China, municipal road and bridge waterproofing projects have begun to choose special road and bridge modified asphalt membranes. A series of advantages have improved the service life of roads and bridges to a certain extent. However, there are still many deficiencies in the special waterproofing membranes for roads and bridges currently on the market. For example, the APPII modified asphalt waterproofing membranes used for pouring asphalt concrete mixture pavement require a heat resistan...

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the special waterproofing membranes for roads and bridges currently on the market. For example, the APPII modified asphalt waterproofing membranes used for pouring asphalt concrete mixture pavement require a heat resistance of 160°C and must withstand paving. Rolling construction at high temperature during hot asphalt concrete can avoid rutting deformation caused by the softening of the road surface due to high temperature, but the current products on the market are difficult to meet this requirement

Moreover, after most products achieve high temperature resistance, their flexibility under low temperature conditions is insufficient, and low temperature cracks will occur under cold conditions.

In the building materials industry standard JC / T974-2005, the low-temperature flexibility index of Daoqiao APPII is only -10°C, which is difficult to meet the actual needs.

In addition, the modified asphalt waterproofing membrane generally has good high-temperature performance, but its oiliness during construction is bound to be poor, and the construction site construction progress is slow.

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