A method for determining the secondary impact machine of water-based polymer modified emulsified asphalt mixture
A technology for emulsified asphalt and determination method, which is applied in the field of building materials and can solve the problems of destroying the structural stability of the mixture and unfavorable compactness.
Active Publication Date: 2018-07-27
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology
Since water-based epoxy resin E51 is a thermosetting resin, the strength of the cured water-based polymer modified emulsified asphalt mixture is greatly improved. Destroy the structural stability of the mixture, so it is necessary to develop a method for determining the optimal secondary impact time of the water-based polymer modified emulsified asphalt mixture
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Embodiment 1
[0077] A method for determining the secondary impact machine of water-based polymer modified emulsified asphalt mixture, comprising the following steps:
[0078] 1) Prepare a water-based polymer modified emulsified asphalt mixture with a water content of 5.3%;
[0079] 2) Form 20 water-based polymer-modified emulsified asphalt mixture Marshall specimens, compact each side 50 times, and divide them into 5 groups, 4 in each group;
[0080] 3) Forming 10 water-based polymer modified emulsified asphalt mixture rutting slabs, rolling 14 times at a time, divided into 5 groups, 2 in each group;
[0081] 4) Take the initial mass of each Marshall and rut plate specimens that are not demoulded respectively;
[0082] 5) Place 5 groups of Marshall and 5 groups of rutting plate specimens under normal temperature conditions for health preservation;
[0083] 6) Weigh the mass of 5 groups of Marshall test pieces under different health-preserving time (2, 6, 12, 20, 30 hours). The quality o...
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The invention relates to a method for determining secondary compaction time of a water-based polymer modified emulsified asphalt mixture. The method comprises the following steps: multiple groups of water-based polymer modified emulsified asphalt mixture marshall pieces are molded; multiple groups of water-based polymer modified emulsified asphalt mixture rutting plates are molded; the original mass of each marshall piece which is not demolded and the original mass of each rutting plate which is not demolded are weighed respectively; the marshell pieces and the rutting plates are put under a normal temperature condition to be cured; the moisture volatilization capacity and the stability of each marshell piece are tested in different curing time; the moisture volatilization capacity of each rutting plate is tested in different curing time, and each rutting plate is subjected to secondary wheel rolling; the rutting plates subjected to secondary wheel rolling are left to be cured and then demolded; the density of each rutting plate is tested; the optimal secondary wheel rolling time of each rutting plate is determined, and the secondary compaction time of the water-based polymer modified emulsified asphalt mixture is determined. With the adoption of the method, the secondary compaction time of the water-based polymer modified emulsified asphalt mixture can be found more accurately, and the water-based polymer modified emulsified asphalt mixture can reach the largest compaction degree.
Description
technical field [0001] The invention belongs to the technical field of building materials, and relates to a method for determining a secondary impact machine of a water-based polymer modified emulsified asphalt mixture. Background technique [0002] Water-based polymer modified emulsified asphalt mixture is a cold-mix asphalt mixture prepared from emulsified asphalt modified by water-based epoxy resin E51 and its amine curing agent. It needs secondary compaction during the forming and curing process. But the traditional time and temperature as the control index to determine the timing of the second strike is not very accurate, so it is necessary to invent a new method for determining the timing of the second strike. [0003] At present, people mainly carry out research on the performance of water-based epoxy resin emulsified asphalt and its mixture, and also research on the compaction and health preservation methods of water-based epoxy resin emulsified asphalt mixture. [...
Claims
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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 季节许鹰刘禄厚杨松
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE