【 Baotou EPS Component], Expanded Polystyrene EPS ）It is a light polymer. The polystyrene resin is added into the foaming agent, and at the same time, it is heated and softened to generate gas to form a foam material with a hard closed structure.
[Application field of Baotou EPS components]. To reduce the uneven settlement of the upper soil and the soil on both sides of the rigid structure under the shadow embankment of underground or adjacent buildings, the top of the structure will often generate excessive additional pressure. The vertical earth pressure coefficient can reach 1.2, and the fill height can reach 2.0. That is, the stress concentration on the top of the structure will lead to cracking and destruction of the underground structure. Replacing EPS material with filling soil for top paving can effectively improve the stress distribution on the structure and reduce the earth pressure coefficient to 0.3.
In the application field of EPS components, erect embankments can be built in mountainous areas with steep slopes. When building urban roads, EPS can be used for its independence and small lateral deformation to reduce occupation and increase aesthetics. In the expansion of expressway projects, EPS can not only reduce the uneven settlement caused by the new and old road joints, but also reduce the gradient, and even form a vertical gradient, which is very beneficial to reduce secondary land acquisition and save valuable land resources.
[Application field of Baotou EPS components] Because the bubbles on the inner wall of EPS materials are closed and disconnected, the water absorption rate is low, and the freezing thawing resistance is strong, it can ensure that there is still a good heat insulation effect in water. The EPS insulation subgrade test (1990) conducted on the Kunlun Mountain mountain crossing section of Qinghai Tibet Expressway shows that the 6cm thick EPS insulation layer can reduce the heat flow from the surface to the deep, reduce the upper limit of the underground permafrost layer, slow down the freezing and thawing process of permafrost, maintain the stability of the line structure and reduce deformation. This research result has been popularized and applied in Chuma River Approach, Hongliang River Bridge Approach, Laoquan District and other sections. According to the current situation of the project, the pavement is solid and smooth, the subgrade is stable, and the overall strength of the subgrade and pavement meets the design requirements.
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