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发明公开
CN104961393A 用于公路台背回填的石英砂矿渣泡沫轻质土填充材料 无效 - 撤回

用于公路台背回填的石英砂矿渣泡沫轻质土填充材料
摘要：
本发明是一种用于公路台背回填的石英砂矿渣泡沫轻质土填充材料，以工业尾料-石英砂矿渣、水泥、发泡剂等为原料，通过控制各组成材料的比例，制成泡沫轻质土。其中，水的掺量为25％-50％，水泥的掺量为20％-40％，石英砂矿渣的掺量为25％-50％。本发明用于台背回填，可大大缓解桥(涵)与路基间差异沉降的变化梯度，使桥基间差异沉降的变化缓慢化、均匀化，从根本上消除高速公路中的桥(涵)与路基间的跳车问题。而且该泡沫轻质土产生的侧向土压力小，不会使桥(涵)发生偏移，间接对桥(涵)起到一定程度的保护作用。
摘要（英）：

The invention relates to a quartz sand slag foamed light soil filling material for highway abutment backfill. The industrial tailings quartz sand slag, cement, a foaming agent and the like are adopted as the raw materials, and by controlling the proportion of all the component materials, the foamed light soil can be obtained. Specifically, the content of water is 25%-50%, the content of cement is 20%-40%, and the content of quartz sand slag is 25%-50%. The filling material provided by the invention is used for backfill, can greatly ease the variation gradient of differential settlement between a bridge (culvert) and a roadbed, so that the variation of differential settlement between the bridge and roadbed becomes slow and uniform, and the vehicle bump problem between the bridge (culvert) and the roadbed in expressway can be fundamentally eliminated. Also, the foamed light soil generates small soil lateral pressure which cannot make the bridge (culvert) deviate, thus playing certain protection role to the bridge (culvert) indirectly.

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