Hydrophobic anti-scouring loess solidifying agent

Abstract

The invention relates to a hydrophobic anti-scouring loess stabilizing agent. The hydrophobic anti-scouring loess stabilizing agent is composed of a powdery stabilizing component and a liquid waterproof component, wherein the powdery stabilizing component is composed of 50-70 parts of slag powder, 15-25 parts of cement, 5-25 parts of fly ash, 1-3 parts of synthetic fibers, 1-5 parts of calcium sulfate, 1-5 parts of calcium hydroxide and 1-2 parts of calcium chloride; and the liquid waterproof composition comprises the following components in parts by weight: 2-50 parts of a water repellent agent, 1-20 parts of an interface agent, 1-15 parts of a stabilizer and 20-90 parts of water. The unconfined compressive strength of a soil body solidified by the hydrophobic anti-scouring loess solidifying agent can reach 5 MPa or above, the toughness and crack resistance of the solidified soil body are improved through the fibers, and a high-strength high-toughness solidified soil material is formed. By adopting the prepared liquid waterproof component, the soil body has hydrophobicity, a large amount of external moisture can be effectively prevented from permeating, and the collapsibility of loess is reduced. Meanwhile, the anti-scouring performance of a loess sample doped with the solidifying agent is also enhanced.

Description

technical field [0001] The invention relates to a hydrophobic type anti-scouring curing agent, in particular to a hydrophobic type anti-scouring curing agent used in the Loess Plateau area. Background technique [0002] Check dams refer to dam structures built for the purpose of retaining mud and silt in ditches at all levels in water and soil erosion areas, and the land formed by the mud retaining is called dam land. Building multiple check dams in one ditch is an important and unique ditch control engineering system in the severe soil erosion areas of the Loess Plateau in China. The main purposes are flood detention, mud retention, silting, water storage, construction of farmland, development of agricultural production, and reduction of sediment in the Yellow River. The check dam is an effective channel control project summed up by the masses of the people in the Loess Plateau in the long-term struggle against soil erosion. The artificial barrier of the channel plays the...

AI Technical Summary

Problems solved by technology

Due to the large number of check dams and scattered layout, the management and protection tasks are huge, and the flood control standards of check dams are low. The excessive flood caused by the dam failure will pose a threat to the downstream check dam, thus forming a chain reaction

In recent years, with the impact of global climate change, the possibility of regional high-intensity rainstorms and extreme rainstorms in the Yellow River Basin has increased. The floods caused by continuous heavy rainfall have caused the dam to be submerged for a long time, and relatively high water levels have caused dam failure. Increased chance

Loess has typical collapsible characteristics, and under soaking conditions, obvious strength reduction and deformation increase will occur, which not only leads to severe flood control safety of check dams, but also hinders the safe operation of check dams

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