Side slope grouting slurry for silty-fine sand embankment widening and method for preparing same

Abstract

The invention discloses side slope grouting slurry for silty-fine sand embankment widening, prepared from the following raw material in parts by weight: 3-15 parts of water glass, 2-10 parts of acetic acid, 1-5 parts of calcium chloride, 0.2-3 parts of disodium hydrogen phosphate, 0.1-5 parts of ferric trichloride, 0.1-5 parts of aluminum chloride, and 0.1-3 parts of phosphoric acid or sulfuric acid. The side slope grouting slurry for silty-fine sand embankment widening has the advantages as follows: (1) the slurry provided by the invention is good in permeability, large in dispersion radius after grouting, high in grouting reinforcement strength and good in homogeneity, and the gelation time of the slurry in the air and the sand layer is long; (2) the rest materials of the raw materials apart from the acetic acid which is an organic matter are all inorganic matters, and all of the raw materials do not belong to the range of hazardous article control, and may not cause pollution on the surrounding environment in the use process; the by-products of the slurry after solidification reaction also has no pollution on the environment, and is environment-friendly and harmless; and (3) the raw materials are low in price and wide in source.

Description

technical field [0001] The invention relates to a side slope grouting slurry for widening fine sand embankments and a preparation method thereof, which is suitable for the technical field of widening fine sand embankments. Background technique [0002] With the development of social economy and the increase of highway traffic flow, highway widening and expansion has become one of the important directions of modern transportation development. In road expansion, it is often encountered that the silty sand subgrade surrounded by cohesive soil on both sides is widened. In order to ensure that the subgrade and pavement have good engineering characteristics after widening, the method of excavating the steps after clearing the cohesive soil on the old road side slope is generally adopted. Make the old and new subgrades effectively connected. However, due to the small cohesive force of silt and fine sand, the steps after excavation cannot stand on their own and are easy to collapse...

AI Technical Summary

Problems solved by technology

The strength of reinforcement is relatively high, but the cost of raw materials is also high. In actual use, it has adverse effects on the environment and is only used in some special places.