2results about How to "Small expansion deformation" patented technology

The utility model discloses a combined expansive soil side slope seepage-proofing and damp-proofing structure which comprises a side slope body, a side slope surface is arranged on one side of the top end of the side slope body, a slope body outer drainage ditch is formed in the upper surface of the other end of the side slope body, a surface concrete slope protection layer is arranged on the side wall of the side slope body, and a slope body outer drainage ditch is formed in the side wall of the side slope body. The other side of the surface concrete slope protection layer is connected with an anti-seepage spraying layer, and the inner side of the anti-seepage spraying layer extends to form a slope body inner water seepage pipe. The structure is simple in arrangement and convenient to construct, the surface concrete slope protection layer can effectively improve the strength and smoothness of the slope body, the anti-seepage spraying layer can permeate into the concrete layer, a compact waterproof film is formed on the surface of the concrete layer, and the water seepage pipe is arranged in the slope body, so that water in the roadbed body can be effectively removed, the stability of the slope body is guaranteed, and expansion deformation of expansive soil is properly reduced; the structure is short in construction period, simple and convenient in construction process and good in construction effect, and can play roles in seepage prevention and moisture prevention.

The application provides a kind of improved sulphate saline soil road base road building material and preparation method, the improved sulphate saline soil road base road building material includes the following raw material components: by mass percentage, steel slag 1~3.45%, fly ash 1~3.45%, cement 0.55~1.77%, sodium hydroxide 0.54~1.7%, water 1.68~6.38% and sulphate saline soil 83.25~95.23%, the mass percentage of each component is 100%, and the preparation method includes: step 1, the formula amount of steel slag, fly ash, cement is dried and then ground and mixed, then mixed with the formula amount of water and stirred uniformly to prepare mixed liquor A; the formula amount of NaOH is prepared to obtain 10mol / L NaOH solution; step 2, mixed liquor A and the NaOH solution prepared in step 1 are mixed to prepare geopolymer; step 3, the geopolymer is mixed with the formula amount of sulphate saline soil to obtain the product. The improved material provided by the application has the characteristics of good low-temperature resistance, strong anti-freeze-thaw cycle ability, good impermeability, small expansion, good volume stability, and high mechanical properties of the reinforced soil body.