Special soil admixture for rammed earth and using method thereof

Abstract

The invention discloses a special soil admixture for rammed earth and a using method thereof. The special soil admixture for rammed earth is prepared from the following raw materials in parts by mass:20-30 parts of flyash or crushed building waste, 15-30 parts of calcium hydroxide, 15-30 parts of industrial starch, 5-15 parts of sodium silicate powder, 5-10 parts of calcium sulfate, 2-7 parts ofdispersible latex powder, 4-8 parts of hydroxypropyl methyl cellulose, 1-2 parts of lithium hydroxide and 3-5 parts of polypropylene fiber. The using method of the special soil admixture for rammed earth comprises the following steps: uniformly mixing and stirring the raw materials in parts by mass to prepare the special soil admixture for rammed earth, then mixing soil with the special soil admixture for rammed earth according to a mass ratio of 100 to (10-20), then adding water and uniformly mixing to obtain a mixture. Through a series of chemical reactions and physical actions, the compaction degree of the soil is improved; meanwhile, the properties such as compressive strength, water resistance and weather resistance and the like are also greatly improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a special soil admixture for rammed earth and its application method. Background technique [0002] Soil solidification admixture is a physical and chemical treatment of soil with external admixtures. At room temperature, it can directly cement soil particles or react with clay minerals to change soil compaction and soil engineering properties. At the same time, large-scale road rollers and other compaction equipment are used. , through physical external force to reduce the gap between soil particles, so as to achieve the purpose of improving soil strength and compressive strength. It is generally used in road foundation construction and foundation reinforcement. At present, there is no soil curing admixture specifically for rammed earth buildings. [0003] The rammed earth construction technology has a long history, but due to the different liquid limit and plasticit...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a special soil admixture for rammed earth and its application method to overcome the conditions of rammed earth building construction in mountainous areas (or other unqualified places) that do not have crushing, drying, stirring and compacting The problem is that the factory provides improved plain soil to solve the shortcomings of the traditional rammed earth process such as low strength, low water resistance and weather resistance, and short service life of the building. It can also be formulated into different colors according to user requirements.