There are three kinds of mixing methods for lime soil: artificial mixing, processing plant mixing, and construction site mixing, which are applicable to different construction conditions. Before the construction of the limestone base layer, the lime shall be digested and sifted. The lime may be sieved without sieving and the soil may be sieved. When mixing at the construction site (road mixing method), refer to the following methods: 1. Slurry: Use a tractor to pull the rake type, start from track 1 on the track and field track, go forward, and then turn it back, repeat, after the full runway mix, weigh with agriculture, then 3-4 times In the end, we changed the light trips to and from the bust twice, playing the role of loosening the earth and cutting the earth blocks, and checking the thickness of the turn. 2. Dry mix: Lay enough lime for the designed amount on the soil that has been crushed, and then use the heavy rake to turn and mix the mixture repeatedly. At the same time, use ploughing. Normally, it should be carried out 3 to 4 times until the mix is ​​uniform and the soil color is uniform. 3. Wet Mixing: After dry mixing, measure the on-site moisture content of lime soil mixture, supplement watering, require strict control, not too much or too little, wait a moment after spraying, so that lime soil surface has a dry skin , can be mixed, first with a plough to mix, and then re-mixing the contract when the lime soil mixture in the lime soil aggregate, and finally with a light pick and then rub 1 ~ 2 times, so that the surface is fine, uniform, smooth At this time, the height and slope can be detected by measuring methods. When factory mixing (plant mixing method): to design a pipeline, and then install the equipment, and to adjust the metering equipment, the metering equipment must be added to the water, if you add stabilizers, but also at the same time The equipment is installed, and a sampling switch device is installed at the total hopper so as to sample and test at any time. The feed rates of batch mixers and continuous mixers should not exceed the design capacity of the mixer. Always check the dead angle of the mixer, and take measures to clean up where there is a long period of inconsistent mixing. Artificial mixing legal: The soil and lime shall be sieved in advance, and the mass ratio shall be replaced with the volume ratio in the field. The volumetric mixing ratio may be used during construction. After the artificial mixing is uniform, it is necessary to use a large-diameter sieve sieve hole 5mm at the end. Sift it again and you can spread it. Artificial mixing is suitable for small-scale projects or places where mechanical mixing is not in place.
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