Parfect

Soil solidifying agent is widely applicable to soil particle size, and it is suitable for strengthening the surface and deep soil of various soil conditions. But the curing effect can only be achieved by choosing suitable curing agent for different soil quality. Therefore, it is necessary to make full investigation and test for the soil and its changes in advance. The construction of solidified soil in subgrade and foundation should focus on the following work: 1.Test test of solidified soil of subgrade and foundation. The test of solidified soil raw material and solidified soil mixture should be done according to the regulations, and the laboratory test report of indoor solidified soil mixture should be provided by laboratories with corresponding qualification. 2.The construction technician should know the main technical properties and curing mechanism of the soil solidifying agent, understand the performance and method of operation, according to the key points of site construction an

As the most potential subdivision area of environmental protection industry, the soil remediation industry has a certain dependence on the policy. For more than a year, Chinese soil remediation industry has become a hot “new darling” under the support of national policy. According to the “Chinese soil remediation industry market outlook and investment strategy planning analysis report” data show that soil remediation industry will be “the biggest environmental protection industry segments in 13th Five-Year period, market capacity up to 4 trillion and 600 billion yuan. The soil remediation industry will continue to expand as the follow-up policy continues to be added. In May 2016, the government launched the soil pollution control market, and put forward the target for the safe utilization rate of contaminated land and cultivated land. In June 2017, the soil pollution prevention law (Draft) was submitted to the Standing Committee of the people’s Congress for the first time, and the p

The foundation treatment generally refers to the engineering measures used to improve the bearing capacity of the foundation supporting the building, improve its deformation performance or impermeability. The problems faced by the foundation are mainly in the following aspects: a.Bearing capacity and stability problems. b.The problem of compression and uneven settlement. c.Leakage. d.Liquefaction. e.Special problems of special soil. When the natural foundation exists one or several of the above five kinds of problems, the foundation treatment measures should be adopted in order to ensure the safety and normal use of the superstructure. Through the foundation treatment, we can achieve the following purposes. 1.Improve the bearing capacity of foundation soil The concrete manifestation of the foundation shear failure is that the bearing capacity of the building is not enough, and the structure is unstable because of the eccentric load or the lateral earth pressure; Due to the load of fill

Soil leaching means that the solid phase heavy metals in the soil can be transferred to the liquid phase by extractant. The soil containing extractant can be reused after washing with water, then the waste liquid containing heavy metals will be further processed. The key to the  remediation of soil  leaching is to find a kind of economical and practical leaching agent, which can effectively remove all kinds of pollutants. It will not destroy the basic physical and chemical properties of the soil and do not cause second pollution. In general, the leaching agent can be divided into inorganic leaching agent, sting agent, surface active agent, compound leaching agent and oxidizing agent. In the actual treatment of contaminated soil, the factors affecting soil leaching and  soil remediation technology  mainly include soil properties, pollutant properties and process operation conditions. For example, the soil properties that affect the leaching effect are mainly grain distribution, tex