ABSTRACT

Dust from construction field is one of sources for the atmosphere particulate pollution. In this study, a solidifying material, modified polyvinyl alcohol (MPA), is used to control the dust from soil. The controlling efficiency of the MPA is evaluated based on its anti-wind and anti-rain erosion performance under different conditions such as soil types, spraying amount of MPA, slope morphologies (gradients and unevenness), and treated time. Results indicate that the MPA can bind well with the soil particles and it is able to strengthen the integrity of the surface. Soil treated with MPA exhibits good anti-wind effects, and PM₁₀ and PM_2.5 in environment do not increase even under a nine-grade wind erosion. Soil treated with MPA can maintain the surface integrity under a rainstorm, and there are no erosion traces and mud after rain erosion. The application of MPA has no limitation in terms of soil type, soil slope, and surface morphology, and thus, it has a wide applied prospect in engineering.

Implications: In order to solve the air pollution problems existing on construction sites in densely populated areas, MPA optimizes a kind of environmental agent to treat, which does not affect the later use of soil. The applicability effect was verified from the perspective of anti-wind and anti-rain erosion doubly. Research results not only can provide data support for the construction management, but also help to promote the civilization and ecological benefit of construction.

摘要

建筑工地扬尘是大气颗粒物污染的来源之一。在这项研究中，一种固化材料，改性聚乙烯醇 (MPA)，用于控制土壤中的灰尘。MPA的防治效果是根据其在土壤类型、MPA喷洒量、坡度形态（坡度和不平整度）、处理时间等不同条件下的抗风蚀和抗雨蚀性能来评价的。结果表明，MPA 可以很好地与土壤颗粒结合，并能够加强表面的完整性。经 MPA 处理的土壤具有良好的抗风效果，PM ₁₀和 PM _2.5即使在九级风蚀下，环境也不会增加。MPA处理的土壤在暴雨下能保持地表完整性，雨蚀后无侵蚀痕迹和泥土。MPA的应用不受土壤类型、土壤坡度和地表形态的限制，在工程中具有广阔的应用前景。

启示：为了解决人口密集地区建筑工地存在的空气污染问题，MPA优化了一种环保药剂处理，不影响土壤后期利用。从抗风蚀和抗雨蚀的角度双重验证了适用性效果。研究成果不仅可以为建设管理提供数据支持，而且有助于促进建设的文明和生态效益。