Engineering road repair grade 2 lime
I. Introduction. With the acceleration of urbanization, transportation construction plays an increasingly important role in urban development. As one of the important materials for transportation construction, lime plays an irreplaceable role in engineering road construction. This article will introduce in detail the application and importance of secondary lime in engineering road construction.
Second, the characteristics of secondary lime.
Secondary lime is an important building material with many excellent characteristics. First of all, it has high compressive strength and flexural strength, which can withstand heavy loads and high-speed vehicles. Secondly, it has good cementing performance and is not easy to loosen, which can ensure the flatness and service life of the road surface. In addition, the secondary lime also has a low water absorption rate and good waterproof performance, which can effectively prevent water penetration and protect the roadbed from damage.
Third, the application of secondary lime in engineering road construction.
In engineering road construction, secondary lime is mainly used in the following aspects:
1.Base treatment: In road construction, base treatment is a very important part. The secondary lime has good cementation performance and high compressive strength, which can effectively improve the bearing capacity and stability of the base layer. At the same time, it also has good moisture-proof and waterproof performance, which can effectively protect the roadbed from damage.
2.Pavement paving: In pavement paving, secondary lime can be mixed with gravel, sand and other materials to make cement concrete pavement. This kind of pavement has the advantages of high strength, good durability and high flatness, which can meet the needs of urban traffic.
3.Asphalt pavement additives: In asphalt pavement paving, secondary lime can be used as an additive. It can improve the adhesion and adhesion of asphalt, enhance the slip resistance and durability of the pavement. At the same time, it can also effectively prevent problems such as cracks and ruts on the road surface.
Fourth, the application of secondary lime in engineering road construction precautions.
When applying secondary lime in engineering road construction, the following points need to be noted:
1.Select secondary lime that meets the standard: When selecting secondary lime, it is necessary to ensure that its indicators meet the national standards. For example, compressive strength, flexural strength, water absorption and other indicators should meet the requirements of the specification.
2.Pay attention to storage and use: When storing and using secondary lime, pay attention to waterproof, moisture-proof, weatherproof and other issues. Prolonged exposure to air will cause lime failure and affect the use effect.
3.Strengthen quality control: In the construction process, quality control should be strengthened to ensure that the quality of each link meets the requirements. Especially in the stage of base treatment and road paving, it is necessary to ensure that the base layer is smooth, compact, and free of cracks.
4.Pay attention to environmental protection: Pay attention to environmental protection issues during the construction process. Lime will produce a lot of dust and exhaust gas to pollute the environment during use, so it is necessary to take effective environmental protection measures at the construction site. For example, measures such as using bagged lime and strengthening ventilation have been used to reduce environmental pollution problems.
V. Conclusions. To sum up, secondary lime has a very important role and application value in engineering road construction. It has the advantages of high strength, good compaction performance and strong waterproof performance, and is suitable for various occasions such as base treatment, pavement paving and asphalt pavement additives. However, in the process of use, it is necessary to pay attention to the selection of lime that meets the standards, storage and use, as well as the strengthening of quality control and environmental protection, so as to better exert its excellent performance and achieve better use effect and win-win results of economic and social benefits.