First, the preparatory work before construction First of all, to test the use of equipment and tools is complete, electrical equipment is safe, the mechanical part to be tested, do all the protection against electricity, fire prevention work. Do a good job of project distribution, implement the project division of labor to the people, divide the work well, explain the importance of each project, and the matters to be noted in production. The preparation work can be started.
Objective: To ensure that the entire construction process is under safe conditions, so that construction quality can be ensured, costs can be reduced as much as possible, and construction period can be shortened.
Second, technical preparations After receiving the construction plan, we must promptly organize technical personnel to be familiar with, grasp the contents of the drawings, and the relevant personnel of the construction unit shall carry out the review of the drawings and resolve related issues and measures in advance. Organize the construction technicians to make a good measurement of the actual site, determine the best construction plan, and determine the color effect map of the surface layer, and then arrange the process rationally. Present the specifications, quantity, quality requirements and approach time of the main materials. Prepare the corresponding material use plan. Reasonably deploy construction personnel and organize personnel to enter the market in a timely manner.
Third, pay attention to matters
1 Check the local weather forecast before construction and establish a suitable construction plan;
2 is to do base moisture testing, and the basic moisture content is less than 5% before construction;
3 Whether the foundation is cement or asphalt, test the wetted test paper with PH5-6 water first. If the PH value is between 6.8-7.8, it is a weak alkaline. Use 3% dilute hydrochloric acid or oxalic acid to scrub the site, such as PH value. In 7.8-10, the site is scrubbed with about 6% dilute hydrochloric acid or oxalic acid. PH value greater than 10 is not suitable for the construction of alkali. Otherwise, the surface will be delaminated due to alkali migration.
4 Optimum construction conditions: Temperatures between 10°C and 30°C (Note: Snow drifts in northern regions for years, and temperatures below 5°C are no longer suitable for construction! In the winter in the South and Central regions, the temperature will have a chance at 10 after noon during the day. Above °C, it can still be constructed!), the humidity is between 30%-85%;
5 cargo storage environment: It is recommended that the ventilation and dry indoor storage temperature between 10-30 °C;
Fourth, accessories instructions
1 is the amount of catalyst: the catalyst effectively controls the chemical reaction rate of the main material, and the temperature should be adjusted to the maximum in synchronization with the construction speed. For example, in the middle layer of a hybrid plastic runway, the material response speed is too late to be spread out. The reaction rate is slow. All the slurry flows down the bottom layer and wastes material. At the same time, the bottom layer loses its elasticity due to more filling material.
2 is the amount of diluent: The diluent effectively controls the viscosity of the main material. Adjust the amount of diluent according to the temperature. The volatilization rate of the diluent is determined by the temperature. The volatilization rate of the diluent directly affects the effect of the surface layer. This kind of correlation must be mastered in order to make a good plastic runway.
3 is the amount of closed primer: closed primer is used to deal with the concrete foundation. If the old concrete foundation is damaged, there are moss, kerfs, etc. The sand mill is used to lightly grind the site. In the site cleaning process can be used PH value test paper test, (attention temperature will affect the PH value) when the alkaline is high, it is recommended to use about 5% of dilute hydrochloric acid spill and wash the cement base surface and keep it dry, and then rinse with clean water (after cleaning The base surface has no floating ash). After washing, dusting and drying the site (moisture content should be less than 5%), use a high-speed mixing with a closed primer, carefully brush on the floor with a roller and carefully inspect, do not miss the brushing place, in the little dust The part is repeatedly scratched 2-3 times, to achieve the function of reinforced waterproof. After ensuring that the site is dry, use a closed primer to ensure the bonding of the base and pu polyurethane materials, and play a role in connection.
For example, the bottom of the mixed plastic runway construction: the use of two-component PU polyurethane runway primer, the ratio of A component and B component is 1:4, the content of reclaimed rubber particles <25%, thinner (3% of the bottom material -5 %, the lower the temperature on site, the more it is added), the driers (0.5%-2% of the bottom material, the lower the on-site temperature is, the more it is added). One is to test the site before the formal paving: clean and clean on the basis of delivery, check whether there is mechanical oil, draw 1x1 square meters of area on the site, pour the materials into the test shop, make the site temperature, humidity and Record the ground water content to ensure the material ratio and curing time. The second is based on the test paving record ratio, formally adjust the formula to paving materials.
The specific ratio of the paving should also pay attention to: 1 is to detect the thickness at any time; 2 is to adjust the proportion of the diluent according to the temperature change at any time, to prevent the slurry is too thin, the curing time is slow and the phenomenon of internal thin thickness caused by the flow of slope; 3 is As far as possible, the paving time is scheduled to be between noon and 3:00 pm. In the morning, the general temperature is below 10°C in the morning and the construction conditions cannot be met. The general temperature drop after 3 pm is not recommended to continue the construction.) Foaming occurs during the process and affects the quality.
The same surface layer construction formula is: using two-component polyurethane, the ratio of component A to component B is 1:2, and the amount of glue and EPDM particles per square is 1.2kg and 1.2kg, respectively. Glue, granules are mixed in proportion, thinner (3%-5% of base material, the lower the temperature on site is, the more it is added), driers (0.5%-2% of the base material, the lower the on-site temperature is, the more it is added) .
Objective: To ensure that the entire construction process is under safe conditions, so that construction quality can be ensured, costs can be reduced as much as possible, and construction period can be shortened.
Second, technical preparations After receiving the construction plan, we must promptly organize technical personnel to be familiar with, grasp the contents of the drawings, and the relevant personnel of the construction unit shall carry out the review of the drawings and resolve related issues and measures in advance. Organize the construction technicians to make a good measurement of the actual site, determine the best construction plan, and determine the color effect map of the surface layer, and then arrange the process rationally. Present the specifications, quantity, quality requirements and approach time of the main materials. Prepare the corresponding material use plan. Reasonably deploy construction personnel and organize personnel to enter the market in a timely manner.
Third, pay attention to matters
1 Check the local weather forecast before construction and establish a suitable construction plan;
2 is to do base moisture testing, and the basic moisture content is less than 5% before construction;
3 Whether the foundation is cement or asphalt, test the wetted test paper with PH5-6 water first. If the PH value is between 6.8-7.8, it is a weak alkaline. Use 3% dilute hydrochloric acid or oxalic acid to scrub the site, such as PH value. In 7.8-10, the site is scrubbed with about 6% dilute hydrochloric acid or oxalic acid. PH value greater than 10 is not suitable for the construction of alkali. Otherwise, the surface will be delaminated due to alkali migration.
4 Optimum construction conditions: Temperatures between 10°C and 30°C (Note: Snow drifts in northern regions for years, and temperatures below 5°C are no longer suitable for construction! In the winter in the South and Central regions, the temperature will have a chance at 10 after noon during the day. Above °C, it can still be constructed!), the humidity is between 30%-85%;
5 cargo storage environment: It is recommended that the ventilation and dry indoor storage temperature between 10-30 °C;
Fourth, accessories instructions
1 is the amount of catalyst: the catalyst effectively controls the chemical reaction rate of the main material, and the temperature should be adjusted to the maximum in synchronization with the construction speed. For example, in the middle layer of a hybrid plastic runway, the material response speed is too late to be spread out. The reaction rate is slow. All the slurry flows down the bottom layer and wastes material. At the same time, the bottom layer loses its elasticity due to more filling material.
2 is the amount of diluent: The diluent effectively controls the viscosity of the main material. Adjust the amount of diluent according to the temperature. The volatilization rate of the diluent is determined by the temperature. The volatilization rate of the diluent directly affects the effect of the surface layer. This kind of correlation must be mastered in order to make a good plastic runway.
3 is the amount of closed primer: closed primer is used to deal with the concrete foundation. If the old concrete foundation is damaged, there are moss, kerfs, etc. The sand mill is used to lightly grind the site. In the site cleaning process can be used PH value test paper test, (attention temperature will affect the PH value) when the alkaline is high, it is recommended to use about 5% of dilute hydrochloric acid spill and wash the cement base surface and keep it dry, and then rinse with clean water (after cleaning The base surface has no floating ash). After washing, dusting and drying the site (moisture content should be less than 5%), use a high-speed mixing with a closed primer, carefully brush on the floor with a roller and carefully inspect, do not miss the brushing place, in the little dust The part is repeatedly scratched 2-3 times, to achieve the function of reinforced waterproof. After ensuring that the site is dry, use a closed primer to ensure the bonding of the base and pu polyurethane materials, and play a role in connection.
For example, the bottom of the mixed plastic runway construction: the use of two-component PU polyurethane runway primer, the ratio of A component and B component is 1:4, the content of reclaimed rubber particles <25%, thinner (3% of the bottom material -5 %, the lower the temperature on site, the more it is added), the driers (0.5%-2% of the bottom material, the lower the on-site temperature is, the more it is added). One is to test the site before the formal paving: clean and clean on the basis of delivery, check whether there is mechanical oil, draw 1x1 square meters of area on the site, pour the materials into the test shop, make the site temperature, humidity and Record the ground water content to ensure the material ratio and curing time. The second is based on the test paving record ratio, formally adjust the formula to paving materials.
The specific ratio of the paving should also pay attention to: 1 is to detect the thickness at any time; 2 is to adjust the proportion of the diluent according to the temperature change at any time, to prevent the slurry is too thin, the curing time is slow and the phenomenon of internal thin thickness caused by the flow of slope; 3 is As far as possible, the paving time is scheduled to be between noon and 3:00 pm. In the morning, the general temperature is below 10°C in the morning and the construction conditions cannot be met. The general temperature drop after 3 pm is not recommended to continue the construction.) Foaming occurs during the process and affects the quality.
The same surface layer construction formula is: using two-component polyurethane, the ratio of component A to component B is 1:2, and the amount of glue and EPDM particles per square is 1.2kg and 1.2kg, respectively. Glue, granules are mixed in proportion, thinner (3%-5% of base material, the lower the temperature on site is, the more it is added), driers (0.5%-2% of the base material, the lower the on-site temperature is, the more it is added) .
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