How to use Urethane Grout properly to achieve the best results
Urethane Grout the use of similar, the correct use of methods, will produce the best results.
First, add water, for the second space of secondary infusion, can be directly added to the water slurry, the standard model of water for the Urethane Grout 13 ~ 15%. Aggregate, for the large space concrete hole infusion, you can add 5 ~ 10mm particle size of the stone, the ratio of stone: ugm = 0.3: 1 (special circumstances can be changed according to demand), add water for the Urethane Grout 20%.
Second, the watering method, continuous Urethane Grout, can not be interrupted and as short as possible Urethane Grout time. Urethane Grout process is strictly prohibited vibrating, if necessary, can be used to pull bamboo diversion. Infusion dense, slightly dry, the outer surface smoothing light.
Third, before the construction, should fill the space floating soil, loose clean up, remove the oil, fill the surface of the surface of the concrete need to use clean water pre-wet 6 to 12 hours.
Widely used in high-speed railway, metallurgy, petrochemical, power, coal, machinery, construction, light industry, marine, road and bridge, environmental protection, municipal and other areas of equipment installation, structural reinforcement, building maintenance and other major national projects.
What are the commonly used Urethane Grout methods for Urethane Grout? As the Urethane Grout has a strong liquidity, so for plugging, the effect is better. However, today's focus for everyone to introduce a number of Urethane Grout methods, we hope that after the use of Urethane Grout to help.
The first is the high funnel method, the high funnel method is the Urethane Grout construction, only the Urethane Grout fluidity can not meet the requirements, the use of Urethane Grout to improve the potential difference to meet the Urethane Grout requirements of the method. The method is suitable for large equipment base (side length of more than 3m) Urethane Grout. At this point, in the equipment base to arrange the appropriate vent, the hole diameter of not less than 30mm. This Urethane Grout method should also be used for equipment with trenches under the box base and base.
Another is the self-weight method, is in the construction of Urethane Grout, the use of its good mobility characteristics, in the range of free flow within the Urethane Grout to meet the Urethane Grout requirements of the method used in the lower surface of the equipment base of the second flat Urethane Grout equipment.
Finally, there is a method of pressure Urethane Grout method, the pressure Urethane Grout method is in the Urethane Grout construction, the use of Urethane Grout pressurization equipment to meet the Urethane Grout requirements of the method. The method is suitable for complex structure and anti-hit concrete Urethane Grout, this time to use Urethane Grout pressurization equipment.
Summer temperatures are high, and easy to wind, the air is dry, so the construction of Urethane Grout will have a certain impact. Therefore, in order to avoid the impact of these problems on the construction, the use of Urethane Grout in summer must pay attention to the following questions.
First of all, need to pay attention to the pouring, the template, steel, the second secondary Urethane Grout grass to sprinkle water, cooling, but also reasonable sub-stratification, so that the old and new pouring interval shorter. If a higher slump of concrete Urethane Grout mixture is required, a superplasticizer should be used and the slump of the mixture produced by some superplasticizers can be maintained for two hours.
Second, the need to control the delivery time, transport issues should be shortened to the external transport time, control the transport distance. After the Urethane Grout to the site should be immediately unloaded and poured material, to avoid the residence time is too long cause a greater loss of slump. When the internal conveyor is pumped, the conveyor pipe should cover the damp cloth.
Finally, the aggregate and mixing water should be avoided by direct sunlight, which can be sprinkled to cool the aggregate. Mixing water is best to use well water, such as with a storage tank, should avoid direct sunlight. Sprinkle water into the aggregate pile to reduce the temperature of the concrete Urethane Grout aggregate. Avoid the temperature of the Urethane Grout mixture above 30 ° C and, if necessary, add ice to reduce the temperature of the secondary polyurethane grout mixture.