Year1
- 品名：
- 支座砂浆
- 规格：
- 25kg/袋
- 品牌：
- 恒众鑫
Bridge bearing mortar
1. Product introduction
Bridge bearing mortar is an industry-leading product. It is characterized by high strength in reasonable grades. Aggregate is used as aggregate, high-strength cement is used as binder, polymer is used as toughening agent, supplemented by high fluidity, micro-expansion, anti-segregation, anti-cracking and other admixtures and admixtures, which are professionally produced with precise proportions. Mix.
Bridge bearing mortar is a high-quality cement-based composite material used for the installation of railway bridge bearings. Due to the use of a variety of high-performance additives, the finished surface is particularly smooth and flat. It overcomes the shortcomings of traditional mortar such as unevenness, cracking, and peeling, and has the characteristics of self-leveling, high early strength, high strength, no shrinkage, high wear resistance, and convenient construction.
Its performance indicators comply with national and railway industry standard technical requirements such as the "Details for the Implementation of High-Performance Concrete on the Beijing-Shanghai High-Speed Railway" and the "Interim Technical Conditions for Pot-type Rubber Bearings for Passenger Dedicated Line Bridges".
At present, various types of products such as prefabricated beams, cast-in-place beams, and extra-large bridges (types) have been formed, and construction techniques and construction auxiliary equipment under the conditions of -℃~-℃ in winter have been formed. Suitable for users to carry out construction under all-weather conditions.
2. Main features
It has excellent fluidity and self-flowing leveling without vibrating and troweling. The construction is fast and convenient.
, has very high hourly strength, high late strength and no shrinkage. According to different construction temperatures, high compressive strength and high flexural strength can be obtained.
, has micro-expansion properties and excellent anti-cracking properties.
, adaptable to a wide temperature range, can be constructed under -℃~-℃ conditions without any auxiliary insulation or cooling measures. It can simultaneously ensure the needs of strength development and construction fluidity under high or low temperature conditions.
, suitable for emergency repair, track filling, bearing grouting, especially suitable for high-speed railway bridge bearings or track filling, etc. It can also be used for local leveling of concrete beams or repair of concrete piers.
, Comply with the requirements of "Provisional Technical Conditions for Concrete Precast Beams for Passenger Dedicated Lines" and "Interim Technical Conditions for Basin Rubber Bearings for Bridges on Passenger Dedicated Lines"
Bleeding rate: The bleeding rate is zero.
Condensation time: greater than minutes and less than hours
Strength
3. Construction method
Clean the base layer to remove floating ash, oil stains and other substances that are not conducive to bonding. Before construction, the base layer should be moistened with tap water and no open water should be left when pouring the mortar.
Calculate the amount of powder and water consumption based on the construction area and construction area per unit time to ensure that all construction is completed before the mortar loses leveling properties.
. Add water into the mixing barrel and then gradually add the weighed self-leveling material and stir at the same time until all the required materials are added, then continue stirring for - 1 minute to make the slurry uniform and static for about 1 minute.
, evenly mix the mixed and filtered materials to the treated ground to self-level. It is best to complete the leveling construction time within 10 minutes and rinse the equipment with water immediately after the construction.
When mixing powder, it is best to use an electric mixing gun for mixing. It is better to use a mortar mixer for large-scale construction.
For details, please refer to the construction technology and winter construction technology provided by our company.
4. Shelf life: unopened months
Packing: /bag
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