The use of silica mortar means that the silica mortar is beneficial to ensure the working performance of the masonry quality during the masonry process. If it has good fluidity, plasticity, certain water retention performance, it can maintain a uniform state without segregation and sedimentation, and it is suitable for masonry. The consistency and viscosity are not dried during the bricking time to achieve the required thickness of the brick joint, and the mortar in the brick joint is full.
1, on-site storage of materials and equipment preparation
1) transport silica mortar to the construction site, open stacking is prohibited. There must be rain and moisture protection measures After dry-mixed materials is transported to the construction site.. The materials should be used as soon as possible once package opened. Material should be used within 6 hours in winter and within 4 hours in Summer. Do not use the material once Drizzled or wet.
2) The protective measures must be taken during the construction process. and the
agitation ratio should be used to accurately weigh and add water in the material.
2, material preparation on site
1) Mixing ratio: silica mortar, using drinking standard clean water 30% or adjusting the ambient temperature at the construction site to facilitate the construction. Add 8% ratio concentrated sulfuric acid. The person in charge will be responsible for the supervision of the entire process of material proportioning, metering, and stirring, and make a record of each ratio.
2) Mixture
① Clean the mixer before mixing and make sure the machine is cleaned.
② First, the silica mortar is mixed with 30% water and 8% concentrated sulfuric acid into blender, mix for about 2-3 minutes, and observe the mixing condition, according to the dry humidity, grasp the remaining of the amount of water added. After the mixing of the silica mortar, the state of the material is uniform, the moisture is uniform, with liquidity, the viscosity is obviously high and the adhesion is strong. In order to facilitate on-site smear construction.③ It will be best to use the mixed material within 30-35 minutes if the working ambient temperature is higher than 25°C, the material will become waste material after 60 minutes.
3, material construction technical requirements
1)Dust treatment on the construction site, the surface of the construction site shall be free of dirt, dust and other sundries.
2) The construction should be protected by labor protection. It must require industrial smear gloves to be applied. The thickness is determined according to the requirements.
However, the thickness must be required for one application to avoid secondary application after the material is cured. During construction, the material shall be kneaded into a group and the construction shall be carried out from the bottom up.The construction shall be carried out continuously. If the construction is interrupted, the dewatering layer of the applied silica mortar shall be dewatered, roughened and cleaned before continuing construction. After construction, the light silica brick issmooth and smooth with a trowel, and the surface should not show steps or hemp surfaces.
4, the maintenance of silica mortar
During the construction period, the vibration of the construction body should beavoided as much as possible. After the work surface of the lining body is finished, the natural conservation is performed. The curing temperature is 15 to 35°C, and the dry environment (air relative humidity is not more than 70%), the natural curing period.For 5-7 days.
