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                  地暖回填使用豆石施工需要注意的问题

                  来源:http://www.takhleek.com/ 发布时间:2022/03/28

                  地暖回填豆石施工注意事项:
                  Precautions for construction of pea stone backfilling for floor heating:
                  1. 严格控制水灰比
                  1. Strictly control the water cement ratio
                  水灰比的大小直接决定砂浆强度。水灰比过大,地面强度就低,地表面粗糙,不耐磨,容易起砂,多余的游离水分蒸发,只是水泥浆面层出现细毛孔,降低了砂浆的密实性,容易磨损起砂。尽可能使用普通硅酸盐水泥(强度等级不小于42.5MPA)。
                  The water cement ratio directly determines the strength of mortar. If the water cement ratio is too large, the ground strength is low, the ground surface is rough, not wear-resistant, easy to sand, and the excess free water evaporates. Only fine pores appear in the cement slurry surface, which reduces the compactness of the mortar and is easy to wear and sand. Ordinary portland cement (strength grade not less than 42.5mpa) shall be used as far as possible.
                  普通硅酸盐水泥与矿渣水泥、火山灰质水泥相比,具有保水性较好,干缩性小,早期强度高等优点,对确保地面质量和施工进度均有利。采用普通硅酸盐水泥是保证砂浆强度,防止楼地面起砂所需要的前提。
                  Compared with slag cement and pozzolanic cement, ordinary portland cement has the advantages of good water retention, low dry shrinkage and high early strength, which is beneficial to ensure the ground quality and construction progress. The use of ordinary portland cement is the premise to ensure the strength of mortar and prevent sanding on the floor.
                  2. 禁止使用过期水泥和受潮水泥
                  2. It is forbidden to use expired cement and damp cement
                  水泥存放期超过三个月者称为过期水泥,过期水泥用于地面面层时,其强度、硬度及耐磨性能都会显着下降,导致起砂。受潮水泥是水泥与水发生作用凝结成块,胶结性能差,与过期水泥相比,质量更劣,所以不能用在地面面层上。
                  The cement stored for more than three months is called expired cement. When the expired cement is used for the ground surface, its strength, hardness and wear resistance will decrease significantly, resulting in sand. Damp cement is that cement and water react and coagulate into blocks, with poor cementation performance. Compared with expired cement, the quality is worse, so it can not be used on the ground surface.
                  地暖回填豆石
                  Pea stone backfilling for floor heating
                  地暖回填豆石施工
                  Construction of pea stone backfilling for floor heating
                  3. 地面面层砂浆不要用细砂
                  3. Do not use fine sand for ground surface mortar
                  地面要承受各种压力、摩擦、撞击,一定是具有一定的强度和耐磨性能。粗砂、中砂无论在强度上还是在耐磨上都胜过细砂。细砂拌制的砂浆干缩性大,易开裂。保水性也差,不利于压光。砂子的含泥量不要大于3%,否则会降低砂浆强度,导致楼地面起砂。
                  The ground must bear all kinds of pressure, friction and impact, and must have certain strength and wear resistance. Coarse sand and medium sand are better than fine sand in strength and wear resistance. The mortar mixed with fine sand has large dry shrinkage and is easy to crack. Water retention is also poor, which is not conducive to calendering. The mud content of sand shall not be greater than 3%, otherwise the mortar strength will be reduced, resulting in sand on the floor.
                  4. 掌握好压光时间
                  4. Master the calendering time
                  压光工作要控制在终凝前完成。压光过早,表面会游浮一层水,必然影响砂浆强度;压光时间过迟,会扰动或损伤水泥凝胶体的凝结结构,影响砂浆强度的增长,表面的毛细孔也难解决,也会导致起砂现象。
                  Calendering shall be completed before final setting. If calendering is too early, a layer of water will float on the surface, which will inevitably affect the strength of mortar; Too late the pressing time will disturb or damage the coagulation structure of cement gel, affect the growth of mortar strength, and the pores of the surface are also difficult to solve, which will also cause sand production.
                  5. 要有足够的养护时间
                  5. There should be enough maintenance time
                  养护的好坏对地面质量的优劣关系较大。一般养护时间要大于7天;养护时间不够,若在干燥空气中,水分不断蒸发,就会减缓甚至停止硬化,面层砂浆就无法达到设计强度,起砂也就在所难免。同理,在强度较低时过早使用,势必中断养护,影响强度增长,面层会遭损伤。
                  The quality of maintenance has a great relationship with the quality of the ground. Generally, the curing time shall be more than 7 days; The curing time is not enough. If the water evaporates continuously in the dry air, the hardening will slow down or even stop, the surface mortar will not reach the design strength, and sanding is inevitable. Similarly, if it is used too early when the strength is low, it is bound to interrupt the maintenance, affect the strength growth, and the surface course will be damaged.
                  以上就是为大家介绍的有关济南地暖的详细介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务http://www.takhleek.com
                  The above is the detailed introduction of Jinan floor heating. I hope it will help you If you have any questions, please contact us We will provide you with professional service http://www.takhleek.com
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