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抹了石灰砂浆后就不能抹水泥砂浆的原因

来源:https://www.jnfhjc.com 日期:2022-03-10 发布人:juyehe

水泥是水硬性材料,石灰膏是汽硬性材料, 潮湿环境中,不得使用气硬性材料。

Cement is a hydraulic material and lime paste is a steam hard material. Pneumatic materials shall not be used in humid environment.
石灰砂浆中凝结材料是石灰膏,石灰膏的主要化学成分是氢氧化钙。石灰砂浆之所以能结硬,是氢氧化钙吸收了空气中的二氧化碳,生成碳酸钙及水,碳酸钙是有一定强度和硬度的,并且能与砂粘在一起,使石灰砂浆层结硬,由于空气中二氧化碳含量少,这种化学反应进行缓慢,而且生成的水又要蒸发掉。因此,石灰砂浆结硬是需要很长时间。
The setting material in lime mortar is lime paste, and the main chemical component of lime paste is calcium hydroxide. The reason why lime mortar can harden is that calcium hydroxide absorbs carbon dioxide in the air and generates calcium carbonate and water. Calcium carbonate has certain strength and hardness, and can stick with sand to harden the lime mortar layer. Due to the low content of carbon dioxide in the air, this chemical reaction is slow, and the generated water has to evaporate. Therefore, the hardening of lime mortar takes a long time.
如果在石灰砂浆结硬过程中抹上水泥砂浆,水泥砂浆中由于水泥水化作用快,使水泥砂浆很快就硬化,硬化了的水泥砂浆等于在石灰砂浆面上加了层隔膜,把石灰砂浆层封闭起来,使石灰膏不能吸收空气中二氧化碳,而且生成的水分也无法蒸发,这样石灰砂浆始终不能结硬,也不能与物面很好地粘结,两者之间的粘结力很小。抹上了水泥砂浆又增加了抹灰层自重,往往抹灰层自重超过粘结力,水泥砂浆抹灰层连同石灰砂浆抹灰层会一起掸落下来。即使是平面抹灰,石灰砂浆层的强度比水泥砂浆强度低,石灰砂浆又未能结硬,硬的水泥砂浆层抹在软的石灰砂浆层上,只要一受外力,水泥砂浆层就会产生破裂现象。
If cement mortar is applied during the hardening process of lime mortar, the cement mortar will harden quickly due to the rapid hydration of cement in the cement mortar. The hardened cement mortar is equivalent to adding a layer of diaphragm on the lime mortar surface to seal the lime mortar layer, so that the lime paste can not absorb carbon dioxide in the air, and the generated water can not evaporate, In this way, the lime mortar can not harden or bond well with the surface, and the bonding force between the two is very small. The plastering of cement mortar increases the self weight of the plastering layer. Often, the self weight of the plastering layer exceeds the bonding force, and the cement mortar plastering layer and lime mortar plastering layer will be dusted down together. Even for plane plastering, the strength of lime mortar layer is lower than that of cement mortar, and the lime mortar fails to harden. When the hard cement mortar layer is plastered on the soft lime mortar layer, the cement mortar layer will crack as long as it is subjected to external force.
而且两者都比较容易脱落。水泥砂浆在天气潮湿时,水分凝结在表面,石灰膏的水凝聚在内部,两者结合容易脱层,因此石灰膏下的基层,均采用水泥石灰砂浆。材料的干缩率不同。 石灰砂浆吸水,会影响水泥砂浆的强度。石灰中未完全水化的生灰会会顶裂抹灰面。石灰砂浆时间长了有析出碳酸钙的可能。这样就会分层了。
And both are easier to fall off. When the cement mortar is wet, the water condenses on the surface and the water of the lime paste condenses inside. The combination of the two is easy to delamination. Therefore, the base course under the lime paste adopts cement lime mortar. The dry shrinkage of materials is different. Lime mortar absorbs water, which will affect the strength of cement mortar. The incomplete hydrated quicklime in lime will crack the plastered surface. Lime mortar may precipitate calcium carbonate after a long time. This will layer.
以上就是为大家介绍的有关济南抹面砂浆的详细介绍,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,为您提供服务水泥是水硬性材料,石灰膏是汽硬性材料, 潮湿环境中,不得使用气硬性材料。
Cement is a hydraulic material and lime paste is a steam hard material. Pneumatic materials shall not be used in humid environment.
石灰砂浆中凝结材料是石灰膏,石灰膏的主要化学成分是氢氧化钙。石灰砂浆之所以能结硬,是氢氧化钙吸收了空气中的二氧化碳,生成碳酸钙及水,碳酸钙是有一定强度和硬度的,并且能与砂粘在一起,使石灰砂浆层结硬,由于空气中二氧化碳含量少,这种化学反应进行缓慢,而且生成的水又要蒸发掉。因此,石灰砂浆结硬是需要很长时间。
The setting material in lime mortar is lime paste, and the main chemical component of lime paste is calcium hydroxide. The reason why lime mortar can harden is that calcium hydroxide absorbs carbon dioxide in the air and generates calcium carbonate and water. Calcium carbonate has certain strength and hardness, and can stick with sand to harden the lime mortar layer. Due to the low content of carbon dioxide in the air, this chemical reaction is slow, and the generated water has to evaporate. Therefore, the hardening of lime mortar takes a long time.
如果在石灰砂浆结硬过程中抹上水泥砂浆,水泥砂浆中由于水泥水化作用快,使水泥砂浆很快就硬化,硬化了的水泥砂浆等于在石灰砂浆面上加了层隔膜,把石灰砂浆层封闭起来,使石灰膏不能吸收空气中二氧化碳,而且生成的水分也无法蒸发,这样石灰砂浆始终不能结硬,也不能与物面很好地粘结,两者之间的粘结力很小。抹上了水泥砂浆又增加了抹灰层自重,往往抹灰层自重超过粘结力,水泥砂浆抹灰层连同石灰砂浆抹灰层会一起掸落下来。即使是平面抹灰,石灰砂浆层的强度比水泥砂浆强度低,石灰砂浆又未能结硬,硬的水泥砂浆层抹在软的石灰砂浆层上,只要一受外力,水泥砂浆层就会产生破裂现象。
If cement mortar is applied during the hardening process of lime mortar, the cement mortar will harden quickly due to the rapid hydration of cement in the cement mortar. The hardened cement mortar is equivalent to adding a layer of diaphragm on the lime mortar surface to seal the lime mortar layer, so that the lime paste can not absorb carbon dioxide in the air, and the generated water can not evaporate, In this way, the lime mortar can not harden or bond well with the surface, and the bonding force between the two is very small. The plastering of cement mortar increases the self weight of the plastering layer. Often, the self weight of the plastering layer exceeds the bonding force, and the cement mortar plastering layer and lime mortar plastering layer will be dusted down together. Even for plane plastering, the strength of lime mortar layer is lower than that of cement mortar, and the lime mortar fails to harden. When the hard cement mortar layer is plastered on the soft lime mortar layer, the cement mortar layer will crack as long as it is subjected to external force.
而且两者都比较容易脱落。水泥砂浆在天气潮湿时,水分凝结在表面,石灰膏的水凝聚在内部,两者结合容易脱层,因此石灰膏下的基层,均采用水泥石灰砂浆。材料的干缩率不同。 石灰砂浆吸水,会影响水泥砂浆的强度。石灰中未完全水化的生灰会会顶裂抹灰面。石灰砂浆时间长了有析出碳酸钙的可能。这样就会分层了。
And both are easier to fall off. When the cement mortar is wet, the water condenses on the surface and the water of the lime paste condenses inside. The combination of the two is easy to delamination. Therefore, the base course under the lime paste adopts cement lime mortar. The dry shrinkage of materials is different. Lime mortar absorbs water, which will affect the strength of cement mortar. The incomplete hydrated quicklime in lime will crack the plastered surface. Lime mortar may precipitate calcium carbonate after a long time. This will layer.
以上就是为大家介绍的有关济南抹面砂浆的详细介绍,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https://www.jnfhjc.com
The above is the detailed introduction of Jinan plastering mortar. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service https://www.jnfhjc.com
The above is the detailed introduction of Jinan plastering mortar. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service https://www.jnfhjc.com