Eliminate tile caulking agent crack technical measures have?

Intensity of ceramic tile seam filling agent development is to improve the crack resistance of ceramic tile seam filling agent important aspect, is also to prevent temperature crack of mass ceramic tile gap filling agent basic guarantee. Strength is ceramic tile ceramic tile seam filling agent filled seam an agent's ability to resist all kinds of damage, only have certain resistance ability, can under the effects of the internal stress due to various reasons and does not produce craze. Of course, the same about the temperature stress. If the strength of the ceramic tile seam filling agent is very low, even very small temperature should force, would be enough to make the ceramic tile is filled seam an agent craze, or, even without temperature stress, stress produced by water freeze damage can also be a ceramic tile seam filling agent. Under normal circumstances the construction, the strength of the ceramic tile seam filling agent general development faster, have to consider is the balance problem of strength increased with the temperature stress. In the winter construction, the strength of the ceramic tile seam filling agent development is slow, often showing resistance ability is insufficient. Therefore, improve the resistance of ceramic tile seam filling agent is the main aspect of contradiction, especially for large size ceramic tile seam filling agent casting pieces of external tile gap filling agent, this problem is more outstanding. The primary cause of ceramic tile seam filling agent temperature crack is quick, both inside and outside temperature difference, rather than the temperature of ceramic tile seam filling agent. Only from temperature stress, the large volume of ceramic tile gap filling agent causes of cracking is the deformation of internal and external tile gap filling agent inconsistencies, and produce the cause of the deformation of inconsistency is the inconsistency of temperature. No matter how is the temperature of ceramic tile seam filling agent, as long as a part of the temperature of ceramic tile gap filling agent is the same, won't produce this kind of deformation of the inconsistencies, so there would be no formation temperature stress. Thus, for big size ceramic tile gap filling agent, it should be noted that can form the temperature difference, rather than the temperature of the ceramic tile seam filling agent itself. Eliminate tile caulking gun crack technical measures have? 1, the ceramic tile of beam-column node caulking gun shall implement the principle of 'first after the high low, namely first casting high strength grade ceramic tile is filled seam an agent, after casting and low strength grade ceramic tile seam filling agent. On the border of high and low strength grade ceramic tile gap filling agent, set up the wire mesh, so that the operator easy to control the casting range of ceramic tile gap filling agent. 2, high strength grade ceramic tile conventional caulking agent mixture ratio adjustment, namely under the condition of satisfy the intensity and the pumpability, try to reduce dosage of cement, sand ratio, increase the gravel content, reduce slump, reduce water consumption, and dosage of fly ash and admixture also make corresponding adjustment, as far as possible to reduce the hydration heat temperature of ceramic tile gap filling grout, reduce because of the different strength grade ceramic tile seam filling agent contract or cracks caused by temperature difference between inside and outside of ceramic tile gap filling grout. 3, Bridges, the ceramic tile of caulking gun using the second pouring method, namely in ceramic tile seam filling agent before the final set casting again, especially in the butterfly lovers node, to increase the compactness of ceramic tile gap filling agent, reduce shrinkage. 4, in easy to produce cracks in beam profile increase the level of structure reinforcement, improve crack resistance of beam. 5, strict control of ceramic tile is filled seam an agent, grouting agent of mixture slump, in the field of every car ceramic tile gap filling agent, slump test, found abnormal, immediately return, and make records, prevent ceramic tile seam filling agent spent big slump caused by shrinkage crack.

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