常规收费岛模具在使用的时候需要注意一下几点：不要受潮结硬。受潮结硬的水泥会降低甚至丧失原有强度，所以对已受潮成团或结硬的水泥，须过筛后使用，筛出的团块搓细或碾细后一般用于次要工程的砌筑砂浆或抹灰砂浆。对一触或一捏即粉的水泥团块，可适当降低强度等级使用;不要曝晒速干。混凝土或抹灰如操作后便遭曝晒，随着水分的迅速蒸发，其强度会有所降低，甚至完全丧失;)不要负温受冻。混凝土或砂浆拌成后，如果受冻，其水泥不能进行水化，兼之水分结冰膨胀，则混凝土或砂浆就会遭到破坏;不要高温酷热。如经常处于高温酷热条件下，会有强度损失，这是由于高温条件下，某些原料在高温条件下也会分解或体积膨胀;不要水多灰稠。人们常常忽视用水量对混凝土强度的影响，施工中为便于浇捣，有时不认真执行配合比，而把混凝土拌得很稀。多余的水分蒸发后便会在混凝土中留下很多孔隙，这些孔隙会使混凝土强度降低;不要受酸腐蚀。酸性物质与水泥中的某些物质会发生反应，生成物体积松散、膨胀，遇水后极易水解粉化。
Pay attention to the following points when using the conventional toll Island mold: don't get wet and harden. The cement hardened by
moisture will reduce or even lose its original strength. Therefore, the cement agglomerated or hardened by moisture must be screened
before use. The screened agglomerates are generally used as masonry mortar or plastering mortar for secondary works after being rubbed
or milled. For cement agglomerates that can be powdered by one touch or one pinch, the strength grade can be appropriately reduced;
Don't expose to the sun and dry quickly. If the concrete or plastering is exposed to the sun after operation, its strength will be
reduced or even completely lost with the rapid evaporation of water;) Don't get cold at negative temperature. After the concrete or
mortar is mixed, if it is frozen, the cement cannot be hydrated, and the water freezes and expands, the concrete or mortar will be
damaged; Don't be hot. If it is often under high temperature and extreme heat conditions, there will be strength loss, because under
high temperature conditions, some raw materials will decompose or expand in volume under high temperature conditions; Don't make water
too gray. People often ignore the impact of water consumption on concrete strength. In order to facilitate pouring and tamping,
sometimes the mix proportion is not carefully implemented, and the concrete is mixed very thinly. After the excess water evaporates,
it will leave many pores in the concrete, which will reduce the strength of the concrete; Do not corrode by acid. Acidic substances
will react with some substances in cement to form loose and expanded objects, which are very easy to hydrolyze and pulverize in case
of water.
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