Common problems in masonry mortar mix proportion

③ Rigidity of masonry mortar mix ratio.

In the actual construction process, some construction units often use a fixed mortar mix ratio to deal with all types of construction tasks in order to simplify the process. This practice ignores the specific requirements of different building properties for mortar performance. This “one-size-fits-all” mix ratio may not only damage the strength characteristics of the mortar, making it difficult to adapt to the bearing and durability requirements of a specific project, but also may lead to unnecessary loss of materials and increase construction costs.
More seriously, when the production batch, type or model of cement changes, if the old mix ratio scheme is still used, it is likely to cause quality problems, such as mortar strength grade not meeting the standard, which will affect the stability and safety of the entire building structure.
Therefore, the construction unit must abandon this rigid mix ratio approach and flexibly adjust the masonry mortar mix ratio according to specific project requirements and material characteristics to ensure the maximum construction quality and benefits.

④ Water retention rate of wall tiles.

Since buildings are deeply affected by environmental factors, it is crucial to choose suitable weather conditions for construction. Drastic changes in temperature or sudden heavy rains. All of these may have an adverse effect on the quality of construction.
In particular, when a building is soaked in rainwater during construction, the mortar of the wall bricks will absorb a lot of water, resulting in a significant reduction in its overall strength. This weakening of strength will directly affect the structural quality of the masonry, and then threaten the safety of the entire building.
Therefore, we must attach great importance to the water retention rate of wall bricks to ensure the quality and safety of the building.

⑤ The accuracy of on-site measurement needs to be improved urgently.

At the construction site, the proportioning work often relies on rough estimates and lacks accurate data support. In particular, some construction workers rely too much on personal experience and appear subjective and arbitrary in grasping the amount of cement used.
However, different mortar types correspond to different strength standards. This requires us to have scientific and rigorous test data as the basis for the proportioning. Mortar proportioning without scientific experimental guidance often results in insufficient cement usage. This not only affects the water retention performance of the mortar, but is also likely to cause its water retention rate to fail to meet the design standard.