Maintenance control of production pavement bricks |
Release Date: 2023-06-16 Views: 1053 News Editor: |
Concrete pavement bricks are widely used in public places such as sidewalks, squares and gardens, Concrete earthen pavement brick is a kind of good pavement material, 但是, The production of concrete pavement bricks is due to the reasons of raw materials, concrete matching and production technology, It is easy to affect the strength of concrete pavement bricks, color grade, wear resistance, water absorption, frost resistance and other main quality technical indicators, It causes the quality problems of road bricks, It affects the practical application of concrete pavement bricks。Therefore, the production quality control of concrete pavement bricks, pay attention to the following problems: 1. Production process control Road brick molding should grasp the following principles: (1) Due to the different mixed density of the raw materials used, it is appropriate to use the low water-cement ratio pressure vibration molding process to make the product uniform and dense。The compaction principle is based on actual measurement of wet brick weight。The heavier the brick, the denser。 ( 2) 控制水灰比: 面层以有微水泥浆, 但不粘上压模具为原则; 底层以侧面有水泥浆但不胀料为原则。 (3) Color control: distance brick 1.5 m no color difference for the principle。 (4) Thickness: the brick thickness is controlled at 58~60 mm, and the surface layer thickness is more than 8 mm。
Two, strictly control the molding and size deviation Strictly control the mixing sequence and mixing time。In the forming process, the phenomenon of layering, floating, caking and segregation of concrete should be preventedIn order to ensure the strength and appearance size of road bricks, two sets of standard molds are selected, and one set of molds is used until the size deviation reaches 0.5mm, and then change another set of use to reach 0.5 mm; 然后要定期轮换这两套模具。
Three, low temperature maintenance The strength and decoration of concrete pavement bricks are restricted by the curing conditionsThe maintenance method must be selected according to local conditions。In order to facilitate cement hydration and decoration, the maintenance kiln temperature does not exceed 45 ° C maintenance, the kiln temperature is close to 40 ~50 ° C as the principle, in order to ensure the decoration of concrete pavement bricks, it is appropriate to use low temperature maintenance or natural maintenance in the maintenance kiln, can not give water as often as wall bricks。 |
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