Advice

• Concrete pavement (plates as well) - road covering intended for road transport, bicycle or pedestrian movement and is made of previously manufactured concrete, natural mountain rock or artificial material elements (bricks or slabs).
• Concrete pavement (plates as well) foundation - constructive base course that is constructed according to the intended exploitation time from materials bound or not bound by cohesive substances

• Levelling, profiling and compression of the current foundation (earthwork or existing construction).
• If intended, a new non-freezing layer (it is recommended to use a draining material with filtration coefficient kf>= 1.0 m/dnn) with at least 30 cm thickness is constructed  after compression.
• If indented, a new base course of mineral material chips with at least 10 cm thickness is constructed after compression (the thickness depends on the transport load and intensity).
• A sand or chipping layer of 3 - 5 cm thickness is constructed after compression.
• The intended pavement stone covering is constructed (the construction must be carried our with a calculation that after h point execution the surface of the pavement stone must be 0.5 cm - 1.0 cm higher that the boundary edge).
• Pavement stone cutting works are carried out (at the edges, radius, joints with coverings of other types and similar places). When carrying out the construction works for pavement, walkway, road covering, before constructing the edges it is recommended to lay the pavement stones creating the necessary design and profile to determine the necessary gap between boundary edges because manufacturing technological tolerances of the sizes of the pavement stones are possible or it its not pre-defined how big the gap between the edges should be. Thus, unnecessary cutting of pavement stones will be prevented.
• Between the gaps (in the fixings) of pavement stones a sand of fine structure (0-2 mm, 0-4 mm) is wiped or flushed in. This process is called wedging. The material that is not wiped in the fixing must be taken off the covering before starting the compression.

• The pavement stone covering compression is carried out. The covering of the laid concrete pavement (slabs) must be started with compressing it transversally and then lengthwise. The compression is carried out only with a vibratory rammer. If any type (rinsed, abrasive, colourful, structured, grey) of pavement stone covering is being compressed during wet weather, the vibratory plate must be covered with a vulkollan (polyurethane washer). The only pavement stone type that can be compressed without vulkollan washer during dry weather is the so-called “ordinary, grey (concrete) colour pavement stone”. All the other types of pavement stone covering must be compressed with vulkollan both during dry and wet weather.

• Finally, after finishing compression in spots where it can be seen that the fixings are not filled with the sand material, they should be filled again.

• For building base course - an unbound (in some exceptions cohesive substances can be added to the mixture) mineral material mixture for foundation layers with the biggest grain (G) size of the mixture in the base course, not bigger than 45 mm. For example, mineral material chipping mixture 0-45 mm or also 0-32p mm.
• For building the levelling interlayer - sand that is suitable for non-freezing light ground with the biggest particle size of D ≤ 5,6 mm. The content of particles that goes through a sieve of 5.60 mm should be between 80-99%. The content of particles that goes through a sieve of 0.063 mm and 0.125 mm cannot be bigger than 5 % and 25 % respectively.
• For the building of concrete pavement covering - the concrete pavement elements must comply with LVS EN 1338 and the necessary strength class.
• For the building of concrete slab covering - the concrete slabs must comply with LVS EN 1339 and the necessary strength class.
•  For wedging - sand that is suitable for light ground with the biggest particle size of D ≤ 2.0 mm (depending on the width of the fixing, a material of 0-4 mm can be used). The content of particles that goes through a sieve of 5.60 mm should be between 80-99%. The content of dust particles cannot exceed 5% of the weight.

Table 5.5-1 of Section 5.5 of specifications “Road specifications 2017” of SJSC “Latvian State Roads”

A complete water run-off from the built covering surface should be ensured . Adjacent concrete element surfaces must be in one level , whereas transverse (with admissible symmetrical derogations) and longitudinal (parallel towards edges) concrete element lines should be straight.

Concrete pavement (slab) covering quality requirements and conditions for testing and measurements Table 5.5-2 of Section 5.5 of specifications “Road specifications 2017” of SJSC “Latvian State Roads”(.pdf file)

A complete water run-off from the built covering surface should be ensured . Adjacent concrete element surfaces must be in one level , whereas transverse (with admissible symmetrical derogations) and longitudinal (parallel towards edges) concrete element lines should be straight.

Concrete pavement (slab) covering quality requirements and conditions for testing and measurements Table 5.5-2 of Section 5.5 of specifications "Road specifications 2017” of SJSC “Latvian State Roads”(.pdf file)

The information mentioned above is purely informative as well as individual details can be unintelligible for persons without special knowledge. Therefore, in order to let the worker complete and the customer receive a construction that complies with the highest quality standards, Salenieku bloks Ltd specialists are ready to help every customer to select the most suitable construction fitting the current and perspective situation, to define the requirements for the raw materials, work to be carried out (not only for the pavement stone covering but also for constructive layers below) and to make sure that the construction is sustainable, useful and aesthetically attractive.