Selection of mechanisms for soil compaction

1. 
   – soil compaction between the columns foundations;
   
2. 
   – over the columns foundations.
   

-motor rollers with smooth rolls – for cohesive soil;

-vibroroller– for non–cohesive soils;
-hydraulic–mechanical vibratory compactors – for all soils;
-electrical self–moving vibrating rammer – for non–cohesive and lowly cohesive soils;

-electrical rammer – for cohesive and non–cohesive soils.

Shift operating performance of rollers is calculated by the formula:

_{𝑃 =} (𝐵 − 𝑏) ∙ 𝜈 ∙ 1000 ∙ ℎ ∙ 𝑇 _0,85

𝑠ℎ.𝑜. _𝑚

where, 𝐵– width of compaction line (annex. №1. table. 4);

𝑏 – width of overlap of adjacent lines (0,1–0,2 m);

𝜈 – average speed (4–6 km / h);
ℎ – width of the condensed layer, m (annex. №1. table. 4);

m– required number of blows or passes (8…10).

The composition of the machines included in the set to be determined by