• Check the soil composition
• Best composition is 1/3 clay and silt, 1/3 sand and gravel, 1/3 crushed stones
• Minimum 15 % clay must be in the soil
• Evaluate the necessary amount CONSOLID 444 an SOLIDRY
• Test the water sensitivity by drying back to about 50% of optimum moister content and put then the test samples in 2 cm water for 4 days
• The test sample is the reference for the road
• If the soil composition changes, new test must be made
• Test the CBR of subgrade
• Ask for the CBR of the finished road
• Calculate the thickness of the road. In most cases it will be 25 cm

• Mix-in the missing fractions
• Spray CONSOLID 444 over the soil and mix it in right after spraying
• All soil particles must be wet
• Distribute SOLIDRY over the soil and cover it with soil right afterwards
• The mixing is finished when SOLIDRY is no more visible

• Add as much water to CONSOLID 444 to get the OMC or slightly above
• For best compaction the amount of water in the soil must be optimal
• Too wet or too dry soil cannot be compacted (let it dry or add more water)

• Only well compacted soil of 98% of modified AASHTO density closes all capillary and increases the bearing rate
• Use a sheepsfoot roller for compacting
• Compaction is finished when the feet coming out of the soil
• Finish the surface with a grader and a flat roller

• When the flat roller does no more sucks in, then apply the wearing course.
• The wearing course can be any kind of material. Best is 3 - 5 cm of Asphalt concrete
• The surface must be dust free before adding the wearing course
• If the wearing course cannot be applied right after wards, then CONSERVEX is spread over the surface to prevent the road from abbreviation and to become dusty when dry or slippery when wet.

Soil Test Result, Wangcang, SC:

O   = untreated
BS  = treated with 1% CONSOLID + SOLIDRY
BSS = treated with 2% CONSOLID + SOLIDRY
      

WATER IMMERSION TEST. 20 MM DEEP IMMERSED FOR 4 DAYS, CAPILLARY RISE in mm

RECOMMENDATION FOR TREATMENT WITH THE CONSOLID SYSTEM:
The in situ soil, MC, Silty Clay, can be success- fully treated with the standard quantities of
CONSOLID + SOLIDRY, but handling will be difficult, shrinkage will be too high during drying. With the addition of missing fractions, like sand or dirty gravel, you get substantial improve.
RECOMMENDED TREATMENT per sqm:On a properly compac- ted subgrade material 250 mm of the in-situ soil is treated with 200 ml CONSOLID and 2 kg SOLIDRY in full depth, followed with additionally 2 kg SOLIDRY in the top 100 mm.