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1. Mixed Process

Homogeneously mixing cement to the soil.
Uniformly spread the mixture of Chemroad and water.
Homogeneously mixing the mixture of Chemroad and water to the dry soil-cement.

2. Degree of compaction

The minimum degree of compaction with AASHTO T 191 should be 95 percent of the maximum dry density determined in accordance with AASHTO T 180. The moisture content of road base materials before compact should be at optimum moisture content when determined according to AASHTO T180.

3. Layer Thickness

The thickness of Chemroad soil cement stabilized road base is determined from asphalt Institute method or the multi-layer design method. The minimum layer thickness should not be less than 120 mm.

4. Field Compaction

Combination of different categories of the same plant will be permitted. In which case the number of passes for each should be such proportion of the appropriate guide line number in Table1 as will together produce the same total compactive effort as any one operated singly.

5. Unconfined Compressive Strength

The Unconfined Compressive Strength of the Chemroad soil cement stabilized road base should meet the design value. The minimum requirement is 1.7 mpa. Laboratory samples prepared in connection with the mixed design proportion are made in cylindrical to be tested at 7 days age to determine the unconfined compressive strength in accordance with AASHTO T 208.

6. Flexural Strength

The flexural strength is use to defined by cracking.The modulus of rupture test shall be carried out according to AASHTO T97.The modulus of rupture for Chemroad soil cement stabilized road base should meet the design required value.

7. Modulus of Elasticity

The modulus of elasticity of Chemroad soil cement stabilized road base can be measured statically by loading 150 mm. diameter cylinders fitted either extensometers or dynamically using electrodynamic excitation on long became of 150 mm. square section. The resilient modulus test for Chemroad soil cement stabilized road base material should by carried out according to AASHT T 274-82. The resilient modulus value should be meet the design value following the design required value. The minimum modulus of elasticity is 10,000 kg/cm. (See Table2)

 

 



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