Dar Magazine I9 Page 36

i9 |

On solid ground

Evaluating the technique

Quality Control Tests' Results of the Calibration
Area Pressuremeter Tests (PMT) were performed
to assess the ground condition of the test section
before and after improvement.

Test (PMT002) was performed before
treatment while tests (PMT203 and PMT204)
were performed after treatment. Figures 4 and 5
show the PMT results.

Cone Penetration Test (CPT)

In addition to the PMT, CPTs were also performed to assess
the ground condition at the tests locations before and after
improvement. CPTs were performed at two zones of the test section
as shown in Figure 3. CPT003 (before improvement) and CPT205
and CPT206 (after improvement) were performed at the right hand
side (RHS) of the test section, while CPT004 (before improvement)
and CPT207 and CPT208 (after improvement) were performed at
the left hand side (LHS) of the test section. The reason behind that is
to cover a large area of the test section with insitu tests to get more
confident of the uniformity of the improvement process. Figures 5
and 6 show the CPT results.

Figure 6

Cone Resistance (qc) before and after improvement at the LHS

Figure 7

Cone Resistance (qc) before and after improvement at the RHS movement

Figure 5

PMT Modulus (Em) before and after improvement

Figure 4

Limit Pressure (Pl) before and after improvement