Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

3. Section-500
5.3 Quality Control Checks by AE/EE
The quality checks by AE/EE are indicated in Table 504.6.
Table 504.6: QUALITY CONTROL CHECKS BY AE/EE
Stage Test Frequency Designation of
Inspecting Officer
1. Finished (i) Density of compacted (a) One test for every 500 m AE
Bituminous
Macadam Base
layer length or part thereof
Layer (b) One test for every one km length EE
(ii) Binder Content part
thereof
One test for each 500 m length or AE/EE
(iii) Surface Regularity
and Transverse Profile
Random Checking EE
C. Do’s and Don’ts
1. Ensure that stone aggregate conforms to the physical
requirements and grading requirements and are dry
and clean.
2. In case the aggregate has poor affinity to bitumen
use anti stripping agent with the approval of
Engineer.
3. While transporting the mixture it should be suitably
covered by tarpaulin.
4. Rolling operations should be completed before the
mix becomes unworkable
5. Maintain strict control on temperature while mixing
and rolling.
6. Regulate the rate of delivery of material to paver to
enable it to operate continuously.
505. BUILT-UP SPRAY GROUT
A. Methodology
Do’s Don’ts
1. Do not undertake the work in foggy, rainy or windy
weather or when the atmospheric temperature in the
shade is less than 10OC. 2. Do not allow the difference in temperature of binder
and aggregate to increase beyond 14OC at any time.
3. Do not allow the premix material to adhere to the roller
wheels. (Do not use excess water for the purpose. Light
sprinkling should do.)
4. Do not use lubricating oil on the wheels of the roller to
prevent mix from adhering.
5. Do not allow traffic until the mix has been covered with
a wearing course.
6. Do not move roller at a speed more than 5 km/h.
1. Prepare the base on which built-up spray grout course is to be laid to the specified lines, grade
and cross-section.
2. Apply tack coat over the base preparatory to laying of the built-up spray grout.
3. Spread the coarse aggregates uniformly by mechanical means or other suitable method at the rate
of 0.5 cum per 10 sqm area. Remedy all high spots and depressions by removing or adding
aggregates.
4. Commence rolling with 80-100 kN rollers (three-wheel or tandem type), beginning from the edge
and progressing towards the centre longitudinally. On superelevated portions, rolling should
progress from lower to upper edge parallel to centre line of pavement.
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