Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

3. Section-1500
TABLE NO. 1502.3: PHYSICAL REQUIREMENT OF FLY-ASH AS CONCRETE ADMIXTURE (IS: 3812)
Sl. No. Characteristics Requirement of grade 1 fly-ash
1 Fineness, specific surface area in m 2 /kg by Blaine’s 320 m 2 /kg minimum
permeability test,
2 Particles retained on 45 micron IS sieve 34% maximum
3 Lime reactivity average compressive strength 4.5 N/mm 2
4 Soundness by autoclave test expansion of specimen 0.8% maximum
5 Drying shrinkage 0.15% maximum
Quality Control requirements for Horizontal Alignment, Surface Level, Surface Regularity, and
Acceptance Criteria for cracked concrete slabs and strength of concrete as described in subsection
1501 C shall apply.
2 Quality Control Tests
2.1 Tests prior to construction
The Quality Control tests to be carried out prior to construction are indicated in Table 1502.4
TABLE 1502.4: QUALITY CONTROL TESTS PRIOR TO CONSTRUCTION
S. No. Tests Frequency
1. Materials for concrete As in Table 1501.2
2. Concrete Mix design (With and without flyash) Approval by EE for cement content w/c ratio
and use of plasticizers
3. Plants, Equipment and tools As per contract
4. Trial length before commencement of regular work Approval by EE
5. Granular Sub base As in Table 401.3
6. Design Parameters (Grade of concrete, width, thickness As per construction drawings.
and details of joints)
2.2 Tests during construction
The quality control tests to be carried out during construction are indicated in Table 1502.5
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