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Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

Quality Assurance Handbook for Rural Roads Volume-I - pmgsy

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(ii) Sand/Stone Dust/Marble Dust<br />

TABLE 600.1: CEMENT AND LIME<br />

125<br />

<strong>Quality</strong> <strong>Assurance</strong> <strong>Handbook</strong> <strong>for</strong> <strong>Rural</strong> <strong>Roads</strong><br />

Type Grade IS Code<br />

Ordinary Portland Cement 33 IS: 269<br />

Blast Furnace Slag Cement - IS:455<br />

Portland Pozzolana Cement Fly ash based IS:1489-Part1<br />

Portland Pozzolana Cement Calcined Clay Based IS:1489-Part II<br />

Sulphate Resistance Portland - IS:12330<br />

Cement *<br />

Lime in Cement-Lime (Composite) Type A and B IS:712<br />

Mortar<br />

* Use in masonry structures which are likely to be affected by the presence of sulphates in surrounding soil or in ground water in<br />

concentration of 0.2 percent and 0.03 percent respectively.<br />

Sand or Stone Dust or Marble Dust shall consist of hard, durable and clean particles of<br />

natural sand, crushed gravel, crushed marble or suitable combinations there of and shall<br />

con<strong>for</strong>m to the requirements given in Table 600.2<br />

TABLE 600.2: SAND/STONE/MARBLE DUST<br />

Material IS Code<br />

Sand IS:2116<br />

Stone/Marble Dust IS:383<br />

(iii) Cement Sand Mortar<br />

Cement Sand mortar shall in general con<strong>for</strong>m to IS:2250 and its consistency and water<br />

retentivity shall be determined as per the code.<br />

The recommended values of consistency and water retentivity are given in Table 600.3<br />

TABLE 600.3 CONSISTENCY AND WATER RETENTIVITY<br />

Property Work Value<br />

Consistency - Laying of solid brick walls 90-130mm<br />

- Filling cavities 130-150 mm<br />

Water retentivity(Flow of suction) Masonry work with high suction More than 70% of flow be<strong>for</strong>e<br />

characteristics suction<br />

Refer to Sub-section 800 <strong>for</strong> the strength requirement of mortar using 33 Grade cement.<br />

(iv) Bricks<br />

First class bricks of any of the following two types shall be used in masonry works. The<br />

physical requirements of bricks are given in Table 600.4

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