{"id":416,"date":"2023-02-10T10:00:52","date_gmt":"2023-02-10T10:00:52","guid":{"rendered":"https:\/\/structureauditagency.com\/?p=416"},"modified":"2023-02-10T10:00:53","modified_gmt":"2023-02-10T10:00:53","slug":"structure-health-assessment-and-audit-of-a-fire-damage-structure-using-non-destructive-testing","status":"publish","type":"post","link":"https:\/\/structureauditagency.com\/?p=416","title":{"rendered":"Structure Health Assessment and Audit of a Fire Damage Structure Using Non Destructive Testing"},"content":{"rendered":"\n
\"\"
Institutional Building<\/figcaption><\/figure>\n\n\n\n
S.NO<\/strong><\/td>TEST NAME<\/strong><\/td>REFERENCE OF TEST<\/strong><\/td>PURPOSE OF TEST ,TEST RESULT & COMMENT<\/strong><\/td>REFERENCE<\/strong><\/td><\/tr>
1<\/td>Rebound Hammer Test<\/td>IS 13311 (Part-2)-1992, ASTM C 805-02, BS 6089:1981 and BS 1881: Part 202, BSEN:13791<\/td>To determining the estimated\u00a0 compressive strength and uniformity of concrete

Around 36 test conducted on RCC slab and beams and compressive strength of concrete tested range from M16-M30 Grade of concrete

Which is more than M20 as per the latest codal provision of\u00a0 IS 456:2000<\/td>		<\/td><\/tr>
2<\/td>Ultrasonic Pulse Velocity<\/td>IS 13311 (Part-1)-1992,\u00a0 ASTM: C597-83,\u00a0 BS 6089: 1981 and BS 1881: Part 203 and BSEN:13791<\/td>To determine the quality of concrete, soundness and density of concrete.

Around 36 test conducted on RCC slab and column and its quality is found to be Doubtful-Good Concrete.

Which clearly indicates that there is presence of minor voids\/minor cracks inside the concrete which is not exposed on the surface till now<\/td>		<\/td><\/tr>
3<\/td>Half Cell Potential Test<\/td>ASTM C876-1980 ,ASTM C876 [6]-1991<\/td>To determine the percentage of risk of corrosion in reinforcement

Around 5 test have been performed on RCC beam and slab. It is\u00a0 found out that chances of corrosion is 0%-3% in reinforcement bars

As per testing its, clear that the existing reinforcement in members are rusted about 10% of existing diameter of steel\u00a0<\/td>		<\/td><\/tr>
4<\/td>Carbonation\u00a0 Test<\/td>BS EN: 14630<\/td>If depth of carbonation is greater than cover, then incubation period is over; degradation rate will be accelerated.

4 Samples are extracted and its average carbonation depth is found to be less than effective cover.

It is in the permissible limits as per Indian Codal provision<\/td>		<\/td><\/tr>
5<\/td>pH Value Test<\/td>BS EN 14630<\/td>Around 5 test conducted on RCC slab ,beam and column and its quality is found to be alkaline\u00a0 value<\/td><\/td><\/tr>
6<\/td>Cover Depth Measurement<\/td>\u00a0IS:456:2000<\/td>To see the adequacy of concrete cover to Rebars and creation of Contour Mapping of cover depth in RCC Structure.

6 Test were performed on RCC slab, & column& Sufficient Cover is found to be there to all structural members.

It is sufficient as per the Indian Codal \u00a0provision IS 456:2000<\/td>		<\/td><\/tr>
7<\/td>Core Cutting<\/td>IS:456:2000
\u00a0\u00a0 \u00a0IS 516:1959
\u00a0\u00a0 IS 1199-1959: \u00a0\u00a0\u00a0Part 4
BS 1881: Part 4: 1970
ASTM C: 42 \u2013 77
BS EN 13791:2007<\/td>		Around 4 test conducted on RCC slab ,beam and column and its quality is found to be M21 value.

<\/td>		<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Recommendations :<\/strong>–<\/p>\n\n\n\n

1. Central slab area as highlighted need to be dismantle and recast. The new steel will be same as per previous design.<\/p>\n\n\n\n

2. Periphery\/Low effected slab need to be treated with patch repair as per Repair A and low vicious injection grouting at spacing of 300mm c\/c both ways using 12mm NRV nozzles.<\/p>\n\n\n\n

3. All the effected beams need to be jacketed by means of RCC jacketing as attached in the report.<\/p>\n\n\n\n

4. Some columns need to be treated with patch repair and injection grouting just 1000mm from top area only.<\/p>\n","protected":false},"excerpt":{"rendered":"

S.NO TEST NAME REFERENCE OF TEST PURPOSE OF TEST ,TEST RESULT & COMMENT REFERENCE 1 Rebound Hammer Test IS 13311 (Part-2)-1992, ASTM C 805-02, BS 6089:1981 and BS 1881: Part 202, BSEN:13791 To determining the estimated\u00a0 compressive strength and uniformity of concrete Around 36 test conducted on RCC slab and beams and compressive strength of […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-416","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/structureauditagency.com\/index.php?rest_route=\/wp\/v2\/posts\/416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/structureauditagency.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/structureauditagency.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/structureauditagency.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/structureauditagency.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=416"}],"version-history":[{"count":2,"href":"https:\/\/structureauditagency.com\/index.php?rest_route=\/wp\/v2\/posts\/416\/revisions"}],"predecessor-version":[{"id":419,"href":"https:\/\/structureauditagency.com\/index.php?rest_route=\/wp\/v2\/posts\/416\/revisions\/419"}],"wp:attachment":[{"href":"https:\/\/structureauditagency.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/structureauditagency.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/structureauditagency.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}