Honey Comb is common problem in Civil Construction

Honey Comb is common problem in Civil Construction

Civil engineering, construction में ‘Honey Comb’ माने मधुमक्खी का छत्ता नहीं, बल्कि concrete में अकसर होने वाली एक सामान्य समस्या है| जानते है इस समस्या को तथा इसके उपाय (remedies) के बारे में:

What is Honey Comb in construction/civil industry? (Honey Comb क्या है?):

·         Columns/form work में concrete के अभाव के कारण बनने वाली खाली जगह या छेद, मधुमक्खी के छत्ते जैसा आकार धारण करते है, इसे honey comb कहलाया जाता है|

·         यह surfaces void, rough और pitted बन जाते है|

·         concrete पूर्णतः न भरने के कारण concrete और aggregates के बीच में gap (खाली जगह) तैयार हो जाती है|

·         तथा concrete भरते वक़्त उसे sufficient पर्याप्त vibrate न करने से वह हर जगह एक समान नहीं फैलता|

·         Honeycomb common समस्या है, लेकिन इससे building structure के strength पर प्रश्न चिन्ह उपस्थित हो सकता है|

·         Columns या beams में honey comb का पाना common है|

·         तथा form work/ reinforcement निकलते वक्त इसे detect करके दूर भी किया जा सकता है|

Main reasons for honey comb (Honey Comb के मुख्य कारण):

·         Concrete को पूरी तरह से reinforcement में न भरना

·         Vibrations की कमी (concrete भरते वक़्त)

·         Concrete में मिले हुए बड़े size के aggregates materials (जैसे पत्थर)

·         Improper (अनुचित) water cement ratio – पानी और cement का ratio 0.4 से 0.6 के बीच का होना चाहिए, ज्यादा पानी से mixture slurry हो सकता है, तथा vibrate करने में दिक्कत आ सकती है| grout छोटे छोटे छेदो से leak हो सकता है तथा plywood फुल सकता है|

·         Concrete का ऊंचाई से columns में गिरना|

·         Concrete लगाने से पहले ही उसका set होना (सुखना)|

·         Form work leakage proof न होना|

·         Over reinforcement

·         Poor workman ship

Remedies for honey comb (Honey comb पर उपाय):

·         Concrete particles (कण) और loosened aggregates (निकल रहे aggregates) chipping hammer (हथौड़ा) या wire brush से affected form work से अलग किए जाने चाहिए| Water blast या compressed air ही मदद से surface अच्छे से wash करें ताकि सारे aggregates निकाल जाए और surface solid हो|

·         Surface  dry  होने के बाद, सूखने पर, वहाँ glue (गोंद) लगाए| बाजार में तरह तरह के chemi-fix glue उपलब्ध है|

·         इसी समय, grout mix (दरारों में भरा जाने वाला चुना) पानी के साथ mix करें| ध्यान दे की पानी की मात्र grout bag पर लिखी हुई

Civil engineering, construction में ‘Honey Comb’ माने मधुमक्खी का छत्ता नहीं, बल्कि concrete में अकसर होने वाली एक सामान्य समस्या है|

Easy Nirman Construction was Never Easy Before Us

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