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X-ORIGINAL-URL:https://concretesocietysa.org.za
X-WR-CALDESC:Events for Concrete Society of Southern Africa
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TZID:Africa/Johannesburg
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DTSTART:20240101T000000
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BEGIN:VEVENT
DTSTART;TZID=Africa/Johannesburg:20250508T150000
DTEND;TZID=Africa/Johannesburg:20250508T160000
DTSTAMP:20260426T020856
CREATED:20250411T134355Z
LAST-MODIFIED:20250602T134142Z
UID:17258-1746716400-1746720000@concretesocietysa.org.za
SUMMARY:CONCRETEClass 1.4 - Alkali-Silica Reaction (ASR) in Concrete
DESCRIPTION:This class will explore Alkali-Silica Reaction (ASR)—a chemical process that can lead to the deterioration of concrete. ASR occurs when “reactive” silica in certain aggregates reacts with alkali hydroxides present in the concrete’s pore solution. In the presence of moisture\, this reaction forms an expansive gel that exerts internal pressure\, leading to cracking and deformation. Over time\, ASR can significantly compromise the durability and structural integrity of concrete structures. \nKey topics covered include:\n– ASR deterioration: A global and South African perspective\n– The chemistry of ASR: Understanding the underlying chemical processes\n– ASR symptoms and their structural impact \nRequirements for attending this class:\n– Basic knowledge of the constituents of concrete\n– Basic mathematics\, no more than Matric Level \nThe class will build on prior knowledge of concrete deterioration mechanisms and emphasise the role of “reactive” aggregates in concrete performance. \nPresenter: Ms. Janina P. Kanjee\, University of the Witwatersrand\nMs. Janina P. Kanjee is a lecturer at the University of the Witwatersrand\, where she has been teaching since 2018. Her doctoral research focused on Alkali-Silica Reaction (ASR) deterioration in a reinforced concrete railway bridge\, located in Southern Johannesburg which was constructed in 1946.\nIn 2023\, she was honoured with the Young Concrete Researcher Award by Cement & Concrete SA\, recognizing her impactful contributions to the field. Her ongoing research centres on concrete durability\, ASR deterioration\, sustainable construction materials and practices. \nDate: Thursday\, 08 May 2025\nTime: 15:00 – 16:00 \nECSA CPD accreditation applied for\nOnly CSSA Members qualify to receive ECSA CPD points. To become a Member visit our website: www.concretesocietysa.org.za or contact Natasja. \nRSVP:\nNatasja Pols on or before Wednesday\, 07 May 2025 natasja.pols@concretesocietysa.org.za \nrsvp here
URL:https://concretesocietysa.org.za/event/concreteclass-1-4-alkali-silica-reaction-asr-in-concrete/
LOCATION:Webinar\, Microsoft Teams
CATEGORIES:National
ATTACH;FMTTYPE=image/jpeg:https://concretesocietysa.org.za/wp-content/uploads/2025/04/CONCRETEclass1.4_invite.jpg
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BEGIN:VEVENT
DTSTART;TZID=Africa/Johannesburg:20250522T150000
DTEND;TZID=Africa/Johannesburg:20250522T160000
DTSTAMP:20260426T020856
CREATED:20250411T133357Z
LAST-MODIFIED:20250602T134207Z
UID:17253-1747926000-1747929600@concretesocietysa.org.za
SUMMARY:CONCRETEFiX 5.6 - Extrinsic Factors That Alter True Measured Concrete Strength
DESCRIPTION:By Dr Roderick Rankine\, Rod Rankine Engineering Solutions cc \nThe measured strength of concrete has life changing implications for safety\, profitability and survival of construction companies. Not only does this strength depend upon the composition and intrinsic properties of the concrete tested\, but also on the way the concrete is tested. Testing standards\nattempt to standardise testing methodologies to ensure that measured strength is true\, reliable and accurate. Departures from these standards (whether intentional or unintentional) can have profound effects on measured strength (usually to the downside) often leading to needless disputes and even bankruptcy. This presentation will demonstrate the most common mistakes by means of reference to case studies and laboratory demonstrations and it will endeavour to offer guidelines to avoid pitfalls. \nDATE: Thursday\, 22 May 2025\nvia Teams @ 15:00 SAST (UTC+2 hours)\nAttendance Free \nECSA CPD accreditation applied for\nOnly CSSA Members qualify to receive ECSA CPD points.\nTo become a Member visit our website: www.concretesocietysa.org.za or contact Natasja. \nRSVP\nNatasja Pols on or before Wednesday\, 21 May 2025 to natasja.pols@concretesocietysa.org.za \nRSVP HERE\n\n 
URL:https://concretesocietysa.org.za/event/concretefix-5-6-extrinsic-factors-that-alter-true-measured-concrete-strength/
LOCATION:Webinar\, Microsoft Teams
CATEGORIES:National
ATTACH;FMTTYPE=image/jpeg:https://concretesocietysa.org.za/wp-content/uploads/2025/04/concretefix-S5-E6_invite.jpg
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