Junior problems J493. In triangle ABC, R = 4r. Prove that ∠A − ∠B = 90 ○ if and only if a − b = c2 − ab 2 . Proposed
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Enhanced massivity index based on evidence from case studies: Towards a robust pre-design assessment of early-age thermal cracking risk and practical recommendations - ScienceDirect
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Enhanced massivity index based on evidence from case studies: Towards a robust pre-design assessment of early-age thermal cracking risk and practical recommendations - ScienceDirect
![Ioannis SFIKAS | Principal Engineer | Principal Engineer, PhD CEng MICE MICT | Jacobs Engineering Group Inc, Pasadena | Strategic Consulting Ioannis SFIKAS | Principal Engineer | Principal Engineer, PhD CEng MICE MICT | Jacobs Engineering Group Inc, Pasadena | Strategic Consulting](https://i1.rgstatic.net/ii/profile.image/272769237647368-1442044662299_Q512/Ioannis-Sfikas.jpg)
Ioannis SFIKAS | Principal Engineer | Principal Engineer, PhD CEng MICE MICT | Jacobs Engineering Group Inc, Pasadena | Strategic Consulting
![Early-age thermal cracking of the walls and slabs of a cut-and-cover... | Download Scientific Diagram Early-age thermal cracking of the walls and slabs of a cut-and-cover... | Download Scientific Diagram](https://i1.rgstatic.net/publication/346037024_Enhanced_massivity_index_based_on_evidence_from_case_studies_Towards_a_robust_pre-design_assessment_of_early-age_thermal_cracking_risk_and_practical_recommendations/links/5fcfa83192851c00f85f0595/largepreview.png)
Early-age thermal cracking of the walls and slabs of a cut-and-cover... | Download Scientific Diagram
![Enhanced massivity index based on evidence from case studies: Towards a robust pre-design assessment of early-age thermal cracking risk and practical recommendations - ScienceDirect Enhanced massivity index based on evidence from case studies: Towards a robust pre-design assessment of early-age thermal cracking risk and practical recommendations - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0950061820335741-gr3.jpg)