Tlaletso Global Photonics (TGO) designs and manufactures laser diodes, VCSEL, DFB lasers, laser drivers, CDR circuits, optical modulators, TIAs, co-packaged optics, silicon photonics, linear drive plu...
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By minimizing the number of construction joints and ensuring that any unavoidable joints are treated meticulously with construction joint preparation techniques and concrete bonding agents,
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Cold joints might lead to serious issues related to the durability, structural integrity, and aesthetic appeal of concrete structures. Overall, these joints occur when there is a delayed pouring of fresh concrete
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A loss of resistance over 30% for cold concrete cylinders with diagonal joints was found, while concrete cylinders with horizontal cold joints had no loss of resistance. Thus, the loss of resistance depends
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At 900 °C, while the splitting tensile strength loss in the concrete without cold joints was 83.58%, the loss in the concrete with a cold joint was 85.53%. With application of high temperatures, large
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Cold joints can really weaken concrete structures, so it''s important to spot and stop them from happening. The main reasons for cold joints include delays in pouring, poor planning, equipment
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Cold joints, formed due to interruptions in the concrete placement process, significantly impact the mechanical behavior of concrete structures. This study comprehensively examines the
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Cold joints negatively affect concrete strength, especially beyond 180 minutes of delay. Horizontal failure planes exhibited superior strength compared to diagonal and vertical planes.
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According to Gerges et. al. (2015), having a cold joint reduces the splitting tensile strength of a monolithic specimen by approximately 55%.
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The aim of the present study is to determine the loss in the flexural strength capacity of a reinforced concrete (RC) beam due to the presence of cold joint under two conditions: (i) different
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The main consequence of a cold joint is the loss of monolithic strength, which compromises the structural integrity of the element. Concrete placed continuously acts as a single
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Numerical findings indicate that cold joints are detectable with a void ratio of 40% or greater. For the 60% and 80% void ratios, surface wave velocities register notably lower for wavelengths below 0.1 m
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Cold joints are often regarded as structural weaknesses due to the likelihood of inadequate bonding between various concrete layers, resulting in diminished strength and longevity. Cold joints can
View moreHigh-power CW/pulsed laser diodes (808nm–1550nm) and VCSEL arrays for 3D sensing, LIDAR, and optical interconnects.
Co-packaged optics engines, silicon photonics ICs, and optical I/O solutions for high-density switches and AI clusters.
400G/800G QSFP-DD/OSFP modules, active optical cables, and custom optical engines for data center interconnects.
Low-jitter laser drivers, integrated CDR circuits, and linear TIAs for coherent optics and short-reach links.
We provide custom laser diodes, VCSEL arrays, DFB lasers, drivers, CDR, modulators, TIAs, co-packaged optics, silicon photonics, LPO, transceivers, and AOCs.
From prototype to mass production, our team ensures premium quality and technical support.
23 Photonics Avenue, Techno Park, Stellenbosch, 7600, South Africa
+27 63 148 2975 | +27 63 148 2975 | +86 138 2753 9641 | +86 138 2753 9641 | [email protected]