Early-Age Thermal Cracking in Laser-Screeded Concrete Slabs

机译：激光熨平板的早期热裂

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A case history is presented in which a laser-screeded slab showed more cracks than would be expected in conventional strip-cast slabs. It was determined that laser-screeded slabs are more sensitive to early-age, thermal cracking than strip-cast slabs because of extra restraint provided by fixed-edge boundary conditions. Among the possible solutions is closer spacing of contraction joints and fog curing during the first day.

机译：给出了一个案例历史，其中激光找平的平板显示出比常规带铸平板预期更多的裂纹。已确定，由于固定边缘边界条件提供了额外的约束，因此，与永久浇铸板相比，激光找平的板对早期时效的热裂纹更为敏感。在可能的解决方案中，第一天的收缩缝间距较小且雾化固化。

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《Symposium on Design and Construction Practices to Mitigate Cracking, 2001》|2001年|p.43-56|共14页
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作者
H. Haynes;
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作者单位

ACI Fellow Harvey Haynes is Principal of Haynes Associates;

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原文格式 PDF
正文语种 eng
中图分类建筑科学;
关键词
case history; concrete slabs; cracks; curling; early age; fog curing; laser screed; slab-on-grade; temperature and shrinkage; thermal strain; thermal stress;

机译：病历;混凝土板；裂缝卷曲早年;雾固化激光熨平板板级温度和收缩率；热应变热应力;

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机译：混凝土基础板早期热裂的成因及加固控制
2. Effects of chloride and chloride-free accelerators combined with typical admixtures on the early-age cracking risk of concrete repair slabs [J] . Meagher Thomas, Shanahan Natallia, Buidens Daniel, Construction and Building Materials . 2015,第sepa30期

机译：含氯和不含氯的促进剂与典型掺合料组合对混凝土修补板早期开裂风险的影响
3. Minimising risk of early-age thermal cracking and delayed ettringite formation in concrete - A hybrid numerical simulation and genetic algorithm mix optimisation approach [J] . Chiniforush Alireza A., Gharehchaei Maryam, Nezhad Ali Akbar, Construction and Building Materials . 2021,第Sepa13期

机译：最大限度地减少混凝土中早期热裂纹和延迟Ettringite形成的风险 - 一种混合数值模拟和遗传算法混合优化方法
4. Early-Age Thermal Cracking in Laser-Screeded Concrete Slabs [C] . H. Haynes, American Concrete Institute, International SP-204 American Concrete Institute symposium on design and construction practices to mitigate cracking . 2001

机译：激光熨烫混凝土板的早期热裂纹
5. Thermal cracking of concrete slabs reinforced with fibre reinforced polymer bars. [D] . Osman, Mohamed. 2003

机译：纤维增强聚合物棒增强的混凝土板的热裂。
6. Insight into Thermal Stress Distribution and Required Reinforcement Reducing Early-Age Cracking in Mass Foundation Slabs [O] . Barbara Klemczak, Aneta Żmij 2021

机译：深入洞察热应力分布和所需的强化降低质量基板的早期裂缝
7. Causes of Early-Age Thermal Cracking of Concrete Foundation Slabs and their Reinforcement to Control the Cracking [O] . Bilčík Juraj, Sonnenschein Róbert, Gažovičová Natália 2017

机译：混凝土基础板早期热裂缝成因及加固控制裂缝

Early-Age Thermal Cracking in Laser-Screeded Concrete Slabs

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