Experimental Study on Shrinkage Performance and Improvement of Cement-Stabilized Recycled Concrete

Experimental Study on Shrinkage Performance and Improvement of Cement-Stabilized Recycled Concrete | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Experimental Study on Shrinkage Performance and Improvement of Cement-Stabilized Recycled Concrete Jing Wang, Li Chen, Mengxi Liu This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8066474/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract To investigate the shrinkage properties of cement-stabilized recycled concrete, a systematic study was conducted involving compaction tests, dry shrinkage tests, and temperature shrinkage tests with varying amounts of recycled concrete aggregate (0%, 20%, 40%, 60%, 80%, 100%) and cement dosages (3%, 4%, 5%, 6%). The analysis focused on the evolution of drying shrinkage coefficients with testing age, the variation of thermal shrinkage coefficients with temperature, and the influence of both recycled concrete aggregate content and cement dosage on the total drying shrinkage coefficient and the total thermal shrinkage coefficient. Additionally, the effectiveness of polypropylene fibers in improving shrinkage performance was evaluated. The results indicated that the total drying shrinkage coefficient decreases with an increase in recycled concrete content，whereas the total thermal shrinkage coefficient exhibits a positive correlation with recycled concrete content. Both the total drying shrinkage coefficient and the total thermal shrinkage coefficient were found to increase with the cement dosage. The change in the dry shrinkage coefficient over test days follows a logarithmic curve model. The thermal shrinkage coefficient initially decreases and then increases as the temperature drops, reaching its minimum in the range of 10℃-0℃. The incorporation of polypropylene fibers fibers significantly improves shrinkage properties of cement-stabilized recycled concrete, with the total drying shrinkage coefficient reduced by up to 25.5% and the total thermal shrinkage coefficient by up to 24.1%. Physical sciences/Engineering Physical sciences/Materials science cement-stabilized recycled concrete shrinkage property drying shrinkage coefficient thermal shrinkage coefficient polypropylene fibers Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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