\"The aim of this study is to develop two classes of low-shrinkage high-performance concrete (HPC): fiber-reinforced super workable concrete (FR-SWC) for infrastructure construction and fiber-reinforced self-consolidating concrete (FR-SCC) for repair applications. HPC with excess content of shrinkage mitigation materials (SMMs), including shrinkage-reducing admixture (SRA), superabsorbent polymer (SAP), and expansive agent (EA) has a detrimental effect on mechanical performance. These classes of HPC were optimized to reduce shrinkage, enhance mechanical properties, and improve durability. The effect of fiber type (macro synthetic fiber, MSF; 5D steel fiber, 5D; 80% 3D + 20% short steel fibers; STST), SMMs, and plastic viscosity on bond strength and structural properties of beams was evaluated. Test results indicated that optimal SRA-MSF system led to low drying shrinkage without mitigating mechanical properties of FR-SWC. Using 1.25% SRA improved shrinkage resistance and flexural post-cracking behavior. Adding 0.66% MSF and 1.25% SRA notably reduced crack development, delayed onset of corrosion, and increased residual flexural properties of cracked beams. Adding SMMs enhanced the bond strength of FR-SCC by 10%-60%. FR-SCC with SRA exhibited better bond and flexural properties than those with EA and SAP. Adding 5D in FR-SCC showed excellent flexural properties, followed by MSF and STST. FR-SWC beams with various fibers showed 10%-55% lower crack width, 25%-55% higher yield loads, and 10%-30% higher ultimate loads than conventional beams. Beam elements repaired by FR-SCC with plastic viscosity (10-40 Pa·s) reduced crack width (45%-65%) and improved flexural load capacity (15%-30%) due to favorable dispersion of fibers\"-- Abstract, p. iv
","abstract_html":"<p>"The aim of this study is to develop two classes of low-shrinkage high-performance concrete (HPC): fiber-reinforced super workable concrete (FR-SWC) for infrastructure construction and fiber-reinforced self-consolidating concrete (FR-SCC) for repair applications. HPC with excess content of shrinkage mitigation materials (SMMs), including shrinkage-reducing admixture (SRA), superabsorbent polymer (SAP), and expansive agent (EA) has a detrimental effect on mechanical performance. These classes of HPC were optimized to reduce shrinkage, enhance mechanical properties, and improve durability. The effect of fiber type (macro synthetic fiber, MSF; 5D steel fiber, 5D; 80% 3D + 20% short steel fibers; STST), SMMs, and plastic viscosity on bond strength and structural properties of beams was evaluated. Test results indicated that optimal SRA-MSF system led to low drying shrinkage without mitigating mechanical properties of FR-SWC. Using 1.25% SRA improved shrinkage resistance and flexural post-cracking behavior. Adding 0.66% MSF and 1.25% SRA notably reduced crack development, delayed onset of corrosion, and increased residual flexural properties of cracked beams. Adding SMMs enhanced the bond strength of FR-SCC by 10%-60%. FR-SCC with SRA exhibited better bond and flexural properties than those with EA and SAP. Adding 5D in FR-SCC showed excellent flexural properties, followed by MSF and STST. FR-SWC beams with various fibers showed 10%-55% lower crack width, 25%-55% higher yield loads, and 10%-30% higher ultimate loads than conventional beams. Beam elements repaired by FR-SCC with plastic viscosity (10-40 Pa·s) reduced crack width (45%-65%) and improved flexural load capacity (15%-30%) due to favorable dispersion of fibers"-- Abstract, p. iv</p>","abstract_has_math":false,"creators":["Wei, Jingjie"],"institution":"Missouri University of Science and Technology","degree_name":"Ph. D. in Civil Engineering","degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"","date_published":null,"updated_at":"2026-07-24T03:18:26Z","subjects":["Civil and Environmental Engineering","Civil Engineering","Engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarsmine.mst.edu/doctoral_dissertations/3299","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Wei, Jingjie"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:type","label":"Dc Type","values":["Dissertation - Open Access"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph. D. in Civil Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Missouri University of Science and Technology"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Civil and Environmental Engineering","Civil Engineering","Engineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarsmine.mst.edu/doctoral_dissertations/3299"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["\"The aim of this study is to develop two classes of low-shrinkage high-performance concrete (HPC): fiber-reinforced super workable concrete (FR-SWC) for infrastructure construction and fiber-reinforced self-consolidating concrete (FR-SCC) for repair applications. HPC with excess content of shrinkage mitigation materials (SMMs), including shrinkage-reducing admixture (SRA), superabsorbent polymer (SAP), and expansive agent (EA) has a detrimental effect on mechanical performance. These classes of HPC were optimized to reduce shrinkage, enhance mechanical properties, and improve durability. The effect of fiber type (macro synthetic fiber, MSF; 5D steel fiber, 5D; 80% 3D + 20% short steel fibers; STST), SMMs, and plastic viscosity on bond strength and structural properties of beams was evaluated. Test results indicated that optimal SRA-MSF system led to low drying shrinkage without mitigating mechanical properties of FR-SWC. Using 1.25% SRA improved shrinkage resistance and flexural post-cracking behavior. Adding 0.66% MSF and 1.25% SRA notably reduced crack development, delayed onset of corrosion, and increased residual flexural properties of cracked beams. Adding SMMs enhanced the bond strength of FR-SCC by 10%-60%. FR-SCC with SRA exhibited better bond and flexural properties than those with EA and SAP. Adding 5D in FR-SCC showed excellent flexural properties, followed by MSF and STST. FR-SWC beams with various fibers showed 10%-55% lower crack width, 25%-55% higher yield loads, and 10%-30% higher ultimate loads than conventional beams. Beam elements repaired by FR-SCC with plastic viscosity (10-40 Pa·s) reduced crack width (45%-65%) and improved flexural load capacity (15%-30%) due to favorable dispersion of fibers\"-- Abstract, p. iv
"]},{"key":"dc:title","label":"Title","values":["Low-Shrinkage Fiber-Reinforced Concrete for Infrastructure Construction and Rehabilitation"]}]}],"canonical_facts":{"dc:creator":["Wei, Jingjie"],"dc:description.abstract":["\"The aim of this study is to develop two classes of low-shrinkage high-performance concrete (HPC): fiber-reinforced super workable concrete (FR-SWC) for infrastructure construction and fiber-reinforced self-consolidating concrete (FR-SCC) for repair applications. HPC with excess content of shrinkage mitigation materials (SMMs), including shrinkage-reducing admixture (SRA), superabsorbent polymer (SAP), and expansive agent (EA) has a detrimental effect on mechanical performance. These classes of HPC were optimized to reduce shrinkage, enhance mechanical properties, and improve durability. The effect of fiber type (macro synthetic fiber, MSF; 5D steel fiber, 5D; 80% 3D + 20% short steel fibers; STST), SMMs, and plastic viscosity on bond strength and structural properties of beams was evaluated. Test results indicated that optimal SRA-MSF system led to low drying shrinkage without mitigating mechanical properties of FR-SWC. Using 1.25% SRA improved shrinkage resistance and flexural post-cracking behavior. Adding 0.66% MSF and 1.25% SRA notably reduced crack development, delayed onset of corrosion, and increased residual flexural properties of cracked beams. Adding SMMs enhanced the bond strength of FR-SCC by 10%-60%. FR-SCC with SRA exhibited better bond and flexural properties than those with EA and SAP. Adding 5D in FR-SCC showed excellent flexural properties, followed by MSF and STST. FR-SWC beams with various fibers showed 10%-55% lower crack width, 25%-55% higher yield loads, and 10%-30% higher ultimate loads than conventional beams. Beam elements repaired by FR-SCC with plastic viscosity (10-40 Pa·s) reduced crack width (45%-65%) and improved flexural load capacity (15%-30%) due to favorable dispersion of fibers\"-- Abstract, p. iv
"],"dc:identifier":["https://scholarsmine.mst.edu/doctoral_dissertations/3299"],"dc:subject":["Civil and Environmental Engineering","Civil Engineering","Engineering"],"dc:title":["Low-Shrinkage Fiber-Reinforced Concrete for Infrastructure Construction and Rehabilitation"],"dc:type":["Dissertation - Open Access"],"thesis:degree_name":["Ph. D. in Civil Engineering"],"thesis:institution_name":["Missouri University of Science and Technology"]},"updated_at":"2026-07-24T03:18:26Z"}