Performance of rubber mortars containing silica coated rubber
This paper investigates the influence of silica coated rubber on the performance of rubber mortars. A classical Stöber sol-gel method is applied to produce a layer of silica coating on rubber particles, which is used to partially replace the fine aggregates in concrete. The effects of the surface-m...
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Consejo Superior de Investigaciones Científicas
2021-05-01
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doaj-bbe2de66ba27424da2e0a969545c8ea62021-06-08T11:26:33ZengConsejo Superior de Investigaciones CientíficasMateriales de Construccion0465-27461988-32262021-05-017134210.3989/mc.2021.11620Performance of rubber mortars containing silica coated rubberJ. Li0P. Chen1H. Cai2Y. Xu3X. Tian4C. Li5L. Cui6School of Civil Engineering and Architecture, Anhui University of Science and TechnologySchool of Civil Engineering and Architecture, Anhui University of Science and Technology - Jitoo UHPC (Shandong) New Material Technology Co., Ltd, Shandong Academician Workstation of Ghani RazaqpurSchool of Civil Engineering and Architecture, Anhui University of Science and TechnologySchool of Civil Engineering and Architecture, Anhui University of Science and TechnologySchool of Civil Engineering and Architecture, Anhui University of Science and TechnologyJitoo UHPC (Shandong) New Material Technology Co., Ltd, Shandong Academician Workstation of Ghani RazaqpurSchool of Civil Engineering and Architecture, Anhui University of Science and Technology This paper investigates the influence of silica coated rubber on the performance of rubber mortars. A classical Stöber sol-gel method is applied to produce a layer of silica coating on rubber particles, which is used to partially replace the fine aggregates in concrete. The effects of the surface-modified rubber particles on the flowability, mechanical strength, capillary water absorption rate, and microstructure of mortars are examined. The results show that the silica coating on the rubber particles reduces the contact angle between the rubber particles from 120° to 103° (i.e., by 17°) and changes the hydrophobic properties from strong hydrophobicity to weak hydrophobicity. The mechanical strengths of mortars are significantly improved by the incorporation of surface-modified rubber particles, i.e., from 41.60% to 44.86% (compressive strength) and from 7.80% to 26.28% (flexural strength). In addition, the incorporation of surface modified rubber particles increases the density of the mortar’s microstructure and enhances the interfaces with its surrounding pastes. http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2315MortarWaste treatmentMechanical propertiesCharacterizationMicrostructure |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
J. Li P. Chen H. Cai Y. Xu X. Tian C. Li L. Cui |
spellingShingle |
J. Li P. Chen H. Cai Y. Xu X. Tian C. Li L. Cui Performance of rubber mortars containing silica coated rubber Materiales de Construccion Mortar Waste treatment Mechanical properties Characterization Microstructure |
author_facet |
J. Li P. Chen H. Cai Y. Xu X. Tian C. Li L. Cui |
author_sort |
J. Li |
title |
Performance of rubber mortars containing silica coated rubber |
title_short |
Performance of rubber mortars containing silica coated rubber |
title_full |
Performance of rubber mortars containing silica coated rubber |
title_fullStr |
Performance of rubber mortars containing silica coated rubber |
title_full_unstemmed |
Performance of rubber mortars containing silica coated rubber |
title_sort |
performance of rubber mortars containing silica coated rubber |
publisher |
Consejo Superior de Investigaciones Científicas |
series |
Materiales de Construccion |
issn |
0465-2746 1988-3226 |
publishDate |
2021-05-01 |
description |
This paper investigates the influence of silica coated rubber on the performance of rubber mortars. A classical Stöber sol-gel method is applied to produce a layer of silica coating on rubber particles, which is used to partially replace the fine aggregates in concrete. The effects of the surface-modified rubber particles on the flowability, mechanical strength, capillary water absorption rate, and microstructure of mortars are examined. The results show that the silica coating on the rubber particles reduces the contact angle between the rubber particles from 120° to 103° (i.e., by 17°) and changes the hydrophobic properties from strong hydrophobicity to weak hydrophobicity. The mechanical strengths of mortars are significantly improved by the incorporation of surface-modified rubber particles, i.e., from 41.60% to 44.86% (compressive strength) and from 7.80% to 26.28% (flexural strength). In addition, the incorporation of surface modified rubber particles increases the density of the mortar’s microstructure and enhances the interfaces with its surrounding pastes.
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topic |
Mortar Waste treatment Mechanical properties Characterization Microstructure |
url |
http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2315 |
work_keys_str_mv |
AT jli performanceofrubbermortarscontainingsilicacoatedrubber AT pchen performanceofrubbermortarscontainingsilicacoatedrubber AT hcai performanceofrubbermortarscontainingsilicacoatedrubber AT yxu performanceofrubbermortarscontainingsilicacoatedrubber AT xtian performanceofrubbermortarscontainingsilicacoatedrubber AT cli performanceofrubbermortarscontainingsilicacoatedrubber AT lcui performanceofrubbermortarscontainingsilicacoatedrubber |
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1721389752007000064 |