Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance enhancing method of recycled aggregate concrete
The invention relates to recycled aggregate concrete, in particular to a performance enhancing method of the recycled aggregate concrete. The preparation raw materials of the recycled aggregate concrete comprise water, ordinary Portland cement, a mineral admixture, natural fine aggregate, recycled aggregate, an expanding agent and a water reducing agent, the recycled aggregate concrete is prepared through a TM three-time stirring process, the recycled aggregate comprises recycled coarse aggregate and recycled fine aggregate, and the recycled coarse aggregate 100% replaces the natural coarse aggregate; the recycled aggregate is subjected to water pre-wetting treatment before the concrete is prepared, so that the recycled aggregate reaches a saturated surface dry state during preparation. The pre-wetting process reduces the water absorption of the recycled aggregate and the water competition of cement hydration, the MgO expanding agent is doped for hydration reaction to prolong the water release process of the recycled aggregate, the hydration product fills pores to improve the compactness, and finally, the TM three-time stirring process further improves the interface transition area between the set cement and the recycled aggregate, so that the strength of the recycled aggregate is improved. The performance of the recycled aggregate concrete is improved.
本发明涉及一种再生骨料混凝土，尤其涉及一种再生骨料混凝土的性能增强方法。所述再生骨料混凝土的制备原料包括水、普通硅酸盐水泥、矿物掺合料、天然细骨料、再生骨料、膨胀剂和减水剂，通过TM三次搅拌工艺制备，所述再生骨料包括再生粗骨料和再生细骨料，其中再生粗骨料100％替代天然粗骨料；所述再生骨料在制备混凝土前经过水预湿处理，在制备时使其达到饱和面干状态。本发明通过预湿工艺减少再生骨料吸水与水泥水化的水分竞争，通过掺入MgO膨胀剂水化反应延长再生骨料的释水进程，水化产物填充孔隙提高密实度，最后通过TM三次搅拌工艺进一步改善水泥石与再生骨料间的界面过渡区，提高再生骨料混凝土性能。
Performance enhancing method of recycled aggregate concrete
The invention relates to recycled aggregate concrete, in particular to a performance enhancing method of the recycled aggregate concrete. The preparation raw materials of the recycled aggregate concrete comprise water, ordinary Portland cement, a mineral admixture, natural fine aggregate, recycled aggregate, an expanding agent and a water reducing agent, the recycled aggregate concrete is prepared through a TM three-time stirring process, the recycled aggregate comprises recycled coarse aggregate and recycled fine aggregate, and the recycled coarse aggregate 100% replaces the natural coarse aggregate; the recycled aggregate is subjected to water pre-wetting treatment before the concrete is prepared, so that the recycled aggregate reaches a saturated surface dry state during preparation. The pre-wetting process reduces the water absorption of the recycled aggregate and the water competition of cement hydration, the MgO expanding agent is doped for hydration reaction to prolong the water release process of the recycled aggregate, the hydration product fills pores to improve the compactness, and finally, the TM three-time stirring process further improves the interface transition area between the set cement and the recycled aggregate, so that the strength of the recycled aggregate is improved. The performance of the recycled aggregate concrete is improved.
本发明涉及一种再生骨料混凝土，尤其涉及一种再生骨料混凝土的性能增强方法。所述再生骨料混凝土的制备原料包括水、普通硅酸盐水泥、矿物掺合料、天然细骨料、再生骨料、膨胀剂和减水剂，通过TM三次搅拌工艺制备，所述再生骨料包括再生粗骨料和再生细骨料，其中再生粗骨料100％替代天然粗骨料；所述再生骨料在制备混凝土前经过水预湿处理，在制备时使其达到饱和面干状态。本发明通过预湿工艺减少再生骨料吸水与水泥水化的水分竞争，通过掺入MgO膨胀剂水化反应延长再生骨料的释水进程，水化产物填充孔隙提高密实度，最后通过TM三次搅拌工艺进一步改善水泥石与再生骨料间的界面过渡区，提高再生骨料混凝土性能。
Performance enhancing method of recycled aggregate concrete
一种再生骨料混凝土的性能增强方法
CHEN SONGHE (Autor:in) / ZHOU JIE (Autor:in) / CHEN CHENGXIN (Autor:in) / LIU XIANJIN (Autor:in) / ZHANG JIANXIONG (Autor:in) / LIN JING (Autor:in)
05.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Recycled aggregate concrete performance improvement method
| Europäisches Patentamt | 2015
Performance of recycled aggregate concrete
| British Library Conference Proceedings | 2005
Enhancing the Performance of Recycled Aggregate Concrete Using Micronized Biomass Silica
| Springer Verlag | 2015
| Springer Verlag | 2017