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A platform for research: civil engineering, architecture and urbanism
Preparation method of machine-made hill sand recycled aggregate concrete and concrete
The invention discloses a machine-made hill sand recycled aggregate concrete preparation method and concrete, which comprises the following steps: separating waste concrete from construction waste as a raw material, and carrying out at least two times of crushing and two times of screening to obtain recycled coarse aggregate and recycled fine aggregate; the machine-made hill sand and recycled aggregate are combined to prepare the machine-made hill sand recycled aggregate concrete, the water absorption rate and the water content of recycled coarse aggregate and recycled fine aggregate are measured firstly, and water supplementing treatment is conducted on the recycled aggregate according to the water absorption rate and the water content; before mixing, the recycled coarse aggregate is in a saturated surface dry state, the recycled fine aggregate is supplemented with additional water, and finally, the mixture is stirred by adopting a method for reinforcing a recycled aggregate interface transition region through secondary stirring, so that the machine-made hill sand recycled aggregate concrete is prepared. The construction waste and the machine-made mountain sand can be effectively utilized, the problems of construction waste accumulation and river sand shortage are effectively solved, and the method has important significance for reducing carbon emission, saving land resources and promoting sustainable development of the construction industry.
本发明公开了一种机制山砂再生骨料混凝土制备方法及混凝土，其通过从建筑垃圾中分离出废弃混凝土作为原材料，经过至少两次破碎和两次筛分获得再生粗骨料和再生细骨料，将机制山砂与再生骨料结合制备机制山砂再生骨料混凝土，先测定再生粗骨料和再生细骨料的吸水率和含水率，并根据吸水率和含水率对再生骨料进行补水处理，在拌合前的再生粗骨料应为饱和面干状态、再生细骨料通过加入额外的水进行补水，最后采用二次搅拌强化再生骨料界面过渡区的方法对拌合物进行搅拌，制得机制山砂再生骨料混凝土。本发明可有效利用建筑垃圾和机制山砂，有效解决了建筑垃圾堆积和河砂短缺的问题，对减少碳排放、节约土地资源以及促进建筑行业的可持续发展具有重要意义。
Preparation method of machine-made hill sand recycled aggregate concrete and concrete
The invention discloses a machine-made hill sand recycled aggregate concrete preparation method and concrete, which comprises the following steps: separating waste concrete from construction waste as a raw material, and carrying out at least two times of crushing and two times of screening to obtain recycled coarse aggregate and recycled fine aggregate; the machine-made hill sand and recycled aggregate are combined to prepare the machine-made hill sand recycled aggregate concrete, the water absorption rate and the water content of recycled coarse aggregate and recycled fine aggregate are measured firstly, and water supplementing treatment is conducted on the recycled aggregate according to the water absorption rate and the water content; before mixing, the recycled coarse aggregate is in a saturated surface dry state, the recycled fine aggregate is supplemented with additional water, and finally, the mixture is stirred by adopting a method for reinforcing a recycled aggregate interface transition region through secondary stirring, so that the machine-made hill sand recycled aggregate concrete is prepared. The construction waste and the machine-made mountain sand can be effectively utilized, the problems of construction waste accumulation and river sand shortage are effectively solved, and the method has important significance for reducing carbon emission, saving land resources and promoting sustainable development of the construction industry.
本发明公开了一种机制山砂再生骨料混凝土制备方法及混凝土，其通过从建筑垃圾中分离出废弃混凝土作为原材料，经过至少两次破碎和两次筛分获得再生粗骨料和再生细骨料，将机制山砂与再生骨料结合制备机制山砂再生骨料混凝土，先测定再生粗骨料和再生细骨料的吸水率和含水率，并根据吸水率和含水率对再生骨料进行补水处理，在拌合前的再生粗骨料应为饱和面干状态、再生细骨料通过加入额外的水进行补水，最后采用二次搅拌强化再生骨料界面过渡区的方法对拌合物进行搅拌，制得机制山砂再生骨料混凝土。本发明可有效利用建筑垃圾和机制山砂，有效解决了建筑垃圾堆积和河砂短缺的问题，对减少碳排放、节约土地资源以及促进建筑行业的可持续发展具有重要意义。
Preparation method of machine-made hill sand recycled aggregate concrete and concrete
一种机制山砂再生骨料混凝土制备方法及混凝土
CHEN HONGNIAO (author) / XU YINGJIE (author) / LI YINGPING (author) / CHEN JING (author)
2024-01-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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