A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to environment-friendly building materials, particularly discloses freeze-thaw resistant recycled concrete, and solves the problem that existing recycled concrete is not resistant to freeze thawing. Specifically, the recycled concrete comprises the following raw materials in parts by mass: 480-540 parts of natural aggregate; 460 to 520 parts of recycled aggregate; 380 to 480 parts of cement; 350 to 410 parts of sand; 160 to 200 parts of water absorption sepiolite powder; 1.5 to 6.6 parts of a retarder; the water reducing agent and the retarder are added to promote repair of the recycled aggregate in the recycled concrete and reduce gaps, meanwhile, the added water-absorbing sepiolite powder can be partially filled into cracks of the recycled aggregate to reinforce and block ports of the cracks of the recycled aggregate, and ice crystal precipitation and expansion stress increase of the recycled concrete are slowed down during freezing; therefore, the freeze-thaw resistance of the recycled concrete is improved from the two aspects of the recycled concrete and the prevention of freeze-thaw damage at the same time.
本申请涉及环保建材，具体公开了一种抗冻融的再生混凝土，解决现有再生混凝土不耐冻融的问题；其具体的，再生混凝土包括以下质量份数的原料：天然骨料480~540份；再生骨料460~520份；水泥380~480份；砂350~410份；吸水海泡石粉末160~200份；缓凝剂1.5~6.6份；减水剂2.4~5.6份，本申请中加入减水剂和缓凝剂促进再生混凝土内再生骨料修复、减少空隙，同时加入的吸水海泡石粉末可部分填入再生骨料裂缝，对再生骨料裂缝端口强化封堵，并在冻结时减缓冰晶析出以及再生混凝土膨胀应力增加，由此同时从再生混凝土自身以及阻碍冻融损坏两方面对再生混凝土的抗冻融性进行提升。
The invention relates to environment-friendly building materials, particularly discloses freeze-thaw resistant recycled concrete, and solves the problem that existing recycled concrete is not resistant to freeze thawing. Specifically, the recycled concrete comprises the following raw materials in parts by mass: 480-540 parts of natural aggregate; 460 to 520 parts of recycled aggregate; 380 to 480 parts of cement; 350 to 410 parts of sand; 160 to 200 parts of water absorption sepiolite powder; 1.5 to 6.6 parts of a retarder; the water reducing agent and the retarder are added to promote repair of the recycled aggregate in the recycled concrete and reduce gaps, meanwhile, the added water-absorbing sepiolite powder can be partially filled into cracks of the recycled aggregate to reinforce and block ports of the cracks of the recycled aggregate, and ice crystal precipitation and expansion stress increase of the recycled concrete are slowed down during freezing; therefore, the freeze-thaw resistance of the recycled concrete is improved from the two aspects of the recycled concrete and the prevention of freeze-thaw damage at the same time.
本申请涉及环保建材，具体公开了一种抗冻融的再生混凝土，解决现有再生混凝土不耐冻融的问题；其具体的，再生混凝土包括以下质量份数的原料：天然骨料480~540份；再生骨料460~520份；水泥380~480份；砂350~410份；吸水海泡石粉末160~200份；缓凝剂1.5~6.6份；减水剂2.4~5.6份，本申请中加入减水剂和缓凝剂促进再生混凝土内再生骨料修复、减少空隙，同时加入的吸水海泡石粉末可部分填入再生骨料裂缝，对再生骨料裂缝端口强化封堵，并在冻结时减缓冰晶析出以及再生混凝土膨胀应力增加，由此同时从再生混凝土自身以及阻碍冻融损坏两方面对再生混凝土的抗冻融性进行提升。
Freeze-thaw resistant recycled concrete
一种抗冻融的再生混凝土
ZHANG BIYE (author)
2024-02-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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