Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of rubber co-doped nano silicon dioxide modified recycled concrete
The invention provides a preparation method of rubber co-doped nano silicon dioxide modified recycled concrete. The recycled concrete is composed of cement (P.O42.5 ordinary Portland cement produced by the Huaxin Cement Co.,Ltd), recycled coarse aggregate (obtained by crushing waste roads), fine aggregate (river sand for test with the fineness modulus of 2.6 and the density of 2.64 g/cm<3> obtained by drying and screening Wuhan natural river sand), rubber particles (rubber powder of 80-100 meshes), nano-silica (20 nm, hydrophilic type) and an additive (a water reducing agent with a water-reducing rate of 26%). The recycled concrete is recycled aggregate obtained by washing, crushing and screening waste concrete and then mixing the waste concrete according to a certain proportion, the recycled aggregate partially or completely replaces natural aggregate to be reconfigured to form new concrete, rubber is a tough material and has the advantages of high elasticity, wear resistance, durability, plasticity and the like, the density of the recycled concrete doped with the rubber particles is reduced, the wear resistance and durability are remarkably improved, meanwhile, a large amount of building waste and waste rubber are consumed, and resource utilization of the building waste and the waste rubber is effectively achieved.
本发明提供了一种橡胶复掺纳米二氧化硅改性再生混凝土的制备方法，上述再生混凝土由如下组成：水泥(华新水泥公司生产的P.O42.5普通硅酸盐水泥)，再生粗骨料(由废弃道路破碎得到)，细骨料(武汉天然河砂，烘干后筛分，试验所用河砂细度模数为2.6，密度为2.64g/cm3)，橡胶粒(80，100目颗粒的橡胶粉)，纳米二氧化硅(20nm，亲水型)，外加剂(26％减水率的减水剂)。再生混凝土是将废弃混凝土经过冲洗、破碎、筛分然后按一定比例混合后得到的再生骨料，部分或全部替代天然骨料重新配置形成的新混凝土，橡胶属于韧性材料，具有高弹、耐磨、耐久及可塑等众多优点，掺入橡胶颗粒的再生混凝土密度会有所降低，耐磨、耐久性能得到显著提高，同时又消耗了大量建筑废弃物和废橡胶，有效的实现了两者的资源化利用。
Preparation method of rubber co-doped nano silicon dioxide modified recycled concrete
The invention provides a preparation method of rubber co-doped nano silicon dioxide modified recycled concrete. The recycled concrete is composed of cement (P.O42.5 ordinary Portland cement produced by the Huaxin Cement Co.,Ltd), recycled coarse aggregate (obtained by crushing waste roads), fine aggregate (river sand for test with the fineness modulus of 2.6 and the density of 2.64 g/cm<3> obtained by drying and screening Wuhan natural river sand), rubber particles (rubber powder of 80-100 meshes), nano-silica (20 nm, hydrophilic type) and an additive (a water reducing agent with a water-reducing rate of 26%). The recycled concrete is recycled aggregate obtained by washing, crushing and screening waste concrete and then mixing the waste concrete according to a certain proportion, the recycled aggregate partially or completely replaces natural aggregate to be reconfigured to form new concrete, rubber is a tough material and has the advantages of high elasticity, wear resistance, durability, plasticity and the like, the density of the recycled concrete doped with the rubber particles is reduced, the wear resistance and durability are remarkably improved, meanwhile, a large amount of building waste and waste rubber are consumed, and resource utilization of the building waste and the waste rubber is effectively achieved.
本发明提供了一种橡胶复掺纳米二氧化硅改性再生混凝土的制备方法，上述再生混凝土由如下组成：水泥(华新水泥公司生产的P.O42.5普通硅酸盐水泥)，再生粗骨料(由废弃道路破碎得到)，细骨料(武汉天然河砂，烘干后筛分，试验所用河砂细度模数为2.6，密度为2.64g/cm3)，橡胶粒(80，100目颗粒的橡胶粉)，纳米二氧化硅(20nm，亲水型)，外加剂(26％减水率的减水剂)。再生混凝土是将废弃混凝土经过冲洗、破碎、筛分然后按一定比例混合后得到的再生骨料，部分或全部替代天然骨料重新配置形成的新混凝土，橡胶属于韧性材料，具有高弹、耐磨、耐久及可塑等众多优点，掺入橡胶颗粒的再生混凝土密度会有所降低，耐磨、耐久性能得到显著提高，同时又消耗了大量建筑废弃物和废橡胶，有效的实现了两者的资源化利用。
Preparation method of rubber co-doped nano silicon dioxide modified recycled concrete
一种橡胶复掺纳米二氧化硅改性再生混凝土的制备方法
LYU KANGQI (Autor:in)
29.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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