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High-pressure-resistance silica fume pervious concrete and preparation method thereof
The invention discloses high-pressure-resistance silica fume pervious concrete. The silica fume pervious concrete is composed of the following materials in parts by weight: 15-25 parts of silica fume, 120-140 parts of water, 364-735 parts of Portland cement, 25-75 parts of natural zeolite powder, 1.2-3 parts of a retarding high-range water-reducing agent, 1428 parts of coarse aggregate, 22-45 parts of ground fly ash and 5-20 parts of a plastic retaining agent. According to the preparation method of the high-pressure-resistance silica fume pervious concrete, silica fume is added into a traditional pervious concrete material, the silica fume reacts with a hydration product to generate gel, so that the pressure resistance, fracture resistance, corrosion resistance, impact resistance and wear resistance of the pervious concrete are remarkably improved; and meanwhile, natural zeolite powder is added into the pervious concrete, active silicon and active aluminum contained in the zeolite crystal structure are subjected to secondary reaction with Ca(OH)2 provided in the cement hydration process to generate the C-S-H gel and the calcium silicate hydrate, so that the concrete is denser, the strength is improved, and thus the pervious concrete obtains the high pressure resistance under a condition of having the water permeability.
本发明公开了一种高抗压性硅灰透水混凝土，由以下材料的重量份的成分组成：硅灰15‑25份、水120‑140份、硅酸盐水泥364‑735份、天然沸石粉25‑75份、缓凝高效减水剂1.2‑3份、粗骨料1428份、磨细粉煤灰22‑45份和保塑剂5‑20份。该高抗压性硅灰透水混凝土的制备方法，通过向传统透水混凝土材料内添加硅灰，硅灰与水化产物反应产生凝胶体，使得透水混凝土的抗压、抗折、防腐、抗冲击及耐磨性能得到显著提升，同时向透水混凝土中添加天然沸石粉，沸石晶体结构中包藏的活性硅和活性铝与水泥水化过程中提供的Ca(OH)2发生二次反应，生成C—S—H凝胶及硅酸钙水化物，使混凝土更加密实，强度提高，从而使得透水混凝土在兼具透水性的情况下获得较高的抗压性。
High-pressure-resistance silica fume pervious concrete and preparation method thereof
The invention discloses high-pressure-resistance silica fume pervious concrete. The silica fume pervious concrete is composed of the following materials in parts by weight: 15-25 parts of silica fume, 120-140 parts of water, 364-735 parts of Portland cement, 25-75 parts of natural zeolite powder, 1.2-3 parts of a retarding high-range water-reducing agent, 1428 parts of coarse aggregate, 22-45 parts of ground fly ash and 5-20 parts of a plastic retaining agent. According to the preparation method of the high-pressure-resistance silica fume pervious concrete, silica fume is added into a traditional pervious concrete material, the silica fume reacts with a hydration product to generate gel, so that the pressure resistance, fracture resistance, corrosion resistance, impact resistance and wear resistance of the pervious concrete are remarkably improved; and meanwhile, natural zeolite powder is added into the pervious concrete, active silicon and active aluminum contained in the zeolite crystal structure are subjected to secondary reaction with Ca(OH)2 provided in the cement hydration process to generate the C-S-H gel and the calcium silicate hydrate, so that the concrete is denser, the strength is improved, and thus the pervious concrete obtains the high pressure resistance under a condition of having the water permeability.
本发明公开了一种高抗压性硅灰透水混凝土，由以下材料的重量份的成分组成：硅灰15‑25份、水120‑140份、硅酸盐水泥364‑735份、天然沸石粉25‑75份、缓凝高效减水剂1.2‑3份、粗骨料1428份、磨细粉煤灰22‑45份和保塑剂5‑20份。该高抗压性硅灰透水混凝土的制备方法，通过向传统透水混凝土材料内添加硅灰，硅灰与水化产物反应产生凝胶体，使得透水混凝土的抗压、抗折、防腐、抗冲击及耐磨性能得到显著提升，同时向透水混凝土中添加天然沸石粉，沸石晶体结构中包藏的活性硅和活性铝与水泥水化过程中提供的Ca(OH)2发生二次反应，生成C—S—H凝胶及硅酸钙水化物，使混凝土更加密实，强度提高，从而使得透水混凝土在兼具透水性的情况下获得较高的抗压性。
High-pressure-resistance silica fume pervious concrete and preparation method thereof
一种高抗压性硅灰透水混凝土及其制备方法
SHEN YU (author) / WANG WANGNING (author) / BIAN LIBO (author) / WU RUIDONG (author) / CAI XIN (author)
2021-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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