Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-loss light-weight high-strength pump concrete and preparation method thereof
The invention discloses low-loss light-weight high-strength pump concrete and a preparation method thereof, and the concrete comprises the following components in parts by weight: 350-450 parts of cement, 170-210 parts of mixing water, 300-350 parts of ceramsite, 100-300 parts of fine sand, 350-450 parts of pottery sand, and 3.6-5.0 parts of an additive, and 80-100 parts of fly ash. wherein the ceramsite is shale ceramsite with the continuous grading of 700 grades, the particle size of the ceramsite is 5-20 mm, the stacking density grade of the ceramsite is 680-700 kg/m3, the apparent densityof the ceramsite is 1420-1450 kg/m3, the water absorption rate of the ceramsite is 5%, and the cylinder compressive strength of the ceramsite is 7.8 MPa; the fineness modulus of the fine sand is 1.6,and the water content of the fine sand is 6%; the particle size of the pottery sand is 350-450 mm and the particle size of the pottery sand is 350-450 mm; and the stacking density of the pottery sandis 680-700 kg/m3. According to the invention, the mix proportion of the gel system and the concrete is optimized, so that the time-dependent loss of the expansion degree of the lightweight high-strength pump concrete is within a reasonable range, and the lightweight high-strength pump concrete can be transported under various transportation conditions; meanwhile, the lightweight high-strength concrete has pumpability and meets the pumping construction requirements of the concrete in engineering.
本发明公开了一种低损失轻质高强泵送混凝土及其制备方法，所述混凝土按照重量份计，包括以下各组分：水泥，350～450，拌合水，170～210；陶粒，300～350，所述陶粒为连续级配为700级的页岩陶粒，粒径为5～20mm，堆积密度等级为680～700kg/m3，表观密度为1420～1450kg/m3，吸水率为5％，筒压强度为7.8MPa；细砂，100～300，所述细砂细度模数为1.6，含水率6％，陶砂，350～450，所述陶砂粒径为3～5mm，堆积密度为680～700kg/m3；外加剂，3.6～5.0；粉煤灰，80～100。本发明通过对凝胶体系及混凝土的配合比进行优化，使得该轻质高强泵送混凝土的扩展度经时损失在合理范围内，使得其在各种运输条件下均能实现运输，同时，该轻质高强混凝土具有可泵送性，满足了混凝土在工程中的泵送施工要求。
Low-loss light-weight high-strength pump concrete and preparation method thereof
The invention discloses low-loss light-weight high-strength pump concrete and a preparation method thereof, and the concrete comprises the following components in parts by weight: 350-450 parts of cement, 170-210 parts of mixing water, 300-350 parts of ceramsite, 100-300 parts of fine sand, 350-450 parts of pottery sand, and 3.6-5.0 parts of an additive, and 80-100 parts of fly ash. wherein the ceramsite is shale ceramsite with the continuous grading of 700 grades, the particle size of the ceramsite is 5-20 mm, the stacking density grade of the ceramsite is 680-700 kg/m3, the apparent densityof the ceramsite is 1420-1450 kg/m3, the water absorption rate of the ceramsite is 5%, and the cylinder compressive strength of the ceramsite is 7.8 MPa; the fineness modulus of the fine sand is 1.6,and the water content of the fine sand is 6%; the particle size of the pottery sand is 350-450 mm and the particle size of the pottery sand is 350-450 mm; and the stacking density of the pottery sandis 680-700 kg/m3. According to the invention, the mix proportion of the gel system and the concrete is optimized, so that the time-dependent loss of the expansion degree of the lightweight high-strength pump concrete is within a reasonable range, and the lightweight high-strength pump concrete can be transported under various transportation conditions; meanwhile, the lightweight high-strength concrete has pumpability and meets the pumping construction requirements of the concrete in engineering.
本发明公开了一种低损失轻质高强泵送混凝土及其制备方法，所述混凝土按照重量份计，包括以下各组分：水泥，350～450，拌合水，170～210；陶粒，300～350，所述陶粒为连续级配为700级的页岩陶粒，粒径为5～20mm，堆积密度等级为680～700kg/m3，表观密度为1420～1450kg/m3，吸水率为5％，筒压强度为7.8MPa；细砂，100～300，所述细砂细度模数为1.6，含水率6％，陶砂，350～450，所述陶砂粒径为3～5mm，堆积密度为680～700kg/m3；外加剂，3.6～5.0；粉煤灰，80～100。本发明通过对凝胶体系及混凝土的配合比进行优化，使得该轻质高强泵送混凝土的扩展度经时损失在合理范围内，使得其在各种运输条件下均能实现运输，同时，该轻质高强混凝土具有可泵送性，满足了混凝土在工程中的泵送施工要求。
Low-loss light-weight high-strength pump concrete and preparation method thereof
一种低损失轻质高强泵送混凝土及其制备方法
WANG CHAO (Autor:in) / ZHU MINTAO (Autor:in) / JIN ZIQING (Autor:in) / SHEN JIANFENG (Autor:in) / LI XIAOTING (Autor:in) / CHEN YIQUN (Autor:in) / LI LINGYU (Autor:in)
08.12.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
High-strength light-weight concrete and preparation method thereof
| Europäisches Patentamt | 2015
Premixed pumping light-weight high-strength concrete mixture and preparation method thereof
| Europäisches Patentamt | 2022
Low-elastic-modulus light-weight high-strength concrete and preparation method thereof
| Europäisches Patentamt | 2024
Large-flow-state light-weight high-strength EPS concrete and preparation method thereof
| Europäisches Patentamt | 2022
Sound-absorbing noise-reducing light-weight high-strength concrete and preparation method thereof
| Europäisches Patentamt | 2024