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Pumping structure lightweight aggregate concrete and preparation method thereof
The invention discloses pumping structure lightweight aggregate concrete. The lightweight aggregate concrete comprises the following components in parts by weight: 299-362 parts of cement, 69-81 partsof fly ash, 85-97 parts of mineral powder, 710-827 parts of fine aggregate, 496-635 parts of coarse aggregate, 170-210 parts of water and 8.5-12.4 parts of an additive. The strength grades of the prepared lightweight aggregate concrete reach LC30 to LC50, the strength corresponding to LC30, LC40 and LC50 reaches 36.5 MPa, 47.9 MPa and 53.5 MPa respectively and reaches 122%, 120% and 107% of the design strength respectively, and the prepared concrete is good in out-of-machine state, low in water absorption, low in slump to 220, low in 1h slump to 160, and good in workability, and meets pumpingrequirements.
一种泵送结构轻骨料混凝土，所述轻骨料混凝土包括如下重量份数的组分：水泥299‑362、粉煤灰69‑81份、矿粉85‑97份、细骨料710‑827份、粗骨料496‑635份、水170‑210份及外加剂8.5‑12.4份。本发明制备的轻骨料混凝土强度等级达到了LC30至LC50，LC30、LC40及LC50强度等级对应的强度分别高达36.5 MPa、47.9 MPa、53.5MPa，分别达到设计强度的122%、120%和107%，制备的混凝土出机状态良好，吸水率低，坍落度低至220，1h坍落度低至160，和易性良好，均符合泵送要求。
Pumping structure lightweight aggregate concrete and preparation method thereof
The invention discloses pumping structure lightweight aggregate concrete. The lightweight aggregate concrete comprises the following components in parts by weight: 299-362 parts of cement, 69-81 partsof fly ash, 85-97 parts of mineral powder, 710-827 parts of fine aggregate, 496-635 parts of coarse aggregate, 170-210 parts of water and 8.5-12.4 parts of an additive. The strength grades of the prepared lightweight aggregate concrete reach LC30 to LC50, the strength corresponding to LC30, LC40 and LC50 reaches 36.5 MPa, 47.9 MPa and 53.5 MPa respectively and reaches 122%, 120% and 107% of the design strength respectively, and the prepared concrete is good in out-of-machine state, low in water absorption, low in slump to 220, low in 1h slump to 160, and good in workability, and meets pumpingrequirements.
一种泵送结构轻骨料混凝土，所述轻骨料混凝土包括如下重量份数的组分：水泥299‑362、粉煤灰69‑81份、矿粉85‑97份、细骨料710‑827份、粗骨料496‑635份、水170‑210份及外加剂8.5‑12.4份。本发明制备的轻骨料混凝土强度等级达到了LC30至LC50，LC30、LC40及LC50强度等级对应的强度分别高达36.5 MPa、47.9 MPa、53.5MPa，分别达到设计强度的122%、120%和107%，制备的混凝土出机状态良好，吸水率低，坍落度低至220，1h坍落度低至160，和易性良好，均符合泵送要求。
Pumping structure lightweight aggregate concrete and preparation method thereof
一种泵送结构轻骨料混凝土及其制备方法
WANG GANG (author) / YANG JIANNING (author) / ZHOU JINJIN (author) / DU XUEGANG (author) / XI XUELI (author) / WEI GONGLEI (author) / SONG LONG (author) / LIU YAWEN (author) / WANG SHAOZE (author) / WANG XIAOMING (author)
2021-02-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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