A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
LOW-SHRINKAGE ALKALI-ACTIVATED DRY MIX REPAIR MORTAR
A dry-mix, OPC-free,alkali-activated repair mortar includes a base material selected from ground granulated blast furnace slag, fly ash, or a mixture thereof in an amount from approximately 32 weight percent to approximately 37 weight percent. Metakaolin is provided in an amount from approximately 3 weight percent to approximately 8 weight percent. As an alkali activator, modulated potassium silicate is used, the potassium silicate having been modified (by KOH) such that a molar ratio of K 2O to SiO 2 ranges from approximately 1.8 to 2.2. A filler is used in an amount from approximately 50 weight percent to approximately 54 weight percent. The drying shrinkage of the repair mortar is less than or equal to approximately 0.06% and the bond strength of the repair mortar is greater than or equal to approximately 0.5 MPa, the acid resistance measured by a weight loss after 28 days of acid exposure is less than or equal to approximately 3.4 %, and the setting time of the repair mortar is greater than or equal to approximately 60 minutes.
本发明提供一种具有低干燥收缩率、无添加普通硅酸盐水泥的修补砂浆，其包含相当高比例的废料。碱活化干混修补砂浆包括一种重量百分比在32％到37％之间的基底材料，选自研磨的粒状高炉矿渣、粉煤灰或其混合物。偏高岭土重量百分比在3％到8％之间。使用了改性的硅酸钾作为碱活化剂，该改性硅酸钾已被氢氧化钾改性，使K2O与SiO2的摩尔比介于1.8到2.2之间。填充剂的用量为重量百分比在50％到54％之间。修补砂浆的干燥收缩率小于或等于0.06％及粘结强度大于或等于0.5MPa，于酸暴露28天后通过计算重量损失所测得的耐酸性小于或等于3.4％，且该修补砂浆的凝固时间大于或等于60分钟。
LOW-SHRINKAGE ALKALI-ACTIVATED DRY MIX REPAIR MORTAR
A dry-mix, OPC-free,alkali-activated repair mortar includes a base material selected from ground granulated blast furnace slag, fly ash, or a mixture thereof in an amount from approximately 32 weight percent to approximately 37 weight percent. Metakaolin is provided in an amount from approximately 3 weight percent to approximately 8 weight percent. As an alkali activator, modulated potassium silicate is used, the potassium silicate having been modified (by KOH) such that a molar ratio of K 2O to SiO 2 ranges from approximately 1.8 to 2.2. A filler is used in an amount from approximately 50 weight percent to approximately 54 weight percent. The drying shrinkage of the repair mortar is less than or equal to approximately 0.06% and the bond strength of the repair mortar is greater than or equal to approximately 0.5 MPa, the acid resistance measured by a weight loss after 28 days of acid exposure is less than or equal to approximately 3.4 %, and the setting time of the repair mortar is greater than or equal to approximately 60 minutes.
本发明提供一种具有低干燥收缩率、无添加普通硅酸盐水泥的修补砂浆，其包含相当高比例的废料。碱活化干混修补砂浆包括一种重量百分比在32％到37％之间的基底材料，选自研磨的粒状高炉矿渣、粉煤灰或其混合物。偏高岭土重量百分比在3％到8％之间。使用了改性的硅酸钾作为碱活化剂，该改性硅酸钾已被氢氧化钾改性，使K2O与SiO2的摩尔比介于1.8到2.2之间。填充剂的用量为重量百分比在50％到54％之间。修补砂浆的干燥收缩率小于或等于0.06％及粘结强度大于或等于0.5MPa，于酸暴露28天后通过计算重量损失所测得的耐酸性小于或等于3.4％，且该修补砂浆的凝固时间大于或等于60分钟。
LOW-SHRINKAGE ALKALI-ACTIVATED DRY MIX REPAIR MORTAR
具低收缩率的碱活化干混修补砂浆
ZHOU SONGGANG (author) / GUAN XIWEN (author) / LIU SHIYIN (author) / SHEN WENLONG (author) / CHEN WEIBANG (author)
2021-06-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Shrinkage Characteristics of Alkali-Activated Slag Mortar with SAP
| Springer Verlag | 2016
Alkali activated slag mortar. Mechanical strengths, shrinkage and structure
| UB Braunschweig | 1990