Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a low-brittleness cement-based cementing material. The preparation method comprises the following steps: adding water into calcium aluminate cement, sand and a superplasticizeraccounting for 0.1-10% of the mass of the calcium aluminate cement dry powder, stirring, molding, and carrying out steam curing or hot water curing at 50-100 DEG C under a relative humidity of 70-100% for no more than 48 hours. According to the invention, the low-brittleness cement-based cementing material test piece obtained by using the unconventional method has the breaking strength of greaterthan 20 MPa, the compressive strength of greater than 60 MPa and the breaking pressure ratio of greater than 0.2; and compared with the traditional calcium aluminate cement-based cementing material,the low-brittleness cement-based cementing material of the invention has the advantages that the toughness is good and the application range is wide without being reinforced by fiber reinforcing materials and the like.
一种低脆性水泥基胶凝材料，包括如下原料：铝酸钙水泥、砂和占铝酸钙水泥干粉质量0.1～10％的高效减水剂，经加水搅拌、成型后于温度为50～100℃、相对湿度为70～100％的条件下蒸汽养护或热水养护而成，养护时间不超过48h。利用该非常规方法得到的低脆性水泥基胶凝材料试件，其抗折强度大于20MPa、抗压强度大于60MPa，折压比大于0.2，相较于传统的铝酸钙水泥基胶凝材料而言，其不需要通过纤维增强材料等进行增强，而得到了较好的韧性，应用范围更为广泛。
The invention discloses a low-brittleness cement-based cementing material. The preparation method comprises the following steps: adding water into calcium aluminate cement, sand and a superplasticizeraccounting for 0.1-10% of the mass of the calcium aluminate cement dry powder, stirring, molding, and carrying out steam curing or hot water curing at 50-100 DEG C under a relative humidity of 70-100% for no more than 48 hours. According to the invention, the low-brittleness cement-based cementing material test piece obtained by using the unconventional method has the breaking strength of greaterthan 20 MPa, the compressive strength of greater than 60 MPa and the breaking pressure ratio of greater than 0.2; and compared with the traditional calcium aluminate cement-based cementing material,the low-brittleness cement-based cementing material of the invention has the advantages that the toughness is good and the application range is wide without being reinforced by fiber reinforcing materials and the like.
一种低脆性水泥基胶凝材料，包括如下原料：铝酸钙水泥、砂和占铝酸钙水泥干粉质量0.1～10％的高效减水剂，经加水搅拌、成型后于温度为50～100℃、相对湿度为70～100％的条件下蒸汽养护或热水养护而成，养护时间不超过48h。利用该非常规方法得到的低脆性水泥基胶凝材料试件，其抗折强度大于20MPa、抗压强度大于60MPa，折压比大于0.2，相较于传统的铝酸钙水泥基胶凝材料而言，其不需要通过纤维增强材料等进行增强，而得到了较好的韧性，应用范围更为广泛。
| Europäisches Patentamt | 2020
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