Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation process of stone-like PC brick
A preparation process of a stone-like PC brick belongs to the field of building materials, and adopts the specific scheme that the preparation process comprises the following steps: 1, uniformly stirring color sand, stone powder, cement, slag powder, silica fume and a powdery additive, adding water, and uniformly stirring to obtain a surface material; 2, mixing cement, sand, broken stone, stone chips, stone powder, slag powder and fly ash, and uniformly stirring to obtain a backing material; 3, firstly distributing the backing material, and enabling a bottom die to vibrate in the backing material distribution period; and after the backing material is distributed, pre-pressing the backing material by an upper mold, then distributing the surface material, enabling the upper mold to vibrate during the surface material distribution period, and then obtaining the stone-like PC brick through pressure molding and demolding. According to the stone-like PC brick prepared by the preparation process, the final compressive strength reaches 80 MPa or above, the breaking strength reaches 7.5 MPa or above, freezing and thawing cycles are performed for 50 times in severe cold regions, the strengthloss is not more than 8%, the water absorption rate is within 3.5%, the volume weight is 2450 kg/m<3>, and the pendulum damping is 70 or above.
一种仿石材PC砖的制备工艺，属于建筑材料领域，具体方案包括以下步骤：步骤一：将彩砂、石粉、水泥、矿渣粉、硅灰、粉状外加剂搅拌均匀，加入水再搅拌均匀，得到面料；步骤二：将水泥、砂、碎石、石屑、石粉、矿渣粉、粉煤灰混合后搅拌均匀得到底料；步骤三：先布入底料，底模在布底料期间震动；底料布完后，上模预压底料，再布入面料，上模在布面料期间震动，然后加压成型，脱模，得到仿石材PC砖。利用本发明的制备工艺制备的仿石材PC砖，最终抗压强度达到80MPa以上，抗折强度达到7.5MPa以上，严寒地区冻融循环50次，强度损失不大于8％，吸水率在3.5％以内，容重在2450kg/m3，摆式阻尼在70以上。
Preparation process of stone-like PC brick
A preparation process of a stone-like PC brick belongs to the field of building materials, and adopts the specific scheme that the preparation process comprises the following steps: 1, uniformly stirring color sand, stone powder, cement, slag powder, silica fume and a powdery additive, adding water, and uniformly stirring to obtain a surface material; 2, mixing cement, sand, broken stone, stone chips, stone powder, slag powder and fly ash, and uniformly stirring to obtain a backing material; 3, firstly distributing the backing material, and enabling a bottom die to vibrate in the backing material distribution period; and after the backing material is distributed, pre-pressing the backing material by an upper mold, then distributing the surface material, enabling the upper mold to vibrate during the surface material distribution period, and then obtaining the stone-like PC brick through pressure molding and demolding. According to the stone-like PC brick prepared by the preparation process, the final compressive strength reaches 80 MPa or above, the breaking strength reaches 7.5 MPa or above, freezing and thawing cycles are performed for 50 times in severe cold regions, the strengthloss is not more than 8%, the water absorption rate is within 3.5%, the volume weight is 2450 kg/m<3>, and the pendulum damping is 70 or above.
一种仿石材PC砖的制备工艺，属于建筑材料领域，具体方案包括以下步骤：步骤一：将彩砂、石粉、水泥、矿渣粉、硅灰、粉状外加剂搅拌均匀，加入水再搅拌均匀，得到面料；步骤二：将水泥、砂、碎石、石屑、石粉、矿渣粉、粉煤灰混合后搅拌均匀得到底料；步骤三：先布入底料，底模在布底料期间震动；底料布完后，上模预压底料，再布入面料，上模在布面料期间震动，然后加压成型，脱模，得到仿石材PC砖。利用本发明的制备工艺制备的仿石材PC砖，最终抗压强度达到80MPa以上，抗折强度达到7.5MPa以上，严寒地区冻融循环50次，强度损失不大于8％，吸水率在3.5％以内，容重在2450kg/m3，摆式阻尼在70以上。
Preparation process of stone-like PC brick
一种仿石材PC砖的制备工艺
JIANG ZHONGJUN (Autor:in) / HE DAN (Autor:in) / LIU TAO (Autor:in) / WEI HANCHAO (Autor:in) / HE YIBO (Autor:in)
16.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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