Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Super-early-strength high-strength concrete and preparation method thereof
The invention relates to super-early-strength high-strength concrete, and relates to the technical field of building materials. The super-early-strength high-strength concrete comprises the following components by weight: 770-790 parts of a cementing material, 650-670 parts of coarse aggregate, 650-670 parts of fine aggregate, 124-130 parts of an admixture, 170-175 parts of water, and 1-2 parts of a shrinkage compensation agent, wherein the admixture is prepared from the following components in parts by weight: 0.02 to 0.03 part of an early strength component, 0.10 to 0.12 part of a delayed coagulation component, 0.05 to 0.07 part of an air entraining and water retention component and 0.80 to 0.82 part of a water reducing component. The preparation method of the super-early-strength high-strength concrete comprises the steps of uniformly stirring the coarse aggregate, the fine aggregate and the cementing material; adding the admixture and the shrinkage compensation agent, and uniformly stirring; adding the water and stirring until slurry appears; and continuously stirring uniformly to obtain the super-early-strength high-strength concrete. The 3h compressive strength of the prepared super-early-strength high-strength concrete is greater than or equal to 55 MPa, the 5h compressive strength is greater than or equal to 65 MPa, the 1d compressive strength is greater than or equal to 80 MPa, and the problems that common concrete is long in hardening time and slow in strength growth are solved.
本申请涉及一种超早强高强混凝土，涉及建筑材料技术领域，按重量份计，该超早强高强混凝土包括：770～790份胶凝材料、650～670份粗集料、650～670份细集料、124～130份外加剂、170～175份水、1～2份补偿收缩剂；外加剂包括0.02～0.03份早强组分、0.10～0.12份缓凝组分、0.05～0.07份引气保水组分及0.80～0.82份减水组分。超早强高强混凝土的制备方法包括以下步骤：将所述粗集料、细集料和胶凝材料搅拌均匀；加入所述外加剂与所述补偿收缩剂搅，搅拌均匀；加入所述水搅拌，直至出现浆体；继续搅拌均匀，得到所述超早强高强混凝土。本申请实施例制备的超早强高强混凝土3h抗压强度≥55MPa、5h抗压强度≥65MPa、1d抗压强度≥80MPa，解决了普通混凝土硬化时间长、强度生长慢的问题。
Super-early-strength high-strength concrete and preparation method thereof
The invention relates to super-early-strength high-strength concrete, and relates to the technical field of building materials. The super-early-strength high-strength concrete comprises the following components by weight: 770-790 parts of a cementing material, 650-670 parts of coarse aggregate, 650-670 parts of fine aggregate, 124-130 parts of an admixture, 170-175 parts of water, and 1-2 parts of a shrinkage compensation agent, wherein the admixture is prepared from the following components in parts by weight: 0.02 to 0.03 part of an early strength component, 0.10 to 0.12 part of a delayed coagulation component, 0.05 to 0.07 part of an air entraining and water retention component and 0.80 to 0.82 part of a water reducing component. The preparation method of the super-early-strength high-strength concrete comprises the steps of uniformly stirring the coarse aggregate, the fine aggregate and the cementing material; adding the admixture and the shrinkage compensation agent, and uniformly stirring; adding the water and stirring until slurry appears; and continuously stirring uniformly to obtain the super-early-strength high-strength concrete. The 3h compressive strength of the prepared super-early-strength high-strength concrete is greater than or equal to 55 MPa, the 5h compressive strength is greater than or equal to 65 MPa, the 1d compressive strength is greater than or equal to 80 MPa, and the problems that common concrete is long in hardening time and slow in strength growth are solved.
本申请涉及一种超早强高强混凝土，涉及建筑材料技术领域，按重量份计，该超早强高强混凝土包括：770～790份胶凝材料、650～670份粗集料、650～670份细集料、124～130份外加剂、170～175份水、1～2份补偿收缩剂；外加剂包括0.02～0.03份早强组分、0.10～0.12份缓凝组分、0.05～0.07份引气保水组分及0.80～0.82份减水组分。超早强高强混凝土的制备方法包括以下步骤：将所述粗集料、细集料和胶凝材料搅拌均匀；加入所述外加剂与所述补偿收缩剂搅，搅拌均匀；加入所述水搅拌，直至出现浆体；继续搅拌均匀，得到所述超早强高强混凝土。本申请实施例制备的超早强高强混凝土3h抗压强度≥55MPa、5h抗压强度≥65MPa、1d抗压强度≥80MPa，解决了普通混凝土硬化时间长、强度生长慢的问题。
Super-early-strength high-strength concrete and preparation method thereof
一种超早强高强混凝土及其制备方法
OU CHANGHONG (Autor:in) / CHEN KAIQIAO (Autor:in) / DONG ZHICHENG (Autor:in) / WEN PEI (Autor:in) / CHEN MIN (Autor:in) / DU CAO (Autor:in) / TAN JIAN (Autor:in) / WEI ZHI (Autor:in) / YUAN WENHAI (Autor:in) / LI YAPENG (Autor:in)
14.09.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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