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A platform for research: civil engineering, architecture and urbanism
Ultra-low elastic modulus, high ultimate tensile value and high-strength artificial sand concrete
The invention discloses ultra-low elastic modulus, high ultimate tensile value and high-strength artificial sand concrete. The concrete is prepared from the following raw materials in parts by weight:water, cement, fly ash, feldspar quartz sandstone coarse aggregate, feldspar quartz sandstone fine aggregate, a water reducing agent and an air entraining agent. Through a large number of scientifictests and optimization of materials, it is finally determined that the feldspar quartz sandstone aggregate is adopted for preparing the concrete, and the high-strength low-elastic-modulus concrete issuccessfully prepared. Through actual measurement, the strength of the prepared high-strength low-elastic modulus high-limit tensile concrete exceeds C50, the elastic modulus does not exceed 2.0*10<4>MPa, and the limit tensile value exceeds 1.5*10<4>, so that the technical problem that the elastic modulus of the conventional high-strength concrete is high is solved, the elastic strength ratio ofthe concrete is remarkably reduced, and the deformability of the concrete is remarkably improved; the concrete is used in projects with high requirements on concrete deformability, such as concrete diaphragm walls, power station cooling towers and the like, and provides basic conditions for reducing the construction cost of the projects.
本发明公开了一种超低弹性模量高极限拉伸值高强度人工砂混凝土，是由原料水、水泥、粉煤灰、长石石英砂岩粗、细骨料和减水剂、引气剂按一定重量份配比配制而成。本发明通过大量科学试验，并对材料进行了优选，最终确定采用长石石英砂岩骨料制备混凝土，成功的配制出了高强度低弹模混凝土。经实测，本发明配制的高强低弹模高极限拉伸混凝土强度超过C50，弹性模量不超过2.0×104MPa，极限拉伸值超过1.5×10‑4，解决了以往高强混凝土的弹性模量居高不下的技术难题，显著降低了混凝土的弹强比，明显提高了混凝土的变形能力，用于混凝土防渗墙、电站冷却塔等对混凝土变形能力要求很高的工程中，为降低工程施工成本提供了基础条件。
Ultra-low elastic modulus, high ultimate tensile value and high-strength artificial sand concrete
The invention discloses ultra-low elastic modulus, high ultimate tensile value and high-strength artificial sand concrete. The concrete is prepared from the following raw materials in parts by weight:water, cement, fly ash, feldspar quartz sandstone coarse aggregate, feldspar quartz sandstone fine aggregate, a water reducing agent and an air entraining agent. Through a large number of scientifictests and optimization of materials, it is finally determined that the feldspar quartz sandstone aggregate is adopted for preparing the concrete, and the high-strength low-elastic-modulus concrete issuccessfully prepared. Through actual measurement, the strength of the prepared high-strength low-elastic modulus high-limit tensile concrete exceeds C50, the elastic modulus does not exceed 2.0*10<4>MPa, and the limit tensile value exceeds 1.5*10<4>, so that the technical problem that the elastic modulus of the conventional high-strength concrete is high is solved, the elastic strength ratio ofthe concrete is remarkably reduced, and the deformability of the concrete is remarkably improved; the concrete is used in projects with high requirements on concrete deformability, such as concrete diaphragm walls, power station cooling towers and the like, and provides basic conditions for reducing the construction cost of the projects.
本发明公开了一种超低弹性模量高极限拉伸值高强度人工砂混凝土，是由原料水、水泥、粉煤灰、长石石英砂岩粗、细骨料和减水剂、引气剂按一定重量份配比配制而成。本发明通过大量科学试验，并对材料进行了优选，最终确定采用长石石英砂岩骨料制备混凝土，成功的配制出了高强度低弹模混凝土。经实测，本发明配制的高强低弹模高极限拉伸混凝土强度超过C50，弹性模量不超过2.0×104MPa，极限拉伸值超过1.5×10‑4，解决了以往高强混凝土的弹性模量居高不下的技术难题，显著降低了混凝土的弹强比，明显提高了混凝土的变形能力，用于混凝土防渗墙、电站冷却塔等对混凝土变形能力要求很高的工程中，为降低工程施工成本提供了基础条件。
Ultra-low elastic modulus, high ultimate tensile value and high-strength artificial sand concrete
一种超低弹性模量高极限拉伸值高强度人工砂混凝土
QIN DAOTIAN (author) / YANG XIN (author) / YANG JING (author) / GAO DANYING (author) / GUO YANWEI (author) / SONG HUAFENG (author) / ZHU FENG (author) / ZHOU XUAN (author) / ZHANG YUSHAN (author) / LIU FABAO (author)
2021-03-19
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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Ultimate strength and modulus of elasticity of high strength Portland cement concrete
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