Carbon fiber concrete for construction cold joints and preparation method of carbon fiber concrete

Abstract

The invention discloses a carbon fiber concrete for construction cold joints and a preparation method of the carbon fiber concrete. The carbon fiber concrete has the matching ratios including the water-cement ratio of 0.5, the carbon fiber volume rate of 0.70%, the water matching ratio of 160 kg / m<3>, the cement matching ratio of 320 kg / m<3>, the sand matching ratio of 727 kg / m<3>, the stone matching ratio of 1185 kg / m<3> and the sand ratio of 38%. In the preparation process, cement, sand and stone are dry-stirred, then carbon fiber is added to be evenly mixed, then water is added to be wet-stirred, lightweight aggregate concrete is filled in a test piece mold at a time to be molded by casting, and finally the surfaces of all test pieces are wrapped by cloth so that the humidity and temperature of the test pieces can be kept and wet curing can be conducted. Due to the addition of carbon fiber, the characteristics of bonding surfaces of aggregate and cement mortar are improved, the internal structure of the concrete is optimized, and therefore the characteristics of the materials are brought into full play; due to the carbon fiber, the effects of enhancing, toughening and crack arresting are achieved on the concrete, and the structural performance of the concrete is optimized.

Description

technical field [0001] The invention relates to a carbon fiber concrete and a preparation method thereof, in particular to a carbon fiber concrete for cold joint construction and a preparation method thereof. Background technique [0002] As we all know, concrete has always dominated the construction field because of its excellent performance, and its application range is very wide. With the continuous development of the modern economy and the continuous improvement of the level of construction technology, especially the continuous improvement and development of concrete structures, high-rise and long-span structures continue to emerge. Compared with other common building materials (such as steel, wood, plastic, etc.), concrete has the advantages of good durability, good plasticity, wide source of materials, simple production process, low cost, convenient application and can be combined with steel bars and other materials to form high-strength materials. , plays a pivotal r...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a carbon fiber concrete for construction of cold joints and its preparation method, which can improve the bonding surface characteristics of aggregate and cement mortar, optimize the internal structure of concrete, thereby fully exerting its material properties, and Carbon fiber plays a significant role in strengthening, toughening and cracking resistance of concrete, and solves defects such as cracks and insufficient tensile strength of ordinary concrete

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