180 MPa ultra-high-performance concrete and preparation method thereof
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An ultra-high-performance concrete technology, applied in the field of building materials, can solve the problems of staying and restricting the application of ultra-high-performance concrete, and achieve the effect of ensuring strength, low manufacturing cost, and simplifying the maintenance process
Inactive Publication Date: 2017-10-20
TIANJIN CHENGJIAN UNIV
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[0003] At present, for ultra-high performance concrete, although there have been a small number of engineering applications, most of them are still in the laboratory research stage. The existing ultra-high performance
Method used
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Embodiment 1
[0025] A 180MPa ultra-high performance concrete, in parts by mass, including 805 parts of cement, 322 parts of fly ash beads, 161 parts of silica fume, 177 parts of coarse sand, 266 parts of medium sand, 443 parts of fine sand, and 156 parts of steel fiber Parts, 26 parts of superplasticizer, 0.2 parts of defoamer, 209 parts of water.
[0026] The cement is ordinary Portland cement with a strength grade of 52.5.
[0027] Fly ash beads are superfine fly ash fine sinking beads.
Embodiment 2
[0029] A 180MPa ultra-high performance concrete, in parts by mass, including 805 parts of cement, 322 parts of fly ash beads, 161 parts of silica fume, 177 parts of coarse sand, 266 parts of medium sand, 443 parts of fine sand, and 195 parts of steel fiber Parts, 26 parts of superplasticizer, 209 parts of water.
[0030] The cement is a high-sulfur-resistant Portland cement with a strength grade of 42.5.
[0031] Fly ash beads are superfine fly ash fine sinking beads.
Embodiment 3
[0033] A 180MPa ultra-high performance concrete, in parts by mass, including 800 parts of cement, 300 parts of fly ash beads, 200 parts of silica fume, 177 parts of coarse sand, 266 parts of medium sand, 443 parts of fine sand, and 150 parts of steel fiber Parts, 22 parts of superplasticizer, 209 parts of water.
[0034] The cement is ordinary Portland cement with a strength grade of 52.5.
[0035] Fly ash beads are superfine fly ash fine sinking beads.
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Abstract
The invention discloses 180 MPa ultra-high-performance concrete and a preparation method thereof. The concrete comprises the following components in parts by weight: 800-810 parts of Portland cement, 300-400 parts of fly ash microbeads, 150-200 parts of silica fume, 800-1,000 parts of silica sand, 150-200 parts of steel fibers, 22-26 parts of a polycarboxylic acid type water reducer, 0.1-0.3 part of a defoaming agent and 209-236 parts of water. The configured ultra-high-performance concrete does not need special raw materials, is low in cost, and is energy-saving and environmentally friendly; and while the strength of the concrete can be improved, the mobility of the concrete is greatly improved. Meanwhile, the concrete further has ultra-high tensile strength, excellent toughness and excellent durability.
Description
Technical field [0001] The invention relates to the technical field of building materials, in particular to a 180MPa ultra-high performance concrete and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the engineering structure is developing in a higher, larger and stronger direction, which puts forward new requirements on the performance of concrete. With the advancement of science and technology, ultra-high performance concrete is one of the main directions to solve this problem. Ultra-high performance concrete has good durability and can greatly increase the service life of concrete structures. At the same time, it also has excellent mechanical properties and can greatly reduce the size of components. Generally speaking, the weight of the ultra-high performance concrete structure is about 1 / 3 or 1 / 2 of that of the traditional concrete structure, which can effectively reduce the weight of the structure and save ma...
Claims
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