Low-shrinkage and low-viscosity C80 high-strength pump concrete and preparation method thereof

A technology for pumping concrete and high-strength concrete, applied in the field of building materials, can solve the problems of lack of high-cementing material volume stability, lack of high-strength concrete over-stick, poor volume stability, etc., to improve volume stability, appearance quality improvement, The effect of improved crack resistance

Inactive Publication Date: 2021-01-15
安徽瑞和新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent 202010446763.4 prepares a C80 ultra-high pumpable concrete. This patent focuses more on pumping construction performance, and lacks solutions to problems such as volume stability and poor appearance quality of high-gelling materials with low water-binder ratio.
Patent 202010336016.5 prepares a high-strength concrete. This patent is more about the function of improving strength, and lacks solutions to problems such as high-strength concrete over-viscosity and poor volume stability.

Method used

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  • Low-shrinkage and low-viscosity C80 high-strength pump concrete and preparation method thereof
  • Low-shrinkage and low-viscosity C80 high-strength pump concrete and preparation method thereof
  • Low-shrinkage and low-viscosity C80 high-strength pump concrete and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] A low-shrinkage and low-viscosity C80 high-strength pump concrete and a preparation method thereof,

[0031] The parts by weight of each component are: 432 parts of cement, 108 parts of multifunctional admixture for high-strength concrete, 795 parts of sand, 1012 parts of gravel, 13.5 parts of chemical admixture composition, and 119 parts of water;

[0032] Among them, the mass percentage of each component of the special multifunctional admixture for high-strength concrete is: nano-calcium carbonate 0.7%, nano-calcium silicate hydrate 1%, micro-silica fume 20%, fly ash micro-beads 20%, mineral powder 23.767 %, calcium oxide expansion agent 15%, magnesium oxide expansion agent 15%, maleic anhydride ester 0.03%, neopentyl glycol 4.5%, tributyl phosphate 0.003%.

[0033] The mass percent of each component of the chemical admixture composition is: 35% of small molecular weight polycarboxylate water reducer, 20% of slow release polycarboxylate water reducer, 3% of sodium glu...

Embodiment 2

[0035] A low-shrinkage and low-viscosity C80 high-strength pump concrete and a preparation method thereof,

[0036] The parts by weight of each component are: 420 parts of cement, 140 parts of multifunctional admixture for high-strength concrete, 782 parts of sand, 996 parts of gravel, 12.88 parts of chemical admixture composition, and 129 parts of water;

[0037] Among them, the mass percentage of each component of the special multifunctional admixture for high-strength concrete is: nano-calcium carbonate 0.7%, nano-calcium silicate hydrate 1%, micro-silica fume 20%, fly ash micro-beads 20%, mineral powder 23.767 %, calcium oxide expansion agent 15%, magnesium oxide expansion agent 15%, maleic anhydride ester 0.03%, neopentyl glycol 4.5%, tributyl phosphate 0.003%.

[0038] The mass percent of each component of the chemical admixture composition is: 35% of small molecular weight polycarboxylate water reducer, 20% of slow release polycarboxylate water reducer, 3% of sodium gluco...

Embodiment 3

[0040] A low-shrinkage and low-viscosity C80 high-strength pump concrete and a preparation method thereof,

[0041] The parts by weight of each component are: 413 parts of cement, 177 parts of multifunctional admixture for high-strength concrete, 764 parts of sand, 973 parts of gravel, 11.8 parts of chemical admixture composition, and 141 parts of water;

[0042] Among them, the mass percentage of each component of the special multifunctional admixture for high-strength concrete is: nano-calcium carbonate 0.7%, nano-calcium silicate hydrate 1%, micro-silica fume 20%, fly ash micro-beads 20%, mineral powder 23.767 %, calcium oxide expansion agent 15%, magnesium oxide expansion agent 15%, maleic anhydride ester 0.03%, neopentyl glycol 4.5%, tributyl phosphate 0.003%.

[0043] The mass percent of each component of the chemical admixture composition is: 35% of small molecular weight polycarboxylate water reducer, 20% of slow release polycarboxylate water reducer, 3% of sodium gluc...

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Abstract

The invention provides low-shrinkage and low-viscosity C80 high-strength pump concrete. The high-strength pump concrete is prepared from the following raw materials in parts by weight: 375 to 480 parts of cement, 105 to 180 parts of a special multi-functional admixture for high-strength concrete, 720 to 825 parts of sand, 950 to 1060 parts of gravels, 108 to 145 parts of water and 8 to 15 parts ofa chemical additive composition. The invention further provides a preparation method of the high-strength pump concrete. By optimizing the technical parameters of the C80 high-strength concrete raw material and utilizing the reasonable compatibility of the special multi-functional admixture for high-strength concrete and the chemical additive composition, multiple effects are integrated, so thatthe early and later strength of the concrete is improved, the plastic viscosity of the concrete is reduced, the bubble area on the surface of hardened concrete is reduced, and the volume stability ofthe concrete is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a low-shrinkage and low-viscosity C80 high-strength pump concrete and a preparation method thereof. Background technique [0002] With the progress of the times, the rapid development of society and the comprehensive innovation of technology, concrete buildings have shown new structural forms and systems, and are developing in the direction of large-scale and high-rise buildings. These buildings have higher technical requirements for the construction performance, mechanical properties, and durability of concrete. However, traditional concrete technology can no longer meet the needs of modern social engineering construction. Based on the continuous development of concrete technology and the socio-economic There is a strong demand for the development of concrete engineering technology, and the emergence and application of high- and ultra-high-strength concret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/34
CPCC04B28/04C04B2111/00008C04B2111/346C04B2111/00146C04B2201/50C04B14/28C04B14/043C04B18/146C04B18/082C04B18/12C04B22/064C04B22/066C04B24/045C04B24/2641C04B24/026C04B24/003C04B14/068C04B2103/302C04B2103/22C04B24/166C04B2103/50C04B24/24
Inventor 温金保唐修生杜志芹刘兴荣祝烨然徐志峰夏强陈国新王冬李建季海沈燕平王松
Owner 安徽瑞和新材料有限公司
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