Wear-resistant and antiknock concrete and preparation method thereof

A concrete and high wear-resistant technology, applied in the field of concrete, can solve the problems of undeveloped ultra-high-strength concrete research, burst damage, thermal cracking of materials, etc., and achieve the effects of high toughness, resistance to instantaneous high temperature burst, and long service life

Active Publication Date: 2016-07-27
BEIJING ZHONGYANYI ENG TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the military defense facilities for defense against the attack of penetrating weapons such as ground penetrating bombs need to have the functions of wear resistance, high temperature burst resistance, explosion resistance and high toughness at the same time, and the defense facilities with these properties have not been studied so far.
Secondly, this kind of multifunctional concrete also has a considerable market in daily life. Roads, various machine workshops, parking lots, warehouses, etc. have put forward high wear-resistant requirements for the ground; the hidden dangers of explosive solids, liquids, and gases cannot be underestimated. Anti-explosion and anti-shock functions are put forward for facilities; high-strength and high-performance concrete with dense structure will suffer from fire or high temperature due to temperature gradient, internal and external constraints, thermal expansion mismatch between cement paste and aggregate, and temperature sensitivity. It is difficult to overcome the thermal cracking of the material, the occurrence of burst damage, etc.
Although the prior art adopts various methods to enhance wear resistance or anti-knock performance, the prior art can only improve the single performance of concrete. Burst and high blast resistance are different, and research on ultra-high-strength concrete that integrates several properties has not yet been carried out

Method used

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  • Wear-resistant and antiknock concrete and preparation method thereof
  • Wear-resistant and antiknock concrete and preparation method thereof
  • Wear-resistant and antiknock concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0038] Wear-resistant and anti-explosion concrete, the specific components and proportions are as follows: Ordinary Portland cement (specific surface area 385m 2 / kg, apparent density 3.14g / cm 3 )796kg / m 3 , high-strength admixture (active SiO2 Mass ratio is 73%, CaO mass ratio is 10%, SO 3 The mass ratio is 14%, Al 2 o 3 Mass ratio is 1.6%) 281kg / m 3 , fine aggregate river sand (apparent density 2.72g / cm 3 )697kg / m 3 , high wear-resistant aggregate bauxite sand (fineness modulus 2.9, mud content 0.4%) 677kg / m 3 , 32.8kg / m of polycarboxylate high-performance superplasticizer with a solid content of 25% 3 , polymer defoamer 4.3kg / m 3 , calcium sulfoaluminate CSA expansion agent is 35kg / m 3 , carbon fiber (tensile strength up to 5500MPa, aspect ratio 66, density 1.8g / cm 3 ) volume content 2.5%, organic fiber (polypropylene fiber, density 0.90 / cm 3 , aspect ratio 655) volumetric dosage 0.5%, water 179kg / m 3 .

[0039] The preparation method is the same as in Example ...

Embodiment 3

[0052] Wear-resistant and anti-explosion concrete, the specific components and proportions are as follows: Portland cement (specific surface area 428m 2 / kg, apparent density 3.14g / cm 3 )1014kg / m 3 , high-strength admixture (active SiO 2 The mass ratio accounts for 61%, CaO accounts for 15%, SO 3 17%, Al 2 o 3 accounted for 1.3%) 161kg / m 3 , copper slag fine aggregate (apparent density 3.06g / cm 3 )811kg / m 3 , high wear-resistant aggregate quartz sand (fineness modulus 2.4, mud content 0.8%) 271kg / m 3 , sulfamate high-efficiency superplasticizer with a solid content of 20% 58.2kg / m 3 , silicone defoamer 10.5kg / m 3 , calcium sulfoaluminate CSA expansion agent is 53kg / m 3 , steel fiber (steel fiber, tensile strength up to 3200MPA, aspect ratio 87, density 7.6g / cm 3 ) volume content 1.5%, organic fiber (polypropylene fiber, density 0.88 / cm 3 , aspect ratio 686) volumetric dosage 0.2%, water 208kg / m 3 .

[0053] The preparation method is the same as in Example 1.

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Abstract

The invention discloses wear-resistant and antiknock concrete and a preparation method thereof. Each cubic meter of the concrete comprises 600-1600kg of cement, 400-1400kg of fine aggregate, 30-560kg of a high-strength admixture, 250-1300kg of high wear-resistant aggregate, 3-500kg of high tensile strength fibers, 0.4-45kg of organic fibers, 0.6-43.2kg of a water reducer (based on solid content), 0.06-43kg of an antifoaming agent, 6-129kg of an expanding agent and 100-430kg of water. The wear-resistant, antiknock and radiation-resistant concrete has high wear resistance, instant high temperature explosion resistance, high knock resistance, high toughness and radiation resistance.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to wear-resistant and blast-resistant concrete and a preparation method thereof. Background technique [0002] Ground-penetrating projectiles play a decisive role in wars, relying on their ultra-high rate of fire and rapid rotation to drill into the concrete layer and explode to destroy concrete buildings. This makes the military defense facilities for defense against such penetrating weapons such as ground penetrating bombs need to have the functions of wear resistance, high temperature burst resistance, explosion resistance and high toughness simultaneously, and the defense facilities with these properties have not been studied so far. Secondly, this kind of multifunctional concrete also has a considerable market in daily life. Roads, various machine workshops, parking lots, warehouses, etc. have put forward high wear-resistant requirements for the ground; the hidden dangers of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/00C04B14/38C04B14/48C04B16/06
Inventor 林志翔孙蓓桂志伟
Owner BEIJING ZHONGYANYI ENG TECH DEV CENT
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