A kind of strengthening method of porous coral aggregate

A coral and aggregate technology, applied in the field of porous coral aggregate reinforcement, can solve the problems of reducing the cohesive force of cement paste, difficult to penetrate into elongated pores, poor operability, etc., so as to improve the anti-splitting performance and increase the density. and strength, the effect of reducing water absorption

Active Publication Date: 2021-11-05
CHINA UNIV OF MINING & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Technical problem: The purpose of the present invention is to overcome the deficiencies in the prior art and provide a porous, high-water-absorbing coral aggregate enhancer to solve the problem of poor encapsulation and difficulty in immersing in slender coral aggregate pores in traditional coral aggregate pore improvement methods. Problems of porosity, poor operability, and reduced cohesion with cement paste improve the performance of coral concrete and increase the application range of coral concrete

Method used

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  • A kind of strengthening method of porous coral aggregate

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Experimental program
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Effect test

Embodiment 1

[0044] Step 1: Use a jaw crusher to crush the coral aggregate, sieve the coral aggregate with a particle size of 10mm, and dry the coral aggregate at 105°C for 24 hours; after drying, immerse the coral aggregate in water Soak in a closed container with a glass modulus of 3.5 and a Baume degree of 40% containing sodium water glass, and at the same time use an ultrasonic oscillator to vibrate the coral aggregate to discharge the gas in the coral aggregate; after soaking for 2 hours, seal the coral aggregate Take it out of the container, wipe the surface clean, and put it into a 105°C oven for water glass dehydration. After 6 hours, take out the dehydrated coral aggregate, put it in a saturated calcium chloride solution and soak it for 12 hours, and put it in an oven at 80°C for drying for 6 hours after taking it out. Soak the coral aggregate in the sodium water glass solution for 2 hours again, take it out and dry it, soak it in a saturated calcium chloride solution for 2 hours,...

Embodiment 2

[0048] Step 1: A method for enhancing porous coral aggregates, using a jaw crusher to crush the coral aggregates, sieving the coral aggregates with a particle size of 10mm, and drying the coral aggregates at 105°C for 24 hours; drying Finally, put the coral aggregate in a closed container, use a vacuum pump to draw the air in the container to 0.01 standard atmospheric pressure, and then immerse the coral aggregate in the enhancer A in the airtight container, that is, the water glass with a modulus of 2.5, wave Mido is 35% sodium water glass; after soaking for 8-12 minutes, take the coral aggregate out of the airtight container, wipe the surface clean, and put it in an oven at 80°C for water glass dehydration. After 6 hours, take out the dehydrated coral aggregate, put it into enhancer B, that is, soak it in a saturated calcium chloride solution for 12 hours, take it out and put it in an oven at 80°C for drying. Soak the coral aggregate in the sodium water glass solution for 2 ...

Embodiment 3

[0052] Step 1: Use a jaw crusher to crush the coral aggregate, sieve the coral aggregate with a particle size of 10mm, and dry the coral aggregate at 105°C for 24 hours; after drying, immerse the coral aggregate in a container The modulus of water glass is 3, and the degree of Baume is 45%. Potassium water glass is contained in potassium water glass. At the same time, the ultrasonic oscillator is used to vibrate the coral aggregate to discharge the gas in the coral aggregate; after soaking for 1.5 hours, put the coral aggregate in a closed container Take it out, wipe the surface clean, put it in a 105°C oven for water glass dehydration treatment; take out the dehydrated coral aggregate after 7 hours, put it in enhancer B, that is, soak in saturated calcium chloride solution for 10 hours, take it out and put it in Dry in an oven at 80°C for 5 hours. Soak the coral aggregate in the potassium silicate solution for 2.5 hours again, take it out and dry it, soak it in a saturated ca...

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Abstract

The invention discloses a method for strengthening porous coral aggregate, which belongs to the technical field of building material application. After the porous coral aggregate is broken, soak it in the enhancer A material, use ultrasonic vibration or vacuum pump to discharge the gas in the pores, take out the coral aggregate and dry it in the oven, then soak it in the enhancer B material, take it out and bake it. Dry, repeat this process many times, and then wrap the coral aggregate with enhancer C material mixed with water to obtain enhanced coral aggregate. The obtained coral aggregate has low processing cost, is non-toxic and harmless, and can fill and block the deep long holes and curved holes of the coral aggregate, significantly reduce the water absorption rate, increase the workability of coral concrete; increase the density and strength of the coral aggregate, The barrel pressure strength of the coral aggregate is increased by 80%; the coral aggregate has high resistance to splitting, strong acid resistance, and strong resistance to dry and wet cycles.

Description

Technical field: [0001] The invention relates to the technical field of application of building materials, in particular to a method for reinforcing porous coral aggregates. Background technique: [0002] Aggregate is an important part of concrete materials. For marine structures and island buildings, the existing aggregates are mainly the continuous graded stones used in ordinary concrete with good particle shape, hard texture, and a particle size of 25mm or less. Ordinary concrete not only has high transportation costs, but also is easily restricted by meteorological and marine environments (such as typhoons). Therefore, local materials are an effective way to obtain aggregates. Coral reefs are calcareous rocks composed mainly of coral debris and marine animal debris. Its calcium content reaches 90%, and it is widely distributed around coral islands or coral reefs. The bulk density of coral coarse bone is 900kg / m 3 , the apparent density is 1800kg / m 3 , the porosity is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B20/12C04B14/28
CPCC04B14/28C04B20/12C04B20/1074C04B20/1077
Inventor 尹世平梁向洲成帅安刘双苏迅董朋杰
Owner CHINA UNIV OF MINING & TECH
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