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Waterproof concrete and preparation method thereof

A technology of waterproof concrete and waterproofing agent, which is applied in the field of concrete, can solve the problems of concrete corrosion, etc., and achieve the effect of improving impermeability and acid corrosion resistance, good impermeability, and low water absorption

Inactive Publication Date: 2020-04-07
成都新豪鼎盛建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing concrete formula usually only considers how to improve the waterproof and anti-seepage performance of concrete, but considers the corrosive influence of the actual use environment on concrete
In the freshwater environment, moss and other plants are easy to grow on the shady and damp concrete buildings, and when the moss spores adhere to the wet concrete, their roots will secrete a small amount of hydrogen ions to convert metal ions in the minerals as Its nutrients are used for its growth; however, in the process of hydrogen ion conversion, organic matter will produce carbonic acid, humic acid and various organic acids to acidify the surface of concrete components. Therefore, a waterproof and impermeable performance is required Concrete with good acid corrosion resistance

Method used

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  • Waterproof concrete and preparation method thereof

Examples

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Effect test

preparation example 1

[0035] Preparation example 1 of modified basalt fiber: 1. Pretreatment Place basalt fiber in 10wt% sodium hydroxide solution and soak for 1 hour, then take it out and wash it with water to neutrality, and obtain pretreated basalt fiber after drying;

[0036] ②Preparation of calcined stone powder; take kaolinite and wollastonite with a weight ratio of 3:1, crush and grind them through a 200-mesh sieve to obtain mixed stone powder; place the mixed stone powder in a high-temperature furnace at 5°C / min Raise the temperature to 500°C at a high speed, calcined for 1 hour, then raised the temperature to 1200°C at a speed of 10°C / min, calcined for 4 hours, and obtained calcined stone powder after cooling;

[0037] ③ Preparation of modifier: Grinding calcined stone powder and silane coupling agent with a weight ratio of 50:1 to obtain modifier;

[0038] ④Take 20kg of pretreated basalt fiber and 50kg of ethanol solution with a volume fraction of 50%, stir for 5-10min, add 4kg of modifie...

preparation example 2

[0039] Preparation example 2 of modified basalt fiber: 1. Pretreatment Put basalt fiber in 10wt% sodium hydroxide solution and soak for 1.5h, then take it out and wash it with water to neutrality, and obtain pretreated basalt fiber after drying;

[0040] ②Preparation of calcined stone powder; take kaolinite and wollastonite with a weight ratio of 3:1, crush and grind them through a 200-mesh sieve to obtain mixed stone powder; place the mixed stone powder in a high-temperature furnace at 5°C / min Raise the temperature to 550°C at a speed of 1.5 hours, then raise the temperature to 1250°C at a speed of 10°C / min, calcinate for 5 hours, and obtain calcined stone powder after cooling;

[0041] ③ Preparation of modifier: Grinding calcined stone powder and silane coupling agent with a weight ratio of 50:1 to obtain modifier;

[0042] ④ Take 25kg of pretreated basalt fiber and 75kg of ethanol solution with a volume fraction of 50%. After stirring for 7.5 minutes, add 5kg of modifier, r...

preparation example 3

[0043] Preparation example 3 of modified basalt fiber: 1. Pretreatment Put basalt fiber in 10wt% sodium hydroxide solution and soak for 2 hours, then take it out and wash it with water to neutrality, and obtain pretreated basalt fiber after drying;

[0044] ②Preparation of calcined stone powder; take kaolinite and wollastonite with a weight ratio of 3:1, crush and grind them through a 200-mesh sieve to obtain mixed stone powder; place the mixed stone powder in a high-temperature furnace at 5°C / min Raise the temperature to 600°C at a high speed, calcining for 2 hours, then raise the temperature to 1300°C at a speed of 10°C / min, calcining for 6 hours, and obtain calcined stone powder after cooling;

[0045] ③ Preparation of modifier: Grinding calcined stone powder and silane coupling agent with a weight ratio of 50:1 to obtain modifier;

[0046] ④ Take 30kg of pretreated basalt fiber and 100kg of ethanol solution with a volume fraction of 50%. After stirring for 10 minutes, add ...

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Abstract

The invention discloses waterproof concrete and a preparation method thereof, wherein the waterproof concrete is prepared from the following components in parts by weight: 300 to 350 parts of cement,600 to 700 parts of fine aggregate, 900 to 1000 parts of coarse aggregate, 100 to 120 parts of an admixture, 8 to 10 parts of an additive, 25 to 30 parts of a waterproof agent and 130 to 150 parts ofwater, wherein the preparation method of the waterproof agent comprises: taking 40-60 parts by weight of modified basalt fiber and 5-7 parts by weight of disproportionated potassium rosinate, uniformly stirring, adding 30-40 parts by weight of a UEA expanding agent, 3-5 parts by weight of sodium dodecyl sulfate and 3-5 parts by weight of ferrous sulfate, and uniformly stirring to obtain the waterproof agent. The waterproof concrete provided by the invention has excellent water resistance, excellent permeability resistance and excellent acid corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a waterproof concrete and a preparation method thereof. Background technique [0002] Concrete is generally cured by mixing cementitious materials, aggregates, water and admixtures. When ordinary concrete is cured and formed, due to the tiny cracks in the concrete itself and its capillary effect, under external forces such as water pressure, the concrete will Water seepage will affect its service life, so for underwater projects, specific waterproof concrete is required. Waterproof concrete refers to concrete with an impermeability level greater than or equal to P6 level, which is mainly used in underground engineering of industrial and civil buildings. According to its preparation method, it can be divided into four types: waterproof concrete with improved gradation method, ordinary waterproof concrete with increased cement content and superfine powder filler, ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/27C04B111/20
CPCC04B28/04C04B2111/20C04B2111/27C04B14/068C04B18/027C04B14/14C04B18/08C04B18/141C04B18/146C04B2103/302C04B2103/65
Inventor 颜冬
Owner 成都新豪鼎盛建材有限公司
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