A kind of ready-mixed concrete mixed with steel slag and preparation method thereof

A technology of ready-mixed concrete and steel slag, applied in the field of building materials, can solve the problems of affecting the ecological environment, consuming large fossil energy, aggravating the greenhouse effect, etc., and achieving the effect of improving water resistance

Active Publication Date: 2021-11-12
江阴市新远见工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, cement needs to be ground and calcined during the production process. In addition to consuming a large amount of fossil energy in this process, it will also directly or indirectly emit a large amount of carbon dioxide, which will aggravate the greenhouse effect and affect the ecological environment.

Method used

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  • A kind of ready-mixed concrete mixed with steel slag and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation S1 microbial broth: peptone, beef extract, urea, yeast extract blend microbial nutrient solution, the nutrient solution was poured into a microorganism Bacillus subtilis bacteria culture well stirred 1min, to obtain microbial broth;

[0047] Preparation of modified fibers S2:

[0048] A. Preparation of porous fiber: polyvinyl alcohol in distilled water was added and heated to 85 ℃, at 300r / min speed stirring 0.5h, cooled to 55 ℃, hydrochloric acid was added until a pH of 1, citral added, the crosslinking reaction 1.5h, continue to heat up to 85 ℃, adding nano particles of silicon nitride, calcium carbonate, hydrochloric acid, rubber powder and slag, at 800r / min speed stirring 25min, made porous fibers by electrospinning;

[0049] B. Modification of porous fibers: the fibers soaked in the porous silane coupling agent 4h, dry out after soaking placed microbial broth IH, placed under 35 ℃ IH removed after drying, was repeated eight times, modified fiber prepare...

Embodiment 2

[0060] Preparation S1 microbial broth: peptone, beef extract, urea, yeast extract blend microbial nutrient solution, the nutrient solution was poured into a microorganism Bacillus subtilis bacteria culture well stirred 1.5min, to obtain microbial broth;

[0061] Preparation of modified fibers S2;

[0062] A. Preparation of porous fiber: polyvinyl alcohol in distilled water is added and heated to 90 ℃, at 300r / min stirring speed IH, cooled to 60 ℃, hydrochloric acid was added until pH 2, citral added, the crosslinking reaction 2h , continue to heat up to 90 ℃, adding nano particles of silicon nitride, calcium carbonate, hydrochloric acid, rubber powder and slag, at 800r / min speed stirring 35min, made porous fibers by electrospinning;

[0063] B. Modification of porous fibers: the fibers soaked in the porous silane coupling agent 5h, dry out after the microbial cell suspension was placed in soaking 1.5h, 1.5h after removing oven dried under conditions of 37 ℃, repeat 9 times to ...

Embodiment 3

[0074] Preparation S1 microbial broth: peptone, beef extract, urea, yeast extract blend microbial nutrient solution, the nutrient solution was poured into a microorganism Bacillus subtilis bacteria culture well stirred 2min, to obtain microbial broth;

[0075] Preparation of modified fibers S2;

[0076] A. Preparation of porous fiber: polyvinyl alcohol in distilled water is added and heated to 95 deg.] C, at 300r / min speed stirring 1.5h, cooled to 65 ℃, hydrochloric acid was added until pH 3, citral added, the crosslinking reaction 2.5h, continue to heat to 95 deg.] C, adding nano particles of silicon nitride, calcium carbonate, hydrochloric acid, rubber powder and slag, at 800r / min speed was stirred for 45 min, made porous fibers by electrospinning;

[0077] B. Modification of porous fibers: the fibers soaked in the porous silane coupling agent 6h, dry out after the microbial cell suspension was placed in soaking 2h, placed under 40 ℃ removed after drying 2h, repeated 10 time...

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Abstract

The invention discloses a ready-mixed concrete mixed with steel slag and a preparation method thereof. Firstly, citral is added to the polypropylene alcohol solution to modify the polypropylene alcohol, and then calcium carbonate, hydrochloric acid, steel slag, rubber powder and other substances are added to improve its mechanical properties. Performance, porous fibers are made by electrospinning; the porous fibers are modified by using silane coupling agent, and microorganisms are loaded on the modified fibers to make modified fibers; calcium lactate is coated with urea-formaldehyde resin to make calcium lactate micro Capsules; calcium lactate microcapsules and modified fibers are mixed with cement and other materials to make ready-mixed concrete mixed with steel slag; the invention provides a ready-mixed concrete mixed with steel slag and its preparation method. The reaction time, the mechanical properties and impermeability of the prepared concrete samples are effectively improved, and at the same time, it also has a certain self-repair ability, which greatly saves manpower, material and financial resources, and has high practicability.

Description

Technical field [0001] The present invention relates to the field of building materials, in particular ready-mixed concrete and steel slag is a method for preparing mixed. Background technique [0002] Concrete is the largest amount of civil engineering today, the most widely used building materials. Although the high concrete compressive strength, durability, but it also has a certain brittleness, when the load is too large or defect factors such as their own problems, prone to crack, if not for crack repair, concrete is easy to make by water erosion and other harmful chemicals, lead to more serious economic losses. [0003] Traditional repair methods are mainly human repair and reinforcement, this method applies only to visible cracks in the concrete of the internal damage difficult to detect, if not right inside the concrete cracks in time, the latter may also lead to secondary cracking, and human time-consuming repair, repair special structure for hazardous areas and also the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B20/12D01D5/00D01D5/24C12N1/20C12R1/125
CPCC04B20/12C04B28/00C04B2201/50C12N1/20D01D5/003D01D5/24C04B14/06C04B24/307C04B16/0616C04B2103/302C04B18/141C04B18/067C04B18/08C04B20/1051C04B2103/0001
Inventor 李炳王磊斌
Owner 江阴市新远见工程有限公司
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