Low-alkalinity fertilizer efficiency slow-release ceramsite vegetation concrete and preparation method thereof

A technology of planting raw concrete and slow-release type, applied in the field of concrete, can solve the problems of improving the water and fertilizer retention performance of planting materials, waste of resources, and difficult to mix evenly, etc. Durable, plant-compatible effect

Active Publication Date: 2020-12-15
TIANJIN CEMENT IND DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The cementitious material used in concrete is generally ordinary Portland cement, and the pore alkalinity is too high, which is not suitable for plant growth;
[0007] 2. Natural aggregates are mostly used in concrete preparation, which causes waste of resources to a certain extent because it does not need to bear weight;
[0008] 3. The water and fertilizer retention performance of planting materials needs to be improved;
[0009] 4. The long-term supply of nutrients needed by plants is difficult to guarantee;
[0010] 5. There are many kinds of additives, it is not easy to mix evenly, and the operation is cumbersome

Method used

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  • Low-alkalinity fertilizer efficiency slow-release ceramsite vegetation concrete and preparation method thereof
  • Low-alkalinity fertilizer efficiency slow-release ceramsite vegetation concrete and preparation method thereof
  • Low-alkalinity fertilizer efficiency slow-release ceramsite vegetation concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The ecological concrete formula 1 in Table 4 is according to step 1: Stirring: first, stir the evenly mixed low-alkalinity high-belite sulphoaluminate cement, fly ash, silica fume and ceramsite for 90 seconds, and then add 70% of Water and water reducer, stir for 90s, and finally add the remaining water and water reducer and stir for 120s, the total stirring time is 300s;

[0051] Step 2: Forming and maintenance: After adjusting the concrete slump to the design requirement of 250mm, use manual pouring, vibration forming, and the vibration time is 10s. The temperature is 20±2°C, and the relative humidity is above 95% for curing, and the curing time is not less than 7 days;

[0052] Step 3: Sowing: Mix the filling materials (soil and slow-release full-nutrient fertilizer, etc.) evenly, and then use the grouting method to fill the pores of the ceramsite concrete, and then mix the plant seeds with the surface layer of guest soil evenly, and place them in the ceramsite concr...

Embodiment 2

[0058] The ecological concrete formula 2 in Table 5 is followed by step 1: Stirring: first, stir the evenly mixed low-alkalinity high-belite sulfoaluminate cement, fly ash, silica fume and ceramsite for 60 seconds, and then add 70% of Water and superplasticizer, stir for 60s, and finally add the remaining water and superplasticizer and stir for 90s, the total stirring time is 210s;

[0059] Step 2: Forming and curing: After the concrete slump is adjusted to the design requirement of 100mm, manual pouring and vibration forming are used for 5 seconds. The temperature is 20±2°C, and the relative humidity is above 95% for curing, and the curing time is not less than 7 days;

[0060] Step 3: Sowing: Mix the filling material (soil and slow-release full-nutrient fertilizer, note: not including fly ash and silica fume), and then use the grouting method to fill the pores of the ceramsite concrete, and then mix the plant seeds with the surface The foreign soil is mixed evenly, and a la...

Embodiment 3

[0065] According to the ecological concrete formula 3 in Table 6, follow step 1: stirring: first, stir the evenly mixed low alkalinity high belite sulfoaluminate cement, fly ash, silica fume and ceramsite for 70 seconds, then add 70% of Water and superplasticizer, stir for 70s, and finally add the remaining water and superplasticizer and stir for 100s, the total stirring time is 240s;

[0066] Step 2: Forming and maintenance: After adjusting the concrete slump required by the design to 160mm, use manual pouring, vibration forming, and the vibration time is 6s. The temperature is 20±2°C, and the relative humidity is above 95% for curing, and the curing time is not less than 7 days;

[0067] Step 3: Sowing: Mix the filling materials (soil and slow-release full-nutrient fertilizer, etc.) evenly, and then use the grouting method to fill the pores of the ceramsite concrete, and then mix the plant seeds with the surface layer of guest soil evenly, and place them in the ceramsite con...

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Abstract

The invention belongs to the technical field of concrete, and particularly relates to low-alkalinity fertilizer efficiency slow-release ceramsite vegetation concrete and a preparation method thereof.The low-alkalinity fertilizer efficiency slow-release ceramsite vegetation concrete is prepared from the following raw materials in parts by weight: 90-130 parts of high-belite sulphoaluminate cement,45-60 parts of water, 250-320 parts of high-strength ceramsite, 1.2-2.0 parts of a water reducing agent, 25-40 parts of fly ash, 10-15 parts of silica fume, 3-5 parts of a slow-release full-nutrientfertilizer, 8-15 parts of pore filling soil and 8-15 parts of surface alien soil. The invention provides low-alkalinity fertilizer efficiency slow-release ceramsite vegetation concrete and a preparation method thereof. The fertilizer efficiency slow-release ceramsite vegetation concrete can meet the growth environment of plants, is beneficial to light weight of ecological concrete, utilizes solidwastes to a great extent, saves resources, can effectively reduce the environmental load, and can be coordinated with the ecological environment.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a low-alkalinity fertilizer-effect slow-release ceramsite plant-growing concrete and a preparation method thereof. Background technique [0002] Existing techniques and drawbacks: [0003] Ecological concrete is a porous concrete with a continuous pore structure. It has a large specific surface area and good water permeability. It is a new type of ecological engineering material that integrates environmental protection, support, water permeability and purification. It can be used in roadbeds and rivers Slope protection, greening, water purification, and external wall hanging panels on both sides of the river. Among them, in terms of slope protection and greening, the ecological concrete contains a large number of connected pores, which can retain water and permeate water, and help the growth of plant roots, which can not only enhance the stability of slope protectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B38/00A01G24/10A01G24/12A01G24/40C04B111/40
CPCC04B28/06C04B38/0041A01G24/12A01G24/10A01G24/40C04B2201/50C04B2111/40C04B2111/00758C04B2111/00284C04B18/08C04B18/146C04B18/027C04B2103/302Y02W30/91
Inventor 胡芝娟李小燕韩辉姚丕强单丹吕仲博
Owner TIANJIN CEMENT IND DESIGN & RES INST
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