Water and fertilizer retention type vegetative cement-based material

A cement-based material, water-retaining and fertilizer-retaining technology, which is applied in the field of environmental protection building materials, can solve the problems of poor water and fertilizer retention, dry and dead plants, and high alkalinity of the internal pore solution, achieving high water and fertilizer retention capacity, adjustable alkalinity, The effect of avoiding death

Active Publication Date: 2015-11-11
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardened cement slurry has poor water and fertilizer retention. After watering and fertilization, water and nutrients are easily lost. At the same time, the alkalinity of the internal pore solution is too high. The plants will dry up and die due to insufficient water and nutrients and the environment. Play the role of greening the slope and improving the ecological environment
Therefore, the popularization and application of vegetable cement concrete is severely restricted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A water- and fertilizer-retaining plant-growing cement-based material, the parts by weight of each component are as follows:

[0019] Sulphoaluminate cement 60.0

[0020] Natural Peat Moss 10.0

[0021] Natural Clinoptilolite 15.0

[0022] Natural Sodium Bentonite 10.0

[0023] Silica fume 1.0

[0024] The organic matter content of the above natural peat soil is 15%, and the saturated water absorption rate is 140%; the saturated water absorption rate of natural clinoptilolite is 85%; the saturated water absorption rate of sodium bentonite is 440%; the specific surface area of ​​silica fume is 1.9×10 4 m 2 / kg.

[0025] Peat soil, zeolite, and bentonite are ground into fine grains, and mixed evenly with sulphoaluminate cement and silica fume in proportion by weight to prepare a water- and fertilizer-retaining plant-growing cement-based material. The hardened slurry of the vegetable cement-based material can absorb water 1.48 times its own mass, and the water slow-r...

Embodiment 2

[0027] A water- and fertilizer-retaining plant-growing cement-based material, the parts by weight of each component are as follows:

[0028] Sulphoaluminate cement 52.0

[0029] Natural Peat Moss 14.0

[0030] Natural clinoptilolite 20.7

[0031] Natural sodium bentonite 14.7

[0032] Silica fume 2.6

[0033] The organic matter content of the above natural peat soil is 25%, and the saturated water absorption rate is 160%; the saturated water absorption rate of natural clinoptilolite is 95%; the saturated water absorption rate of sodium bentonite is 470%; the specific surface area of ​​silica fume is 2.1×10 4 m 2 / kg.

[0034] Peat soil, zeolite, and bentonite are ground into fine grains, and mixed evenly with sulphoaluminate cement and silica fume in proportion by weight to prepare a water- and fertilizer-retaining plant-growing cement-based material. The hardened slurry of the vegetable cement-based material can absorb water 1.55 times its own mass, and the water slow-r...

Embodiment 3

[0036] The parts by weight of each component of a water- and fertilizer-retaining plant-growing cement-based material are as follows:

[0037] Sulphoaluminate cement 45.0

[0038] Natural Peat Moss 20.0

[0039] Natural clinoptilolite 28.0

[0040] Natural sodium bentonite 25.0

[0041] Silica fume 5.0

[0042] The organic matter content of the above natural peat soil is 40%, and the saturated water absorption rate is 175%; the saturated water absorption rate of natural clinoptilolite is 106%; the saturated water absorption rate of sodium bentonite is 496%; the specific surface area of ​​silica fume is 2.4×10 4 m 2 / kg.

[0043] After peat soil, zeolite and bentonite are ground, they are evenly mixed with sulphoaluminate cement and silica fume in proportion by weight to prepare a water- and fertilizer-retaining vegetable cement-based material. The hardened slurry of the vegetable cement-based material can absorb water 1.74 times its own mass, and the water slow-release c...

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Abstract

The invention discloses a water and fertilizer retention type vegetative cement-based material. The material is composed by, by weight, 45.0-60.0 parts of sulphate aluminium cement, 10.0-20.0 parts of peat soil, 15.0-28.0 parts of zeolite, 10.0-25.0 parts of bentonite and 1.0-5.0 parts of silica fume. The material is good in water and fertilizer retention performance, the moisture slow release period can reach 1.5-2 months, the fertilizer efficiency slow release period can reach 10-12 months, the alkalinity is low, the growth requirements of plants are satisfied, the plants are prevented from death on account of deficiency of moisture and nutrients and excessively high environment alkalinity which stops the effects of afforesting and improving the ecological environment.

Description

technical field [0001] The invention belongs to the field of environment-friendly building materials, in particular to a water- and fertilizer-retaining plant-growing cement-based material. Background technique [0002] Traditional cement and its concrete are widely used in the fields of national infrastructure construction and civil engineering because of their high strength and high hardness. Their role is mainly to bear loads and belong to structural materials. However, many infrastructure construction projects, such as slope protection projects such as road slopes, river bank embankments, tunnel entrances, barren hills and steep slopes, not only require cement and its concrete to have a certain mechanical strength, but also require it to have a certain green slope to improve the ecological environment. function of the environment. The plant-grown cement concrete with porous and macroporous structure can ensure that the plant root system penetrates the concrete matrix an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
Inventor 芦令超李来波宫晨琛王守德程新
Owner UNIV OF JINAN
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