Cement grouting mortar with high permeability and preparation method thereof

A high-permeability, cement technology, applied in the field of building materials, can solve the problems of unsatisfactory stability, complicated synthesis process, and increased production cost, and achieve the effects of high fluidity, simple process operation, and economical production cost

Inactive Publication Date: 2017-08-18
南京荣德信交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the cement mortar prepared by the existing technology at home and abroad generally requires a large water-cement ratio to achieve high fluidity, which will not only greatly reduce the strength, but also fail to meet the requirements for stability; if high polymer is used Resin will greatly increase the production cost, and the synthesis process is complicated, so it is limited in application

Method used

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  • Cement grouting mortar with high permeability and preparation method thereof
  • Cement grouting mortar with high permeability and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] The high-permeability cement pouring mortar involved in this embodiment is made of the following mass proportioning components: P·II 42.5R Portland cement 56.1%; admixture 0.06%; admixture 4.2%; sand 7.64% and Water 32%.

[0024] The preparation method of the above-mentioned high-permeability cement grout of the present embodiment comprises the following steps:

[0025] 1) At 20°C, mix P·Ⅱ42.5R Portland cement with a mass percentage of 56.1%, 0.06% admixture, 4.2% admixture and 7.64% sand by manual or mechanical mixing until basically uniform;

[0026] 2) Use a planetary mortar mixer at a speed of 80r / min for dry mixing for 60s, then gradually add water with a mass percentage of 32% within 30s, keep stirring during the water addition, continue stirring for 120s, and end to obtain perfusion mortar. In this embodiment, the water-cement ratio used is 0.57.

[0027] Its main properties are shown in Table 1.

Embodiment 2

[0029] The high-permeability cement pouring mortar involved in this embodiment is made of the following components in mass ratio: P·II 42.5R Portland cement 51%; admixture 0.08%; admixture 5%; sand 12.5% ​​and Water 31.42%.

[0030] The preparation method of the above-mentioned high-permeability cement grout of the present embodiment comprises the following steps:

[0031] 1) At 0°C, mix P·II42.5R Portland cement with a mass percentage of 51%, 0.08% admixture, 5% admixture and 12.5% ​​sand by manual or mechanical mixing until basically uniform;

[0032] 2) Use a planetary mortar mixer with a speed of 80r / min for dry mixing for 90s, then gradually add water with a mass percentage of 31.42% within 45s, keep stirring during the water addition, continue stirring for 150s, and end to obtain perfusion mortar.

[0033] In this embodiment, the water-cement ratio used is 0.62. Its main properties are shown in Table 1.

Embodiment 3

[0035] The high-permeability cement pouring mortar involved in this embodiment is made of the following mass proportioning components: P·II 42.5R Portland cement 61%; admixture 0.12%; admixture 3%; sand 6.5% and Water 29.38%.

[0036] The preparation method of the above-mentioned high-permeability cement grout of the present embodiment comprises the following steps:

[0037] 1) At 35°C, mix 61% of P·II42.5R Portland cement, 0.12% of admixture, 3% of admixture and 6.5% of sand by manual or mechanical mixing until basically uniform;

[0038] 2) Use a planetary mortar mixer at a speed of 80r / min for dry mixing for 120s, then gradually add water with a mass percentage of 29.38% within 60s, keep stirring during the water addition, continue stirring for 180s, and end to obtain perfusion mortar.

[0039] In this embodiment, the adopted water-cement ratio is 0.48. Its main properties are shown in Table 1.

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Abstract

The invention relates to a cement grouting mortar with high permeability prepared by components in the following mass ratio: 51-61% of cement; 0.06-0.12% of additive; 3-5% of admixture; 6.5-12.5% of sand and 28-32% of water. Compared with the prior art, the cement grouting mortar with high permeability provided by the invention has advantages of great mobility, high strength, good stability, simple process operations, and low preparation costs and the like, can be widely used in road engineering, constructional engineering, and geotechnical engineering, and in particular, is adapted to grouting-typed bituminous concrete-cement mortar pavement engineering.

Description

technical field [0001] The invention relates to a road engineering material, in particular to a high-permeability cement pouring mortar and a preparation method of the cement pouring mortar. It belongs to the field of building materials. Background technique [0002] With the research and development of semi-flexible asphalt concrete-cement mortar pouring pavement technology, the requirements for pouring mortar are getting higher and higher, which is mainly reflected in the requirement that the pouring slurry has great fluidity, high strength and good performance. stability. [0003] At present, the cement mortar prepared by the existing technology at home and abroad generally requires a large water-cement ratio to achieve high fluidity, which will not only greatly reduce the strength, but also fail to meet the requirements for stability; if high polymer is used Resin will greatly increase the production cost, and the synthesis process is complicated, so it is limited in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2201/50C04B2111/70C04B2103/302C04B14/06C04B22/124C04B22/147C04B2103/0068C04B22/04C04B14/041C04B22/143C04B22/148
Inventor 马翔赵莹
Owner 南京荣德信交通科技有限公司
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