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Recycled wet-mixed mortar and preparation method thereof

A wet-mixed mortar and regenerated fine aggregate technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of increasing drying links, unfavorable energy saving and environmental protection, and large dust pollution, and achieve improvement The state of the mixture, the effect of great social significance and high economic benefits

Active Publication Date: 2016-09-21
XIAMEN TIANRUN JINLONG BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The currently published information is to apply the dried and ground stone powder to the mortar, which not only needs to increase the drying process and consumes a lot of energy, but also produces a large amount of dust pollution during the drying and grinding process, which is not conducive to energy saving. Environmental friendly

Method used

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  • Recycled wet-mixed mortar and preparation method thereof
  • Recycled wet-mixed mortar and preparation method thereof
  • Recycled wet-mixed mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Take a certain amount of raw materials by the mix ratio shown in Table 1:

[0044] Table 1 Mixing ratio of recycled wet-mixed mortar (unit: kg)

[0045]

[0046] (2) The weighed cement, limestone powder slurry, regenerated fine aggregate and natural sand are forced to stir in the mixer for 60s in advance, then add water-retaining thickener, setting time regulator and water, and continue to stir for 120s.

[0047] (3) Take a certain amount of wet-mixed mortar for the test, and test its performance indicators as shown in Table 2:

[0048] Table 2 Test results of performance indicators of wet-mixed mortar

[0049]

[0050]

[0051] From the results shown in Table 2, it can be seen that the recycled wet-mixed mortar meets the requirements of M5 strength grade, and its performance indicators meet the requirements of various indicators for wet-mixed mortar in "Ready-mixed Mortar" GB / T25181-2010. Can be used for masonry and plastering.

Embodiment 2

[0053] (1) Take a certain amount of raw materials by the mix ratio shown in Table 3:

[0054] Table 3 Mixing ratio of recycled wet-mixed mortar (unit: kg)

[0055]

[0056] (2) The weighed cement, limestone powder slurry, regenerated fine aggregate and natural sand are pre-stirred in a mixer for 80s, then water-retaining thickener and setting time regulator water are added, and the forced stirring is continued for 150s.

[0057] (3) Take a certain amount of wet-mixed mortar for the test, and test its performance indicators as shown in Table 4:

[0058] Table 4 Test results of performance indicators of wet-mixed mortar

[0059]

[0060] From the results shown in Table 4, it can be seen that the recycled wet-mixed mortar meets the requirements of the M15 strength grade, and its performance indicators meet the requirements for wet-mixed mortar in the "Ready-mixed Mortar" GB / T25181-2010. Can be used for masonry and plastering.

Embodiment 3

[0062] (1) Take a certain amount of raw materials by the mix ratio shown in Table 5:

[0063] Table 5 Mixing ratio of recycled wet-mixed mortar (unit: kg)

[0064]

[0065] (2) The weighed cement, limestone powder slurry, regenerated fine aggregate and natural sand are forced to stir in the mixer for 60s in advance, then add water-retaining thickener, setting time regulator and water, and continue to stir for 120s.

[0066] (3) Take a certain amount of wet-mixed mortar for the test, and test its performance indicators as shown in Table 6:

[0067] Table 6 Test results of performance indicators of wet-mixed mortar

[0068]

[0069] From the results shown in Table 6, it can be seen that the recycled wet-mixed mortar meets the requirements of M10 strength grade, and its performance indicators meet the requirements of various indicators for wet-mixed mortar in "Ready-mixed Mortar" GB / T25181-2010. Can be used for masonry and plastering.

[0070] Those of ordinary skill in ...

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Abstract

The invention discloses recycled wet-mixed mortar and a preparation method thereof. The recycled wet-mixed mortar is prepared from the components in parts by weight as follows: 180-260 parts of cement, 130-240 parts of limestone flour slurry with the moisture content being 30%-60%, 380-650 parts of recycled fine aggregate, 650-900 parts of natural medium sand, 2.7-3.9 parts of a water-retention thickener, 0-3.0 parts of a setting time regulator and 120-210 parts of water. The recycled fine aggregate produced with waste concrete test cubes through crushing is applied to wet-mixed mortar, a technical method of pre-stirring of the recycled fine aggregate and stone powder slurry as well as utilization of a special additive is used, the problems of high water absorptivity of the recycled fine aggregate, and quick workability loss, reduced strength and the like are solved; not only is the problem of treatment of waste concrete test cubes solved, but also higher economic benefit is produced.

Description

technical field [0001] The invention specifically relates to a recycled wet-mixed mortar and a preparation method thereof. Background technique [0002] Fujian Province is rich in stone resources, and the production and sales volume of stone has ranked first in the country for many years in a row. There are many stone processing, production and sales enterprises that have come along with it, and Fujian Nan'an has become the largest stone processing base in the country. Due to the low utilization rate of stone, processing A large amount of waste limestone powder slurry is produced in the process. Due to the random discharge of waste limestone powder, the dust pollution and river pollution in the surrounding areas are serious, and it has become a disaster area for environmental protection. The comprehensive utilization of waste limestone powder has become an urgent problem to be solved in the field of environmental protection in Fujian Province. [0003] Ready-mixed concrete ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/16C04B14/28
CPCC04B14/28C04B18/16C04B28/04C04B2201/50C04B14/068C04B24/24C04B24/383C04B2103/50C04B2103/22C04B2103/0068C04B24/045C04B22/002Y02W30/91
Inventor 陈超徐仁崇连亚明戴鹏王伟石莹
Owner XIAMEN TIANRUN JINLONG BUILDING MATERIAL
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