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Mortar preparation method

A technology of mortar and mix ratio, which is applied in the field of mortar mix ratio, can solve problems such as difficult control of technical rules, large actual access and large changes in bulk density, etc.

Active Publication Date: 2017-12-08
四川省三台县波特兰商品砼有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (1) There is no relationship between the strength of the mixed mortar preparation and the change in the standard deviation of the mortar strength; (2) There is no direct relationship between the amount of cement and the water-binder ratio; (3) The cementitious material is too simple to be 350kg per square and the actual difference is large; (4) According to the bulk density of sand per cubic meter, the amount of sand is used. First, the bulk density of sand varies greatly, and second, the practice is also quite different from the actual situation; (5) water consumption is the range, and the consistency is also the range. The result of range to range is Greatly increase the difficulty of mortar configuration and trial mixing time; (6) The preparation of on-site cement mortar is to determine the amount of cement, fly ash, sand, and water for trial mixing after the range selection table is directly given in the regulations, and the scope is larger Make it more difficult for mortar technicians to control its inherent technical laws

Method used

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Embodiment

[0222] Taking the preparation of ordinary M5 mixed masonry mortar as an example, the construction level is average, and the block material is sintered ordinary brick (wet before use). More than 8 hours, compressive strength ≥ 5Mpa, good workability, the proportioning method includes the following steps:

[0223] (1) Initially determine the net slurry and measure the density:

[0224] 1. Select the raw materials for the clean slurry: choose National University 42.5 cement for cement, medium sand and lime paste for sand, and special mortar admixture for admixture.

[0225] 2. Determination of raw material indicators: the standard deviation of the mortar strength is not greater than 1.25 according to the specification, and the actual statistical standard deviation is 1.2, which meets the requirements. Cement adequacy coefficient statistics 1.1, test admixture water-reducing rate 23%, admixture test to determine 3%, measured admixture solid content 27%, lime paste consistency tes...

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Abstract

The invention discloses a mortar preparation method. The method comprises the steps as follows: (1) the neat slurry amount is determined initially and the density is measured; (2) fine aggregate and the amount are determined; (3) the initial standard mix proportion of mortar is determined; (4) premixing is performed according to the initial standard mix proportion and the workability is detected; (5) the production mix proportion is determined and premixing detection is performed. Fine aggregate and neat slurry are mixed, local materials are used according to fluctuation of raw materials as well as influence of production and construction links, actual raw material detection data are based, divorcing from reality due to the use of empirical data is avoided, and the effects that the quality is controllable, the cost is reduced and the resources are saved can be realized.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for mixing mortar. Background technique [0002] Mortar is a building material made of fine aggregate and cementitious materials mixed with water. It is divided into two categories in terms of use: masonry mortar and plastering mortar. Masonry mortar is made of stone, brick, block, etc. The blocks are built into masonry, and the mortar that plays the role of bonding, lining and force transmission, and the plastering mortar is mainly used for the decoration of the masonry surface. In addition, mortar with cement as the main cementitious material can be divided into mixed mortar and cement mortar. [0003] Mortar has a wide range of applications in the current market. Masonry houses are widely distributed. Mortar is used in the walls of many high-rise buildings and in the decoration of all houses. According to preliminary statistics, it accounts for about 50% o...

Claims

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Application Information

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IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/00198
Inventor 龙凤全
Owner 四川省三台县波特兰商品砼有限公司
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