Method of preparing mortar additive, mortar additive and method for preparing mortar by employing the same

Abstract

The invention provides a preparation method of sand pulp additive, namely the sand pulp additive and the method which adopts the sand pulp additive to prepare the sand pulp. The sand pulp additive is produced through weighing, crashing, mixing, heating, pressurizing and drying, and comprises the weight portion components: 1 to 8 portions of cellulose ether and compound thereof, 1to 4 portion of starch ether, 0 to 3 portions of polyvinyl alcohol, and 0 to 2 portions of mealiness defoaming agent. The sand pulp additive is dissolved in clear water to form glue solution with glutinosity, and the glue solution can organically combine cement sand pulp to form a netted texture, which improves the water conservation performance and binding power of the sand pulp and avoids phenomena that surface sand pulp is convex and drops off, and laitance coating falls, without water seepage. The preparation method is easy, and source of feed is wide. The method which adopts the sand pulp additive to prepare the sand pulp comprises weighing and preparing sand pulp additive dissolved in water, preparing building blocks, and preparing the sand pulp, and the surface of construction has no season check and no shrink; the preparation method has few working procedure and is simple.

Description

technical field [0001] The invention relates to a preparation method of a mortar additive, a mortar additive and a method for preparing mortar using the mortar additive. Background technique [0002] At present, new wall masonry materials made of cement as the main cementing material, which meet the requirements of wall reform for energy saving, soil saving, and waste utilization, mainly include lime sand bricks, autoclaved aerated concrete blocks, and hollow blocks. , Concrete hollow bricks, etc. The above blocks are used in a variety of building constructions. The walls made of the above-mentioned new wall masonry materials are called new block walls, but the resistance of such blocks to mortar and The requirements for workability, cohesion and water retention are high, especially the dry construction method currently used, directly adding mortar to the dry block without spraying water on the block to improve the bonding performance of the mortar. This requires the mortar...

AI Technical Summary

Problems solved by technology

The new type of wall constructed by the wet construction method generally has the disadvantages of wall fracture and shrinkage after construction; the plaster layer after the construction of the wet wall plaster generally has problems such as cracking, hollowing, and falling off, which shows that the traditional The wet construction method is difficult to meet the basic mechanical performance requirements of the new wall, and it also has a great negative effect, the most notable is that the water content of the wall soars, which in turn leads to the continuous shrinkage and cracking of the wall after completion

At the same time, the existing wet construction method needs to consume a lot of water resources when pre-watering wet bricks and wet walls and keeping the mortar wet after construction. It also needs to consume a certain amount of manpower and working hours, which increases the project cost The construction period is delayed; and because of the insufficient cohesive force of the mortar, the mortar is easy to fall off and be discarded during the application: 1: The process wastes materials and causes environmental pollution

The water retention of the existing wet construction mortar is also poor, and artificial wet water is required before and after construction, and the effect of wet water is unstable. Labor intensity

Therefore, there are significant shortcomings and deficiencies in the wet construction method of the existing novel block wall.

Corresponding to it is the dry construction method, that is, there is no need to wet the block material or the wall base surface with water in advance, but to use the dry material directly, or to directly apply the secondary construction on the dry wall base surface, and there is no need to repair the wall body after the second construction. It is a building construction method that wets the mortar on the surface. At present, there is no more scientific and standardized solution for dry construction technology, which is not conducive to the promotion and popularization of dry construction technology.

[0004] Among the commercial dry powder mortars on the market, additives such as thickeners are directly added and blended together according to the formula ratio, and transported to the construction site, add water and stir for a few minutes to form the ready-mixed mortar we need. Because the mixing time is not long enough, it is not ready. Can really give full play to the thickening and bonding performance of the additive