What is polymer cement slurry, and what exactly is a polymer
Let's take a look at what's in the dictionary
Aggregation - come together。
So polymers are literally supposed to be objects that come together。
By analogy, the textual meaning of polymer cement slurry should be a slurry incorporating polymers into the concrete slurry。
With the above explanation, it is easy to understand and remember the following official explanation。
I. Context
Polymetallic cement slurry: a new construction material, based on ordinary cement slurry, modified by mixing into specific polymer components (e. G. Polymer emulsions, powders, etc.). Through the “modified effects” of polymers, it has significantly enhanced key capacities such as viscosity, flexability and permeability, and has been widely applied to waterproofing, cosmetics and structural repair of buildings。
Ii. Rationale
The presence of a large number of small voids and corrosive structures in the body following the hardening of ordinary cement slurry results in poor viscosity of ordinary cement slurry and is less open to fragmentation. The inclusion of polymers in ordinary cement slurry can effectively solve the problem, as follows:
Mixed dispersion phase: when polymers (e. G. Emulsions) are mixed with cement, bone, water, they are evenly dispersed in the slurry system, and water is packaged with mud particles and bone surfaces, forming “polymers-cement-bones”。
2. Hydraulic and membrane phase: cement reacts hydrolyticly in water to produce crystals of strength such as calcium hydrosilicate (c-s-h); at the same time, water evaporates gradually, polymer particles accumulate and merge, forming continuous polymer film within the slurry。
Stereo-network formation: cement crystals form rigid “bonestoform” after hardening, and polymer thin membranes fill the micro-pores in the skeleton and form “soft glue layer” at the bone and cement interfaces, ultimately forming a composite structure of “sine skeleton + soft network” - both to retain strength and to overcome fragility。
Classification
Based on the "polymers" form, the polymer cement slurry can be divided into emulsions and dry powders。
Classification by function and use
Summary
The core value of polymer cement slurry is that “the advantage of polymers to compensate for a short plate of ordinary slurry” is a multifunctional material of “high strength + softness + high glue”. It not only addressed the pains of the traditional cement slurry in waterproofing, glued, fracking, etc., but also simplified the construction process (e. G., only water for single-assembly dry powder) and was therefore increasingly used in modern construction, renovation and maintenance works. The selection needs to match the corresponding type and formulation according to the specific scene (e. G. Waterproofing, patching, pasting) and the construction conditions (e. G. Whether the site is convenient for mixing lotion)。
