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Main types of common water reducing agents
1. Lignosulfonate It can be subdivided into three components: calcium lignosulfonate, sodium lignosulfonate, and magnesium lignosulfonate. The order decreases from calcium salt to magnesium salt, but …
Uses of ordinary water reducing agents
Ordinary water reducing agent is suitable for all kinds of cast-in-place and precast (without steam curing process) concrete, reinforced concrete and prestressed concrete; ordinary strength concrete. …
Performance of ordinary water reducing agent
Ordinary water-reducing agents have a good dispersion effect on cement and other cementitious materials in water, thus improving the fluidity of cement mixtures and reducing water consumption while ma…
What are the regulations on the representative batch size of concrete admixtures?
1. Concrete admixtures based on the GB8076 standard of “Concrete Admixtures”: each number of the same type of admixture with a content of ≥1% is 100 tons, and each number of admixtures with a content …
Standards, specifications, procedures and regulations related to concrete admixtures
1. “Classification, naming and definition of concrete admixtures” GB8075-20052. “Concrete admixtures” GB8076-20083. “Concrete admixture uniformity” Qualitative Test Methods》GB8077-20004. “Concrete Pum…
Names and definitions of concrete admixtures with different functions
According to the national standard GB8075-2005, 27 types of concrete admixtures are defined. They are:1. Ordinary water-reducing admixtures: When the slump of concrete is basically the same, it can re…
Classification of concrete admixtures
Concrete admixtures are divided into four categories according to their main functions: 1. Admixtures that improve the rheological properties of concrete mixtures. Including water reducing agent, air …
How to choose sand for construction mortar
The aggregates in the mortar are inert materials that do not participate in chemical reactions and play the role of skeleton or filler in the mortar. The density of the mortar can be adjusted through …
What are the requirements for the mud content and mud lump content of sand in construction mortar?
Mud content refers to the content of particles with a nominal particle size less than 80um in the aggregate. The mud content of sand refers to the content of particles in the sand that have a nominal …
What are the fine aggregates used in construction mortar?
Fine aggregates for construction mortar include natural sand and artificial sand. Natural sand refers to rock particles formed by natural conditions and with a nominal particle size less than 5.00mm. …
