How to calculate building admixtures in the project budget! What are the construction admixtures and where are they used?

1. Admixtures are generally listed as supplementary subheadings, and only the material cost is calculated. For example, if impermeable concrete S6 is added with expansion agent, the weight calculated according to the proportion (according to the proportion notice in the experimental data) is the engineering quantity, and the unit price needs to be certified by Party A. Admixtures are generally found in concrete, such as impermeable expansion agents, pumping agents, waterproofing agents, and early-strength antifreeze agents. Sometimes a waterproofing agent is also added to the mortar. The pumping agent is included in the sub-category of pumping additional materials, but the quota consumption can be adjusted according to the construction mix ratio.

2. The engine oil and formwork oil you mentioned are applied on the surface of the formwork for release. They are called release agents. This quota is already included. There are finished products in the market, and waste products are sometimes used on the construction site. Use engine oil and water instead of release agent.

If you don’t understand the problem, you can ask the field technician or chief engineer for help. It’s a very simple question.

Hope it helps.