PRODUCTS
HIGH-QUALITY CHEMICAL TECHNOLOGY MANUFACTURER
Professional concrete suppliers
More Professional
Xingzhenghe is one of the largest manufactures of superplasticizers. Our Annual output is over 150,000 Mts.
Quality trust
Products have been sold to more than 60 countries, such as South Korea, Japan, Vietnam, Indonesia, Australia, Canada, Russia, Saudi Arabia etc.
Fast delivery
warehouses are set up in major ports for more timely delivery , in Tianjin,Qingdao,Shanghai, Guangzhou,and other places with branches (offices) and foreign trade transit warehouse.
Expansion agents
Expansion agents are a type of additive in concrete that primarily induce volumetric expansion. This effect is typically achieved by generating bubbles or gases within the concrete matrix.
Expansion agents
| Item |
Specifications |
|
| Stability of pulp | √ | |
| Ratio of bleeding rate,%≤ | 50 | |
| Condensation time difference,min≥ | The initial setting | -90 |
| The final setting | —— | |
| Ratio of compressive strength,%≥ | 3d | 100 |
| 7d | 110 | |
| 28d | 100 | |
| Penetration height ratio,%≤ | 30 | |
| 48h Water absorption ratio,%≤ | 65 | |
| Corrosion of reinforcing steel | × | |
| Restrained expansion rate% | In the water 7d≥ | 0.025 |
| In air 21d≥ |
-0.020 |
|
Firstly, the introduction of expansion agents effectively controls the density of concrete. The incorporation of bubbles reduces the density, allowing for lightweight structural design, particularly beneficial in scenarios where structural weight is a critical consideration, such as in large-span structures and lightweight architectural designs.
Secondly, the application of expansion agents significantly enhances the concrete’s resistance to temperature differentials. The presence of bubbles enables the concrete to better withstand thermal expansion and contraction, effectively minimizing cracks and damage caused by temperature variations, thereby improving the durability of the concrete.
Additionally, expansion agents contribute to the improvement of concrete’s resistance to permeability and corrosion. The formation of micro-pores through the distribution of bubbles slows down the penetration of water and harmful substances, thereby enhancing the overall performance of concrete.