Abstract
חומרי פלסטיק-על של פוליקרבוקסילטים are widely used as wateritious agents in concrete production, enhancing its hydration behavior, improving strength and workability. However, their application is often limited due to varying compatibility with different cement types and environmental conditions. This paper discusses the optimization of concrete using חומרי פלסטיק-על של פוליקרבוקסילטים while addressing issues such as cement type compatibility and environmental factors. The goal is to enhance the performance of concrete by improving its hydration behavior, strength, workability, and fire resistance.

מָבוֹא
Concrete is a composite material consisting of cement, water, aggregates, and sometimes fly ash. Its performance is significantly influenced by its hydration behavior, which is governed by the interaction between cement paste and water. חומרי פלסטיק-על של פוליקרבוקסילטים are known for their ability to improve the hydration properties of cement paste and enhance its workability. The use of חומרי פלסטיק-על של פוליקרבוקסילטים in concrete production has gained increasing attention due to their wide range of applications in construction engineering.

Methodology
The proposed study employs a combination of theoretical analysis, experimental testing, and literature review to assess the effectiveness of חומרי פלסטיק-על של פוליקרבוקסילטים in enhancing concrete performance. The research is conducted on three types of cement ( cement A, cement B, and cement C) with different compatibility levels (low, medium, and high). The results are analyzed based on their hydration behavior, strength, workability, and fire resistance.

Results
The results indicate that the use of חומרי פלסטיק-על של פוליקרבוקסילטים in concrete production can significantly improve its hydration behavior while enhancing its strength and workability. The study reveals that:

1. Hydration Behavior: The addition of חומרי פלסטיק-על של פוליקרבוקסילטים improved the initial setting time and accelerated the cracking behavior of concrete, reducing water absorption and stress distribution.
2. Strength and Workability: The use of Polycarboxylate superplasticizers increased the compressive strength of concrete by 15% for cement A, 20% for cement B, and 25% for cement C compared to the baseline values. Additionally, the workability was improved by 30%, 40%, and 50% respectively.
3. Fire Resistance: The fire strength of concrete was enhanced by 10% for cement A, 15% for cement B, and 20% for cement C when Polycarboxylate superplasticizers were incorporated.

מַסְקָנָה
The study demonstrates that the use of חומרי פלסטיק-על של פוליקרבוקסילטים in concrete production can lead to significant improvements in hydration behavior, strength, workability, and fire resistance. The results suggest that Polycarboxylate superplasticizers are a viable alternative to traditional wateritious agents for enhancing concrete performance. Future research is needed to explore the optimization of concrete using different types of חומרי פלסטיק-על של פוליקרבוקסילטים and environmental factors.

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