相关实验视频

Updated: Jun 3, 2025

Sandy Soil Improvement through Microbially Induced Calcite Precipitation MICP by Immersion

Sandy Soil Improvement through Microbially Induced Calcite Precipitation MICP by Immersion

Published on: September 12, 2019

关于聚烯纤维增强料混凝土混凝土机械性能和碳排放分析的研究

Fei Li¹, Shenghao Jin², Peifeng Cheng²

¹Changda Construction Technology Co., Ltd., Weifang 261205, China.

|January 8, 2025

概括

本研究探讨使用再生红聚合物与聚烯纤维 (PPF) 来制造更坚固,更可持续的混凝土. 以50%的回收料和0.1%的PPF实现最佳性能,平衡废物利用和机械性能.

科学领域:

材料科学材料科学材料科学
土木工程土木工程是指土木工程.
可持续建筑可持续建筑

背景情况:

建筑垃圾,特别是红,是一个严重的积累问题.
回收聚合物为在新建筑材料中废物利用提供了潜在的解决方案.
聚烯纤维 (PPF) 可以增强混凝土的机械性能.

研究的目的:

研究用PPF增强的回收料混凝土的机械性能.
为了确定回收料和PPF含量的最佳替换率.
评估环境影响并开发预测强度模型.

主要方法:

准备15组混凝土样本,使用不同的回收聚合物的替换率和PPF数量.
机械测试包括立方体压缩,轴向压缩和四点曲测试.
生命周期评估 (LCA) 用于碳排放分析和机械转换模型的开发.

主要成果:

在50%的回收聚合物更换率下观察到最佳的机械性能,在更高的速度下回报率下降.
PPF有效地减轻了循环聚合物的强度降低,这归因于其纤维桥梁效应.
一个机械转换模型在预测性能方面表现出高精度 (R2 ≈ 0.90),考虑到纤维增强和聚合物减弱.

结论:

用PPF增强的回收料混凝土混凝土提供了优良的机械性能和可持续性,在50%的混凝土替换和0.1%的PPF.
开发的强度转换模型为预测性能提供了强大的适应性.
这种方法有效地实现了废物回收和强度提升,促进了建筑中的循环经济原则.

关键词:

碳排放评估碳排放评估纤维回收混凝土回收混凝土强度转换关系的强度转换关系.机械属性机械属性机械属性聚乙烯纤维纤维的使用情况回收的块聚合物回收块.

更多相关视频

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties

Published on: June 7, 2020

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior

Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior

Published on: June 27, 2018

相关概念视频

Fiber Reinforced Concrete

Fiber Reinforced Concrete

Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...

Brick Durability, Strength, and Appearance

Brick Durability, Strength, and Appearance

Brick durability, strength, and appearance are crucial factors in construction, influencing the choice of bricks for specific applications. The process of freeze-thaw, for instance, significantly affects brick durability. This phenomenon occurs when water absorbed by a brick expands as it freezes, potentially causing damage when it melts and refreezes. Bricks are graded for durability: SW-grade bricks are the most durable, offering high strength and low water absorption, followed by MW-grade...

Abrasion Resistance of Concrete

Abrasion Resistance of Concrete

Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...

Aggregate Cement Ratio

Aggregate Cement Ratio

The Aggregate Cement ratio refers to the weight of aggregate divided by the weight of cement in a concrete mix. Altering this ratio has profound effects on the concrete's properties. This ratio plays a pivotal role in determining the strength, workability, and durability of concrete. When the Aggregate Cement ratio is higher, the mix is leaner, meaning it has less cement paste to lubricate the aggregate, potentially making the concrete less workable. Such mixes, known as lean, enhance the...

Reinforced Brick Masonry

Reinforced Brick Masonry

Reinforced brick masonry is an advanced construction technique that enhances the structural integrity of brick walls by incorporating steel reinforcements. These reinforcements are either placed within the hollow cores of bricks or sandwiched between two layers of masonry, known as wythes, and are then secured in place with grout. Grout is a fluid mixture composed of Portland cement, aggregate, and water, providing the necessary bonding agent for the steel and brick.
To fortify brick walls...

Brick Classifications

Brick Classifications

Bricks, a fundamental component of construction, are categorized based on their application and structural characteristics into several types. These include facing bricks, building bricks, hollow bricks, paving bricks, and firebricks. Facing bricks, also referred to as face bricks, are primarily used for both structural support and visual appeal, making their appearance a crucial aspect. In contrast, building bricks are typically used in concealed sections of a structure, such as behind the...