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再生混凝土砌块抗压强度试验研究

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文中主要针对不同掺量粉煤灰、钢纤维及再生骨料取代率对再生混凝土砌块抗压强度影响展开研究.结果表明,不同掺量的粉煤灰对混凝土强度产生明显负面影响,且粉煤灰掺量越大,抗压强度下降幅度越大,推荐粉煤灰掺量控制在 15%~30%,能够在保持抗压强度达标的同时,降低材料造价;再生骨料抗压强度水平随再生骨料取代率的提升而逐渐降低,混凝土承载力极限值也随之逐渐降低.
Experimental Study on the Compressive Strength of Reclaimed Concrete Block
In this paper,the effects of different content of fly ash,steel fiber and recycled aggregate substitution rate on the compressive strength of recycled concrete blocks were studied.The results show that different fly ash content has a significant negative impact on concrete strength,and the greater the fly ash content,the greater the decrease in compressive strength,it is recommended to control the fly ash content in the range of 15%~30%,which can maintain the compressive strength standards and reduce the cost of materials.The compressive strength level of recy-cled aggregate decreases gradually with the increase of recycled aggregate substitution rate,and the limit value of concrete bearing capacity also decreases gradually.

Fly ashRecycled aggregateRecycled concreteCompressive strengthBlock performance

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贵州建工监理咨询有限公司,贵州 贵阳 550009

粉煤灰 再生骨料 再生混凝土 抗压强度 砌块性能

2024

江西建材
江西省建材科研设计院

江西建材

影响因子:2.247
ISSN:1006-2890
年,卷(期):2024.(5)