E3S Web Conf.
Volume 198, 20202020 10th Chinese Geosynthetics Conference & International Symposium on Civil Engineering and Geosynthetics (ISCEG 2020)
|Number of page(s)||3|
|Section||Geosynthetics Applied Design Theory and Method|
|Published online||26 October 2020|
Research on the performance of recycled concrete powder self-leveling mortar based on orthogonal experiment
College of Civil Engineering and Architecture, Shandong University of Science and Technology, 266590, Qingdao, Shandong.
* Corresponding author: firstname.lastname@example.org
Waste concrete in the construction waste is reprocessed into concrete sand and powder . Recycled concrete sand with a particle size between 0.15 and 0.25mm partially replaces natural sand, and the recycled concrete powder with a particle size less than 0.075mm partially replaces cement. The five-factor four-level orthogonal experiment was used to study the replacement amount of recycled concrete powder, the replacement amount of recycled concrete sand, the amount of dispersible latex powder, the amount of polycarboxylate water-reducing agent, the ratio of bone cement, and the five factors on the fluidity of self-leveling mortar. The influence of the three performance indicators of bond tensile strength and dimensional change rate; through the range analysis of the above indicators. The analysis results show that the content of recycled concrete powder instead of cement has the greatest impact on the tensile bond strength and dimensional change rate of recycled concrete powder self-leveling mortar, and the content of Polycarboxylate Superplasticizer has the greatest influence on the fluidity.
© The Authors, published by EDP Sciences 2020
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