城市焚烧底灰和PET颗粒部分替代水泥砂浆中的细集料

Partial Replacement of Municipal Incinerated Bottom Ash and PET Pellets as Fine Aggregate in Cement Mortars.

作者信息

Phutthimethakul Lalitsuda, Supakata Nuta

机构信息

International Program in Hazardous Substance and Environmental Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand.

Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.

出版信息

Polymers (Basel). 2022 Jun 27;14(13):2597. doi: 10.3390/polym14132597.

DOI:10.3390/polym14132597

PMID:35808643

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9269149/

Abstract

The objective of this study was to examine the optimal mixing ratio of municipal incinerated bottom ash (MIBA) and PET pellets used as a partial replacement of fine aggregates in the manufacture of cement mortars. As a partial replacement for sand, 15 mortar specimens were prepared by mixing 0%, 10%, 20%, 30%, and 40% municipal incinerated bottom ash (MIBA) (A) and 0%, 10%, and 20% PET pellets (P) in 5 cm × 5 cm × 5 cm cube molds. The cement/aggregate ratio was 1:3, and the water/cement ratio was 0.5 for all specimens. The results showed that the compressive strength of cement mortars decreased when increasing the amount of MIBA and PET pellets. The mortar specimens with 10% PET pellets achieved the highest compressive strength (49.53 MPa), whereas the mortar specimens with 40% MIBA and 20% PET pellets achieved the lowest compressive strength (24.44 MPa). Based on this finding, replacing 10% and 20% sand in cement mortar with only MIBA or only PET pellets could result in compressive strengths ranging from 46.00 MPa to 49.53 MPa.

摘要

本研究的目的是研究城市焚烧底灰（MIBA）和PET颗粒作为细集料的部分替代品用于水泥砂浆制造时的最佳混合比例。作为沙子的部分替代品，通过在5厘米×5厘米×5厘米的立方体模具中混合0%、10%、20%、30%和40%的城市焚烧底灰（MIBA）（A）以及0%、10%和20%的PET颗粒（P）制备了15个砂浆试件。所有试件的水泥/集料比为1:3，水/水泥比为0.5。结果表明，随着MIBA和PET颗粒用量的增加，水泥砂浆的抗压强度降低。含10%PET颗粒的砂浆试件抗压强度最高（49.53MPa），而含40%MIBA和20%PET颗粒的砂浆试件抗压强度最低（24.44MPa）。基于这一发现，仅用MIBA或仅用PET颗粒替代水泥砂浆中10%和20%的沙子，抗压强度范围可为46.00MPa至49.53MPa。