MATERIALES DE CONSTRUCCION

A.G.B. Paula e Silva, M.V. De Souza, F.R. Rodrigues, V.A. De Araujo et al.

The use of recycled polyethylene terephthalate (PET) with pine wood shavings was analyzed in the particleboard manufacture using hot-pressing. 160 °C was considered to avoid moisture build-up in the resin structure and polymer degradation and, property losses. 50% Pine with 40% PET and 10% polyurethane resin (PUR) and 50% Pine with 50% PET and 0% PUR were studied traits. Densit…

R.F. Nascimento, M.A.S. Anjos, J.P. Nascimento Júnior, L.R. Pessoa et al.

The present study aims to expand the understanding of cementitious mixtures with low cement content and high levels of mineral additions and aggregates in order to assess their influence on the constructive characteristics of printing elements representative of structural masonry. The printing parameters and geometry of the pieces were defined to create a structure that can sta…

J.R. Chang, Y.Y. Lo

In response to the global trend towards achieving net zero emissions, various industries are actively promoting the circular economy. Central to this goal is the strategic utilization of alternative materials to replace virgin materials, thereby reducing carbon emissions during the production and manufacturing processes. This study uses the maximum density line in the FHWA 0.45…

H.A. Rondón-Quintana, W.D. Fernández-Gómez, E.H. Sánchez-Cotte

The present study evaluated the mechanical performance of a warm-mix asphalt (WMA) by partially replacing the coarse fraction of natural aggregates (NA) with recycled concrete aggregates – RCA. To manufacture the WMA, a sodium silicate (SS) was used to modify and foam the asphalt cement (AC). SS is presented as a novel additive that has not been investigated by the technical an…

F. M. Lima, M. A. S. Dos Anjos, I. M. S. Barros, U. S. Nunes

This paper investigates the use of sandy silt in 3D printing by stabilizing it with Portland cement and chemical additives (metakaolin and limestone filler). The goal is to make the soil compatible with the 3D printing process and ensure pumpability. The experimental program began with a reference mixture of soil to cement in a 1:1 mass ratio to achieve a consistency suitable f…

A. Hawa, P. Salaemae

Geopolymer mortar from fly ash (FA) and field Para rubber latex (FPRL) with alkaline activators was exposed to 5% magnesium sulfate and sulfuric acid for 90 days with compressive strength. Key parameters assessed include compressive strength, expansion, degradation products, and microstructural changes, analyzed using X-ray diffraction (XRD) and scanning electron microscopy (SE…

J. Manovel, A. I. Fernández-Abia, M. A. Castro-Sastre

With the aim of manufacturing a clinker that reduces the energy consumption in its grinding, without substantially modifying the behavior of the cement manufactured with it, a characterization methodology based on the Rietveld method has been developed. From this study we have deduced that one of the most influential factors in the specific consumption of the cement mill is the…

F, Amor, H. Agourrame, Z. Racova, N. Khachani et al.

This study presents a self-cleaning cement incorporating zinc oxide and titanium dioxide nanoparticles, used alone or in combination. The objective is to develop high-performance materials suitable for different environments, inhibiting fungal growth while providing self-cleaning properties. In parallel, the impact of these nanoparticles on the mineralogy and structure of C-S-H…

T.M. Oliveira, L.F. Jochem, C.A. Casagrande, R.D. Sakata et al.

Concrete batching plants generate various types of waste, including residual slurry from the washing of ready-mix concrete trucks. This study aimed to analyze the mechanical properties of concrete produced with partial substitution (10%, 20%, and 30%) of the binder by the solid waste generated from washing ready-mix concrete trucks. Waste was physically and chemically character…

C. Yan, C. Sun, J. Zhang, R. Bai et al.

To optimize resource utilization of bulk industrial solid waste and promote low-carbon production in the cement industry, the belite-ye’elimite cement (BSAC) clinker was prepared entirely from solid waste materials (carbide ash, coal gangue, steel slag, desulfurization gypsum). The mineral formation process of the clinker was systematically analyzed. Findings reveal that within…

Jana Dankova, P. Mec, R. Gabor, D. Bujdoš et al.

Roman cement is the predecessor to modern Portland cement. Nowadays, it is a very promising product with lower CO2 emissions, frequently used to restore historical objects. However, there are still many practical problems as a setting that can be affected in several ways. One possibility is the multistage mixing of fresh mortar, a practical historical method that has not yet be…

S. Sharma, S. Bawa

Geopolymer concrete is an eco-friendly alternative to cement concrete that reduces carbon emissions through the utilisation of industrial waste. This study enhances its sustainability by incorporating recycled asphalt pavement (RAP) aggregates as partial replacements for natural coarse aggregate at 0%, 20%, 40%, 60%, 80%, and 100%, using fly ash and dolomite as binders. The ana…

W. Mera, M.C. Rubio-Gámez, F.M. Moreno-Navarro, G. García-Travé et al.

Growing environmental awareness of the depletion of finite natural resources (gas, fuel, etc.) and the continuous rise in greenhouse gas emissions (NOx, CO, CO2, etc.) has driven the road engineering industry to develop technologies for producing asphalt mixes at lower temperatures than traditional hot mix asphalt (HMA). Warm mix asphalts (WMAs) offer a viable alternative to co…

Y. Huang, H. Liu, G. Liu

In this paper, the effects of basalt fiber aspect ratio (BFA), basalt fiber content (BFC) and polypropylene fiber content (PFC) on the basic mechanical properties of basalt-polypropylene hybrid fiber reinforced concrete (BPHFRC) were studied by orthogonal test. Furthermore, the failure mode of concrete were examined by scanning electron microscope (SEM). The results show that m…

R. Padilla-Ceniceros, J. Pacheco-Martínez, W.H. Herrera-León, M. Hernández-Marín et al.

Este estudio emplea la Tomografía de Resistividad Eléctrica (ERT) para analizar la dinámica de la humedad en un muro de adobe de la Casa Terán, un edificio histórico en Aguascalientes, México. Al modificar la técnica ERT con electroestimuladores médicos, el estudio identifica las causas y los patrones de propagación de la humedad según las propiedades del material. También se r…

L. Wang, H. Fang, P. Chen, Z. Zong et al.

This study proposed thermal activation to activate copper tailings and investigated the effects of the temperature of thermal activation on the hydration properties, pore structure, and compressive strength of thermally activated CT (TCT) pastes. The results indicate that thermal activation slightly refines the particle size of CT and induces the decomposition of CaCO3, leading…

V. Zalar Serjun, S. Dolenec, M. Dolenec, A. Mladenovic et al.

Waste from one industry can often serve as raw material for another. Previous research has shown that sewage sludge stabilized with biomass ash can form a construction composite with “Controlled Low-Strength Material” properties. This study focuses on the microstructural properties of such composites over time, investigating changes in phase composition and pore size distributi…

L.M. Abril Moreno, L.E. Zapata Orduz

The construction sector seeks to enhance efficiency and reduce Portland cement use due to its environmental impact. Selfcompacting concrete (SCC) is a sustainable option as it can incorporate waste materials as substitutes for conventional components. The objective of the research was to analyze the rheological properties of SCC by adding waste foundry sand (WFS) and ground gra…

A. Yusuf, I. Sandi Darma, E. Zulkifli, R. Pradoto

Superabsorbent polymers (SAP) are powdered chemical mixtures with the potential to significantly impact of cement-based materials in both fresh and hardened states. SAP’s ability to absorb and release water makes it suitable for internal curing, preventing unhydrated cement, and influencing the hydration process. This study aimed to evaluate the SAP as an internal curing medium…

R. Feng, C. Yan, X. Wang, L. Jing et al.

Coal gangue (CG) and fly ash (FA) were utilized to prepare CG-FA aggregate (CFA). The CFA concrete (CFAC) was produced by replacing natural pumice aggregate (NPA) with CFA. The optimal calcination parameters of CFA were obtained by orthogonal test with thermal conductivity (TC) as evaluation criterion. The TC, pore structure and micromorphology were tested to characterize therm…