Effect of water curing duration on strength behaviour of portland composite cement (PCC) mortar

Caronge, Muhammad Akbar; Tjaronge, M. W.; Hamada, H.; Irmawaty, Rita

doi:10.1088/1757-899x/271/1/012018

Cited by 24 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this uniform behaviour was interrupted concerning the flexural strength of all sample categories from 28 to 90 ageing days, when a decrease of about 3%, 9% and 1% was observed (for C'R, C'pn and C'fs mortars, respectively). The specific improvement in mortar mechanical properties could be attributed to the hydration process of cement and the curing conditions, as the wet environment provides the humidity required for the hydration of the non-hydrated compounds [45,46]. Moreover, the flexural strength reduction from 28 to 90 days is probably associated with the corresponding porosity increase in the samples (Table 2).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Evaluation of Hydrothermally Treated Wood Fibre Performance in Cement Mortars

Kampragkou,

Kamperidou,

Stefanidou

2024

Fibers

View full text Add to dashboard Cite

Biofibres’ wide application in mortar enhancement has thus far been restricted by factors related to their chemical composition and hygroscopic nature. Their hydrophilic behaviour increases the water demand of mortar mixtures and diminishes their affinity to the matrix, while further moisture-related fibre degradation issues may arise. Additionally, natural fibres seem to be susceptible to degradation caused by exposure to alkaline environmental conditions such as those experienced by cement mortars, restricting their utilisation in the construction industry. Therefore, the current study investigates the potential of fibre modification through treatments that would permanently alter their structure and chemical composition to improve their performance. In this study, wood fibres of black pine and beech species were exposed to mild thermal treatment (140 °C 2 h, under a steam atmosphere), characterised in terms of the physical and chemical properties and incorporated in cement mortars, applying the proportion of 1.5% v/v in the mortar, in order to assess their performance as reinforcement material. The mortars’ workability (at a fresh state) was examined, as well as other physical, hygroscopic, thermal, and mechanical characteristics of the mortars at the ages of 28, 90 and 365 days and weathering performance, by subjecting them to different artificial ageing environments (freeze–thaw cycles or outdoor exposure). The results revealed the beneficial role of the treated fibres in dimensional stability, flexural strength, thermal insulation properties and capillary absorption of the mortar specimens, especially during the ageing process, with the black pine fibres showing the greatest improvement. The hydrothermally treated wood fibres seem to help maintain the integrity of cement mortars under all ageing conditions, proving that they could provide low-cost and eco-friendly mortar enhancement pathways.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 99%

Evaluation of Hydrothermally Treated Wood Fibre Performance in Cement Mortars

Kampragkou,

Kamperidou,

Stefanidou

2024

Fibers

View full text Add to dashboard Cite

show abstract

“…Therefore, mortars with higher paste content tend to have higher porosity, leading to volumetric stability problems [23,24]. On the other hand, the reduction of porosity with time is due to the increased amount of hydration products during the curing time, filling voids, and compacting the mortar's structure [25,26]. The porosity results showed that the N1.1 samples had the lowest porosity among the three green mortars.…”

Section: Porositymentioning

confidence: 99%

Effect of paste content on long-term strength and durability performance of green mortars

Ngo¹,

Huynh²

2022

STCE

View full text Add to dashboard Cite

This study uses densified mixture design algorithm (DMDA) to design the mixture proportions green mortars incorporating fly ash and ground granulated blast furnace slag (GGBFS). Three green mortar mixtures with various paste contents were designed using the DMDA method while a control cement-based mortar mixture was designed using the conventional method for comparison. The effect of different paste contents (n = 1.1, 1.3, and 1.5) on the changes of porosity, thermal conductivity, compressive strength, chloride ion penetration, resistance to sulfate attack, and ultrasonic pulse velocity (UPV) of both the green and control mortars was studied. The procedures of DMDA mix design for green mortar mixtures were also presented in this study. Test results reveal that all three green mixtures show a better performance than the control mixture, especially for long-term properties. On the other hand, increasing paste content increased porosity and compressive strength, however, it reduced thermal conductivity and UPV of the green mortars. All of the green mortars exhibited good performance with low porosity and compressive strength values of above 40 MPa after 28 days of curing. Moreover, the green mortars also demonstrated excellent ability to resist chloride (with RCPT values significantly lower than the threshold of 1000 coulombs) and sulfate attacks. As a result, the quality of these mortars was classified as very good level with UPV values of above 4000 m/s. This study proves the effectiveness of using the DMDA method to design the green mortar mixtures in the combination of using fly ash and GGBFS.

show abstract

“…The blended cement used is composite Portland composite cement (PCC) which is available in local market and produced based on SNI 7064-2014 [3][4][5][6][7]. Table 1 shows physical properties cement.…”

Section: Cement and Fly Ashmentioning

confidence: 99%

Point load test method for prediction strength of sustainable mortar made from blended cement and fly ash

Maysyurah

Caronge

2022

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

Fly ash (FA) is a by-product of power plants where a number of serious efforts in the field of sustainable building materials have spawned a recycling method in the form of cementitious material containing FA as raw material, including blended cement. The contribution of blended cement to producing sustainable mortar is presented in this study. The FA at a percentage of 10% to 30% by weight of cement is used instead of blended cement in the manufacture of mortar. The results of the point load strength index (PLSI) at the age of 7 days the percentages of FA-0, FA-10, FA-20, and FA-30 were 0.58, 0.46, 0.41, 0.41 N/mm2 and at the age of 28 days were 0.88, 0.85, 0.79, and 0.78 N/mm2 respectively, indicating that the mortar produced with blended cement and FA is carried the point loads well because it has stiffness and adequate robustness. The contrast test with available methods verifies that PLSI offers an alternative to compressive test and it has high accuracy. The point load test method can be used to predict the strength of mortar produced of blended cement and FA.

show abstract

Effect of water curing duration on strength behaviour of portland composite cement (PCC) mortar

Cited by 24 publications

References 5 publications

Evaluation of Hydrothermally Treated Wood Fibre Performance in Cement Mortars

Evaluation of Hydrothermally Treated Wood Fibre Performance in Cement Mortars

Effect of paste content on long-term strength and durability performance of green mortars

Point load test method for prediction strength of sustainable mortar made from blended cement and fly ash

Contact Info

Product

Resources

About