Impact of Gypsum Addition on Portland Composite Cement (PCC)

Rahman, Herliati; Sagitha, Anggi; Puspita, A. Dyah; Dwi, R. Puput; Salasa, Akhirudin

doi:10.9734/bpi/racms/v1/16033d

Cited by 2 publications

(1 citation statement)

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“…Clinker substitution is expected to reduce combustion energy, which has an impact on reducing CO2 emissions. However, the reduction of clinker impacts the decrease in compressive strength of the mortar [12,13]. For this reason, an effort that can be made to maintain the compressive strength of cement that meets the standards is to add additives such as Strength Improver Agent (SIA) [14,15].…”

Section: Introductionmentioning

confidence: 99%

Improve the Compressive Strength Using a Strength Improver Agent (Sia) in the Cement Industry in Indonesia

Rahman,

Mulyani

2023

Jurnal Teknologi

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Greenhouse gas emissions such as CO2 are released during clinker production through various processes, including the calcination reaction of limestone (CaCO3). To reduce CO2 emissions per ton of cement produced, some studies have explored the use of clinker substitutes. However, a reduction in the amount of clinker can also result in decreased compressive strength of the cement. To address this issue, the addition of a Strength Improver Agent (SIA) can be used to maintain the necessary compressive strength and ensure compliance with all relevant standards. Therefore, This study aimed to determine the optimal amount of SIA required to achieve the desired compressive strength. The study added SIA in varying amounts (100, 150, 200, 250, 300, 350, and 400 ppm), and the compressive strength of cement was measured at 1, 3, 7, and 28 days based on ASTM C 109 and QPT-LAB-SNI-05 standards. Physical tests were also conducted, including Blaine, 325 mesh residue, Insoluble Residue (IR), Loss on Ignition (LOI), and XRF based on ASTM C 114, ASTM-STP 985, XRF Thermo ARL 8480S. The observations and analysis showed that the optimum amount of SIA addition is 350 ppm, where the resulting compressive strength increases at least 7% compared to blanks.

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Section: Introductionmentioning

confidence: 99%

Improve the Compressive Strength Using a Strength Improver Agent (Sia) in the Cement Industry in Indonesia

Rahman,

Mulyani

2023

Jurnal Teknologi

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Comparative analysis of life cycle inventory of cement and ready-mix concrete production in Indonesia

Agustiningtyas,

Takaguchi,

Kubota

et al. 2024

J Mater Cycles Waste Manag

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The development of civil infrastructure in 2016–2021 increased cement and concrete consumption across Indonesia. The reduction of global warming effects can be expedited by providing environmentally friendly cement and concrete alternatives complemented with embodied energy and carbon assessment references. In this study, we investigated the local embodied energy and carbon emission with a boundary of cradle-to-gate for cements and that of cradle-to-site for ready-mix concretes in Indonesia. The production process data were collected from cement manufacturers and ready-mix concrete companies. The analysis starts with the ordinary Portland cement (OPC) and non-OPC cement, and continues to the lightweight OPC concrete and the normal-weight blended concrete. The embodied energy and carbon were quantified. The results showed that those of OPC were the highest, followed by the non-OPC cement of Portland pozzolan cement (PPC), the Portland cement composite (PCC), and the masonry cement. The available low-energy and carbon concrete mixes were found to be a combination of a high-range water reducer admixture, a supplementary cementitious material (SCM), and cement. The lightweight OPC concrete had similar embodied energy with the reference OPC concrete, but its embodied carbon was up to 11.1% lower than the reference OPC. The normal-weight blended PCC concrete with optimum SCM levels reduced embodied energy and carbon by 53.8% and 58.2%, respectively, compared to the reference OPC concrete. The reference PPC concrete is considered an alternative for assessing the embodied energy and carbon of blended concrete in the building design stage.

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Impact of Gypsum Addition on Portland Composite Cement (PCC)

Cited by 2 publications

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Improve the Compressive Strength Using a Strength Improver Agent (Sia) in the Cement Industry in Indonesia

Improve the Compressive Strength Using a Strength Improver Agent (Sia) in the Cement Industry in Indonesia

Comparative analysis of life cycle inventory of cement and ready-mix concrete production in Indonesia

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