The Study of Flowability and The Compressive Strength of Grout/Mortar Proportions for Pre- placed Concrete Aggregate (PAC)

Chairunnisa, Nursiah; Fardheny, Arie Febry

doi:10.1051/matecconf/201928004010

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…Viscocrete 1003 type of superplasticizer imported by SIKA was used for all the mixes. This liquid chemical admixture was added at 0.7% by weight of cement [5].…”

Section: Chemical Admixturementioning

confidence: 99%

“…This method provides several benefits compared to the conventional concrete due to its flowability, absence of internal vibration, lower energy consumption, and cement weight [2][3][4]. However, one of the essential factors affecting PAC Technology is the quality of coarse aggregate and grout especially due to the influence of several factors such as the type of sand, cementsand ratio composition, water-cement ratio, and cement for conventional grout [5,6].…”

Section: Introductionmentioning

confidence: 99%

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The properties of preplaced aggregate concrete technology contain the industrial waste-material and the various shapes and sizes of coarse aggregate

Chairunnisa

Ruzhanah

Hairida

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The success of preplaced aggregate concrete technology depends on two main factors which are potential grout and coarse aggregate. This research was conducted experimentally to determine the effect of using two different fly ash sources as an alternative for the partial replacement of cement and several size and shapes of coarse aggregate on the compressive and tensile strength of PAC specimens. This involved the use of seven concrete mixes with a low water-cement ratio of 0.4 and cement to sand ratio of 1:0.75 to produce standard cylinder specimens of concrete containing rounded and crush aggregate. Moreover, fly ash was added at a dosage of 5% and 10% of cement weight while three shapes and sizes of a rounded and crushed aggregate at 20 mm, 30 mm, and a mixture of the two were also applied. The results showed the compressive strength of specimens with different sizes or a mix of rounded aggregate in PAC exhibited a similar performance with 30 mm of crushed coarse aggregate. Furthermore, the specimen with a higher content of calcium fly ash demonstrated a more rapid strength at an early age of seven days than those with lower content. Therefore, the partial replacement of cement with industrial waste material in the form of fly ash in preplaced aggregate concrete has the ability to save up to 10% of cement and also produce certain environmental benefits.

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“…Viscocrete 1003 type of superplasticizer imported by SIKA was used for all the mixes. This liquid chemical admixture was added at 0.7% by weight of cement [5].…”

Section: Chemical Admixturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The properties of preplaced aggregate concrete technology contain the industrial waste-material and the various shapes and sizes of coarse aggregate

Chairunnisa

Ruzhanah

Hairida

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…The innovative concrete technology, which improved flow easily and homogeneity without compacting or vibrating concrete to fulfill the formwork by adding the mineral admixtures, can be implemented for self-compacting concrete, SCC [1][2][3][4][5] dan two-stage concrete [6][7][8][9][10][11][12][13]. According to Dehn et al [14], the basic principle concept on self-compacting concrete mix design is the relation between superplasticizer (SP) and fresh concrete characteristics, as shown in Figure 1.…”

Section: Introduction Self Compacting Concretementioning

confidence: 99%

The effect of natural fiber (banana fiber) on the mechanical properties of self-compacting concrete

2022

Self Cite

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Self-compacting concrete is an innovative concrete technology with higher flowability properties by adding the mineral admixtures such as superplasticizers and not necessary to vibrate concrete. The banana fibers were used in this investigation because banana fiber is an environmentally friendly material with good properties compared to synthetic fiber. The experimental test consisted of two phases of research, i.e., preliminary research, which had the aim to investigate the appropriate percentage of superplasticizer in the mixed composition of self-compacting concrete. The percentages of superplasticizers were 0.7%, 1%, and 1.4%. The second phase of research on the effect of additional banana fiber on self-compacting concrete was carried out, examining workability, compressive strength, and the splitting tensile strength of concrete. In this research, the percentages of fiber were 0.12%, 0.3%, and 0.5% of the cement weight, and evaluated the effect of fiber treatment. The treated fibers mean that the fiber is immersed in NaOH solution or named as a delignification process. The hardened concrete specimen was used for determining the mechanical strengths, such as the compressive strength and split tensile strength tests. The test results found that the optimum value for superplasticizer dosage was 0.7% of cement weight, which can fulfill the whole criteria of fresh concrete and hardened SCC concrete. Furthermore, the specimen with the adding banana fiber of 0.12% by cement weight and treated fiber indicated a decrease in workability. Compared to the control concrete, it inversely increased compressive strength up to 44.36% and tensile strength up to 17.78%.

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Laboratory Characterization of Cement-Treated Rock Rubble as Airfield Pavement Base Layer

Tan

Khan

Yannick

et al. 2022

Lecture Notes in Civil Engineering

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The Study of Flowability and The Compressive Strength of Grout/Mortar Proportions for Pre- placed Concrete Aggregate (PAC)

Cited by 7 publications

References 4 publications

The properties of preplaced aggregate concrete technology contain the industrial waste-material and the various shapes and sizes of coarse aggregate

The properties of preplaced aggregate concrete technology contain the industrial waste-material and the various shapes and sizes of coarse aggregate

The effect of natural fiber (banana fiber) on the mechanical properties of self-compacting concrete

Laboratory Characterization of Cement-Treated Rock Rubble as Airfield Pavement Base Layer

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