The autoclaved concrete industry: An easy-to-follow method for optimization and testing

Alhozaimy, Abdulrahman M.; Fares, Galal; Al‐Negheimish, Abdulaziz I.; Jaafar, Mohd Saleh

doi:10.1016/j.conbuildmat.2013.08.024

Cited by 23 publications

(14 citation statements)

References 21 publications

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“…After surface abrasion, C5-O and C5-M exhibited contact angles of 96° and 94°, respectively, indicating that abrasion reduced the contact angle. As reported previously, siloxane and stearate concentrations in concrete are the highest near the surface [ 21 ]. Larger contact angles were observed on the surface without abrasion because siloxane or stearate moved to the surface along with water during drying.…”

Section: Resultssupporting

confidence: 66%

Strength and Water-Repelling Properties of Cement Mortar Mixed with Water Repellents

Hye-Ju

Kang

Lee³

2021

Materials

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In this study, the compressive strength and water contact angle of mortar specimens prepared by mixing two types of water repellent with ordinary Portland cement (OPC) and rapid-hardening cement mortar were measured before and after surface abrasion. In addition, the hydration products and chemical bonding of cement mortar with the repellents were examined using X-ray diffraction (XRD), thermogravimetry-differential thermal analysis (TG-DTA), and Fourier-transform infrared spectroscopy (FT-IR) to evaluate the performance of these cement mortar mixtures as repair materials. We found that the fast-hardening cement mortar mixture containing the oligomer water repellent showed the best performance with a high compressive strength and large water contact angle. With the oligomer water repellent, the rapid-hardening cement mortar mixture showed contact angles of 131° and 126° even after a 2 mm abrasion, thereby confirming that the water repellent secured hydrophobicity through strong bonding with the entire cement mortar as well as its surface. The compressive strengths were found to be 34.5 MPa at 3 h and 54.8 MPa at 28 days, confirming that hydration occurred well despite the addition of water repellent.

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Section: Resultssupporting

confidence: 66%

Strength and Water-Repelling Properties of Cement Mortar Mixed with Water Repellents

Hye-Ju

Kang

Lee³

2021

Materials

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“…For the concrete mixture incorporating GS (M6), the compressive strength at 56 days was the lowest, being only 65% of that of control mixture. The low compressive strength and strength development of M6 is attributed to the inertness of GS and its lack of pozzolanic activity [25].…”

Section: Compressive Strengthmentioning

confidence: 99%

Heat of hydration of concrete containing powdered scoria rock as a natural pozzolanic material

Alhozaimy

Fares

Alawad

et al. 2015

Construction and Building Materials

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“…The use of glass components in concrete is worldwide, unlike the use of glass components in autoclaved bricks which needs further research. Aerated cellular concrete and calcium silicate hydrate phase are subject to special modifications and research (SEM, XRD) [5,[39][40][41], while bricks are still a secondary material for this type of modification.…”

Section: Introductionmentioning

confidence: 99%

A Sustainable Autoclaved Material Made of Glass Sand

2019

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Far-reaching technological progress, manufacturing, and rapidly advancing globalization dictate new conditions for the development and changes in the construction industry. Valorization of by-products and the use of secondary materials in the production of building materials have attracted a lot of attention. Silicate materials were assessed on the basis of their compressive property. An orthogonal compositional plan type 3k (with k = 2), that is, a full two-factor experiment was applied in order to carry out the compressive strength and bulk density tests. Glass sand was added to the silicate mass as a modification. The results show that the compressive strength was higher than that of traditional bricks. Scanning electron microscopy coupled with energy dispersive spectrometry SEM/EDS was used to study the microstructure, whereas the XRD analysis was applied to examine the structures. Laboratory tests were performed on samples with dimensions of 50 × 50 × 50 mm. The results show the bulk density increase to the value of 1.75 kg/dm3, which increases the acoustic performance of the new products. The results of the modifications also indicate changes in the structure of the new bricks. The reference sample contained α-quartz, zeolite, tobermorite 9A, and calcium aluminum silicate (Ca2Al4Si12O32), whereas the samples modified with glass sand, the presence of phases such as α-cristobalite, natrolite, tobermorite 11A, gyrolite, and analcite was recorded.

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The autoclaved concrete industry: An easy-to-follow method for optimization and testing

Cited by 23 publications

References 21 publications

Strength and Water-Repelling Properties of Cement Mortar Mixed with Water Repellents

Strength and Water-Repelling Properties of Cement Mortar Mixed with Water Repellents

Heat of hydration of concrete containing powdered scoria rock as a natural pozzolanic material

A Sustainable Autoclaved Material Made of Glass Sand

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