Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: reinforced AAC panel

Sortuj według:

Ogranicz wyniki do:

Zbrojone elementy z autoklawizowanego betonu komórkowego i ich zastosowanie w budownictwie

Kwaśniak Jarosław

Materiały Budowlane

2023

nr 8

68--69

Testing of reinforced AAC walls under lateral and racking loads

Edgell G. J., Fudge C. A.

Cement Wapno Beton

2011

nr spec.

92-95

Reinforced AAC panels in the UK have been used in past, but these tended to be acting as roof units and to a limited extent floor units, with walling elements occasionally used horizontally as fire walls or thinner vertical elements for partitions. In more recent times, their use in housing has been explored as a series of vertical storey height, solid wall elements (each element being 600 mm wide) to form the outer fabric of construction. In this form of construction a thickness of 200 mm will act as the main load-bearing component of the structure as well as making a significant contribution to the overall thermal performance of the building. The vertical load resistance can be determined using the European Standard EN 12602. However, little data existed in the UK to enable the design of the walls to resist horizontal lateral load and resistance to racking. This paper reports on some preliminary tests to determine the vertical and horizontal spanning capacity of walls made with large elements. These tests were on storey height walls or 1 m high walls each 2.4 m long for the determination of their vertical and horizontal spanning capacity respectively. The walls were built off a slip plane to ensure as little friction at the base as possible, loads were applied using air bags. The racking tests followed the principles of EN 594 which applies to timber structures. The modes of failure in the flexural tests were as expected although the results were quite variable. In the racking tests localised failure occurred at the point of applying the racking load in half of the tests although the results were not so low as to be discounted. Further tests are needed to establish the variability to be expected and to eliminate the localised failure in the racking tests.

Carbonation cracking of reinforced AAC panel

Matsushita F., Aono Y., Shibata S.

Cement Wapno Beton

2011

nr spec.

81-85

Carbonation cracking and its mechanism of AAC have not been reported at all. One of the possible mechanisms of carbonation cracking caused by carbonation shrinkage is investigated. Carbonation shrinkage at the occurrence of cracking was approximately 0.12% both for field study and accelerated carbonation, while carbonation degree was approximately 50% and 35%, respectively. Tensile stress in AAC was calculated to reach tensile strain capacity (0.04-0.05%) at the occurrence of cracking both for field study and accelerated carbonation data. In other words, the proposed mechanism of carbonation cracking was certified.