王娟, 李秀领, 罗敏. Experimental Study on the Axial Compressive Strength and Elastic Modulus of GHPFRCC[J]. 2013, 33(S1): 58-62+77. DOI: 10.13409/j.cnki.jdpme.2013.s1.006.
Experimental Study on the Axial Compressive Strength and Elastic Modulus of GHPFRCC
A lot of non-renewable resources are consumed during concrete production
and this is not in accord with the requirement of sustainable development in China.The fly ash and polyvinyl alcohol(PVA)fiber are used to develop a new green building material
the green high-performance fiber-reinforced cementitious composites(GHPFRCC).The GHPFRCC can promote the structural sustainability by controlling the crack width and simultaneously reduce the energy consumption of structure.This paper reports the development of GHPFRCC with high volumes of fly ash and PVA fiber
and emphasizes the axial compressive strength and elastic modulus of GHPFRCC based on the static compressive test.There are 16-group specimens with sectional size of 70.7mm×70.7mm and height of 213.8mm.Experimental results show that:(1)to improve the compressive strength of GHPFRCC
it needs to decrease water cement ratio
which is the biggest influencing factor;(2)the biggest influencing factor on elastic modulus is water cement ratio
and the least is sand-binder ratio;(3)the prism axial compressive strength of GHPFRCC is similar to concrete
it indicates that the existence of fly ash did not reduce the compressive strength obviously;(4)the elastic modulus of GHPFRCC is typically lower than concrete due to the existence of PVA and the absence of coarse aggregate;(5)the fitting relationship of elastic modulus and compressive strength is put forward.
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