Inhardened concrete,ETONIS® 260 significantly increases the flexuralandtensile strength of the concrete surfacingandaugments its resistance to frost and road salts. wacker.com wacker.com 在硬化混凝土中, ETONIS® 260能够大大提高混凝土层的抗折和抗拉强度, 以及对冰霜和融雪剂的抵御能力, 大量减少混凝土...
The invention relates to hardened concrete, in particular a concrete structural component, comprising a mixture of between 10.0 wt. % and 25.0 wt. %, (without taking into account any reinforcement), of set hydraulic and/or latent hydraulic binding agents, e.g. Portland cement, blast-furnace ...
The use of bonding -agent is one of the effective methods to strengthen bond strength between new and old concrete,but ,at present there is not an unified approach to evaluate the performance of these bonding-agents.The tension-resistant and shear -resistant bond strength of a number of bondin...
andpressure,areaddressedamongthepropertiesoffreshconcrete.Amonghardenedconcretepropertiescompressivestrengthandothermechanicalandphysicalpropertiesofhardenedconcrete,suchastensilestrength,elasticproperties,shrinkage,creep,crackingresistance,electrical,thermal,transportandotherpropertiesarecovered.Testing,interpretation,modelingand...
This research investigates properties of concrete prepared with urea and calcium nitrate anti-freeze admixtures and cured in different low deep-freeze temperatures and exterior winter conditions in Erzurum, Turkey. Four different mixtures were prepared and they are control, 9% calcium nitrate, 9% urea...
The presence of the stable and adequate air-void system in fresh and hardened concretes are crucial to many properties, such as resistance against freeze and thaw cycle, workability/rheology, pumpability, strength, and fire resistance of concrete. This paper presents a critical review of the air...
Babalola "Evaluation of Fresh and Hardened Properties of Self-Compacting Concrete" Open Journal of Civil Engineering, 2015.Oladipupo S. Olafusi, Adekunle P. Adewuyi, Abiodun I. Otunla, Adewale O. Babalola, "Evaluation of Fresh and Hardened Properties of Self-Compacting Concrete", Open Journal ...
In this paper, the effect of water-binder ratio, sand ratio and high-range water reducer (HRWR) content on the rheological behavior of mortar formulated from concrete mixture was investigated by using a RheoCAD rheometer. The segregation of fresh concrete and hardened concrete was, respectively,...
It was discovered that concrete produced in the morning hours (9am-12 noon) when the temperature and relative humidity are low, have better quality than those produced in the late afternoon (2-4pm) as depicted by the results of the tests on the tables. The study therefore, recommends that...
DEVICE AND METHOD FOR TESTING AMOUNT OF AIR OF FRE 优质文献 相似文献Air-void parameters measurement of fresh concrete and hardened concrete Air content, spacing factor and specific surface of fresh concrete and hardened concrete with different air contents, slumps and mineral admixtures (fly as......