A mathematical model is developed that captures the transport of liquid water in hardened concrete, as well as the chemical reactions that occur between the imbibed water and the residual calcium silicate compounds residing in the porous concrete matrix. The main hypothesis in this model is that the reaction product – calcium silicate hydrate gel – clogs the pores within the concrete thereby hi...

RICE HUSK AMORPHOS SILICA AS GELATION AGENTS FOR VERTICAL CONCRETE STAINS, CEMENT ADDITIVE, FILLERS AND ABSORBANTS A.1. IDENTIFICATION AND SIGNIFICANCE OF THE INNOVATION Rare Earth® Labs is independently owned and operated company located in El Dorado, Arkansas manufacturing concentrated concrete and masonry acid stains that are uniquely manufactured for customers who want to achieve a natural ...

In industry, a comprehensive control process is necessary in order to ensure the quality of a manufactured product. In the manufacturing process of concrete, the variables are dependent on several factors, some of them external, which require very precise estimation. To resolve this problem we use techniques based on artificial neural networks. Throughout this paper we describe an RBF (Radial B...

Through the research, design datas are provided for the enhancing product performance and competitiveness. In the paper, based on problems that exist in the construction of concrete mixing station, actual conditions of Tengzhou city and research results in China United cement plant, concrete mixing station’s overall structure is designed. And the structure’s harmonic response and dynamic proper...

A framework is presented to investigate product form expres sions for circuit or packet switching random access protocols such as multihop-CSMA. Acceptation, retransmission and delay or acceleration functions are included. The transmission times and packet lenghts are generally distributed. A concrete invariance condition on the system functions is given which guarantëes an insensitive product ...

In many cases technological properties are expressed in terms of numerical parameters and the parameter values appear in product descriptions. This makes these limitations concrete and meaningful to pragmatic developers. It is the responsibility of engineering educators to make sure that our students understand the technological properties, know how to express them, know how to determine them f...

The demonstration will show a round-trip through the development and deployment of product lines with the pure::variants Eclipse plug-in using concrete examples from the embedded software domain. pure::variants is a one of the few commercially available tools specifically designed for product line development. The tool covers all steps of product line development from requirements and variabili...

Abstract: Bottom ash is a hazardous by-product from coal based thermal power plants. In this study fine aggregate in concrete mix has been replaced with bottom ash and glass fibre is additionally used to enhance the strength characteristics of concrete. The concrete mix design is done for M30 grade concrete. The mix is prepared for different combinations of 0%, 30%, 40%, 50% and 100% of replace...

2. September 15, 2015 5 2.1. Regular curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2. Arc Length Parametrization . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3. Change of Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4. Vector Product in R3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.5. OH GOD NO . . . . ....

the objective of the present work is to analyse the potential of using non-classical additions in concrete and mortar compositions such as coal bottom ash (ba) and biomass ash (bio), as partial replacing binder of ordinary portland cement. it is intended to deal with production of these type of wastes and its accumulation and contribute to the minimisation of carbon and embodied energy in const...